Interdimensional Railways

- Trackgraphs and trains now properly differentiate between the dimensions they are located in
- Tracks placed next to a nether portal will attempt to connect to a second track piece in the nether

src/generated/resources/.cache/cache

@@ -486,7 +486,7 @@ f385988cb6fa9c48b5d59a6942ec50ed2b60c8bf assets/create/blockstates/stockpile_swi
 e815bfd854c2653f10828bb11950f7fb991d7efc assets/create/blockstates/stressometer.json
 8b0c2c7ac72529565b3339aa8df7565858100afa assets/create/blockstates/tiled_glass.json
 a2454400b1cf9889f70aebdc89c52a1be25f543c assets/create/blockstates/tiled_glass_pane.json
-85b57776edf426c2f8df6698b2482ea925914a5c assets/create/blockstates/track.json
+a64fcf2bee9b49f1448d1ff691bd92d7590a59b0 assets/create/blockstates/track.json
 408ae1009ee8bb2f2b83753d5909c53744f7865f assets/create/blockstates/track_signal.json
 60609cfbcc9be6f7e41fb493ef3147beb9750b60 assets/create/blockstates/track_station.json
 29af21c8d82891139d48d69f0393f612f2b6f8f1 assets/create/blockstates/tuff_pillar.json

src/generated/resources/assets/create/blockstates/track.json

@@ -30,6 +30,21 @@
       "model": "create:block/track/ascending",
       "y": 90
     },
+    "shape=tn,turn=false": {
+      "model": "create:block/track/teleport",
+      "y": 180
+    },
+    "shape=ts,turn=false": {
+      "model": "create:block/track/teleport"
+    },
+    "shape=te,turn=false": {
+      "model": "create:block/track/teleport",
+      "y": 270
+    },
+    "shape=tw,turn=false": {
+      "model": "create:block/track/teleport",
+      "y": 90
+    },
     "shape=cr_o,turn=false": {
       "model": "create:block/track/cross_ortho"
     },
@@ -78,6 +93,21 @@
       "model": "create:block/track/ascending",
       "y": 90
     },
+    "shape=tn,turn=true": {
+      "model": "create:block/track/teleport",
+      "y": 180
+    },
+    "shape=ts,turn=true": {
+      "model": "create:block/track/teleport"
+    },
+    "shape=te,turn=true": {
+      "model": "create:block/track/teleport",
+      "y": 270
+    },
+    "shape=tw,turn=true": {
+      "model": "create:block/track/teleport",
+      "y": 90
+    },
     "shape=cr_o,turn=true": {
       "model": "create:block/track/cross_ortho"
     },

src/main/java/com/simibubi/create/AllShapes.java

@@ -148,6 +148,7 @@ public class AllShapes {
 		TRACK_ORTHO = shape(TrackVoxelShapes.orthogonal()).forHorizontal(NORTH),
 		TRACK_ASC = shape(TrackVoxelShapes.ascending()).forHorizontal(SOUTH),
 		TRACK_DIAG = shape(TrackVoxelShapes.diagonal()).forHorizontal(SOUTH),
+		TRACK_ORTHO_LONG = shape(TrackVoxelShapes.longOrthogonalZOffset()).forHorizontal(SOUTH),
 
 		WHISTLE_BASE = shape(1, 0, 1, 15, 3, 15).add(5, 0, 5, 11, 8, 11)
 			.forDirectional(UP)

src/main/java/com/simibubi/create/content/contraptions/components/actors/PloughMovementBehaviour.java

@@ -18,6 +18,7 @@ import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.BubbleColumnBlock;
 import net.minecraft.world.level.block.FarmBlock;
 import net.minecraft.world.level.block.LiquidBlock;
+import net.minecraft.world.level.block.NetherPortalBlock;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.storage.loot.LootContext;
 import net.minecraft.world.level.storage.loot.parameters.LootContextParams;
@@ -80,6 +81,8 @@ public class PloughMovementBehaviour extends BlockBreakingMovementBehaviour {
 			return false;
 		if (state.getBlock() instanceof BubbleColumnBlock)
 			return false;
+		if (state.getBlock() instanceof NetherPortalBlock)
+			return false;
 		return state.getCollisionShape(world, breakingPos)
 			.isEmpty();
 	}

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/AbstractContraptionEntity.java

@@ -297,7 +297,7 @@ public abstract class AbstractContraptionEntity extends Entity implements IEntit
 		contraption.onEntityTick(level);
 		tickContraption();
 		super.tick();
-
+		
 		if (!(level instanceof ServerLevelAccessor sl))
 			return;
 
@@ -362,7 +362,7 @@ public abstract class AbstractContraptionEntity extends Entity implements IEntit
 
 			context.rotation = v -> applyRotation(v, 1);
 			context.position = actorPosition;
-			if (!actor.isActive(context))
+			if (!isActorActive(context, actor))
 				continue;
 			if (newPosVisited && !context.stall) {
 				actor.visitNewPosition(context, gridPosition);
@@ -408,6 +408,10 @@ public abstract class AbstractContraptionEntity extends Entity implements IEntit
 		contraption.stalled = isStalled();
 	}
 
+	protected boolean isActorActive(MovementContext context, MovementBehaviour actor) {
+		return actor.isActive(context);
+	}
+
 	protected void onContraptionStalled() {
 		AllPackets.channel.send(PacketDistributor.TRACKING_ENTITY.with(() -> this),
 			new ContraptionStallPacket(getId(), getX(), getY(), getZ(), getStalledAngle()));
@@ -790,4 +794,8 @@ public abstract class AbstractContraptionEntity extends Entity implements IEntit
 		// Contraptions no longer catch fire
 	}
 
+	public boolean isReadyForRender() {
+		return initialized;
+	}
+
 }

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/Contraption.java

@@ -5,6 +5,7 @@ import static com.simibubi.create.content.contraptions.components.structureMovem
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
@@ -1372,6 +1373,22 @@ public abstract class Contraption {
 //			return pos.equals(te.getBlockPos());
 //		}
 //	}
+	
+	public Collection<StructureBlockInfo> getRenderedBlocks() {
+		return blocks.values();
+	}
+	
+	public Collection<BlockEntity> getSpecialRenderedTEs() {
+		return specialRenderedTileEntities;
+	}
+	
+	public boolean isHiddenInPortal(BlockPos localPos) {
+		return false;
+	}
+
+	public Optional<List<AABB>> getSimplifiedEntityColliders() {
+		return simplifiedEntityColliders;
+	}
 
 	public static class ContraptionInvWrapper extends CombinedInvWrapper {
 		protected final boolean isExternal;
@@ -1392,4 +1409,5 @@ public abstract class Contraption {
 			return handler instanceof ContraptionInvWrapper && ((ContraptionInvWrapper) handler).isSlotExternal(slot);
 		}
 	}
+
 }

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/ContraptionCollider.java

@@ -116,7 +116,7 @@ public class ContraptionCollider {
 
 			// Use simplified bbs when present
 			final Vec3 motionCopy = motion;
-			List<AABB> collidableBBs = contraption.simplifiedEntityColliders.orElseGet(() -> {
+			List<AABB> collidableBBs = contraption.getSimplifiedEntityColliders().orElseGet(() -> {
 
 				// Else find 'nearby' individual block shapes to collide with
 				List<AABB> bbs = new ArrayList<>();
@@ -490,6 +490,7 @@ public class ContraptionCollider {
 
 		List<VoxelShape> potentialHits = BlockPos.betweenClosedStream(min, max)
 			.filter(contraption.getBlocks()::containsKey)
+			.filter(Predicates.not(contraption::isHiddenInPortal))
 			.map(p -> {
 				BlockState blockState = contraption.getBlocks()
 					.get(p).state;

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/ContraptionHandlerClient.java

@@ -82,7 +82,7 @@ public class ContraptionHandlerClient {
 		Couple<Vec3> rayInputs = getRayInputs(player);
 		Vec3 origin = rayInputs.getFirst();
 		Vec3 target = rayInputs.getSecond();
-		AABB aabb = new AABB(origin, target).inflate(4);
+		AABB aabb = new AABB(origin, target).inflate(16);
 		List<AbstractContraptionEntity> intersectingContraptions =
 			mc.level.getEntitiesOfClass(AbstractContraptionEntity.class, aabb);
 
@@ -143,6 +143,8 @@ public class ContraptionHandlerClient {
 			VoxelShape raytraceShape = state.getShape(Minecraft.getInstance().level, BlockPos.ZERO.below());
 			if (raytraceShape.isEmpty())
 				return false;
+			if (contraption.isHiddenInPortal(p))
+				return false;
 			BlockHitResult rayTrace = raytraceShape.clip(localOrigin, localTarget, p);
 			if (rayTrace != null) {
 				mutableResult.setValue(rayTrace);

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/glue/SuperGlueEntity.java

@@ -47,6 +47,7 @@ import net.minecraft.world.level.block.Mirror;
 import net.minecraft.world.level.block.Rotation;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.block.state.properties.BooleanProperty;
+import net.minecraft.world.level.portal.PortalInfo;
 import net.minecraft.world.phys.AABB;
 import net.minecraft.world.phys.Vec3;
 import net.minecraftforge.entity.IEntityAdditionalSpawnData;
@@ -287,6 +288,12 @@ public class SuperGlueEntity extends Entity implements IEntityAdditionalSpawnDat
 		return getBoundingBox().contains(Vec3.atCenterOf(pos));
 	}
 
+	@Override
+	public PortalInfo findDimensionEntryPoint(ServerLevel pDestination) {
+		portalEntrancePos = blockPosition();
+		return super.findDimensionEntryPoint(pDestination);
+	}
+	
 	public void spawnParticles() {
 		AABB bb = getBoundingBox();
 		Vec3 origin = new Vec3(bb.minX, bb.minY, bb.minZ);

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/interaction/controls/ControlsHandler.java

@@ -68,7 +68,7 @@ public class ControlsHandler {
 		if (packetCooldown > 0)
 			packetCooldown--;
 
-		if (InputConstants.isKeyDown(Minecraft.getInstance()
+		if (entity.isRemoved() || InputConstants.isKeyDown(Minecraft.getInstance()
 			.getWindow()
 			.getWindow(), GLFW.GLFW_KEY_ESCAPE)) {
 			BlockPos pos = controlsPos;

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/interaction/controls/ControlsMovementBehaviour.java

@@ -27,6 +27,12 @@ public class ControlsMovementBehaviour implements MovementBehaviour {
 		LerpedFloat equipAnimation = LerpedFloat.linear();
 	}
 
+	@Override
+	public void stopMoving(MovementContext context) {
+		context.contraption.entity.stopControlling(context.localPos);
+		MovementBehaviour.super.stopMoving(context);
+	}
+
 	@Override
 	public void tick(MovementContext context) {
 		MovementBehaviour.super.tick(context);

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/interaction/controls/ControlsServerHandler.java

@@ -13,6 +13,7 @@ import com.simibubi.create.foundation.utility.IntAttached;
 import com.simibubi.create.foundation.utility.WorldAttached;
 
 import net.minecraft.core.BlockPos;
+import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.level.LevelAccessor;
 
 public class ControlsServerHandler {
@@ -29,6 +30,11 @@ public class ControlsServerHandler {
 			ControlsContext ctx = entry.getValue();
 			Collection<ManuallyPressedKey> list = ctx.keys;
 
+			if (ctx.entity.isRemoved()) {
+				iterator.remove();
+				continue;
+			}
+
 			for (Iterator<ManuallyPressedKey> entryIterator = list.iterator(); entryIterator.hasNext();) {
 				ManuallyPressedKey pressedKey = entryIterator.next();
 				pressedKey.decrement();
@@ -36,9 +42,16 @@ public class ControlsServerHandler {
 					entryIterator.remove(); // key released
 			}
 
+			Player player = world.getPlayerByUUID(entry.getKey());
+			if (player == null) {
+				ctx.entity.stopControlling(ctx.controlsLocalPos);
+				iterator.remove();
+				continue;
+			}
+
 			if (!ctx.entity.control(ctx.controlsLocalPos, list.stream()
 				.map(ManuallyPressedKey::getSecond)
-				.toList(), world.getPlayerByUUID(entry.getKey()))) {
+				.toList(), player)) {
 				ctx.entity.stopControlling(ctx.controlsLocalPos);
 			}
 

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/ActorInstance.java

@@ -17,7 +17,7 @@ public abstract class ActorInstance {
         this.context = context;
     }
 
-    public void tick() { }
+	public void tick() { }
 
     public void beginFrame() { }
 

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/ContraptionEntityRenderer.java

@@ -28,6 +28,8 @@ public class ContraptionEntityRenderer<C extends AbstractContraptionEntity> exte
 			return false;
 		if (!entity.isAlive())
 			return false;
+		if (!entity.isReadyForRender())
+			return false;
 
 		return super.shouldRender(entity, clippingHelper, cameraX, cameraY, cameraZ);
 	}

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/ContraptionInstanceManager.java

@@ -12,10 +12,12 @@ import com.jozufozu.flywheel.backend.instancing.TaskEngine;
 import com.jozufozu.flywheel.backend.instancing.blockentity.BlockEntityInstanceManager;
 import com.jozufozu.flywheel.core.virtual.VirtualRenderWorld;
 import com.simibubi.create.AllMovementBehaviours;
+import com.simibubi.create.content.contraptions.components.structureMovement.Contraption;
 import com.simibubi.create.content.contraptions.components.structureMovement.MovementBehaviour;
 import com.simibubi.create.content.contraptions.components.structureMovement.MovementContext;
 
 import net.minecraft.client.Camera;
+import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplate.StructureBlockInfo;
 
 public class ContraptionInstanceManager extends BlockEntityInstanceManager {
@@ -24,14 +26,22 @@ public class ContraptionInstanceManager extends BlockEntityInstanceManager {
 
 	private final VirtualRenderWorld renderWorld;
 
-	ContraptionInstanceManager(MaterialManager materialManager, VirtualRenderWorld contraption) {
+	private Contraption contraption;
+
+	ContraptionInstanceManager(MaterialManager materialManager, VirtualRenderWorld renderWorld, Contraption contraption) {
 		super(materialManager);
-		this.renderWorld = contraption;
+		this.renderWorld = renderWorld;
+		this.contraption = contraption;
 	}
 
 	public void tick() {
 		actors.forEach(ActorInstance::tick);
 	}
+	
+	@Override
+	protected boolean canCreateInstance(BlockEntity blockEntity) {
+		return !contraption.isHiddenInPortal(blockEntity.getBlockPos());
+	}
 
 	@Override
 	public void beginFrame(TaskEngine taskEngine, Camera info) {
@@ -49,6 +59,9 @@ public class ContraptionInstanceManager extends BlockEntityInstanceManager {
 	public ActorInstance createActor(Pair<StructureBlockInfo, MovementContext> actor) {
 		StructureBlockInfo blockInfo = actor.getLeft();
 		MovementContext context = actor.getRight();
+		
+		if (contraption.isHiddenInPortal(context.localPos))
+			return null;
 
 		MovementBehaviour movementBehaviour = AllMovementBehaviours.of(blockInfo.state);
 

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/ContraptionRenderDispatcher.java

@@ -48,29 +48,36 @@ public class ContraptionRenderDispatcher {
 
 	/**
 	 * Reset a contraption's renderer.
+	 * 
 	 * @param contraption The contraption to invalidate.
 	 * @return true if there was a renderer associated with the given contraption.
 	 */
 	public static boolean invalidate(Contraption contraption) {
 		Level level = contraption.entity.level;
 
-		return WORLDS.get(level).invalidate(contraption);
+		return WORLDS.get(level)
+			.invalidate(contraption);
 	}
 
 	public static void tick(Level world) {
-		if (Minecraft.getInstance().isPaused()) return;
+		if (Minecraft.getInstance()
+			.isPaused())
+			return;
 
-		WORLDS.get(world).tick();
+		WORLDS.get(world)
+			.tick();
 	}
 
 	@SubscribeEvent
 	public static void beginFrame(BeginFrameEvent event) {
-		WORLDS.get(event.getWorld()).beginFrame(event);
+		WORLDS.get(event.getWorld())
+			.beginFrame(event);
 	}
 
 	@SubscribeEvent
 	public static void renderLayer(RenderLayerEvent event) {
-		WORLDS.get(event.getWorld()).renderLayer(event);
+		WORLDS.get(event.getWorld())
+			.renderLayer(event);
 
 		GlError.pollAndThrow(() -> "contraption layer: " + event.getLayer());
 	}
@@ -84,15 +91,17 @@ public class ContraptionRenderDispatcher {
 		reset();
 	}
 
-	public static void renderFromEntity(AbstractContraptionEntity entity, Contraption contraption, MultiBufferSource buffers) {
+	public static void renderFromEntity(AbstractContraptionEntity entity, Contraption contraption,
+		MultiBufferSource buffers) {
 		Level world = entity.level;
 
 		ContraptionRenderInfo renderInfo = WORLDS.get(world)
-				.getRenderInfo(contraption);
+			.getRenderInfo(contraption);
 		ContraptionMatrices matrices = renderInfo.getMatrices();
 
 		// something went wrong with the other rendering
-		if (!matrices.isReady()) return;
+		if (!matrices.isReady())
+			return;
 
 		VirtualRenderWorld renderWorld = renderInfo.renderWorld;
 
@@ -106,28 +115,30 @@ public class ContraptionRenderDispatcher {
 
 	public static VirtualRenderWorld setupRenderWorld(Level world, Contraption c) {
 		ContraptionWorld contraptionWorld = c.getContraptionWorld();
-		VirtualRenderWorld renderWorld = new VirtualRenderWorld(world, c.anchor, contraptionWorld.getHeight(), contraptionWorld.getMinBuildHeight());
+
+		BlockPos origin = c.anchor;
+		int height = contraptionWorld.getHeight();
+		int minBuildHeight = contraptionWorld.getMinBuildHeight();
+		VirtualRenderWorld renderWorld = new VirtualRenderWorld(world, origin, height, minBuildHeight);
 
 		renderWorld.setBlockEntities(c.presentTileEntities.values());
-
 		for (StructureTemplate.StructureBlockInfo info : c.getBlocks()
-				.values())
+			.values())
 			// Skip individual lighting updates to prevent lag with large contraptions
 			renderWorld.setBlock(info.pos, info.state, Block.UPDATE_SUPPRESS_LIGHT);
 
 		renderWorld.runLightingEngine();
-
 		return renderWorld;
 	}
 
 	public static void renderTileEntities(Level world, VirtualRenderWorld renderWorld, Contraption c,
-										  ContraptionMatrices matrices, MultiBufferSource buffer) {
-		TileEntityRenderHelper.renderTileEntities(world, renderWorld, c.specialRenderedTileEntities,
-				matrices.getModelViewProjection(), matrices.getLight(), buffer);
+		ContraptionMatrices matrices, MultiBufferSource buffer) {
+		TileEntityRenderHelper.renderTileEntities(world, renderWorld, c.getSpecialRenderedTEs(),
+			matrices.getModelViewProjection(), matrices.getLight(), buffer);
 	}
 
 	protected static void renderActors(Level world, VirtualRenderWorld renderWorld, Contraption c,
-									   ContraptionMatrices matrices, MultiBufferSource buffer) {
+		ContraptionMatrices matrices, MultiBufferSource buffer) {
 		PoseStack m = matrices.getModel();
 
 		for (Pair<StructureTemplate.StructureBlockInfo, MovementContext> actor : c.getActors()) {
@@ -140,18 +151,20 @@ public class ContraptionRenderDispatcher {
 
 			MovementBehaviour movementBehaviour = AllMovementBehaviours.of(blockInfo.state);
 			if (movementBehaviour != null) {
+				if (c.isHiddenInPortal(blockInfo.pos))
+					continue;
 				m.pushPose();
 				TransformStack.cast(m)
-						.translate(blockInfo.pos);
+					.translate(blockInfo.pos);
 				movementBehaviour.renderInContraption(context, renderWorld, matrices, buffer);
 				m.popPose();
 			}
 		}
 	}
 
-	public static SuperByteBuffer buildStructureBuffer(VirtualRenderWorld renderWorld, Contraption c, RenderType layer) {
-		Collection<StructureTemplate.StructureBlockInfo> values = c.getBlocks()
-				.values();
+	public static SuperByteBuffer buildStructureBuffer(VirtualRenderWorld renderWorld, Contraption c,
+		RenderType layer) {
+		Collection<StructureTemplate.StructureBlockInfo> values = c.getRenderedBlocks();
 		BufferBuilder builder = ModelUtil.getBufferBuilderFromTemplate(renderWorld, layer, values);
 		return new SuperByteBuffer(builder);
 	}

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/ContraptionRenderInfo.java

@@ -38,7 +38,7 @@ public class ContraptionRenderInfo {
 	}
 
 	public boolean isVisible() {
-		return visible && contraption.entity.isAlive();
+		return visible && contraption.entity.isAlive() && contraption.entity.isReadyForRender();
 	}
 
 	/**

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/FlwContraption.java

@@ -29,6 +29,7 @@ import net.minecraft.client.renderer.RenderType;
 import net.minecraft.util.Mth;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplate.StructureBlockInfo;
 import net.minecraft.world.phys.AABB;
 import net.minecraft.world.phys.Vec3;
 
@@ -137,10 +138,10 @@ public class FlwContraption extends ContraptionRenderInfo {
 		renderLayers.clear();
 
 		List<RenderType> blockLayers = RenderType.chunkBufferLayers();
-
+		Collection<StructureBlockInfo> renderedBlocks = contraption.getRenderedBlocks();
+		
 		for (RenderType layer : blockLayers) {
-			Model layerModel = new WorldModel(renderWorld, layer, contraption.getBlocks().values(), layer + "_" + contraption.entity.getId());
-
+			Model layerModel = new WorldModel(renderWorld, layer, renderedBlocks, layer + "_" + contraption.entity.getId());
 			renderLayers.put(layer, new ArrayModelRenderer(layerModel));
 		}
 	}
@@ -187,14 +188,14 @@ public class FlwContraption extends ContraptionRenderInfo {
 						.setGroupFactory(ContraptionGroup.forContraption(parent))
 						.setIgnoreOriginCoordinate(true)
 						.build();
-				tileInstanceManager = new ContraptionInstanceManager(engine, parent.renderWorld);
+				tileInstanceManager = new ContraptionInstanceManager(engine, parent.renderWorld, parent.contraption);
 				engine.addListener(tileInstanceManager);
 
 				this.engine = engine;
 			}
 			case BATCHING -> {
 				engine = new BatchingEngine();
-				tileInstanceManager = new ContraptionInstanceManager(engine, parent.renderWorld);
+				tileInstanceManager = new ContraptionInstanceManager(engine, parent.renderWorld, parent.contraption);
 			}
 			default -> throw new IllegalArgumentException("Unknown engine type");
 			}

src/main/java/com/simibubi/create/content/logistics/trains/DimensionPalette.java

@@ -0,0 +1,68 @@
+package com.simibubi.create.content.logistics.trains;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.simibubi.create.foundation.utility.NBTHelper;
+
+import net.minecraft.core.Registry;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.Tag;
+import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.level.Level;
+
+public class DimensionPalette {
+
+	List<ResourceKey<Level>> gatheredDims;
+
+	public DimensionPalette() {
+		gatheredDims = new ArrayList<>();
+	}
+
+	public int encode(ResourceKey<Level> dimension) {
+		int indexOf = gatheredDims.indexOf(dimension);
+		if (indexOf == -1) {
+			indexOf = gatheredDims.size();
+			gatheredDims.add(dimension);
+		}
+		return indexOf;
+	}
+
+	public ResourceKey<Level> decode(int index) {
+		if (gatheredDims.size() <= index || index < 0)
+			return Level.OVERWORLD;
+		return gatheredDims.get(index);
+	}
+
+	public void send(FriendlyByteBuf buffer) {
+		buffer.writeInt(gatheredDims.size());
+		gatheredDims.forEach(rk -> buffer.writeResourceLocation(rk.location()));
+	}
+
+	public static DimensionPalette receive(FriendlyByteBuf buffer) {
+		DimensionPalette palette = new DimensionPalette();
+		int length = buffer.readInt();
+		for (int i = 0; i < length; i++)
+			palette.gatheredDims.add(ResourceKey.create(Registry.DIMENSION_REGISTRY, buffer.readResourceLocation()));
+		return palette;
+	}
+
+	public void write(CompoundTag tag) {
+		tag.put("DimensionPalette", NBTHelper.writeCompoundList(gatheredDims, rk -> {
+			CompoundTag c = new CompoundTag();
+			c.putString("Id", rk.location()
+				.toString());
+			return c;
+		}));
+	}
+
+	public static DimensionPalette read(CompoundTag tag) {
+		DimensionPalette palette = new DimensionPalette();
+		NBTHelper.iterateCompoundList(tag.getList("DimensionPalette", Tag.TAG_COMPOUND), c -> palette.gatheredDims
+			.add(ResourceKey.create(Registry.DIMENSION_REGISTRY, new ResourceLocation(c.getString("Id")))));
+		return palette;
+	}
+
+}

src/main/java/com/simibubi/create/content/logistics/trains/GlobalRailwayManager.java

@@ -146,8 +146,8 @@ public class GlobalRailwayManager {
 		markTracksDirty();
 	}
 
-	public void updateSplitGraph(TrackGraph graph) {
-		Set<TrackGraph> disconnected = graph.findDisconnectedGraphs(null);
+	public void updateSplitGraph(LevelAccessor level, TrackGraph graph) {
+		Set<TrackGraph> disconnected = graph.findDisconnectedGraphs(level, null);
 		disconnected.forEach(this::putGraphWithDefaultGroup);
 		if (!disconnected.isEmpty()) {
 			sync.graphSplit(graph, disconnected);
@@ -219,6 +219,13 @@ public class GlobalRailwayManager {
 
 		for (Iterator<Train> iterator = waitingTrains.iterator(); iterator.hasNext();) {
 			Train train = iterator.next();
+			
+			if (train.invalid) {
+				iterator.remove();
+				trains.remove(train.id);
+				continue;
+			}
+			
 			if (train.navigation.waitingForSignal != null)
 				continue;
 			movingTrains.add(train);
@@ -227,11 +234,20 @@ public class GlobalRailwayManager {
 
 		for (Iterator<Train> iterator = movingTrains.iterator(); iterator.hasNext();) {
 			Train train = iterator.next();
+			
+			if (train.invalid) {
+				iterator.remove();
+				trains.remove(train.id);
+				continue;
+			}
+			
 			if (train.navigation.waitingForSignal == null)
 				continue;
 			waitingTrains.add(train);
 			iterator.remove();
 		}
+		
+		
 	}
 
 	public void tickSignalOverlay() {

src/main/java/com/simibubi/create/content/logistics/trains/ITrackBlock.java

@@ -21,7 +21,10 @@ import com.simibubi.create.foundation.utility.Pair;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
 import net.minecraft.core.Direction.AxisDirection;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.level.BlockGetter;
+import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.phys.Vec3;
 import net.minecraftforge.api.distmarker.Dist;
@@ -47,8 +50,10 @@ public interface ITrackBlock {
 		return isSlope(world, pos, state) ? .5 : 0;
 	}
 
-	public static Collection<DiscoveredLocation> walkConnectedTracks(BlockGetter world, TrackNodeLocation location,
+	public static Collection<DiscoveredLocation> walkConnectedTracks(BlockGetter worldIn, TrackNodeLocation location,
 		boolean linear) {
+		BlockGetter world = location != null && worldIn instanceof ServerLevel sl ? sl.getServer()
+			.getLevel(location.dimension) : worldIn;
 		List<DiscoveredLocation> list = new ArrayList<>();
 		for (BlockPos blockPos : location.allAdjacent()) {
 			BlockState blockState = world.getBlockState(blockPos);
@@ -58,15 +63,18 @@ public interface ITrackBlock {
 		return list;
 	}
 
-	public default Collection<DiscoveredLocation> getConnected(BlockGetter world, BlockPos pos, BlockState state,
+	public default Collection<DiscoveredLocation> getConnected(BlockGetter worldIn, BlockPos pos, BlockState state,
 		boolean linear, @Nullable TrackNodeLocation connectedTo) {
+		BlockGetter world = connectedTo != null && worldIn instanceof ServerLevel sl ? sl.getServer()
+			.getLevel(connectedTo.dimension) : worldIn;
 		Vec3 center = Vec3.atBottomCenterOf(pos)
 			.add(0, getElevationAtCenter(world, pos, state), 0);
 		List<DiscoveredLocation> list = new ArrayList<>();
 		TrackShape shape = state.getValue(TrackBlock.SHAPE);
 		getTrackAxes(world, pos, state).forEach(axis -> {
 			addToListIfConnected(connectedTo, list, (d, b) -> axis.scale(b ? d : -d)
-				.add(center), b -> shape.getNormal(), axis, null);
+				.add(center), b -> shape.getNormal(), b -> world instanceof Level l ? l.dimension() : Level.OVERWORLD,
+				axis, null);
 		});
 
 		return list;
@@ -74,15 +82,22 @@ public interface ITrackBlock {
 
 	public static void addToListIfConnected(@Nullable TrackNodeLocation fromEnd, Collection<DiscoveredLocation> list,
 		BiFunction<Double, Boolean, Vec3> offsetFactory, Function<Boolean, Vec3> normalFactory,
-		Vec3 axis, BezierConnection viaTurn) {
+		Function<Boolean, ResourceKey<Level>> dimensionFactory, Vec3 axis, BezierConnection viaTurn) {
 
-		DiscoveredLocation firstLocation = new DiscoveredLocation(offsetFactory.apply(0.5d, true)).viaTurn(viaTurn)
-			.withNormal(normalFactory.apply(true))
-			.withDirection(axis);
-		DiscoveredLocation secondLocation = new DiscoveredLocation(offsetFactory.apply(0.5d, false)).viaTurn(viaTurn)
-			.withNormal(normalFactory.apply(false))
-			.withDirection(axis);
+		DiscoveredLocation firstLocation =
+			new DiscoveredLocation(dimensionFactory.apply(true), offsetFactory.apply(0.5d, true)).viaTurn(viaTurn)
+				.withNormal(normalFactory.apply(true))
+				.withDirection(axis);
+		DiscoveredLocation secondLocation =
+			new DiscoveredLocation(dimensionFactory.apply(false), offsetFactory.apply(0.5d, false)).viaTurn(viaTurn)
+				.withNormal(normalFactory.apply(false))
+				.withDirection(axis);
 
+		if (!firstLocation.dimension.equals(secondLocation.dimension)) {
+			firstLocation.forceNode();
+			secondLocation.forceNode();
+		}
+		
 		boolean skipFirst = false;
 		boolean skipSecond = false;
 

src/main/java/com/simibubi/create/content/logistics/trains/RailwaySavedData.java

@@ -26,14 +26,15 @@ public class RailwaySavedData extends SavedData {
 	public CompoundTag save(CompoundTag nbt) {
 		GlobalRailwayManager railways = Create.RAILWAYS;
 		Create.LOGGER.info("Saving Railway Information...");
-		nbt.put("RailGraphs", NBTHelper.writeCompoundList(railways.trackNetworks.values(), TrackGraph::write));
-		nbt.put("SignalBlocks",
-			NBTHelper.writeCompoundList(railways.signalEdgeGroups.values(), seg -> {
-				if (seg.fallbackGroup && !railways.trackNetworks.containsKey(seg.id))
-					return null;
-				return seg.write();
-			}));
-		nbt.put("Trains", NBTHelper.writeCompoundList(railways.trains.values(), Train::write));
+		DimensionPalette dimensions = new DimensionPalette();
+		nbt.put("RailGraphs", NBTHelper.writeCompoundList(railways.trackNetworks.values(), tg -> tg.write(dimensions)));
+		nbt.put("SignalBlocks", NBTHelper.writeCompoundList(railways.signalEdgeGroups.values(), seg -> {
+			if (seg.fallbackGroup && !railways.trackNetworks.containsKey(seg.id))
+				return null;
+			return seg.write();
+		}));
+		nbt.put("Trains", NBTHelper.writeCompoundList(railways.trains.values(), t -> t.write(dimensions)));
+		dimensions.write(nbt);
 		return nbt;
 	}
 
@@ -44,18 +45,19 @@ public class RailwaySavedData extends SavedData {
 		sd.trains = new HashMap<>();
 		Create.LOGGER.info("Loading Railway Information...");
 
+		DimensionPalette dimensions = DimensionPalette.read(nbt);
 		NBTHelper.iterateCompoundList(nbt.getList("RailGraphs", Tag.TAG_COMPOUND), c -> {
-			TrackGraph graph = TrackGraph.read(c);
+			TrackGraph graph = TrackGraph.read(c, dimensions);
 			sd.trackNetworks.put(graph.id, graph);
 		});
-		NBTHelper.iterateCompoundList(nbt.getList("Trains", Tag.TAG_COMPOUND), c -> {
-			Train train = Train.read(c, sd.trackNetworks);
-			sd.trains.put(train.id, train);
-		});
 		NBTHelper.iterateCompoundList(nbt.getList("SignalBlocks", Tag.TAG_COMPOUND), c -> {
 			SignalEdgeGroup group = SignalEdgeGroup.read(c);
 			sd.signalEdgeGroups.put(group.id, group);
 		});
+		NBTHelper.iterateCompoundList(nbt.getList("Trains", Tag.TAG_COMPOUND), c -> {
+			Train train = Train.read(c, sd.trackNetworks, dimensions);
+			sd.trains.put(train.id, train);
+		});
 
 		for (TrackGraph graph : sd.trackNetworks.values()) {
 			for (SignalBoundary signal : graph.getPoints(EdgePointType.SIGNAL)) {

src/main/java/com/simibubi/create/content/logistics/trains/TrackEdge.java

@@ -11,7 +11,6 @@ import com.simibubi.create.foundation.utility.VecHelper;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction.Axis;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.network.FriendlyByteBuf;
 import net.minecraft.util.Mth;
 import net.minecraft.world.phys.AABB;
 import net.minecraft.world.phys.Vec3;
@@ -22,8 +21,10 @@ public class TrackEdge {
 	public TrackNode node2;
 	BezierConnection turn;
 	EdgeData edgeData;
+	boolean interDimensional;
 
 	public TrackEdge(TrackNode node1, TrackNode node2, BezierConnection turn) {
+		this.interDimensional = !node1.location.dimension.equals(node2.location.dimension);
 		this.edgeData = new EdgeData(this);
 		this.node1 = node1;
 		this.node2 = node2;
@@ -34,6 +35,10 @@ public class TrackEdge {
 		return turn != null;
 	}
 
+	public boolean isInterDimensional() {
+		return interDimensional;
+	}
+
 	public EdgeData getEdgeData() {
 		return edgeData;
 	}
@@ -47,15 +52,24 @@ public class TrackEdge {
 			.normalize();
 	}
 
+	public boolean canTravelTo(TrackEdge other) {
+		if (isInterDimensional() || other.isInterDimensional())
+			return true;
+		Vec3 newDirection = other.getDirection(true);
+		return getDirection(false).dot(newDirection) > 7 / 8f;
+	}
+
 	public double getLength() {
-		return isTurn() ? turn.getLength()
-			: node1.location.getLocation()
-				.distanceTo(node2.location.getLocation());
+		return isInterDimensional() ? 0
+			: isTurn() ? turn.getLength()
+				: node1.location.getLocation()
+					.distanceTo(node2.location.getLocation());
 	}
 
 	public double incrementT(double currentT, double distance) {
 		boolean tooFar = Math.abs(distance) > 5;
-		distance = distance / getLength();
+		double length = getLength();
+		distance = distance / (length == 0 ? 1 : length);
 		return !tooFar && isTurn() ? turn.incrementT(currentT, distance) : currentT + distance;
 	}
 
@@ -71,6 +85,8 @@ public class TrackEdge {
 		Vec3 w1 = other1.location.getLocation();
 		Vec3 w2 = other2.location.getLocation();
 
+		if (isInterDimensional() || other.isInterDimensional())
+			return Collections.emptyList();
 		if (v1.y != v2.y || v1.y != w1.y || v1.y != w2.y)
 			return Collections.emptyList();
 
@@ -152,26 +168,17 @@ public class TrackEdge {
 		return isTurn() ? turn.getNormal(Mth.clamp(t, 0, 1)) : node1.getNormal();
 	}
 
-	public void write(FriendlyByteBuf buffer) {
-		buffer.writeBoolean(isTurn());
-		if (isTurn())
-			turn.write(buffer);
-	}
-
-	public static TrackEdge read(FriendlyByteBuf buffer) {
-		return new TrackEdge(null, null, buffer.readBoolean() ? new BezierConnection(buffer) : null);
-	}
-
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag baseCompound = isTurn() ? turn.write(BlockPos.ZERO) : new CompoundTag();
-		baseCompound.put("Signals", edgeData.write());
+		baseCompound.put("Signals", edgeData.write(dimensions));
 		return baseCompound;
 	}
 
-	public static TrackEdge read(CompoundTag tag, TrackGraph graph) {
+	public static TrackEdge read(TrackNode node1, TrackNode node2, CompoundTag tag, TrackGraph graph,
+		DimensionPalette dimensions) {
 		TrackEdge trackEdge =
-			new TrackEdge(null, null, tag.contains("Positions") ? new BezierConnection(tag, BlockPos.ZERO) : null);
-		trackEdge.edgeData = EdgeData.read(tag.getCompound("Signals"), trackEdge, graph);
+			new TrackEdge(node1, node2, tag.contains("Positions") ? new BezierConnection(tag, BlockPos.ZERO) : null);
+		trackEdge.edgeData = EdgeData.read(tag.getCompound("Signals"), trackEdge, graph, dimensions);
 		return trackEdge;
 	}
 

src/main/java/com/simibubi/create/content/logistics/trains/TrackGraph.java

@@ -31,10 +31,8 @@ import com.simibubi.create.foundation.utility.Couple;
 import com.simibubi.create.foundation.utility.NBTHelper;
 import com.simibubi.create.foundation.utility.VecHelper;
 
-import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.ListTag;
-import net.minecraft.nbt.NbtUtils;
 import net.minecraft.nbt.Tag;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.world.level.Level;
@@ -117,8 +115,8 @@ public class TrackGraph {
 		return nodes.keySet();
 	}
 
-	public TrackNode locateNode(Vec3 position) {
-		return locateNode(new TrackNodeLocation(position));
+	public TrackNode locateNode(Level level, Vec3 position) {
+		return locateNode(new TrackNodeLocation(position).in(level));
 	}
 
 	public TrackNode locateNode(TrackNodeLocation position) {
@@ -269,7 +267,8 @@ public class TrackGraph {
 		}
 	}
 
-	public Set<TrackGraph> findDisconnectedGraphs(@Nullable Map<Integer, UUID> preAssignedIds) {
+	public Set<TrackGraph> findDisconnectedGraphs(@Nullable LevelAccessor level,
+		@Nullable Map<Integer, UUID> preAssignedIds) {
 		Set<TrackGraph> dicovered = new HashSet<>();
 		Set<TrackNodeLocation> vertices = new HashSet<>(nodes.keySet());
 		List<TrackNodeLocation> frontier = new ArrayList<>();
@@ -295,7 +294,7 @@ public class TrackGraph {
 						frontier.add(connected.getLocation());
 
 				if (target != null) {
-					transfer(currentNode, target);
+					transfer(level, currentNode, target);
 					if (preAssignedIds != null && preAssignedIds.containsKey(currentNode.getNetId()))
 						target.setId(preAssignedIds.get(currentNode.getNetId()));
 				}
@@ -313,13 +312,13 @@ public class TrackGraph {
 		color = Color.rainbowColor(new Random(id.getLeastSignificantBits()).nextInt());
 	}
 
-	public void transfer(TrackNode node, TrackGraph target) {
+	public void transfer(LevelAccessor level, TrackNode node, TrackGraph target) {
 		target.addNode(node);
 		target.invalidateBounds();
 
 		TrackNodeLocation nodeLoc = node.getLocation();
 		Map<TrackNode, TrackEdge> connections = getConnectionsFrom(node);
-		Map<UUID, Train> trains = Create.RAILWAYS.trains;
+		Map<UUID, Train> trains = Create.RAILWAYS.sided(level).trains;
 
 		if (!connections.isEmpty()) {
 			target.connectionsByNode.put(node, connections);
@@ -487,7 +486,7 @@ public class TrackGraph {
 		Create.RAILWAYS.markTracksDirty();
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag tag = new CompoundTag();
 		tag.putUUID("Id", id);
 		tag.putInt("Color", color.getRGB());
@@ -499,7 +498,8 @@ public class TrackGraph {
 		for (TrackNode railNode : nodes.values()) {
 			indexTracker.put(railNode, i);
 			CompoundTag nodeTag = new CompoundTag();
-			nodeTag.put("Location", NbtUtils.writeBlockPos(new BlockPos(railNode.getLocation())));
+			nodeTag.put("Location", railNode.getLocation()
+				.write(dimensions));
 			nodeTag.put("Normal", VecHelper.writeNBT(railNode.getNormal()));
 			nodesList.add(nodeTag);
 			i++;
@@ -517,21 +517,21 @@ public class TrackGraph {
 				if (index2 == null)
 					return;
 				connectionTag.putInt("To", index2);
-				connectionTag.put("EdgeData", edge.write());
+				connectionTag.put("EdgeData", edge.write(dimensions));
 				connectionsList.add(connectionTag);
 			});
 			nodeTag.put("Connections", connectionsList);
 		});
 
 		tag.put("Nodes", nodesList);
-		tag.put("Points", edgePoints.write());
+		tag.put("Points", edgePoints.write(dimensions));
 		return tag;
 	}
 
-	public static TrackGraph read(CompoundTag tag) {
+	public static TrackGraph read(CompoundTag tag, DimensionPalette dimensions) {
 		TrackGraph graph = new TrackGraph(tag.getUUID("Id"));
 		graph.color = new Color(tag.getInt("Color"));
-		graph.edgePoints.read(tag.getCompound("Points"));
+		graph.edgePoints.read(tag.getCompound("Points"), dimensions);
 
 		Map<Integer, TrackNode> indexTracker = new HashMap<>();
 		ListTag nodesList = tag.getList("Nodes", Tag.TAG_COMPOUND);
@@ -539,8 +539,7 @@ public class TrackGraph {
 		int i = 0;
 		for (Tag t : nodesList) {
 			CompoundTag nodeTag = (CompoundTag) t;
-			TrackNodeLocation location =
-				TrackNodeLocation.fromPackedPos(NbtUtils.readBlockPos(nodeTag.getCompound("Location")));
+			TrackNodeLocation location = TrackNodeLocation.read(nodeTag.getCompound("Location"), dimensions);
 			Vec3 normal = VecHelper.readNBT(nodeTag.getList("Normal", Tag.TAG_DOUBLE));
 			graph.loadNode(location, nextNodeId(), normal);
 			indexTracker.put(i, graph.locateNode(location));
@@ -557,9 +556,7 @@ public class TrackGraph {
 				continue;
 			NBTHelper.iterateCompoundList(nodeTag.getList("Connections", Tag.TAG_COMPOUND), c -> {
 				TrackNode node2 = indexTracker.get(c.getInt("To"));
-				TrackEdge edge = TrackEdge.read(c.getCompound("EdgeData"), graph);
-				edge.node1 = node1;
-				edge.node2 = node2;
+				TrackEdge edge = TrackEdge.read(node1, node2, c.getCompound("EdgeData"), graph, dimensions);
 				graph.putConnection(node1, node2, edge);
 			});
 		}

src/main/java/com/simibubi/create/content/logistics/trains/TrackGraphHelper.java

@@ -34,7 +34,7 @@ public class TrackGraphHelper {
 		// Case 1: Centre of block lies on a node
 
 		TrackNodeLocation location = new TrackNodeLocation(Vec3.atBottomCenterOf(pos)
-			.add(0, track.getElevationAtCenter(level, pos, trackBlockState), 0));
+			.add(0, track.getElevationAtCenter(level, pos, trackBlockState), 0)).in(level);
 		graph = Create.RAILWAYS.sided(level)
 			.getGraph(level, location);
 		if (graph != null) {
@@ -142,7 +142,7 @@ public class TrackGraphHelper {
 		if (bc == null || !bc.isPrimary())
 			return null;
 
-		TrackNodeLocation targetLoc = new TrackNodeLocation(bc.starts.getSecond());
+		TrackNodeLocation targetLoc = new TrackNodeLocation(bc.starts.getSecond()).in(level);
 		for (DiscoveredLocation location : track.getConnected(level, pos, state, true, null)) {
 			TrackGraph graph = Create.RAILWAYS.sided(level)
 				.getGraph(level, location);

src/main/java/com/simibubi/create/content/logistics/trains/TrackGraphSync.java

@@ -46,7 +46,8 @@ public class TrackGraphSync {
 
 	public void edgeAdded(TrackGraph graph, TrackNode node1, TrackNode node2, TrackEdge edge) {
 		flushGraphPacket(graph.id);
-		currentGraphSyncPacket.addedEdges.add(Pair.of(Couple.create(node1.getNetId(), node2.getNetId()), edge));
+		currentGraphSyncPacket.addedEdges
+			.add(Pair.of(Couple.create(node1.getNetId(), node2.getNetId()), edge.getTurn()));
 	}
 
 	public void pointAdded(TrackGraph graph, TrackEdgePoint point) {
@@ -127,7 +128,7 @@ public class TrackGraphSync {
 			graph.connectionsByNode.get(node)
 				.forEach((node2, edge) -> {
 					Couple<Integer> key = Couple.create(node.getNetId(), node2.getNetId());
-					currentPacket.addedEdges.add(Pair.of(key, edge));
+					currentPacket.addedEdges.add(Pair.of(key, edge.getTurn()));
 					currentPacket.syncEdgeData(node, node2, edge);
 				});
 

src/main/java/com/simibubi/create/content/logistics/trains/TrackGraphSyncPacket.java

@@ -15,14 +15,13 @@ import com.simibubi.create.foundation.utility.Couple;
 import com.simibubi.create.foundation.utility.Pair;
 import com.simibubi.create.foundation.utility.VecHelper;
 
-import net.minecraft.core.BlockPos;
 import net.minecraft.network.FriendlyByteBuf;
 import net.minecraft.world.phys.Vec3;
 
 public class TrackGraphSyncPacket extends TrackGraphPacket {
 
 	Map<Integer, Pair<TrackNodeLocation, Vec3>> addedNodes;
-	List<Pair<Couple<Integer>, TrackEdge>> addedEdges;
+	List<Pair<Couple<Integer>, BezierConnection>> addedEdges;
 	List<Integer> removedNodes;
 	List<TrackEdgePoint> addedEdgePoints;
 	List<UUID> removedEdgePoints;
@@ -52,6 +51,8 @@ public class TrackGraphSyncPacket extends TrackGraphPacket {
 		if (packetDeletesGraph)
 			return;
 
+		DimensionPalette dimensions = DimensionPalette.receive(buffer);
+
 		addedNodes = new HashMap<>();
 		addedEdges = new ArrayList<>();
 		addedEdgePoints = new ArrayList<>();
@@ -67,15 +68,16 @@ public class TrackGraphSyncPacket extends TrackGraphPacket {
 		size = buffer.readVarInt();
 		for (int i = 0; i < size; i++)
 			addedNodes.put(buffer.readVarInt(),
-				Pair.of(TrackNodeLocation.fromPackedPos(buffer.readBlockPos()), VecHelper.read(buffer)));
+				Pair.of(TrackNodeLocation.receive(buffer, dimensions), VecHelper.read(buffer)));
 
 		size = buffer.readVarInt();
 		for (int i = 0; i < size; i++)
-			addedEdges.add(Pair.of(Couple.create(buffer::readVarInt), TrackEdge.read(buffer)));
+			addedEdges.add(
+				Pair.of(Couple.create(buffer::readVarInt), buffer.readBoolean() ? new BezierConnection(buffer) : null));
 
 		size = buffer.readVarInt();
 		for (int i = 0; i < size; i++)
-			addedEdgePoints.add(EdgePointType.read(buffer));
+			addedEdgePoints.add(EdgePointType.read(buffer, dimensions));
 
 		size = buffer.readVarInt();
 		for (int i = 0; i < size; i++)
@@ -99,19 +101,26 @@ public class TrackGraphSyncPacket extends TrackGraphPacket {
 
 	@Override
 	public void write(FriendlyByteBuf buffer) {
-
 		buffer.writeUUID(graphId);
 		buffer.writeBoolean(packetDeletesGraph);
+
 		if (packetDeletesGraph)
 			return;
 
+		// Populate and send palette ahead of time
+		DimensionPalette dimensions = new DimensionPalette();
+		addedNodes.forEach((node, loc) -> dimensions.encode(loc.getFirst().dimension));
+		addedEdgePoints.forEach(ep -> ep.edgeLocation.forEach(loc -> dimensions.encode(loc.dimension)));
+		dimensions.send(buffer);
+
 		buffer.writeVarInt(removedNodes.size());
 		removedNodes.forEach(buffer::writeVarInt);
 
 		buffer.writeVarInt(addedNodes.size());
 		addedNodes.forEach((node, loc) -> {
 			buffer.writeVarInt(node);
-			buffer.writeBlockPos(new BlockPos(loc.getFirst()));
+			loc.getFirst()
+				.send(buffer, dimensions);
 			VecHelper.write(loc.getSecond(), buffer);
 		});
 
@@ -119,12 +128,14 @@ public class TrackGraphSyncPacket extends TrackGraphPacket {
 		addedEdges.forEach(pair -> {
 			pair.getFirst()
 				.forEach(buffer::writeVarInt);
-			pair.getSecond()
-				.write(buffer);
+			BezierConnection turn = pair.getSecond();
+			buffer.writeBoolean(turn != null);
+			if (turn != null)
+				turn.write(buffer);
 		});
 
 		buffer.writeVarInt(addedEdgePoints.size());
-		addedEdgePoints.forEach(ep -> ep.write(buffer));
+		addedEdgePoints.forEach(ep -> ep.write(buffer, dimensions));
 
 		buffer.writeVarInt(removedEdgePoints.size());
 		removedEdgePoints.forEach(buffer::writeUUID);
@@ -166,17 +177,13 @@ public class TrackGraphSyncPacket extends TrackGraphPacket {
 			graph.loadNode(nodeLocation.getFirst(), nodeId, nodeLocation.getSecond());
 		}
 
-		for (Pair<Couple<Integer>, TrackEdge> pair : addedEdges) {
+		for (Pair<Couple<Integer>, BezierConnection> pair : addedEdges) {
 			Couple<TrackNode> nodes = pair.getFirst()
 				.map(graph::getNode);
 			TrackNode node1 = nodes.getFirst();
 			TrackNode node2 = nodes.getSecond();
-			if (node1 != null && node2 != null) {
-				TrackEdge edge = pair.getSecond();
-				edge.node1 = node1;
-				edge.node2 = node2;
-				graph.putConnection(node1, node2, edge);
-			}
+			if (node1 != null && node2 != null)
+				graph.putConnection(node1, node2, new TrackEdge(node1, node2, pair.getSecond()));
 		}
 
 		for (TrackEdgePoint edgePoint : addedEdgePoints)
@@ -189,7 +196,7 @@ public class TrackGraphSyncPacket extends TrackGraphPacket {
 		handleEdgeData(manager, graph);
 
 		if (!splitSubGraphs.isEmpty())
-			graph.findDisconnectedGraphs(splitSubGraphs)
+			graph.findDisconnectedGraphs(null, splitSubGraphs)
 				.forEach(manager::putGraph);
 	}
 

src/main/java/com/simibubi/create/content/logistics/trains/TrackGraphVisualizer.java

@@ -11,7 +11,6 @@ import com.simibubi.create.AllKeys;
 import com.simibubi.create.Create;
 import com.simibubi.create.CreateClient;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.EdgeData;
-import com.simibubi.create.content.logistics.trains.management.edgePoint.TrackEdgeIntersection;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.signal.SignalBoundary;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.signal.SignalEdgeGroup;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.signal.TrackEdgePoint;
@@ -51,6 +50,9 @@ public class TrackGraphVisualizer {
 			Vec3 location = nodeLocation.getLocation();
 			if (location.distanceTo(camera) > 50)
 				continue;
+			if (!mc.level.dimension()
+				.equals(nodeLocation.dimension))
+				continue;
 
 			Map<TrackNode, TrackEdge> map = graph.connectionsByNode.get(node);
 			if (map == null)
@@ -62,16 +64,8 @@ public class TrackGraphVisualizer {
 				TrackEdge edge = entry.getValue();
 				EdgeData signalData = edge.getEdgeData();
 
-				// temporary
-				if (other.hashCode() > hashCode == ctrl)
-					for (TrackEdgeIntersection intersection : signalData.getIntersections()) {
-						Vec3 v1 = edge.getPosition(intersection.location / edge.getLength());
-						Vec3 v2 = v1.add(node.normal.scale(8 / 16f));
-						outliner.showLine(intersection, v1, v2)
-							.colored(Color.mixColors(Color.WHITE, graph.color, 1))
-							.lineWidth(width);
-					} //
-
+				if (!edge.node1.location.dimension.equals(edge.node2.location.dimension))
+					continue;
 				if (other.hashCode() > hashCode && !ctrl)
 					continue;
 
@@ -234,6 +228,9 @@ public class TrackGraphVisualizer {
 			Vec3 location = nodeLocation.getLocation();
 			if (location.distanceTo(camera) > 50)
 				continue;
+			if (!mc.level.dimension()
+				.equals(nodeLocation.dimension))
+				continue;
 
 			Vec3 yOffset = new Vec3(0, 3 / 16f, 0);
 			Vec3 v1 = location.add(yOffset);
@@ -249,12 +246,20 @@ public class TrackGraphVisualizer {
 			int hashCode = node.hashCode();
 			for (Entry<TrackNode, TrackEdge> entry : map.entrySet()) {
 				TrackNode other = entry.getKey();
+				TrackEdge edge = entry.getValue();
 
+				if (!edge.node1.location.dimension.equals(edge.node2.location.dimension)) {
+					v1 = location.add(yOffset);
+					v2 = v1.add(node.normal.scale(3 / 16f));
+					CreateClient.OUTLINER.showLine(Integer.valueOf(node.netId), v1, v2)
+						.colored(Color.mixColors(Color.WHITE, graph.color, 1))
+						.lineWidth(1 / 4f);
+					continue;
+				}
 				if (other.hashCode() > hashCode && !AllKeys.isKeyDown(GLFW.GLFW_KEY_LEFT_CONTROL))
 					continue;
-				yOffset = new Vec3(0, (other.hashCode() > hashCode ? 6 : 4) / 16f, 0);
 
-				TrackEdge edge = entry.getValue();
+				yOffset = new Vec3(0, (other.hashCode() > hashCode ? 6 : 4) / 16f, 0);
 				if (!edge.isTurn()) {
 					CreateClient.OUTLINER.showLine(edge, edge.getPosition(0)
 						.add(yOffset),

src/main/java/com/simibubi/create/content/logistics/trains/TrackNodeLocation.java

@@ -2,16 +2,24 @@ package com.simibubi.create.content.logistics.trains;
 
 import java.util.Collection;
 import java.util.HashSet;
+import java.util.Objects;
 import java.util.Set;
 
 import com.simibubi.create.foundation.utility.Iterate;
 
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Vec3i;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.NbtUtils;
+import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.world.level.Level;
 import net.minecraft.world.phys.Vec3;
 
 public class TrackNodeLocation extends Vec3i {
 
+	public ResourceKey<Level> dimension;
+
 	public TrackNodeLocation(Vec3 vec) {
 		this(vec.x, vec.y, vec.z);
 	}
@@ -20,7 +28,16 @@ public class TrackNodeLocation extends Vec3i {
 		super(Math.round(p_121865_ * 2), Math.floor(p_121866_ * 2), Math.round(p_121867_ * 2));
 	}
 
-	public static TrackNodeLocation fromPackedPos(BlockPos bufferPos) {
+	public TrackNodeLocation in(Level level) {
+		return in(level.dimension());
+	}
+
+	public TrackNodeLocation in(ResourceKey<Level> dimension) {
+		this.dimension = dimension;
+		return this;
+	}
+
+	private static TrackNodeLocation fromPackedPos(BlockPos bufferPos) {
 		return new TrackNodeLocation(bufferPos);
 	}
 
@@ -32,14 +49,44 @@ public class TrackNodeLocation extends Vec3i {
 		return new Vec3(getX() / 2f, getY() / 2f, getZ() / 2f);
 	}
 
+	public ResourceKey<Level> getDimension() {
+		return dimension;
+	}
+
 	@Override
 	public boolean equals(Object pOther) {
-		return super.equals(pOther);
+		return super.equals(pOther) && pOther instanceof TrackNodeLocation tnl
+			&& Objects.equals(tnl.dimension, dimension);
 	}
 
 	@Override
 	public int hashCode() {
-		return (this.getY() + this.getZ() * 31) * 31 + this.getX();
+		return (this.getY() + (this.getZ() * 31 + dimension.hashCode()) * 31) * 31 + this.getX();
+	}
+
+	public CompoundTag write(DimensionPalette dimensions) {
+		CompoundTag c = NbtUtils.writeBlockPos(new BlockPos(this));
+		if (dimensions != null)
+			c.putInt("D", dimensions.encode(dimension));
+		return c;
+	}
+
+	public static TrackNodeLocation read(CompoundTag tag, DimensionPalette dimensions) {
+		TrackNodeLocation location = fromPackedPos(NbtUtils.readBlockPos(tag));
+		if (dimensions != null)
+			location.dimension = dimensions.decode(tag.getInt("D"));
+		return location;
+	}
+
+	public void send(FriendlyByteBuf buffer, DimensionPalette dimensions) {
+		buffer.writeBlockPos(new BlockPos(this));
+		buffer.writeVarInt(dimensions.encode(dimension));
+	}
+
+	public static TrackNodeLocation receive(FriendlyByteBuf buffer, DimensionPalette dimensions) {
+		TrackNodeLocation location = fromPackedPos(buffer.readBlockPos());
+		location.dimension = dimensions.decode(buffer.readVarInt());
+		return location;
 	}
 
 	public Collection<BlockPos> allAdjacent() {
@@ -60,12 +107,18 @@ public class TrackNodeLocation extends Vec3i {
 		Vec3 direction;
 		Vec3 normal;
 
-		public DiscoveredLocation(double p_121865_, double p_121866_, double p_121867_) {
+		public DiscoveredLocation(Level level, double p_121865_, double p_121866_, double p_121867_) {
 			super(p_121865_, p_121866_, p_121867_);
+			in(level);
 		}
 
-		public DiscoveredLocation(Vec3 vec) {
+		public DiscoveredLocation(ResourceKey<Level> dimension, Vec3 vec) {
 			super(vec);
+			in(dimension);
+		}
+
+		public DiscoveredLocation(Level level, Vec3 vec) {
+			this(level.dimension(), vec);
 		}
 
 		public DiscoveredLocation viaTurn(BezierConnection turn) {

src/main/java/com/simibubi/create/content/logistics/trains/TrackPropagator.java

@@ -73,7 +73,7 @@ public class TrackPropagator {
 		// 3. Ensure any affected graph gets checked for segmentation
 
 		for (TrackGraph railGraph : toUpdate)
-			manager.updateSplitGraph(railGraph);
+			manager.updateSplitGraph(reader, railGraph);
 
 		manager.markTracksDirty();
 	}
@@ -235,9 +235,9 @@ public class TrackPropagator {
 		if (location.shouldForceNode())
 			return true;
 		if (next.stream()
-			.anyMatch(DiscoveredLocation::connectedViaTurn))
+			.anyMatch(DiscoveredLocation::shouldForceNode))
 			return true;
-
+		
 		Vec3 direction = location.direction;
 		if (direction != null && next.stream()
 			.anyMatch(dl -> dl.notInLineWith(direction)))

src/main/java/com/simibubi/create/content/logistics/trains/entity/BogeyInstance.java

@@ -29,10 +29,10 @@ public sealed class BogeyInstance {
 		shafts = new ModelData[2];
 
 		materialManager.defaultSolid()
-				.material(Materials.TRANSFORMED)
-				.getModel(AllBlocks.SHAFT.getDefaultState()
-						.setValue(ShaftBlock.AXIS, Direction.Axis.Z))
-				.createInstances(shafts);
+			.material(Materials.TRANSFORMED)
+			.getModel(AllBlocks.SHAFT.getDefaultState()
+				.setValue(ShaftBlock.AXIS, Direction.Axis.Z))
+			.createInstances(shafts);
 
 	}
 
@@ -41,14 +41,23 @@ public sealed class BogeyInstance {
 			shaft.delete();
 	}
 
+	public void hiddenFrame() {
+		beginFrame(0, null);
+	}
+	
 	public void beginFrame(float wheelAngle, PoseStack ms) {
+		if (ms == null) {
+			for (int i : Iterate.zeroAndOne)
+				shafts[i].setEmptyTransform();
+			return;
+		}
 
 		for (int i : Iterate.zeroAndOne)
 			shafts[i].setTransform(ms)
-					.translate(-.5f, .25f, i * -1)
-					.centre()
-					.rotateZ(wheelAngle)
-					.unCentre();
+				.translate(-.5f, .25f, i * -1)
+				.centre()
+				.rotateZ(wheelAngle)
+				.unCentre();
 	}
 
 	public void updateLight(BlockAndTintGetter world, CarriageContraptionEntity entity) {
@@ -67,7 +76,8 @@ public sealed class BogeyInstance {
 
 	public void updateLight(int blockLight, int skyLight) {
 		for (ModelData shaft : shafts) {
-			shaft.setBlockLight(blockLight).setSkyLight(skyLight);
+			shaft.setBlockLight(blockLight)
+				.setSkyLight(skyLight);
 		}
 	}
 
@@ -80,37 +90,46 @@ public sealed class BogeyInstance {
 			super(bogey, materialManager);
 
 			frame = materialManager.defaultSolid()
-					.material(Materials.TRANSFORMED)
-					.getModel(AllBlockPartials.BOGEY_FRAME)
-					.createInstance();
+				.material(Materials.TRANSFORMED)
+				.getModel(AllBlockPartials.BOGEY_FRAME)
+				.createInstance();
 
 			wheels = new ModelData[2];
 
 			materialManager.defaultSolid()
-					.material(Materials.TRANSFORMED)
-					.getModel(AllBlockPartials.SMALL_BOGEY_WHEELS)
-					.createInstances(wheels);
+				.material(Materials.TRANSFORMED)
+				.getModel(AllBlockPartials.SMALL_BOGEY_WHEELS)
+				.createInstances(wheels);
 		}
 
 		@Override
 		public void beginFrame(float wheelAngle, PoseStack ms) {
 			super.beginFrame(wheelAngle, ms);
 
+			if (ms == null) {
+				frame.setEmptyTransform();
+				for (int side : Iterate.positiveAndNegative)
+					wheels[(side + 1) / 2].setEmptyTransform();
+				return;
+			}
+
 			frame.setTransform(ms);
 
 			for (int side : Iterate.positiveAndNegative) {
 				wheels[(side + 1) / 2].setTransform(ms)
-						.translate(0, 12 / 16f, side)
-						.rotateX(wheelAngle);
+					.translate(0, 12 / 16f, side)
+					.rotateX(wheelAngle);
 			}
 		}
 
 		@Override
 		public void updateLight(int blockLight, int skyLight) {
 			super.updateLight(blockLight, skyLight);
-			frame.setBlockLight(blockLight).setSkyLight(skyLight);
+			frame.setBlockLight(blockLight)
+				.setSkyLight(skyLight);
 			for (ModelData wheel : wheels)
-				wheel.setBlockLight(blockLight).setSkyLight(skyLight);
+				wheel.setBlockLight(blockLight)
+					.setSkyLight(skyLight);
 		}
 
 		@Override
@@ -133,58 +152,73 @@ public sealed class BogeyInstance {
 		public Drive(CarriageBogey bogey, MaterialManager materialManager) {
 			super(bogey, materialManager);
 			Material<ModelData> mat = materialManager.defaultSolid()
-					.material(Materials.TRANSFORMED);
+				.material(Materials.TRANSFORMED);
 
 			secondShaft = new ModelData[2];
 
 			mat.getModel(AllBlocks.SHAFT.getDefaultState()
-							.setValue(ShaftBlock.AXIS, Direction.Axis.X))
-					.createInstances(secondShaft);
+				.setValue(ShaftBlock.AXIS, Direction.Axis.X))
+				.createInstances(secondShaft);
 
 			drive = mat.getModel(AllBlockPartials.BOGEY_DRIVE)
-					.createInstance();
+				.createInstance();
 			piston = mat.getModel(AllBlockPartials.BOGEY_PISTON)
-					.createInstance();
+				.createInstance();
 			wheels = mat.getModel(AllBlockPartials.LARGE_BOGEY_WHEELS)
-					.createInstance();
+				.createInstance();
 			pin = mat.getModel(AllBlockPartials.BOGEY_PIN)
-					.createInstance();
+				.createInstance();
 		}
 
 		@Override
 		public void beginFrame(float wheelAngle, PoseStack ms) {
 			super.beginFrame(wheelAngle, ms);
 
+			if (ms == null) {
+				for (int i : Iterate.zeroAndOne)
+					secondShaft[i].setEmptyTransform();
+				drive.setEmptyTransform();
+				piston.setEmptyTransform();
+				wheels.setEmptyTransform();
+				pin.setEmptyTransform();
+				return;
+			}
+
 			for (int i : Iterate.zeroAndOne)
 				secondShaft[i].setTransform(ms)
-						.translate(-.5f, .25f, .5f + i * -2)
-						.centre()
-						.rotateX(wheelAngle)
-						.unCentre();
+					.translate(-.5f, .25f, .5f + i * -2)
+					.centre()
+					.rotateX(wheelAngle)
+					.unCentre();
 
 			drive.setTransform(ms);
 			piston.setTransform(ms)
-					.translate(0, 0, 1 / 4f * Math.sin(AngleHelper.rad(wheelAngle)));
+				.translate(0, 0, 1 / 4f * Math.sin(AngleHelper.rad(wheelAngle)));
 
 			wheels.setTransform(ms)
-					.translate(0, 1, 0)
-					.rotateX(wheelAngle);
+				.translate(0, 1, 0)
+				.rotateX(wheelAngle);
 			pin.setTransform(ms)
-					.translate(0, 1, 0)
-					.rotateX(wheelAngle)
-					.translate(0, 1 / 4f, 0)
-					.rotateX(-wheelAngle);
+				.translate(0, 1, 0)
+				.rotateX(wheelAngle)
+				.translate(0, 1 / 4f, 0)
+				.rotateX(-wheelAngle);
 		}
 
 		@Override
 		public void updateLight(int blockLight, int skyLight) {
 			super.updateLight(blockLight, skyLight);
 			for (ModelData shaft : secondShaft)
-				shaft.setBlockLight(blockLight).setSkyLight(skyLight);
-			drive.setBlockLight(blockLight).setSkyLight(skyLight);
-			piston.setBlockLight(blockLight).setSkyLight(skyLight);
-			wheels.setBlockLight(blockLight).setSkyLight(skyLight);
-			pin.setBlockLight(blockLight).setSkyLight(skyLight);
+				shaft.setBlockLight(blockLight)
+					.setSkyLight(skyLight);
+			drive.setBlockLight(blockLight)
+				.setSkyLight(skyLight);
+			piston.setBlockLight(blockLight)
+				.setSkyLight(skyLight);
+			wheels.setBlockLight(blockLight)
+				.setSkyLight(skyLight);
+			pin.setBlockLight(blockLight)
+				.setSkyLight(skyLight);
 		}
 
 		@Override

src/main/java/com/simibubi/create/content/logistics/trains/entity/Carriage.java

@@ -2,25 +2,41 @@ package com.simibubi.create.content.logistics.trains.entity;
 
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
 import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Consumer;
 import java.util.function.Function;
 
 import javax.annotation.Nullable;
 
 import org.apache.commons.lang3.mutable.MutableDouble;
 
+import com.simibubi.create.content.contraptions.components.structureMovement.Contraption;
+import com.simibubi.create.content.contraptions.components.structureMovement.render.ContraptionRenderDispatcher;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
+import com.simibubi.create.content.logistics.trains.TrackNodeLocation;
 import com.simibubi.create.content.logistics.trains.entity.TravellingPoint.IEdgePointListener;
 import com.simibubi.create.content.logistics.trains.entity.TravellingPoint.ITrackSelector;
 import com.simibubi.create.foundation.utility.Couple;
 import com.simibubi.create.foundation.utility.Iterate;
+import com.simibubi.create.foundation.utility.NBTHelper;
 import com.simibubi.create.foundation.utility.VecHelper;
 
 import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.Tag;
+import net.minecraft.resources.ResourceKey;
 import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.util.Mth;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.Entity.RemovalReason;
@@ -28,6 +44,9 @@ import net.minecraft.world.entity.EntityType;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.phys.Vec3;
+import net.minecraftforge.api.distmarker.Dist;
+import net.minecraftforge.api.distmarker.OnlyIn;
+import net.minecraftforge.fml.DistExecutor;
 
 public class Carriage {
 
@@ -42,29 +61,21 @@ public class Carriage {
 	public int bogeySpacing;
 	public Couple<CarriageBogey> bogeys;
 
-	public Vec3 positionAnchor;
-	public Couple<Vec3> rotationAnchors;
-
 	CompoundTag serialisedEntity;
-	WeakReference<CarriageContraptionEntity> entity;
-
-	// client
-	public boolean pointsInitialised;
+	Map<Integer, CompoundTag> serialisedPassengers;
 
+	private Map<ResourceKey<Level>, DimensionalCarriageEntity> entities;
 
 	static final int FIRST = 0, MIDDLE = 1, LAST = 2, BOTH = 3;
 
 	public Carriage(CarriageBogey bogey1, @Nullable CarriageBogey bogey2, int bogeySpacing) {
 		this.bogeySpacing = bogeySpacing;
 		this.bogeys = Couple.create(bogey1, bogey2);
-		this.entity = new WeakReference<>(null);
 		this.id = netIdGenerator.incrementAndGet();
 		this.serialisedEntity = new CompoundTag();
-		this.pointsInitialised = false;
-		this.rotationAnchors = Couple.create(null, null);
 		this.presentConductors = Couple.create(false, false);
-
-		updateContraptionAnchors();
+		this.serialisedPassengers = new HashMap<>();
+		this.entities = new HashMap<>();
 
 		bogey1.setLeading();
 		bogey1.carriage = this;
@@ -76,13 +87,18 @@ public class Carriage {
 		this.train = train;
 	}
 
+	public boolean presentInMultipleDimensions() {
+		return entities.size() > 1;
+	}
+
 	public void setContraption(Level level, CarriageContraption contraption) {
 		CarriageContraptionEntity entity = CarriageContraptionEntity.create(level, contraption);
 		entity.setCarriage(this);
 		contraption.startMoving(level);
 		contraption.onEntityInitialize(level, entity);
 		updateContraptionAnchors();
-		alignEntity(entity);
+
+		getDimensional(level).alignEntity(entity);
 
 		List<Entity> players = new ArrayList<>();
 		for (Entity passenger : entity.getPassengers())
@@ -96,11 +112,24 @@ public class Carriage {
 		serialisedEntity = entity.serializeNBT();
 	}
 
+	public DimensionalCarriageEntity getDimensional(Level level) {
+		return getDimensional(level.dimension());
+	}
+
+	public DimensionalCarriageEntity getDimensional(ResourceKey<Level> dimension) {
+		return entities.computeIfAbsent(dimension, $ -> new DimensionalCarriageEntity());
+	}
+
+	@Nullable
+	public DimensionalCarriageEntity getDimensionalIfPresent(ResourceKey<Level> dimension) {
+		return entities.get(dimension);
+	}
+
 	public double travel(Level level, TrackGraph graph, double distance,
 		Function<TravellingPoint, ITrackSelector> forwardControl,
 		Function<TravellingPoint, ITrackSelector> backwardControl, int type) {
 		boolean onTwoBogeys = isOnTwoBogeys();
-		double stress = onTwoBogeys ? bogeySpacing - leadingAnchor().distanceTo(trailingAnchor()) : 0;
+		double stress = onTwoBogeys ? bogeySpacing - getAnchorDiff() : 0;
 		blocked = false;
 
 		MutableDouble distanceMoved = new MutableDouble(distance);
@@ -140,12 +169,23 @@ public class Carriage {
 				IEdgePointListener passiveListener = point.ignoreEdgePoints();
 
 				toMove += correction + bogeyCorrection;
-				double moved =
-					point
-						.travel(graph, toMove, toMove > 0 ? frontTrackSelector : backTrackSelector,
-							toMove > 0 ? atFront ? frontListener : atBack ? backListener : passiveListener
-								: atFront ? backListener : atBack ? frontListener : passiveListener,
-							point.ignoreTurns());
+
+				ITrackSelector trackSelector = toMove > 0 ? frontTrackSelector : backTrackSelector;
+				IEdgePointListener signalListener =
+					toMove > 0 ? atFront ? frontListener : atBack ? backListener : passiveListener
+						: atFront ? backListener : atBack ? frontListener : passiveListener;
+
+				double moved = point.travel(graph, toMove, trackSelector, signalListener, point.ignoreTurns(), c -> {
+					for (DimensionalCarriageEntity dce : entities.values())
+						if (c.either(tnl -> tnl.equals(dce.pivot)))
+							return false;
+					if (entities.size() > 1) {
+						train.status.doublePortal();
+						return true;
+					}
+					return false;
+				});
+
 				blocked |= point.blocked;
 
 				distanceMoved.setValue(moved);
@@ -153,98 +193,185 @@ public class Carriage {
 		}
 
 		updateContraptionAnchors();
-		manageEntity(level);
+		manageEntities(level);
 		return distanceMoved.getValue();
 	}
 
-	public void updateConductors() {
-		CarriageContraptionEntity entity = this.entity.get();
-		if (entity != null && entity.isAlive())
-			presentConductors = entity.checkConductors();
+	private double getAnchorDiff() {
+		double diff = 0;
+		int entries = 0;
+
+		TravellingPoint leadingPoint = getLeadingPoint();
+		TravellingPoint trailingPoint = getTrailingPoint();
+		if (leadingPoint.node1 != null && trailingPoint.node1 != null)
+			if (!leadingPoint.node1.getLocation().dimension.equals(trailingPoint.node1.getLocation().dimension))
+				return bogeySpacing;
+
+		for (DimensionalCarriageEntity dce : entities.values())
+			if (dce.leadingAnchor() != null && dce.trailingAnchor() != null) {
+				entries++;
+				diff += dce.leadingAnchor()
+					.distanceTo(dce.trailingAnchor());
+			}
+
+		if (entries == 0)
+			return bogeySpacing;
+		return diff / entries;
 	}
 
-	public void createEntity(Level level) {
-		Entity entity = EntityType.loadEntityRecursive(serialisedEntity, level, e -> {
-			e.moveTo(positionAnchor);
-			return e;
+	public void updateConductors() {
+		if (anyAvailableEntity() == null || entities.size() > 1)
+			return;
+		presentConductors.replace($ -> false);
+		for (DimensionalCarriageEntity dimensionalCarriageEntity : entities.values()) {
+			CarriageContraptionEntity entity = dimensionalCarriageEntity.entity.get();
+			if (entity != null && entity.isAlive())
+				presentConductors.replaceWithParams((current, checked) -> current || checked, entity.checkConductors());
+		}
+	}
+
+	private Set<ResourceKey<Level>> currentlyTraversedDimensions = new HashSet<>();
+
+	public void manageEntities(Level level) {
+		currentlyTraversedDimensions.clear();
+
+		bogeys.forEach(cb -> {
+			if (cb == null)
+				return;
+			cb.points.forEach(tp -> {
+				if (tp.node1 == null)
+					return;
+				currentlyTraversedDimensions.add(tp.node1.getLocation().dimension);
+			});
 		});
 
-		if (!(entity instanceof CarriageContraptionEntity cce))
-			return;
+		for (Iterator<Entry<ResourceKey<Level>, DimensionalCarriageEntity>> iterator = entities.entrySet()
+			.iterator(); iterator.hasNext();) {
+			Entry<ResourceKey<Level>, DimensionalCarriageEntity> entry = iterator.next();
 
-		cce.setGraph(train.graph == null ? null : train.graph.id);
-		cce.setCarriage(this);
-		cce.syncCarriage();
+			boolean discard =
+				!currentlyTraversedDimensions.isEmpty() && !currentlyTraversedDimensions.contains(entry.getKey());
+			ServerLevel currentLevel = level.getServer()
+				.getLevel(entry.getKey());
+			if (currentLevel == null)
+				continue;
 
-		this.entity = new WeakReference<>(cce);
+			DimensionalCarriageEntity dimensionalCarriageEntity = entry.getValue();
+			CarriageContraptionEntity entity = dimensionalCarriageEntity.entity.get();
 
-		if (level instanceof ServerLevel sl)
-			sl.tryAddFreshEntityWithPassengers(entity);
-	}
+			if (entity == null) {
+				if (discard)
+					iterator.remove();
+				else if (dimensionalCarriageEntity.positionAnchor != null && CarriageEntityHandler
+					.isActiveChunk(currentLevel, new BlockPos(dimensionalCarriageEntity.positionAnchor)))
+					dimensionalCarriageEntity.createEntity(currentLevel, anyAvailableEntity() == null);
 
-	public void manageEntity(Level level) {
-		CarriageContraptionEntity entity = this.entity.get();
-		if (entity == null) {
-			if (CarriageEntityHandler.isActiveChunk(level, new BlockPos(positionAnchor)))
-				createEntity(level);
-		} else {
-			CarriageEntityHandler.validateCarriageEntity(entity);
-			if (!entity.isAlive() || entity.leftTickingChunks) {
-				removeAndSaveEntity(entity);
-				return;
+			} else {
+				if (discard) {
+					discard = dimensionalCarriageEntity.discardTicks > 3;
+					dimensionalCarriageEntity.discardTicks++;
+				} else
+					dimensionalCarriageEntity.discardTicks = 0;
+
+				CarriageEntityHandler.validateCarriageEntity(entity);
+				if (!entity.isAlive() || entity.leftTickingChunks || discard) {
+					dimensionalCarriageEntity.removeAndSaveEntity(entity, discard);
+					if (discard)
+						iterator.remove();
+					continue;
+				}
+			}
+
+			entity = dimensionalCarriageEntity.entity.get();
+			if (entity != null && dimensionalCarriageEntity.positionAnchor != null) {
+				dimensionalCarriageEntity.alignEntity(entity);
+				entity.syncCarriage();
 			}
 		}
 
-		entity = this.entity.get();
-		if (entity == null)
-			return;
-
-		alignEntity(entity);
-		entity.syncCarriage();
-	}
-
-	private void removeAndSaveEntity(CarriageContraptionEntity entity) {
-		serialisedEntity = entity.serializeNBT();
-
-		for (Entity passenger : entity.getPassengers())
-			if (!(passenger instanceof Player))
-				passenger.discard();
-		entity.discard();
-
-		this.entity.clear();
 	}
 
 	public void updateContraptionAnchors() {
 		CarriageBogey leadingBogey = leadingBogey();
 		if (leadingBogey.points.either(t -> t.edge == null))
 			return;
-		positionAnchor = leadingBogey.getAnchorPosition();
-		rotationAnchors = bogeys.mapWithContext((b, first) -> isOnTwoBogeys() ? b.getAnchorPosition()
-			: leadingBogey.points.get(first)
-				.getPosition());
+		CarriageBogey trailingBogey = trailingBogey();
+		if (trailingBogey.points.either(t -> t.edge == null))
+			return;
+
+		ResourceKey<Level> leadingBogeyDim = leadingBogey.getDimension();
+		ResourceKey<Level> trailingBogeyDim = trailingBogey.getDimension();
+		double leadingWheelSpacing = leadingBogey.type.getWheelPointSpacing();
+		double trailingWheelSpacing = trailingBogey.type.getWheelPointSpacing();
+
+		for (boolean leading : Iterate.trueAndFalse) {
+			TravellingPoint point = leading ? getLeadingPoint() : getTrailingPoint();
+			TravellingPoint otherPoint = !leading ? getLeadingPoint() : getTrailingPoint();
+			ResourceKey<Level> dimension = point.node1.getLocation().dimension;
+			ResourceKey<Level> otherDimension = otherPoint.node1.getLocation().dimension;
+
+			if (dimension.equals(otherDimension) && leading) {
+				getDimensional(dimension).discardPivot();
+				continue;
+			}
+
+			DimensionalCarriageEntity dce = getDimensional(dimension);
+
+			dce.positionAnchor = dimension.equals(leadingBogeyDim) ? leadingBogey.getAnchorPosition()
+				: pivoted(dce, dimension, point,
+					leading ? leadingWheelSpacing / 2 : bogeySpacing + trailingWheelSpacing / 2);
+
+			int prevmin = dce.minAllowedLocalCoord();
+			int prevmax = dce.maxAllowedLocalCoord();
+
+			dce.updateCutoff(leading);
+			if (prevmin != dce.minAllowedLocalCoord() || prevmax != dce.maxAllowedLocalCoord()) {
+				dce.updateRenderedCutoff();
+				dce.updatePassengerLoadout();
+			}
+
+			if (isOnTwoBogeys()) {
+				dce.rotationAnchors.setFirst(dimension.equals(leadingBogeyDim) ? leadingBogey.getAnchorPosition()
+					: pivoted(dce, dimension, point,
+						leading ? leadingWheelSpacing / 2 : bogeySpacing + trailingWheelSpacing / 2));
+				dce.rotationAnchors.setSecond(dimension.equals(trailingBogeyDim) ? trailingBogey.getAnchorPosition()
+					: pivoted(dce, dimension, point,
+						leading ? leadingWheelSpacing / 2 + bogeySpacing : trailingWheelSpacing / 2));
+				continue;
+			}
+
+			if (dimension.equals(otherDimension)) {
+				dce.rotationAnchors = leadingBogey.points.map(TravellingPoint::getPosition);
+				continue;
+			}
+
+			dce.rotationAnchors.setFirst(leadingBogey.points.getFirst() == point ? point.getPosition()
+				: pivoted(dce, dimension, point, leadingWheelSpacing));
+			dce.rotationAnchors.setSecond(leadingBogey.points.getSecond() == point ? point.getPosition()
+				: pivoted(dce, dimension, point, leadingWheelSpacing));
+		}
+
 	}
 
-	public void alignEntity(CarriageContraptionEntity entity) {
-		Vec3 positionVec = rotationAnchors.getFirst();
-		Vec3 coupledVec = rotationAnchors.getSecond();
+	private Vec3 pivoted(DimensionalCarriageEntity dce, ResourceKey<Level> dimension, TravellingPoint start,
+		double offset) {
+		if (train.graph == null)
+			return dce.pivot == null ? null : dce.pivot.getLocation();
+		TrackNodeLocation pivot = dce.findPivot(dimension, start == getLeadingPoint());
+		if (pivot == null)
+			return null;
+		Vec3 startVec = start.getPosition();
+		Vec3 portalVec = pivot.getLocation()
+			.add(0, 1, 0);
+		return VecHelper.lerp((float) (offset / startVec.distanceTo(portalVec)), startVec, portalVec);
+	}
 
-		double diffX = positionVec.x - coupledVec.x;
-		double diffY = positionVec.y - coupledVec.y;
-		double diffZ = positionVec.z - coupledVec.z;
-
-		entity.setPos(positionAnchor);
-		entity.prevYaw = entity.yaw;
-		entity.prevPitch = entity.pitch;
-
-		entity.yaw = (float) (Mth.atan2(diffZ, diffX) * 180 / Math.PI) + 180;
-		entity.pitch = (float) (Math.atan2(diffY, Math.sqrt(diffX * diffX + diffZ * diffZ)) * 180 / Math.PI) * -1;
-
-		if (entity.firstPositionUpdate) {
-			entity.xo = entity.getX();
-			entity.yo = entity.getY();
-			entity.zo = entity.getZ();
-			entity.prevYaw = entity.yaw;
-			entity.prevPitch = entity.pitch;
+	public void alignEntity(Level level) {
+		DimensionalCarriageEntity dimensionalCarriageEntity = entities.get(level.dimension());
+		if (dimensionalCarriageEntity != null) {
+			CarriageContraptionEntity entity = dimensionalCarriageEntity.entity.get();
+			if (entity != null)
+				dimensionalCarriageEntity.alignEntity(entity);
 		}
 	}
 
@@ -268,41 +395,79 @@ public class Carriage {
 		return bogeys.getSecond() != null;
 	}
 
-	public Vec3 leadingAnchor() {
-		return isOnTwoBogeys() ? rotationAnchors.getFirst() : positionAnchor;
+	public CarriageContraptionEntity anyAvailableEntity() {
+		for (DimensionalCarriageEntity dimensionalCarriageEntity : entities.values()) {
+			CarriageContraptionEntity entity = dimensionalCarriageEntity.entity.get();
+			if (entity != null)
+				return entity;
+		}
+		return null;
 	}
 
-	public Vec3 trailingAnchor() {
-		return isOnTwoBogeys() ? rotationAnchors.getSecond() : positionAnchor;
+	public void forEachPresentEntity(Consumer<CarriageContraptionEntity> callback) {
+		for (DimensionalCarriageEntity dimensionalCarriageEntity : entities.values()) {
+			CarriageContraptionEntity entity = dimensionalCarriageEntity.entity.get();
+			if (entity != null)
+				callback.accept(entity);
+		}
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag tag = new CompoundTag();
 		tag.put("FirstBogey", bogeys.getFirst()
-			.write());
+			.write(dimensions));
 		if (isOnTwoBogeys())
 			tag.put("SecondBogey", bogeys.getSecond()
-				.write());
+				.write(dimensions));
 		tag.putInt("Spacing", bogeySpacing);
 		tag.putBoolean("FrontConductor", presentConductors.getFirst());
 		tag.putBoolean("BackConductor", presentConductors.getSecond());
 		tag.putBoolean("Stalled", stalled);
 
-		CarriageContraptionEntity entity = this.entity.get();
-		if (entity != null)
-			serialisedEntity = entity.serializeNBT();
+		Map<Integer, CompoundTag> passengerMap = new HashMap<>();
+
+		for (DimensionalCarriageEntity dimensionalCarriageEntity : entities.values()) {
+			CarriageContraptionEntity entity = dimensionalCarriageEntity.entity.get();
+			if (entity == null)
+				continue;
+			serialize(entity);
+			Contraption contraption = entity.getContraption();
+			if (contraption == null)
+				continue;
+			Map<UUID, Integer> mapping = contraption.getSeatMapping();
+			for (Entity passenger : entity.getPassengers())
+				if (mapping.containsKey(passenger.getUUID()))
+					passengerMap.put(mapping.get(passenger.getUUID()), passenger.serializeNBT());
+		}
 
 		tag.put("Entity", serialisedEntity.copy());
-		tag.put("PositionAnchor", VecHelper.writeNBT(positionAnchor));
-		tag.put("RotationAnchors", rotationAnchors.serializeEach(VecHelper::writeNBTCompound));
+
+		CompoundTag passengerTag = new CompoundTag();
+		passengerMap.putAll(serialisedPassengers);
+		passengerMap.forEach((seat, nbt) -> passengerTag.put("Seat" + seat, nbt.copy()));
+		tag.put("Passengers", passengerTag);
+
+		tag.put("EntityPositioning", NBTHelper.writeCompoundList(entities.entrySet(), e -> {
+			CompoundTag c = e.getValue()
+				.write();
+			c.putInt("Dim", dimensions.encode(e.getKey()));
+			return c;
+		}));
 
 		return tag;
 	}
 
-	public static Carriage read(CompoundTag tag, TrackGraph graph) {
-		CarriageBogey bogey1 = CarriageBogey.read(tag.getCompound("FirstBogey"), graph);
+	private void serialize(Entity entity) {
+		serialisedEntity = entity.serializeNBT();
+		serialisedEntity.remove("Passengers");
+		serialisedEntity.getCompound("Contraption")
+			.remove("Passengers");
+	}
+
+	public static Carriage read(CompoundTag tag, TrackGraph graph, DimensionPalette dimensions) {
+		CarriageBogey bogey1 = CarriageBogey.read(tag.getCompound("FirstBogey"), graph, dimensions);
 		CarriageBogey bogey2 =
-			tag.contains("SecondBogey") ? CarriageBogey.read(tag.getCompound("SecondBogey"), graph) : null;
+			tag.contains("SecondBogey") ? CarriageBogey.read(tag.getCompound("SecondBogey"), graph, dimensions) : null;
 
 		Carriage carriage = new Carriage(bogey1, bogey2, tag.getInt("Spacing"));
 
@@ -311,13 +476,373 @@ public class Carriage {
 		carriage.serialisedEntity = tag.getCompound("Entity")
 			.copy();
 
-		if (carriage.positionAnchor == null) {
-			carriage.positionAnchor = VecHelper.readNBT(tag.getList("PositionAnchor", Tag.TAG_DOUBLE));
-			carriage.rotationAnchors =
-				Couple.deserializeEach(tag.getList("RotationAnchors", Tag.TAG_COMPOUND), VecHelper::readNBTCompound);
-		}
+		NBTHelper.iterateCompoundList(tag.getList("EntityPositioning", Tag.TAG_COMPOUND),
+			c -> carriage.getDimensional(dimensions.decode(c.getInt("Dim")))
+				.read(c));
+
+		CompoundTag passengersTag = tag.getCompound("Passengers");
+		passengersTag.getAllKeys()
+			.forEach(key -> carriage.serialisedPassengers.put(Integer.valueOf(key.substring(4)),
+				passengersTag.getCompound(key)));
 
 		return carriage;
 	}
 
+	private TravellingPoint portalScout = new TravellingPoint();
+
+	public class DimensionalCarriageEntity {
+		public Vec3 positionAnchor;
+		public Couple<Vec3> rotationAnchors;
+		public WeakReference<CarriageContraptionEntity> entity;
+
+		public TrackNodeLocation pivot;
+		int discardTicks;
+
+		// 0 == whole, 0..1 = fading out, -1..0 = fading in
+		public float cutoff;
+
+		// client
+		public boolean pointsInitialised;
+
+		public DimensionalCarriageEntity() {
+			this.entity = new WeakReference<>(null);
+			this.rotationAnchors = Couple.create(null, null);
+			this.pointsInitialised = false;
+		}
+
+		public void discardPivot() {
+			float prevCutoff = cutoff;
+			cutoff = 0;
+			pivot = null;
+			if (!serialisedPassengers.isEmpty() || !Mth.equal(prevCutoff, cutoff)) {
+				updatePassengerLoadout();
+				updateRenderedCutoff();
+			}
+		}
+
+		public void updateCutoff(boolean leadingIsCurrent) {
+			Vec3 leadingAnchor = rotationAnchors.getFirst();
+			Vec3 trailingAnchor = rotationAnchors.getSecond();
+
+			if (leadingAnchor == null || trailingAnchor == null)
+				return;
+			if (pivot == null) {
+				cutoff = 0;
+				return;
+			}
+
+			Vec3 pivotLoc = pivot.getLocation()
+				.add(0, 1, 0);
+
+			double leadingSpacing = leadingBogey().type.getWheelPointSpacing() / 2;
+			double trailingSpacing = trailingBogey().type.getWheelPointSpacing() / 2;
+			double anchorSpacing = leadingSpacing + bogeySpacing + trailingSpacing;
+
+			if (isOnTwoBogeys()) {
+				Vec3 diff = trailingAnchor.subtract(leadingAnchor)
+					.normalize();
+				trailingAnchor = trailingAnchor.add(diff.scale(trailingSpacing));
+				leadingAnchor = leadingAnchor.add(diff.scale(-leadingSpacing));
+			}
+
+			double leadingDiff = leadingAnchor.distanceTo(pivotLoc);
+			double trailingDiff = trailingAnchor.distanceTo(pivotLoc);
+
+			leadingDiff /= anchorSpacing;
+			trailingDiff /= anchorSpacing;
+
+			if (leadingIsCurrent && leadingDiff > trailingDiff && leadingDiff > 1)
+				cutoff = 0;
+			else if (leadingIsCurrent && leadingDiff < trailingDiff && trailingDiff > 1)
+				cutoff = 1;
+			else if (!leadingIsCurrent && leadingDiff > trailingDiff && leadingDiff > 1)
+				cutoff = -1;
+			else if (!leadingIsCurrent && leadingDiff < trailingDiff && trailingDiff > 1)
+				cutoff = 0;
+			else
+				cutoff = (float) Mth.clamp(1 - (leadingIsCurrent ? leadingDiff : trailingDiff), 0, 1)
+					* (leadingIsCurrent ? 1 : -1);
+		}
+
+		public TrackNodeLocation findPivot(ResourceKey<Level> dimension, boolean leading) {
+			if (pivot != null)
+				return pivot;
+
+			TravellingPoint start = leading ? getLeadingPoint() : getTrailingPoint();
+			TravellingPoint end = !leading ? getLeadingPoint() : getTrailingPoint();
+
+			portalScout.node1 = start.node1;
+			portalScout.node2 = start.node2;
+			portalScout.edge = start.edge;
+			portalScout.position = start.position;
+
+			ITrackSelector trackSelector = portalScout.follow(end);
+			int distance = bogeySpacing + 10;
+			int direction = leading ? -1 : 1;
+
+			portalScout.travel(train.graph, direction * distance, trackSelector, portalScout.ignoreEdgePoints(),
+				portalScout.ignoreTurns(), nodes -> {
+					for (boolean b : Iterate.trueAndFalse)
+						if (nodes.get(b).dimension.equals(dimension))
+							pivot = nodes.get(b);
+					return true;
+				});
+
+			return pivot;
+		}
+
+		public CompoundTag write() {
+			CompoundTag tag = new CompoundTag();
+			tag.putFloat("Cutoff", cutoff);
+			tag.putInt("DiscardTicks", discardTicks);
+			if (pivot != null)
+				tag.put("Pivot", pivot.write(null));
+			if (positionAnchor != null)
+				tag.put("PositionAnchor", VecHelper.writeNBT(positionAnchor));
+			if (rotationAnchors.both(Objects::nonNull))
+				tag.put("RotationAnchors", rotationAnchors.serializeEach(VecHelper::writeNBTCompound));
+			return tag;
+		}
+
+		public void read(CompoundTag tag) {
+			cutoff = tag.getFloat("Cutoff");
+			discardTicks = tag.getInt("DiscardTicks");
+			if (tag.contains("Pivot"))
+				pivot = TrackNodeLocation.read(tag.getCompound("Pivot"), null);
+			if (positionAnchor != null)
+				return;
+			if (tag.contains("PositionAnchor"))
+				positionAnchor = VecHelper.readNBT(tag.getList("PositionAnchor", Tag.TAG_DOUBLE));
+			if (tag.contains("RotationAnchors"))
+				rotationAnchors = Couple.deserializeEach(tag.getList("RotationAnchors", Tag.TAG_COMPOUND),
+					VecHelper::readNBTCompound);
+		}
+
+		public Vec3 leadingAnchor() {
+			return isOnTwoBogeys() ? rotationAnchors.getFirst() : positionAnchor;
+		}
+
+		public Vec3 trailingAnchor() {
+			return isOnTwoBogeys() ? rotationAnchors.getSecond() : positionAnchor;
+		}
+
+		public int minAllowedLocalCoord() {
+			if (cutoff <= 0)
+				return Integer.MIN_VALUE;
+			if (cutoff >= 1)
+				return Integer.MAX_VALUE;
+			return Mth.floor(-bogeySpacing + -1 + (2 + bogeySpacing) * cutoff);
+		}
+
+		public int maxAllowedLocalCoord() {
+			if (cutoff >= 0)
+				return Integer.MAX_VALUE;
+			if (cutoff <= -1)
+				return Integer.MIN_VALUE;
+			return Mth.ceil(-bogeySpacing + -1 + (2 + bogeySpacing) * (cutoff + 1));
+		}
+
+		public void updatePassengerLoadout() {
+			Entity entity = this.entity.get();
+			if (!(entity instanceof CarriageContraptionEntity cce))
+				return;
+			if (!(entity.level instanceof ServerLevel sLevel))
+				return;
+
+			Set<Integer> loadedPassengers = new HashSet<>();
+			int min = minAllowedLocalCoord();
+			int max = maxAllowedLocalCoord();
+
+			for (Entry<Integer, CompoundTag> entry : serialisedPassengers.entrySet()) {
+				Integer seatId = entry.getKey();
+				List<BlockPos> seats = cce.getContraption()
+					.getSeats();
+				if (seatId >= seats.size())
+					continue;
+
+				BlockPos localPos = seats.get(seatId);
+				if (!cce.isLocalCoordWithin(localPos, min, max))
+					continue;
+
+				CompoundTag tag = entry.getValue();
+				Entity passenger = null;
+
+				if (tag.contains("PlayerPassenger")) {
+					passenger = sLevel.getServer()
+						.getPlayerList()
+						.getPlayer(tag.getUUID("PlayerPassenger"));
+
+				} else {
+					passenger = EntityType.loadEntityRecursive(tag, entity.level, e -> {
+						e.moveTo(positionAnchor);
+						return e;
+					});
+					if (passenger != null)
+						sLevel.tryAddFreshEntityWithPassengers(passenger);
+				}
+
+				if (passenger != null) {
+					ResourceKey<Level> passengerDimension = passenger.level.dimension();
+					if (!passengerDimension.equals(sLevel.dimension()) && passenger instanceof ServerPlayer sp)
+						continue;
+					cce.addSittingPassenger(passenger, seatId);
+				}
+
+				loadedPassengers.add(seatId);
+			}
+
+			loadedPassengers.forEach(serialisedPassengers::remove);
+
+			Map<UUID, Integer> mapping = cce.getContraption()
+				.getSeatMapping();
+			for (Entity passenger : entity.getPassengers()) {
+				BlockPos localPos = cce.getContraption()
+					.getSeatOf(passenger.getUUID());
+				if (cce.isLocalCoordWithin(localPos, min, max))
+					continue;
+				if (!mapping.containsKey(passenger.getUUID()))
+					continue;
+
+				Integer seat = mapping.get(passenger.getUUID());
+				if ((passenger instanceof ServerPlayer sp)) {
+					dismountPlayer(sLevel, sp, seat, true);
+					continue;
+				}
+
+				serialisedPassengers.put(seat, passenger.serializeNBT());
+				passenger.discard();
+			}
+
+		}
+
+		private void dismountPlayer(ServerLevel sLevel, ServerPlayer sp, Integer seat, boolean portal) {
+			if (!portal) {
+				sp.stopRiding();
+				return;
+			}
+
+			CompoundTag tag = new CompoundTag();
+			tag.putUUID("PlayerPassenger", sp.getUUID());
+			serialisedPassengers.put(seat, tag);
+			sp.stopRiding();
+			sp.getPersistentData()
+				.remove("ContraptionDismountLocation");
+
+			for (Entry<ResourceKey<Level>, DimensionalCarriageEntity> other : entities.entrySet()) {
+				DimensionalCarriageEntity otherDce = other.getValue();
+				if (otherDce == this)
+					continue;
+				if (sp.level.dimension()
+					.equals(other.getKey()))
+					continue;
+				if (otherDce.pivot == null)
+					continue;
+				Vec3 loc = otherDce.pivot.getLocation();
+				ServerLevel level = sLevel.getServer()
+					.getLevel(other.getKey());
+				sp.teleportTo(level, loc.x, loc.y, loc.z, sp.getYRot(), sp.getXRot());
+				sp.setPortalCooldown();
+			}
+		}
+
+		public void updateRenderedCutoff() {
+			Entity entity = this.entity.get();
+			if (!(entity instanceof CarriageContraptionEntity cce))
+				return;
+			if (!entity.level.isClientSide())
+				return;
+			Contraption contraption = cce.getContraption();
+			if (!(contraption instanceof CarriageContraption cc))
+				return;
+			cc.portalCutoffMin = minAllowedLocalCoord();
+			cc.portalCutoffMax = maxAllowedLocalCoord();
+			DistExecutor.unsafeRunWhenOn(Dist.CLIENT, () -> () -> invalidate(cce));
+		}
+
+		@OnlyIn(Dist.CLIENT)
+		private void invalidate(CarriageContraptionEntity entity) {
+			ContraptionRenderDispatcher.invalidate(entity.getContraption());
+			entity.updateRenderedPortalCutoff();
+		}
+
+		private void createEntity(Level level, boolean loadPassengers) {
+			Entity entity = EntityType.loadEntityRecursive(serialisedEntity, level, e -> {
+				e.moveTo(positionAnchor);
+				return e;
+			});
+
+			if (!(entity instanceof CarriageContraptionEntity cce)) {
+				train.invalid = true;
+				return;
+			}
+
+			cce.setGraph(train.graph == null ? null : train.graph.id);
+			cce.setCarriage(Carriage.this);
+			cce.syncCarriage();
+
+			this.entity = new WeakReference<>(cce);
+
+			if (level instanceof ServerLevel sl)
+				sl.tryAddFreshEntityWithPassengers(entity);
+
+			updatePassengerLoadout();
+		}
+
+		private void removeAndSaveEntity(CarriageContraptionEntity entity, boolean portal) {
+			Contraption contraption = entity.getContraption();
+			if (contraption != null) {
+				Map<UUID, Integer> mapping = contraption.getSeatMapping();
+				for (Entity passenger : entity.getPassengers()) {
+					if (!mapping.containsKey(passenger.getUUID()))
+						continue;
+
+					Integer seat = mapping.get(passenger.getUUID());
+
+					if (passenger instanceof ServerPlayer sp) {
+						dismountPlayer(sp.getLevel(), sp, seat, portal);
+						continue;
+					}
+
+					serialisedPassengers.put(seat, passenger.serializeNBT());
+				}
+			}
+
+			for (Entity passenger : entity.getPassengers())
+				if (!(passenger instanceof Player))
+					passenger.discard();
+
+			serialize(entity);
+			entity.discard();
+			this.entity.clear();
+		}
+
+		public void alignEntity(CarriageContraptionEntity entity) {
+			if (rotationAnchors.either(Objects::isNull))
+				return;
+
+			Vec3 positionVec = rotationAnchors.getFirst();
+			Vec3 coupledVec = rotationAnchors.getSecond();
+
+			double diffX = positionVec.x - coupledVec.x;
+			double diffY = positionVec.y - coupledVec.y;
+			double diffZ = positionVec.z - coupledVec.z;
+
+			entity.setPos(positionAnchor);
+			entity.prevYaw = entity.yaw;
+			entity.prevPitch = entity.pitch;
+
+			entity.yaw = (float) (Mth.atan2(diffZ, diffX) * 180 / Math.PI) + 180;
+			entity.pitch = (float) (Math.atan2(diffY, Math.sqrt(diffX * diffX + diffZ * diffZ)) * 180 / Math.PI) * -1;
+
+			if (!entity.firstPositionUpdate)
+				return;
+
+			entity.xo = entity.getX();
+			entity.yo = entity.getY();
+			entity.zo = entity.getZ();
+			entity.prevYaw = entity.yaw;
+			entity.prevPitch = entity.pitch;
+		}
+	}
+
 }

src/main/java/com/simibubi/create/content/logistics/trains/entity/CarriageBogey.java

@@ -4,6 +4,7 @@ import javax.annotation.Nullable;
 
 import com.jozufozu.flywheel.api.MaterialManager;
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.IBogeyBlock;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
 import com.simibubi.create.foundation.utility.AngleHelper;
@@ -15,8 +16,10 @@ import com.simibubi.create.foundation.utility.animation.LerpedFloat;
 import net.minecraft.core.Direction.Axis;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.Tag;
+import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.util.Mth;
+import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.phys.Vec3;
 import net.minecraftforge.registries.ForgeRegistries;
@@ -48,6 +51,20 @@ public class CarriageBogey {
 		couplingAnchors = Couple.create(null, null);
 	}
 
+	public ResourceKey<Level> getDimension() {
+		TravellingPoint leading = leading();
+		TravellingPoint trailing = trailing();
+		if (leading.edge == null || trailing.edge == null)
+			return null;
+		if (leading.edge.isInterDimensional() || trailing.edge.isInterDimensional())
+			return null;
+		ResourceKey<Level> dimension1 = leading.node1.getLocation().dimension;
+		ResourceKey<Level> dimension2 = trailing.node1.getLocation().dimension;
+		if (dimension1.equals(dimension2))
+			return dimension1;
+		return null;
+	}
+
 	public void updateAngles(CarriageContraptionEntity entity, double distanceMoved) {
 		double angleDiff = 360 * distanceMoved / (Math.PI * 2 * type.getWheelRadius());
 
@@ -56,6 +73,10 @@ public class CarriageBogey {
 
 		if (leading().edge == null || carriage.train.derailed) {
 			yRot = -90 + entity.yaw - derailAngle;
+		} else if (!entity.level.dimension()
+			.equals(getDimension())) {
+			yRot = -90 + entity.yaw;
+			xRot = 0;
 		} else {
 			Vec3 positionVec = leading().getPosition();
 			Vec3 coupledVec = trailing().getPosition();
@@ -86,6 +107,8 @@ public class CarriageBogey {
 	}
 
 	public double getStress() {
+		if (getDimension() == null)
+			return 0;
 		return type.getWheelPointSpacing() - leading().getPosition()
 			.distanceTo(trailing().getPosition());
 	}
@@ -119,19 +142,19 @@ public class CarriageBogey {
 		couplingAnchors.set(leading, entityPos.add(thisOffset));
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag tag = new CompoundTag();
 		tag.putString("Type", ((Block) type).getRegistryName()
 			.toString());
-		tag.put("Points", points.serializeEach(TravellingPoint::write));
+		tag.put("Points", points.serializeEach(tp -> tp.write(dimensions)));
 		return tag;
 	}
 
-	public static CarriageBogey read(CompoundTag tag, TrackGraph graph) {
+	public static CarriageBogey read(CompoundTag tag, TrackGraph graph, DimensionPalette dimensions) {
 		ResourceLocation location = new ResourceLocation(tag.getString("Type"));
 		IBogeyBlock type = (IBogeyBlock) ForgeRegistries.BLOCKS.getValue(location);
-		Couple<TravellingPoint> points =
-			Couple.deserializeEach(tag.getList("Points", Tag.TAG_COMPOUND), c -> TravellingPoint.read(c, graph));
+		Couple<TravellingPoint> points = Couple.deserializeEach(tag.getList("Points", Tag.TAG_COMPOUND),
+			c -> TravellingPoint.read(c, graph, dimensions));
 		CarriageBogey carriageBogey = new CarriageBogey(type, points.getFirst(), points.getSecond());
 		return carriageBogey;
 	}

src/main/java/com/simibubi/create/content/logistics/trains/entity/CarriageContraption.java

@@ -1,9 +1,12 @@
 package com.simibubi.create.content.logistics.trains.entity;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Optional;
 
 import org.apache.commons.lang3.tuple.Pair;
 
@@ -25,14 +28,17 @@ import com.simibubi.create.foundation.utility.VecHelper;
 
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
+import net.minecraft.core.Direction.Axis;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.ListTag;
 import net.minecraft.nbt.NbtUtils;
 import net.minecraft.nbt.Tag;
 import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplate.StructureBlockInfo;
+import net.minecraft.world.phys.AABB;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 
@@ -51,11 +57,17 @@ public class CarriageContraption extends Contraption {
 	private BlockPos secondBogeyPos;
 	private List<BlockPos> assembledBlazeBurners;
 
+	// render
+	public int portalCutoffMin;
+	public int portalCutoffMax;
+
 	public CarriageContraption() {
 		conductorSeats = new HashMap<>();
 		assembledBlazeBurners = new ArrayList<>();
 		blazeBurnerConductors = Couple.create(false, false);
 		soundQueue = new ArrivalSoundQueue();
+		portalCutoffMin = Integer.MIN_VALUE;
+		portalCutoffMax = Integer.MAX_VALUE;
 	}
 
 	public void setSoundQueueOffset(int offset) {
@@ -216,4 +228,70 @@ public class CarriageContraption extends Contraption {
 		return secondBogeyPos;
 	}
 
+	private Collection<BlockEntity> specialRenderedTEsOutsidePortal = new ArrayList<>();
+
+	@Override
+	public Collection<StructureBlockInfo> getRenderedBlocks() {
+		if (notInPortal())
+			return super.getRenderedBlocks();
+
+		specialRenderedTEsOutsidePortal = new ArrayList<>();
+		specialRenderedTileEntities.stream()
+			.filter(te -> !isHiddenInPortal(te.getBlockPos()))
+			.forEach(specialRenderedTEsOutsidePortal::add);
+
+		Collection<StructureBlockInfo> values = new ArrayList<>();
+		for (Entry<BlockPos, StructureBlockInfo> entry : blocks.entrySet()) {
+			BlockPos pos = entry.getKey();
+			if (withinVisible(pos))
+				values.add(entry.getValue());
+			else if (atSeam(pos))
+				values.add(new StructureBlockInfo(pos, Blocks.PURPLE_STAINED_GLASS.defaultBlockState(), null));
+		}
+		return values;
+	}
+
+	@Override
+	public Collection<BlockEntity> getSpecialRenderedTEs() {
+		if (notInPortal())
+			return super.getSpecialRenderedTEs();
+		return specialRenderedTEsOutsidePortal;
+	}
+
+	@Override
+	public Optional<List<AABB>> getSimplifiedEntityColliders() {
+		if (notInPortal())
+			return super.getSimplifiedEntityColliders();
+		return Optional.empty();
+	}
+
+	@Override
+	public boolean isHiddenInPortal(BlockPos localPos) {
+		if (notInPortal())
+			return super.isHiddenInPortal(localPos);
+		return !withinVisible(localPos) || atSeam(localPos);
+	}
+
+	private boolean notInPortal() {
+		return portalCutoffMin == Integer.MIN_VALUE && portalCutoffMax == Integer.MAX_VALUE;
+	}
+
+	public boolean atSeam(BlockPos localPos) {
+		Direction facing = assemblyDirection;
+		Axis axis = facing.getClockWise()
+			.getAxis();
+		int coord = axis.choose(localPos.getZ(), localPos.getY(), localPos.getX()) * -facing.getAxisDirection()
+			.getStep();
+		return coord == portalCutoffMin || coord == portalCutoffMax;
+	}
+
+	public boolean withinVisible(BlockPos localPos) {
+		Direction facing = assemblyDirection;
+		Axis axis = facing.getClockWise()
+			.getAxis();
+		int coord = axis.choose(localPos.getZ(), localPos.getY(), localPos.getX()) * -facing.getAxisDirection()
+			.getStep();
+		return coord > portalCutoffMin && coord < portalCutoffMax;
+	}
+
 }

src/main/java/com/simibubi/create/content/logistics/trains/entity/CarriageContraptionEntity.java

@@ -2,8 +2,10 @@ package com.simibubi.create.content.logistics.trains.entity;
 
 import java.lang.ref.WeakReference;
 import java.util.Collection;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Optional;
+import java.util.Set;
 import java.util.UUID;
 
 import javax.annotation.Nullable;
@@ -14,9 +16,13 @@ import com.simibubi.create.AllEntityDataSerializers;
 import com.simibubi.create.AllEntityTypes;
 import com.simibubi.create.Create;
 import com.simibubi.create.CreateClient;
+import com.simibubi.create.content.contraptions.components.structureMovement.MovementBehaviour;
+import com.simibubi.create.content.contraptions.components.structureMovement.MovementContext;
 import com.simibubi.create.content.contraptions.components.structureMovement.OrientedContraptionEntity;
 import com.simibubi.create.content.contraptions.components.structureMovement.interaction.controls.ControlsBlock;
+import com.simibubi.create.content.contraptions.particle.CubeParticleData;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
+import com.simibubi.create.content.logistics.trains.entity.Carriage.DimensionalCarriageEntity;
 import com.simibubi.create.content.logistics.trains.entity.TravellingPoint.SteerDirection;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.station.GlobalStation;
 import com.simibubi.create.foundation.config.AllConfigs;
@@ -44,6 +50,8 @@ import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplate.StructureBlockInfo;
 import net.minecraft.world.phys.Vec3;
+import net.minecraftforge.api.distmarker.Dist;
+import net.minecraftforge.api.distmarker.OnlyIn;
 
 public class CarriageContraptionEntity extends OrientedContraptionEntity {
 
@@ -125,6 +133,17 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 		return entityData.get(SCHEDULED);
 	}
 
+	public boolean isLocalCoordWithin(BlockPos localPos, int min, int max) {
+		if (!(getContraption()instanceof CarriageContraption cc))
+			return false;
+		Direction facing = cc.getAssemblyDirection();
+		Axis axis = facing.getClockWise()
+			.getAxis();
+		int coord = axis.choose(localPos.getZ(), localPos.getY(), localPos.getX()) * -facing.getAxisDirection()
+			.getStep();
+		return coord >= min && coord <= max;
+	}
+
 	public static CarriageContraptionEntity create(Level world, CarriageContraption contraption) {
 		CarriageContraptionEntity entity =
 			new CarriageContraptionEntity(AllEntityTypes.CARRIAGE_CONTRAPTION.get(), world);
@@ -162,8 +181,12 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 				if (train == null || train.carriages.size() <= carriageIndex)
 					return;
 				carriage = train.carriages.get(carriageIndex);
-				if (carriage != null)
-					carriage.entity = new WeakReference<>(this);
+				if (carriage != null) {
+					DimensionalCarriageEntity dimensional = carriage.getDimensional(level);
+					dimensional.entity = new WeakReference<>(this);
+					dimensional.pivot = null;
+					carriage.updateContraptionAnchors();
+				}
 				updateTrackGraph();
 			} else
 				discard();
@@ -201,7 +224,9 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 			return;
 		}
 
-		if (!carriage.pointsInitialised)
+		DimensionalCarriageEntity dce = carriage.getDimensional(level);
+
+		if (!dce.pointsInitialised)
 			return;
 
 		carriageData.approach(this, carriage, 1f / getType().updateInterval());
@@ -213,7 +238,7 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 		yo = getY();
 		zo = getZ();
 
-		carriage.alignEntity(this);
+		dce.alignEntity(this);
 
 		double distanceTo = 0;
 		if (!firstPositionUpdate) {
@@ -232,6 +257,8 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 
 		if (carriage.train.derailed)
 			spawnDerailParticles(carriage);
+		if (dce.pivot != null)
+			spawnPortalParticles(dce);
 
 		firstPositionUpdate = false;
 		validForRender = true;
@@ -247,7 +274,7 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 			for (int index = 0; index < carriageCount; index++) {
 				int i = arrivalSoundReversed ? carriageCount - 1 - index : index;
 				Carriage carriage = carriages.get(i);
-				CarriageContraptionEntity entity = carriage.entity.get();
+				CarriageContraptionEntity entity = carriage.getDimensional(level).entity.get();
 				if (entity == null || !(entity.contraption instanceof CarriageContraption otherCC))
 					break;
 				tick = arrivalSoundReversed ? otherCC.soundQueue.lastTick() : otherCC.soundQueue.firstTick();
@@ -268,7 +295,7 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 
 		boolean keepTicking = false;
 		for (Carriage c : carriages) {
-			CarriageContraptionEntity entity = c.entity.get();
+			CarriageContraptionEntity entity = c.getDimensional(level).entity.get();
 			if (entity == null || !(entity.contraption instanceof CarriageContraption otherCC))
 				continue;
 			keepTicking |= otherCC.soundQueue.tick(entity, arrivalSoundTicks, arrivalSoundReversed);
@@ -287,6 +314,11 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 		super.tickActors();
 	}
 
+	@Override
+	protected boolean isActorActive(MovementContext context, MovementBehaviour actor) {
+		return !getContraption().isHiddenInPortal(context.localPos) && super.isActorActive(context, actor);
+	}
+
 	@Override
 	protected void handleStallInformation(float x, float y, float z, float angle) {}
 
@@ -300,12 +332,49 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 		}
 	}
 
+	private Set<BlockPos> particleSlice = new HashSet<>();
+	private float particleAvgY = 0;
+
+	private void spawnPortalParticles(DimensionalCarriageEntity dce) {
+		Vec3 pivot = dce.pivot.getLocation()
+			.add(0, 1.5f, 0);
+		if (particleSlice.isEmpty())
+			return;
+
+		boolean alongX = Mth.equal(pivot.x, Math.round(pivot.x));
+		int extraFlip = Direction.fromYRot(yaw)
+			.getAxisDirection()
+			.getStep();
+
+		Vec3 emitter = pivot.add(0, particleAvgY, 0);
+		double speed = position().distanceTo(getPrevPositionVec());
+		int size = (int) (particleSlice.size() * Mth.clamp(4 - speed * 4, 0, 4));
+
+		for (BlockPos pos : particleSlice) {
+			if (size != 0 && random.nextInt(size) != 0)
+				continue;
+			if (alongX)
+				pos = new BlockPos(0, pos.getY(), pos.getX());
+			Vec3 v = pivot.add(pos.getX() * extraFlip, pos.getY(), pos.getZ() * extraFlip);
+			CubeParticleData data =
+				new CubeParticleData(.25f, 0, .5f, .65f + (random.nextFloat() - .5f) * .25f, 4, false);
+			Vec3 m = v.subtract(emitter)
+				.normalize()
+				.scale(.325f);
+			m = VecHelper.rotate(m, random.nextFloat() * 360, alongX ? Axis.X : Axis.Z);
+			m = m.add(VecHelper.offsetRandomly(Vec3.ZERO, random, 0.25f));
+			level.addParticle(data, v.x, v.y, v.z, m.x, m.y, m.z);
+		}
+
+	}
+
 	@Override
 	public void onClientRemoval() {
 		super.onClientRemoval();
 		entityData.set(CARRIAGE_DATA, new CarriageSyncData());
 		if (carriage != null) {
-			carriage.pointsInitialised = false;
+			DimensionalCarriageEntity dce = carriage.getDimensional(level);
+			dce.pointsInitialised = false;
 			carriage.leadingBogey().couplingAnchors = Couple.create(null, null);
 			carriage.trailingBogey().couplingAnchors = Couple.create(null, null);
 		}
@@ -467,7 +536,9 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 
 			if (lookAhead != null) {
 				if (spaceDown) {
+					carriage.train.manualTick = true;
 					nav.startNavigation(lookAhead, -1, false);
+					carriage.train.manualTick = false;
 					navDistanceTotal = nav.distanceToDestination;
 					return true;
 				}
@@ -541,4 +612,69 @@ public class CarriageContraptionEntity extends OrientedContraptionEntity {
 		prevPosInvalid = true;
 	}
 
+	@Override
+	public boolean isReadyForRender() {
+		return super.isReadyForRender() && validForRender && !firstPositionUpdate;
+	}
+
+	@OnlyIn(Dist.CLIENT)
+	private WeakReference<CarriageContraptionInstance> instanceHolder;
+
+	@OnlyIn(Dist.CLIENT)
+	public void bindInstance(CarriageContraptionInstance instance) {
+		this.instanceHolder = new WeakReference<>(instance);
+		updateRenderedPortalCutoff();
+	}
+
+	@OnlyIn(Dist.CLIENT)
+	public void updateRenderedPortalCutoff() {
+		if (carriage == null)
+			return;
+
+		// update portal slice
+		particleSlice.clear();
+		particleAvgY = 0;
+
+		if (contraption instanceof CarriageContraption cc) {
+			Direction forward = cc.getAssemblyDirection()
+				.getClockWise();
+			Axis axis = forward.getAxis();
+			boolean x = axis == Axis.X;
+			boolean flip = true;
+
+			for (BlockPos pos : contraption.getBlocks()
+				.keySet()) {
+				if (!cc.atSeam(pos))
+					continue;
+				int pX = x ? pos.getX() : pos.getZ();
+				pX *= forward.getAxisDirection()
+					.getStep() * (flip ? 1 : -1);
+				pos = new BlockPos(pX, pos.getY(), 0);
+				particleSlice.add(pos);
+				particleAvgY += pos.getY();
+			}
+
+		}
+		if (particleSlice.size() > 0)
+			particleAvgY /= particleSlice.size();
+
+		// update hidden bogeys (if instanced)
+		if (instanceHolder == null)
+			return;
+		CarriageContraptionInstance instance = instanceHolder.get();
+		if (instance == null)
+			return;
+
+		int bogeySpacing = carriage.bogeySpacing;
+
+		carriage.bogeys.forEachWithContext((bogey, first) -> {
+			if (bogey == null)
+				return;
+
+			BlockPos bogeyPos = bogey.isLeading ? BlockPos.ZERO
+				: BlockPos.ZERO.relative(getInitialOrientation().getCounterClockWise(), bogeySpacing);
+			instance.setBogeyVisibility(first, !contraption.isHiddenInPortal(bogeyPos));
+		});
+	}
+
 }

src/main/java/com/simibubi/create/content/logistics/trains/entity/CarriageContraptionEntityRenderer.java

@@ -29,9 +29,7 @@ public class CarriageContraptionEntityRenderer extends ContraptionEntityRenderer
 			for (CarriageBogey bogey : carriage.bogeys)
 				if (bogey != null)
 					bogey.couplingAnchors.replace(v -> null);
-		if (!super.shouldRender(entity, clippingHelper, cameraX, cameraY, cameraZ))
-			return false;
-		return entity.validForRender && !entity.firstPositionUpdate;
+		return super.shouldRender(entity, clippingHelper, cameraX, cameraY, cameraZ);
 	}
 
 	@Override
@@ -53,12 +51,19 @@ public class CarriageContraptionEntityRenderer extends ContraptionEntityRenderer
 			if (bogey == null)
 				return;
 
-			if (!Backend.isOn()) {
+			BlockPos bogeyPos = bogey.isLeading ? BlockPos.ZERO
+				: BlockPos.ZERO.relative(entity.getInitialOrientation()
+					.getCounterClockWise(), bogeySpacing);
+
+			if (!Backend.isOn() && !entity.getContraption()
+				.isHiddenInPortal(bogeyPos)) {
+
 				ms.pushPose();
 				translateBogey(ms, bogey, bogeySpacing, viewYRot, viewXRot, partialTicks);
 
 				int light = getBogeyLightCoords(entity, bogey, partialTicks);
-				bogey.type.render(null, bogey.wheelAngle.getValue(partialTicks), ms, partialTicks, buffers, light, overlay);
+				bogey.type.render(null, bogey.wheelAngle.getValue(partialTicks), ms, partialTicks, buffers, light,
+					overlay);
 
 				ms.popPose();
 			}
@@ -70,25 +75,28 @@ public class CarriageContraptionEntityRenderer extends ContraptionEntityRenderer
 		});
 	}
 
-	public static void translateBogey(PoseStack ms, CarriageBogey bogey, int bogeySpacing, float viewYRot, float viewXRot, float partialTicks) {
+	public static void translateBogey(PoseStack ms, CarriageBogey bogey, int bogeySpacing, float viewYRot,
+		float viewXRot, float partialTicks) {
 		TransformStack.cast(ms)
-				.rotateY(viewYRot + 90)
-				.rotateX(-viewXRot)
-				.rotateY(180)
-				.translate(0, 0, bogey.isLeading ? 0 : -bogeySpacing)
-				.rotateY(-180)
-				.rotateX(viewXRot)
-				.rotateY(-viewYRot - 90)
-				.rotateY(bogey.yaw.getValue(partialTicks))
-				.rotateX(bogey.pitch.getValue(partialTicks))
-				.translate(0, .5f, 0);
+			.rotateY(viewYRot + 90)
+			.rotateX(-viewXRot)
+			.rotateY(180)
+			.translate(0, 0, bogey.isLeading ? 0 : -bogeySpacing)
+			.rotateY(-180)
+			.rotateX(viewXRot)
+			.rotateY(-viewYRot - 90)
+			.rotateY(bogey.yaw.getValue(partialTicks))
+			.rotateX(bogey.pitch.getValue(partialTicks))
+			.translate(0, .5f, 0);
 	}
 
 	public static int getBogeyLightCoords(CarriageContraptionEntity entity, CarriageBogey bogey, float partialTicks) {
 
-		var lightPos = new BlockPos(Objects.requireNonNullElseGet(bogey.getAnchorPosition(), () -> entity.getLightProbePosition(partialTicks)));
+		var lightPos = new BlockPos(
+			Objects.requireNonNullElseGet(bogey.getAnchorPosition(), () -> entity.getLightProbePosition(partialTicks)));
 
-		return LightTexture.pack(entity.level.getBrightness(LightLayer.BLOCK, lightPos), entity.level.getBrightness(LightLayer.SKY, lightPos));
+		return LightTexture.pack(entity.level.getBrightness(LightLayer.BLOCK, lightPos),
+			entity.level.getBrightness(LightLayer.SKY, lightPos));
 	}
 
 }

src/main/java/com/simibubi/create/content/logistics/trains/entity/CarriageContraptionInstance.java

@@ -7,6 +7,7 @@ import com.jozufozu.flywheel.util.AnimationTickHolder;
 import com.jozufozu.flywheel.util.transform.TransformStack;
 import com.mojang.blaze3d.vertex.PoseStack;
 import com.simibubi.create.foundation.utility.Couple;
+import com.simibubi.create.foundation.utility.Iterate;
 
 public class CarriageContraptionInstance extends EntityInstance<CarriageContraptionEntity> implements DynamicInstance {
 
@@ -14,25 +15,34 @@ public class CarriageContraptionInstance extends EntityInstance<CarriageContrapt
 
 	private Carriage carriage;
 	private Couple<BogeyInstance> bogeys;
+	private Couple<Boolean> bogeyHidden;
 
 	public CarriageContraptionInstance(MaterialManager materialManager, CarriageContraptionEntity entity) {
 		super(materialManager, entity);
+		bogeyHidden = Couple.create(() -> false);
+		entity.bindInstance(this);
 	}
 
 	@Override
 	public void init() {
 		carriage = entity.getCarriage();
 
-		if (carriage == null) return;
+		if (carriage == null)
+			return;
 
 		bogeys = carriage.bogeys.mapNotNullWithParam(CarriageBogey::createInstance, materialManager);
 		updateLight();
 	}
 
+	public void setBogeyVisibility(boolean first, boolean visible) {
+		bogeyHidden.set(first, !visible);
+	}
+	
 	@Override
 	public void beginFrame() {
 		if (bogeys == null) {
-			init();
+			if (entity.isReadyForRender())
+				init();
 			return;
 		}
 
@@ -47,18 +57,23 @@ public class CarriageContraptionInstance extends EntityInstance<CarriageContrapt
 		TransformStack.cast(ms)
 			.translate(getInstancePosition(partialTicks));
 
-		for (BogeyInstance instance : bogeys) {
-			if (instance != null) {
-				ms.pushPose();
-				CarriageBogey bogey = instance.bogey;
-
-				CarriageContraptionEntityRenderer.translateBogey(ms, bogey, bogeySpacing, viewYRot, viewXRot,
-					partialTicks);
-				ms.translate(0, -1.5 - 1 / 128f, 0);
-
-				instance.beginFrame(bogey.wheelAngle.getValue(partialTicks), ms);
-				ms.popPose();
+		for (boolean current : Iterate.trueAndFalse) {
+			BogeyInstance instance = bogeys.get(current);
+			if (instance == null) 
+				continue;
+			if (bogeyHidden.get(current)) {
+				instance.hiddenFrame();
+				continue;
 			}
+			
+			ms.pushPose();
+			CarriageBogey bogey = instance.bogey;
+
+			CarriageContraptionEntityRenderer.translateBogey(ms, bogey, bogeySpacing, viewYRot, viewXRot, partialTicks);
+			ms.translate(0, -1.5 - 1 / 128f, 0);
+
+			instance.beginFrame(bogey.wheelAngle.getValue(partialTicks), ms);
+			ms.popPose();
 		}
 
 		ms.popPose();
@@ -66,7 +81,8 @@ public class CarriageContraptionInstance extends EntityInstance<CarriageContrapt
 
 	@Override
 	public void updateLight() {
-		if (bogeys == null) return;
+		if (bogeys == null)
+			return;
 
 		bogeys.forEach(instance -> {
 			if (instance != null)
@@ -76,7 +92,8 @@ public class CarriageContraptionInstance extends EntityInstance<CarriageContrapt
 
 	@Override
 	public void remove() {
-		if (bogeys == null) return;
+		if (bogeys == null)
+			return;
 
 		bogeys.forEach(instance -> {
 			if (instance != null)

src/main/java/com/simibubi/create/content/logistics/trains/entity/CarriageCouplingRenderer.java

@@ -18,6 +18,7 @@ import net.minecraft.client.renderer.RenderType;
 import net.minecraft.core.BlockPos;
 import net.minecraft.util.Mth;
 import net.minecraft.world.entity.Entity;
+import net.minecraft.world.level.Level;
 import net.minecraft.world.level.LightLayer;
 import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.state.BlockState;
@@ -35,14 +36,15 @@ public class CarriageCouplingRenderer {
 			return;
 
 		Vec3 camera = cameraEntity.getPosition(partialTicks);
+		Level level = cameraEntity.level;
 
 		for (Train train : trains) {
 			List<Carriage> carriages = train.carriages;
 			for (int i = 0; i < carriages.size() - 1; i++) {
 				Carriage carriage = carriages.get(i);
-				CarriageContraptionEntity entity = carriage.entity.get();
+				CarriageContraptionEntity entity = carriage.getDimensional(level).entity.get();
 				Carriage carriage2 = carriages.get(i + 1);
-				CarriageContraptionEntity entity2 = carriage.entity.get();
+				CarriageContraptionEntity entity2 = carriage.getDimensional(level).entity.get();
 
 				if (entity == null || entity2 == null)
 					continue;
@@ -51,7 +53,7 @@ public class CarriageCouplingRenderer {
 				CarriageBogey bogey2 = carriage2.leadingBogey();
 				Vec3 anchor = bogey1.couplingAnchors.getSecond();
 				Vec3 anchor2 = bogey2.couplingAnchors.getFirst();
-				
+
 				if (anchor == null || anchor2 == null)
 					continue;
 				if (!anchor.closerThan(camera, 64))

src/main/java/com/simibubi/create/content/logistics/trains/entity/CarriageSyncData.java

@@ -16,6 +16,8 @@ import org.apache.commons.lang3.mutable.MutableBoolean;
 import com.simibubi.create.content.logistics.trains.TrackEdge;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
 import com.simibubi.create.content.logistics.trains.TrackNode;
+import com.simibubi.create.content.logistics.trains.entity.Carriage.DimensionalCarriageEntity;
+import com.simibubi.create.content.logistics.trains.entity.TravellingPoint.ITrackSelector;
 import com.simibubi.create.foundation.utility.Couple;
 import com.simibubi.create.foundation.utility.Iterate;
 import com.simibubi.create.foundation.utility.Pair;
@@ -107,10 +109,12 @@ public class CarriageSyncData {
 	}
 
 	public void update(CarriageContraptionEntity entity, Carriage carriage) {
+		DimensionalCarriageEntity dce = carriage.getDimensional(entity.level);
+
 		TrackGraph graph = carriage.train.graph;
 		if (graph == null) {
-			fallbackLocations = Pair.of(carriage.positionAnchor, carriage.rotationAnchors);
-			carriage.pointsInitialised = true;
+			fallbackLocations = Pair.of(dce.positionAnchor, dce.rotationAnchors);
+			dce.pointsInitialised = true;
 			setDirty(true);
 			return;
 		}
@@ -136,10 +140,12 @@ public class CarriageSyncData {
 	}
 
 	public void apply(CarriageContraptionEntity entity, Carriage carriage) {
+		DimensionalCarriageEntity dce = carriage.getDimensional(entity.level);
+
 		fallbackPointSnapshot = null;
 		if (fallbackLocations != null) {
-			fallbackPointSnapshot = Pair.of(carriage.positionAnchor, carriage.rotationAnchors);
-			carriage.pointsInitialised = true;
+			fallbackPointSnapshot = Pair.of(dce.positionAnchor, dce.rotationAnchors);
+			dce.pointsInitialised = true;
 			return;
 		}
 
@@ -154,7 +160,7 @@ public class CarriageSyncData {
 
 			CarriageBogey bogey = carriage.bogeys.get(i / 2 == 0);
 			TravellingPoint bogeyPoint = bogey.points.get(i % 2 == 0);
-			TravellingPoint point = carriage.pointsInitialised ? pointsToApproach[i] : bogeyPoint;
+			TravellingPoint point = dce.pointsInitialised ? pointsToApproach[i] : bogeyPoint;
 
 			Couple<TrackNode> nodes = pair.getFirst()
 				.map(graph::getNode);
@@ -170,7 +176,7 @@ public class CarriageSyncData {
 			point.edge = edge;
 			point.position = pair.getSecond();
 
-			if (carriage.pointsInitialised) {
+			if (dce.pointsInitialised) {
 				float foundDistance = -1;
 				boolean direction = false;
 				for (boolean forward : Iterate.trueAndFalse) {
@@ -194,9 +200,9 @@ public class CarriageSyncData {
 			}
 		}
 
-		if (!carriage.pointsInitialised) {
+		if (!dce.pointsInitialised) {
 			carriage.train.navigation.distanceToDestination = distanceToDestination;
-			carriage.pointsInitialised = true;
+			dce.pointsInitialised = true;
 			return;
 		}
 
@@ -207,10 +213,12 @@ public class CarriageSyncData {
 	}
 
 	public void approach(CarriageContraptionEntity entity, Carriage carriage, float partial) {
+		DimensionalCarriageEntity dce = carriage.getDimensional(entity.level);
+
 		if (fallbackLocations != null && fallbackPointSnapshot != null) {
-			carriage.positionAnchor = approachVector(partial, carriage.positionAnchor, fallbackLocations.getFirst(),
+			dce.positionAnchor = approachVector(partial, dce.positionAnchor, fallbackLocations.getFirst(),
 				fallbackPointSnapshot.getFirst());
-			carriage.rotationAnchors.replaceWithContext((current, first) -> approachVector(partial, current,
+			dce.rotationAnchors.replaceWithContext((current, first) -> approachVector(partial, current,
 				fallbackLocations.getSecond()
 					.get(first),
 				fallbackPointSnapshot.getSecond()
@@ -238,9 +246,9 @@ public class CarriageSyncData {
 				MutableBoolean success = new MutableBoolean(true);
 				TravellingPoint toApproach = pointsToApproach[index];
 
-				point.travel(graph, partial * f,
-					point.follow(toApproach, b -> success.setValue(success.booleanValue() && b)),
-					point.ignoreEdgePoints(), point.ignoreTurns());
+				ITrackSelector trackSelector =
+					point.follow(toApproach, b -> success.setValue(success.booleanValue() && b));
+				point.travel(graph, partial * f, trackSelector);
 
 				// could not pathfind to server location
 				if (!success.booleanValue()) {

src/main/java/com/simibubi/create/content/logistics/trains/entity/Navigation.java

@@ -19,6 +19,7 @@ import org.apache.commons.lang3.mutable.MutableObject;
 
 import com.jozufozu.flywheel.repack.joml.Math;
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.TrackEdge;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
 import com.simibubi.create.content.logistics.trains.TrackNode;
@@ -37,9 +38,7 @@ import com.simibubi.create.foundation.utility.Iterate;
 import com.simibubi.create.foundation.utility.NBTHelper;
 import com.simibubi.create.foundation.utility.Pair;
 
-import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.NbtUtils;
 import net.minecraft.nbt.Tag;
 import net.minecraft.util.Mth;
 import net.minecraft.world.level.Level;
@@ -368,7 +367,7 @@ public class Navigation {
 				cancelNavigation();
 			return -1;
 		}
-		
+
 		if (Math.abs(distanceToDestination) > 100)
 			announceArrival = true;
 
@@ -460,7 +459,7 @@ public class Navigation {
 				return true;
 			});
 
-			if (!train.doubleEnded || !train.hasBackwardConductor())
+			if (!train.doubleEnded || !train.manualTick && !train.hasBackwardConductor())
 				break;
 		}
 
@@ -621,14 +620,9 @@ public class Navigation {
 
 			List<Entry<TrackNode, TrackEdge>> validTargets = new ArrayList<>();
 			Map<TrackNode, TrackEdge> connectionsFrom = graph.getConnectionsFrom(node2);
-			for (Entry<TrackNode, TrackEdge> connection : connectionsFrom.entrySet()) {
-				TrackEdge newEdge = connection.getValue();
-				Vec3 currentDirection = edge.getDirection(false);
-				Vec3 newDirection = newEdge.getDirection(true);
-				if (currentDirection.dot(newDirection) < 7 / 8f)
-					continue;
-				validTargets.add(connection);
-			}
+			for (Entry<TrackNode, TrackEdge> connection : connectionsFrom.entrySet())
+				if (edge.canTravelTo(connection.getValue()))
+					validTargets.add(connection);
 
 			if (validTargets.isEmpty())
 				continue;
@@ -673,7 +667,7 @@ public class Navigation {
 			Pair<Couple<TrackNode>, TrackEdge> current, GlobalStation station);
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag tag = new CompoundTag();
 		if (destination == null)
 			return tag;
@@ -685,8 +679,7 @@ public class Navigation {
 		tag.put("Path", NBTHelper.writeCompoundList(currentPath, c -> {
 			CompoundTag nbt = new CompoundTag();
 			nbt.put("Nodes", c.map(TrackNode::getLocation)
-				.map(BlockPos::new)
-				.serializeEach(NbtUtils::writeBlockPos));
+				.serializeEach(loc -> loc.write(dimensions)));
 			return nbt;
 		}));
 		if (waitingForSignal == null)
@@ -698,7 +691,7 @@ public class Navigation {
 		return tag;
 	}
 
-	public void read(CompoundTag tag, TrackGraph graph) {
+	public void read(CompoundTag tag, TrackGraph graph, DimensionPalette dimensions) {
 		destination = graph != null && tag.contains("Destination")
 			? graph.getPoint(EdgePointType.STATION, tag.getUUID("Destination"))
 			: null;
@@ -713,8 +706,7 @@ public class Navigation {
 		currentPath.clear();
 		NBTHelper.iterateCompoundList(tag.getList("Path", Tag.TAG_COMPOUND),
 			c -> currentPath.add(Couple
-				.deserializeEach(c.getList("Nodes", Tag.TAG_COMPOUND),
-					c2 -> TrackNodeLocation.fromPackedPos(NbtUtils.readBlockPos(c2)))
+				.deserializeEach(c.getList("Nodes", Tag.TAG_COMPOUND), c2 -> TrackNodeLocation.read(c2, dimensions))
 				.map(graph::locateNode)));
 		waitingForSignal = tag.contains("BlockingSignal")
 			? Pair.of(tag.getUUID("BlockingSignal"), tag.getBoolean("BlockingSignalSide"))

src/main/java/com/simibubi/create/content/logistics/trains/entity/Train.java

@@ -20,10 +20,12 @@ import org.apache.commons.lang3.mutable.MutableBoolean;
 import org.apache.commons.lang3.mutable.MutableObject;
 
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.GraphLocation;
 import com.simibubi.create.content.logistics.trains.TrackEdge;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
 import com.simibubi.create.content.logistics.trains.TrackNode;
+import com.simibubi.create.content.logistics.trains.entity.Carriage.DimensionalCarriageEntity;
 import com.simibubi.create.content.logistics.trains.entity.TravellingPoint.IEdgePointListener;
 import com.simibubi.create.content.logistics.trains.entity.TravellingPoint.ITrackSelector;
 import com.simibubi.create.content.logistics.trains.entity.TravellingPoint.SteerDirection;
@@ -50,6 +52,7 @@ import net.minecraft.core.Direction.Axis;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.Tag;
 import net.minecraft.network.chat.Component;
+import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.util.Mth;
 import net.minecraft.world.entity.LivingEntity;
@@ -72,6 +75,8 @@ public class Train {
 	public Component name;
 	public TrainStatus status;
 
+	public boolean invalid;
+	
 	public SteerDirection manualSteer;
 	public boolean manualTick;
 
@@ -154,7 +159,7 @@ public class Train {
 		Create.RAILWAYS.markTracksDirty();
 
 		if (graph == null) {
-			carriages.forEach(c -> c.manageEntity(level));
+			carriages.forEach(c -> c.manageEntities(level));
 			updateConductors();
 			return;
 		}
@@ -175,9 +180,40 @@ public class Train {
 			Carriage carriage = carriages.get(i);
 			if (previousCarriage != null) {
 				int target = carriageSpacing.get(i - 1);
-				Vec3 leadingAnchor = carriage.leadingAnchor();
-				Vec3 trailingAnchor = previousCarriage.trailingAnchor();
-				double actual = leadingAnchor.distanceTo(trailingAnchor);
+				double actual = target;
+
+				TravellingPoint leadingPoint = carriage.getLeadingPoint();
+				TravellingPoint trailingPoint = previousCarriage.getTrailingPoint();
+
+				int entries = 0;
+				double total = 0;
+
+				if (leadingPoint.node1 != null && trailingPoint.node1 != null) {
+					ResourceKey<Level> d1 = leadingPoint.node1.getLocation().dimension;
+					ResourceKey<Level> d2 = trailingPoint.node1.getLocation().dimension;
+					for (boolean b : Iterate.trueAndFalse) {
+						ResourceKey<Level> d = b ? d1 : d2;
+						if (!b && d1.equals(d2))
+							continue;
+
+						DimensionalCarriageEntity dimensional = carriage.getDimensionalIfPresent(d);
+						DimensionalCarriageEntity dimensional2 = previousCarriage.getDimensionalIfPresent(d);
+						if (dimensional == null || dimensional2 == null)
+							continue;
+
+						Vec3 leadingAnchor = dimensional.leadingAnchor();
+						Vec3 trailingAnchor = dimensional2.trailingAnchor();
+						if (leadingAnchor == null || trailingAnchor == null)
+							continue;
+
+						total += leadingAnchor.distanceTo(trailingAnchor);
+						entries++;
+					}
+				}
+
+				if (entries > 0)
+					actual = total / entries;
+
 				stress[i - 1] = target - actual;
 			}
 			previousCarriage = carriage;
@@ -383,10 +419,19 @@ public class Train {
 		if (derailed)
 			return;
 
-		Vec3 start = (speed < 0 ? carriage.getTrailingPoint() : carriage.getLeadingPoint()).getPosition();
-		Vec3 end = (speed < 0 ? carriage.getLeadingPoint() : carriage.getTrailingPoint()).getPosition();
+		TravellingPoint trailingPoint = carriage.getTrailingPoint();
+		TravellingPoint leadingPoint = carriage.getLeadingPoint();
 
-		Pair<Train, Vec3> collision = findCollidingTrain(level, start, end, this);
+		if (leadingPoint.node1 == null || trailingPoint.node1 == null)
+			return;
+		ResourceKey<Level> dimension = leadingPoint.node1.getLocation().dimension;
+		if (!dimension.equals(trailingPoint.node1.getLocation().dimension))
+			return;
+
+		Vec3 start = (speed < 0 ? trailingPoint : leadingPoint).getPosition();
+		Vec3 end = (speed < 0 ? leadingPoint : trailingPoint).getPosition();
+
+		Pair<Train, Vec3> collision = findCollidingTrain(level, start, end, this, dimension);
 		if (collision == null)
 			return;
 
@@ -402,7 +447,8 @@ public class Train {
 		train.crash();
 	}
 
-	public static Pair<Train, Vec3> findCollidingTrain(Level level, Vec3 start, Vec3 end, Train ignore) {
+	public static Pair<Train, Vec3> findCollidingTrain(Level level, Vec3 start, Vec3 end, Train ignore,
+		ResourceKey<Level> dimension) {
 		for (Train train : Create.RAILWAYS.sided(level).trains.values()) {
 			if (train == ignore)
 				continue;
@@ -419,6 +465,11 @@ public class Train {
 					TravellingPoint otherTrailing = otherCarriage.getTrailingPoint();
 					if (otherLeading.edge == null || otherTrailing.edge == null)
 						continue;
+					ResourceKey<Level> otherDimension = otherLeading.node1.getLocation().dimension;
+					if (!otherDimension.equals(otherTrailing.node1.getLocation().dimension))
+						continue;
+					if (!otherDimension.equals(dimension))
+						continue;
 
 					Vec3 start2 = otherLeading.getPosition();
 					Vec3 end2 = otherTrailing.getPosition();
@@ -486,7 +537,7 @@ public class Train {
 		for (int i = 0; i < carriages.size(); i++) {
 
 			Carriage carriage = carriages.get(backwards ? carriages.size() - i - 1 : i);
-			CarriageContraptionEntity entity = carriage.entity.get();
+			CarriageContraptionEntity entity = carriage.anyAvailableEntity();
 			if (entity == null)
 				return false;
 
@@ -511,7 +562,9 @@ public class Train {
 
 	public boolean canDisassemble() {
 		for (Carriage carriage : carriages) {
-			CarriageContraptionEntity entity = carriage.entity.get();
+			if (carriage.presentInMultipleDimensions())
+				return false;
+			CarriageContraptionEntity entity = carriage.anyAvailableEntity();
 			if (entity == null)
 				return false;
 			if (!Mth.equal(entity.pitch, 0))
@@ -629,11 +682,8 @@ public class Train {
 	}
 
 	public void syncTrackGraphChanges() {
-		for (Carriage carriage : carriages) {
-			CarriageContraptionEntity entity = carriage.entity.get();
-			if (entity != null)
-				entity.setGraph(graph == null ? null : graph.id);
-		}
+		for (Carriage carriage : carriages)
+			carriage.forEachPresentEntity(e -> e.setGraph(graph == null ? null : graph.id));
 	}
 
 	public int getTotalLength() {
@@ -681,7 +731,10 @@ public class Train {
 	public LivingEntity getOwner(Level level) {
 		try {
 			UUID uuid = owner;
-			return uuid == null ? null : level.getPlayerByUUID(uuid);
+			return uuid == null ? null
+				: level.getServer()
+					.getPlayerList()
+					.getPlayer(uuid);
 		} catch (IllegalArgumentException illegalargumentexception) {
 			return null;
 		}
@@ -799,13 +852,13 @@ public class Train {
 		return Penalties.ANY_TRAIN;
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag tag = new CompoundTag();
 		tag.putUUID("Id", id);
 		tag.putUUID("Owner", owner);
 		if (graph != null)
 			tag.putUUID("Graph", graph.id);
-		tag.put("Carriages", NBTHelper.writeCompoundList(carriages, Carriage::write));
+		tag.put("Carriages", NBTHelper.writeCompoundList(carriages, c -> c.write(dimensions)));
 		tag.putIntArray("CarriageSpacing", carriageSpacing);
 		tag.putBoolean("DoubleEnded", doubleEnded);
 		tag.putDouble("Speed", speed);
@@ -830,22 +883,22 @@ public class Train {
 			compoundTag.putUUID("Id", uid);
 			return compoundTag;
 		}));
-		tag.put("MigratingPoints", NBTHelper.writeCompoundList(migratingPoints, TrainMigration::write));
+		tag.put("MigratingPoints", NBTHelper.writeCompoundList(migratingPoints, tm -> tm.write(dimensions)));
 
 		tag.put("Runtime", runtime.write());
-		tag.put("Navigation", navigation.write());
+		tag.put("Navigation", navigation.write(dimensions));
 
 		return tag;
 	}
 
-	public static Train read(CompoundTag tag, Map<UUID, TrackGraph> trackNetworks) {
+	public static Train read(CompoundTag tag, Map<UUID, TrackGraph> trackNetworks, DimensionPalette dimensions) {
 		UUID id = tag.getUUID("Id");
 		UUID owner = tag.getUUID("Owner");
 		UUID graphId = tag.contains("Graph") ? tag.getUUID("Graph") : null;
 		TrackGraph graph = graphId == null ? null : trackNetworks.get(graphId);
 		List<Carriage> carriages = new ArrayList<>();
 		NBTHelper.iterateCompoundList(tag.getList("Carriages", Tag.TAG_COMPOUND),
-			c -> carriages.add(Carriage.read(c, graph)));
+			c -> carriages.add(Carriage.read(c, graph, dimensions)));
 		List<Integer> carriageSpacing = new ArrayList<>();
 		for (int i : tag.getIntArray("CarriageSpacing"))
 			carriageSpacing.add(i);
@@ -868,10 +921,10 @@ public class Train {
 		NBTHelper.iterateCompoundList(tag.getList("ReservedSignalBlocks", Tag.TAG_COMPOUND),
 			c -> train.reservedSignalBlocks.add(c.getUUID("Id")));
 		NBTHelper.iterateCompoundList(tag.getList("MigratingPoints", Tag.TAG_COMPOUND),
-			c -> train.migratingPoints.add(TrainMigration.read(c)));
+			c -> train.migratingPoints.add(TrainMigration.read(c, dimensions)));
 
 		train.runtime.read(tag.getCompound("Runtime"));
-		train.navigation.read(tag.getCompound("Navigation"), graph);
+		train.navigation.read(tag.getCompound("Navigation"), graph, dimensions);
 
 		if (train.getCurrentStation() != null)
 			train.getCurrentStation()

src/main/java/com/simibubi/create/content/logistics/trains/entity/TrainMigration.java

@@ -2,6 +2,7 @@ package com.simibubi.create.content.logistics.trains.entity;
 
 import java.util.Map.Entry;
 
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.GraphLocation;
 import com.simibubi.create.content.logistics.trains.TrackEdge;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
@@ -10,9 +11,7 @@ import com.simibubi.create.content.logistics.trains.TrackNodeLocation;
 import com.simibubi.create.foundation.utility.Couple;
 import com.simibubi.create.foundation.utility.VecHelper;
 
-import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.NbtUtils;
 import net.minecraft.nbt.Tag;
 import net.minecraft.util.Mth;
 import net.minecraft.world.phys.Vec3;
@@ -100,24 +99,22 @@ public class TrainMigration {
 		return null;
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag tag = new CompoundTag();
 		tag.putBoolean("Curve", curve);
 		tag.put("Fallback", VecHelper.writeNBT(fallback));
 		tag.putDouble("Position", positionOnOldEdge);
-		tag.put("Nodes", locations.map(BlockPos::new)
-			.serializeEach(NbtUtils::writeBlockPos));
+		tag.put("Nodes", locations.serializeEach(l -> l.write(dimensions)));
 		return tag;
 	}
 
-	public static TrainMigration read(CompoundTag tag) {
+	public static TrainMigration read(CompoundTag tag, DimensionPalette dimensions) {
 		TrainMigration trainMigration = new TrainMigration();
 		trainMigration.curve = tag.getBoolean("Curve");
 		trainMigration.fallback = VecHelper.readNBT(tag.getList("Fallback", Tag.TAG_DOUBLE));
 		trainMigration.positionOnOldEdge = tag.getDouble("Position");
 		trainMigration.locations =
-			Couple.deserializeEach(tag.getList("Nodes", Tag.TAG_COMPOUND), NbtUtils::readBlockPos)
-				.map(TrackNodeLocation::fromPackedPos);
+			Couple.deserializeEach(tag.getList("Nodes", Tag.TAG_COMPOUND), c -> TrackNodeLocation.read(c, dimensions));
 		return trainMigration;
 	}
 

src/main/java/com/simibubi/create/content/logistics/trains/entity/TrainRelocator.java

@@ -189,14 +189,18 @@ public class TrainRelocator {
 		};
 		ITrackSelector steer = probe.steer(SteerDirection.NONE, track.getUpNormal(level, pos, blockState));
 		MutableBoolean blocked = new MutableBoolean(false);
+		MutableBoolean portal = new MutableBoolean(false);
 
 		MutableInt blockingIndex = new MutableInt(0);
 		train.forEachTravellingPointBackwards((tp, d) -> {
 			if (blocked.booleanValue())
 				return;
-			probe.travel(graph, d, steer, ignoreSignals, ignoreTurns);
+			probe.travel(graph, d, steer, ignoreSignals, ignoreTurns, $ -> {
+				portal.setTrue();
+				return true;
+			});
 			recorder.accept(probe);
-			if (probe.blocked) {
+			if (probe.blocked || portal.booleanValue()) {
 				blocked.setTrue();
 				return;
 			}
@@ -212,7 +216,8 @@ public class TrainRelocator {
 			Vec3 vec1 = recordedVecs.get(i);
 			Vec3 vec2 = recordedVecs.get(i + 1);
 			boolean blocking = i >= blockingIndex.intValue() - 1;
-			boolean collided = !blocked.booleanValue() && Train.findCollidingTrain(level, vec1, vec2, train) != null;
+			boolean collided = !blocked.booleanValue()
+				&& Train.findCollidingTrain(level, vec1, vec2, train, level.dimension()) != null;
 			if (level.isClientSide && simulate)
 				toVisualise.add(vec2);
 			if (collided || blocking)

src/main/java/com/simibubi/create/content/logistics/trains/entity/TrainStatus.java

@@ -70,6 +70,13 @@ public class TrainStatus {
 		track = true;
 	}
 
+	public void doublePortal() {
+		if (track)
+			return;
+		displayInformation("A Carriage cannot enter a portal whilst leaving another.", false);
+		track = true;
+	}
+	
 	public void endOfTrack() {
 		if (track)
 			return;

src/main/java/com/simibubi/create/content/logistics/trains/entity/TravellingPoint.java

@@ -11,10 +11,12 @@ import java.util.function.BiConsumer;
 import java.util.function.BiFunction;
 import java.util.function.BiPredicate;
 import java.util.function.Consumer;
+import java.util.function.Predicate;
 
 import javax.annotation.Nullable;
 
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.GraphLocation;
 import com.simibubi.create.content.logistics.trains.TrackEdge;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
@@ -25,9 +27,7 @@ import com.simibubi.create.content.logistics.trains.management.edgePoint.signal.
 import com.simibubi.create.foundation.utility.Couple;
 import com.simibubi.create.foundation.utility.Pair;
 
-import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.NbtUtils;
 import net.minecraft.nbt.Tag;
 import net.minecraft.util.Mth;
 import net.minecraft.world.phys.Vec3;
@@ -59,6 +59,9 @@ public class TravellingPoint {
 	public static interface ITurnListener extends BiConsumer<Double, TrackEdge> {
 	};
 
+	public static interface IPortalListener extends Predicate<Couple<TrackNodeLocation>> {
+	};
+
 	public TravellingPoint() {}
 
 	public TravellingPoint(TrackNode node1, TrackNode node2, TrackEdge edge, double position) {
@@ -77,6 +80,10 @@ public class TravellingPoint {
 		};
 	}
 
+	public IPortalListener ignorePortals() {
+		return $ -> false;
+	}
+
 	public ITrackSelector random() {
 		return (graph, pair) -> pair.getSecond()
 			.get(Create.RANDOM.nextInt(pair.getSecond()
@@ -176,8 +183,22 @@ public class TravellingPoint {
 		};
 	}
 
+	public double travel(TrackGraph graph, double distance, ITrackSelector trackSelector) {
+		return travel(graph, distance, trackSelector, ignoreEdgePoints());
+	}
+
+	public double travel(TrackGraph graph, double distance, ITrackSelector trackSelector,
+		IEdgePointListener signalListener) {
+		return travel(graph, distance, trackSelector, signalListener, ignoreTurns());
+	}
+
 	public double travel(TrackGraph graph, double distance, ITrackSelector trackSelector,
 		IEdgePointListener signalListener, ITurnListener turnListener) {
+		return travel(graph, distance, trackSelector, signalListener, turnListener, ignorePortals());
+	}
+
+	public double travel(TrackGraph graph, double distance, ITrackSelector trackSelector,
+		IEdgePointListener signalListener, ITurnListener turnListener, IPortalListener portalListener) {
 		blocked = false;
 		double edgeLength = edge.getLength();
 		if (Mth.equal(distance, 0))
@@ -185,7 +206,7 @@ public class TravellingPoint {
 
 		double prevPos = position;
 		double traveled = distance;
-		double currentT = position / edgeLength;
+		double currentT = edgeLength == 0 ? 0 : position / edgeLength;
 		double incrementT = edge.incrementT(currentT, distance);
 		position = incrementT * edgeLength;
 
@@ -222,9 +243,7 @@ public class TravellingPoint {
 						continue;
 
 					TrackEdge newEdge = entry.getValue();
-					Vec3 currentDirection = edge.getDirection(false);
-					Vec3 newDirection = newEdge.getDirection(true);
-					if (currentDirection.dot(newDirection) < 7 / 8f)
+					if (!edge.canTravelTo(newEdge))
 						continue;
 
 					validTargets.add(entry);
@@ -240,6 +259,16 @@ public class TravellingPoint {
 				Entry<TrackNode, TrackEdge> entry = validTargets.size() == 1 ? validTargets.get(0)
 					: trackSelector.apply(graph, Pair.of(true, validTargets));
 
+				if (entry.getValue()
+					.getLength() == 0 && portalListener.test(
+						Couple.create(node2.getLocation(), entry.getKey()
+							.getLocation()))) {
+					traveled -= position - edgeLength;
+					position = edgeLength;
+					blocked = true;
+					break;
+				}
+
 				node1 = node2;
 				node2 = entry.getKey();
 				edge = entry.getValue();
@@ -272,12 +301,9 @@ public class TravellingPoint {
 					TrackNode newNode = entry.getKey();
 					if (newNode == node2)
 						continue;
-
-					TrackEdge newEdge = graph.getConnectionsFrom(newNode)
-						.get(node1);
-					Vec3 currentDirection = edge.getDirection(true);
-					Vec3 newDirection = newEdge.getDirection(false);
-					if (currentDirection.dot(newDirection) < 7 / 8f)
+					if (!graph.getConnectionsFrom(newNode)
+						.get(node1)
+						.canTravelTo(edge))
 						continue;
 
 					validTargets.add(entry);
@@ -293,6 +319,16 @@ public class TravellingPoint {
 				Entry<TrackNode, TrackEdge> entry = validTargets.size() == 1 ? validTargets.get(0)
 					: trackSelector.apply(graph, Pair.of(false, validTargets));
 
+				if (entry.getValue()
+					.getLength() == 0 && portalListener.test(
+						Couple.create(entry.getKey()
+							.getLocation(), node1.getLocation()))) {
+					traveled -= position;
+					position = 0;
+					blocked = true;
+					break;
+				}
+
 				node2 = node1;
 				node1 = entry.getKey();
 				edge = graph.getConnectionsFrom(node1)
@@ -322,9 +358,10 @@ public class TravellingPoint {
 		if (edge.isTurn())
 			turnListener.accept(Math.max(0, totalDistance), edge);
 
-		EdgeData edgeData = edge.getEdgeData();
 		double from = forward ? prevPos : position;
 		double to = forward ? position : prevPos;
+
+		EdgeData edgeData = edge.getEdgeData();
 		List<TrackEdgePoint> edgePoints = edgeData.getPoints();
 
 		double length = edge.getLength();
@@ -353,7 +390,11 @@ public class TravellingPoint {
 	}
 
 	public Vec3 getPosition() {
-		double t = position / edge.getLength();
+		return getPositionWithOffset(0);
+	}
+
+	public Vec3 getPositionWithOffset(double offset) {
+		double t = (position + offset) / edge.getLength();
 		return edge.getPosition(t)
 			.add(edge.getNormal(node1, node2, t)
 				.scale(1));
@@ -369,28 +410,25 @@ public class TravellingPoint {
 			.get(node2);
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag tag = new CompoundTag();
 		Couple<TrackNode> nodes = Couple.create(node1, node2);
 		if (nodes.either(Objects::isNull))
 			return tag;
 		tag.put("Nodes", nodes.map(TrackNode::getLocation)
-			.map(BlockPos::new)
-			.serializeEach(NbtUtils::writeBlockPos));
+			.serializeEach(loc -> loc.write(dimensions)));
 		tag.putDouble("Position", position);
 		return tag;
 	}
 
-	public static TravellingPoint read(CompoundTag tag, TrackGraph graph) {
+	public static TravellingPoint read(CompoundTag tag, TrackGraph graph, DimensionPalette dimensions) {
 		if (graph == null)
 			return new TravellingPoint(null, null, null, 0);
 
-		Couple<TrackNode> locs =
-			tag.contains("Nodes")
-				? Couple.deserializeEach(tag.getList("Nodes", Tag.TAG_COMPOUND), NbtUtils::readBlockPos)
-					.map(TrackNodeLocation::fromPackedPos)
-					.map(graph::locateNode)
-				: Couple.create(null, null);
+		Couple<TrackNode> locs = tag.contains("Nodes")
+			? Couple.deserializeEach(tag.getList("Nodes", Tag.TAG_COMPOUND), c -> TrackNodeLocation.read(c, dimensions))
+				.map(graph::locateNode)
+			: Couple.create(null, null);
 
 		if (locs.either(Objects::isNull))
 			return new TravellingPoint(null, null, null, 0);

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/EdgeData.java

@@ -10,6 +10,7 @@ import javax.annotation.Nullable;
 
 import com.google.common.base.Objects;
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.TrackEdge;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
 import com.simibubi.create.content.logistics.trains.TrackNode;
@@ -177,7 +178,7 @@ public class EdgeData {
 		return null;
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag nbt = new CompoundTag();
 		if (singleSignalGroup == passiveGroup)
 			NBTHelper.putMarker(nbt, "PassiveGroup");
@@ -194,11 +195,11 @@ public class EdgeData {
 				return tag;
 			}));
 		if (hasIntersections())
-			nbt.put("Intersections", NBTHelper.writeCompoundList(intersections, TrackEdgeIntersection::write));
+			nbt.put("Intersections", NBTHelper.writeCompoundList(intersections, tei -> tei.write(dimensions)));
 		return nbt;
 	}
 
-	public static EdgeData read(CompoundTag nbt, TrackEdge edge, TrackGraph graph) {
+	public static EdgeData read(CompoundTag nbt, TrackEdge edge, TrackGraph graph, DimensionPalette dimensions) {
 		EdgeData data = new EdgeData(edge);
 		if (nbt.contains("SignalGroup"))
 			data.singleSignalGroup = nbt.getUUID("SignalGroup");
@@ -216,8 +217,8 @@ public class EdgeData {
 					data.points.add(point);
 			});
 		if (nbt.contains("Intersections"))
-			data.intersections =
-				NBTHelper.readCompoundList(nbt.getList("Intersections", Tag.TAG_COMPOUND), TrackEdgeIntersection::read);
+			data.intersections = NBTHelper.readCompoundList(nbt.getList("Intersections", Tag.TAG_COMPOUND),
+				c -> TrackEdgeIntersection.read(c, dimensions));
 		return data;
 	}
 

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/EdgePointStorage.java

@@ -7,6 +7,7 @@ import java.util.Map.Entry;
 import java.util.UUID;
 
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.signal.TrackEdgePoint;
 import com.simibubi.create.foundation.utility.NBTHelper;
@@ -65,14 +66,14 @@ public class EdgePointStorage {
 		pointsByType.clear();
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag nbt = new CompoundTag();
 		for (Entry<EdgePointType<?>, Map<UUID, TrackEdgePoint>> entry : pointsByType.entrySet()) {
 			EdgePointType<?> type = entry.getKey();
 			ListTag list = NBTHelper.writeCompoundList(entry.getValue()
 				.values(), edgePoint -> {
 					CompoundTag tag = new CompoundTag();
-					edgePoint.write(tag);
+					edgePoint.write(tag, dimensions);
 					return tag;
 				});
 			nbt.put(type.getId()
@@ -81,14 +82,14 @@ public class EdgePointStorage {
 		return nbt;
 	}
 
-	public void read(CompoundTag nbt) {
+	public void read(CompoundTag nbt, DimensionPalette dimensions) {
 		for (EdgePointType<?> type : EdgePointType.TYPES.values()) {
 			ListTag list = nbt.getList(type.getId()
 				.toString(), Tag.TAG_COMPOUND);
 			Map<UUID, TrackEdgePoint> map = getMap(type);
 			NBTHelper.iterateCompoundList(list, tag -> {
 				TrackEdgePoint edgePoint = type.create();
-				edgePoint.read(tag, false);
+				edgePoint.read(tag, false, dimensions);
 				map.put(edgePoint.getId(), edgePoint);
 			});
 		}

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/EdgePointType.java

@@ -5,6 +5,7 @@ import java.util.Map;
 import java.util.function.Supplier;
 
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.signal.SignalBoundary;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.signal.TrackEdgePoint;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.station.GlobalStation;
@@ -44,11 +45,11 @@ public class EdgePointType<T extends TrackEdgePoint> {
 		return id;
 	}
 	
-	public static TrackEdgePoint read(FriendlyByteBuf buffer) {
+	public static TrackEdgePoint read(FriendlyByteBuf buffer, DimensionPalette dimensions) {
 		ResourceLocation type = buffer.readResourceLocation();
 		EdgePointType<?> edgePointType = TYPES.get(type);
 		TrackEdgePoint point = edgePointType.create();
-		point.read(buffer);
+		point.read(buffer, dimensions);
 		return point;
 	}
 

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/TrackEdgeIntersection.java

@@ -2,12 +2,11 @@ package com.simibubi.create.content.logistics.trains.management.edgePoint;
 
 import java.util.UUID;
 
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.TrackNodeLocation;
 import com.simibubi.create.foundation.utility.Couple;
 
-import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.NbtUtils;
 import net.minecraft.nbt.Tag;
 
 public class TrackEdgeIntersection {
@@ -31,18 +30,18 @@ public class TrackEdgeIntersection {
 			|| target1.equals(target.getSecond()) && target2.equals(target.getFirst());
 	}
 
-	public CompoundTag write() {
+	public CompoundTag write(DimensionPalette dimensions) {
 		CompoundTag nbt = new CompoundTag();
 		nbt.putUUID("Id", id);
 		if (groupId != null)
 			nbt.putUUID("GroupId", groupId);
 		nbt.putDouble("Location", location);
 		nbt.putDouble("TargetLocation", targetLocation);
-		nbt.put("TargetEdge", target.serializeEach(loc -> NbtUtils.writeBlockPos(new BlockPos(loc))));
+		nbt.put("TargetEdge", target.serializeEach(loc -> loc.write(dimensions)));
 		return nbt;
 	}
 
-	public static TrackEdgeIntersection read(CompoundTag nbt) {
+	public static TrackEdgeIntersection read(CompoundTag nbt, DimensionPalette dimensions) {
 		TrackEdgeIntersection intersection = new TrackEdgeIntersection();
 		intersection.id = nbt.getUUID("Id");
 		if (nbt.contains("GroupId"))
@@ -50,7 +49,7 @@ public class TrackEdgeIntersection {
 		intersection.location = nbt.getDouble("Location");
 		intersection.targetLocation = nbt.getDouble("TargetLocation");
 		intersection.target = Couple.deserializeEach(nbt.getList("TargetEdge", Tag.TAG_COMPOUND),
-			tag -> TrackNodeLocation.fromPackedPos(NbtUtils.readBlockPos(tag)));
+			tag -> TrackNodeLocation.read(tag, dimensions));
 		return intersection;
 	}
 

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/TrackTargetingBehaviour.java

@@ -8,6 +8,7 @@ import javax.annotation.Nullable;
 import com.jozufozu.flywheel.core.PartialModel;
 import com.mojang.blaze3d.vertex.PoseStack;
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.GraphLocation;
 import com.simibubi.create.content.logistics.trains.ITrackBlock;
 import com.simibubi.create.content.logistics.trains.TrackEdge;
@@ -186,7 +187,7 @@ public class TrackTargetingBehaviour<T extends TrackEdgePoint> extends TileEntit
 		boolean reverseEdge = front || point instanceof SingleTileEdgePoint;
 
 		if (data != null)
-			point.read(data, true);
+			point.read(data, true, DimensionPalette.read(data));
 
 		point.setId(id);
 		point.setLocation(reverseEdge ? loc.edge : loc.edge.swap(), reverseEdge ? loc.position : length - loc.position);

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/TrackTargetingBlockItem.java

@@ -198,6 +198,9 @@ public class TrackTargetingBlockItem extends BlockItem {
 
 		Couple<TrackNode> nodes = location.edge.map(location.graph::locateNode);
 		TrackEdge edge = location.graph.getConnection(nodes);
+		if (edge == null)
+			return;
+		
 		EdgeData edgeData = edge.getEdgeData();
 		double edgePosition = location.position;
 

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/signal/SignalBoundary.java

@@ -8,6 +8,7 @@ import java.util.UUID;
 
 import com.google.common.base.Objects;
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
 import com.simibubi.create.content.logistics.trains.TrackNode;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.EdgePointType;
@@ -237,8 +238,8 @@ public class SignalBoundary extends TrackEdgePoint {
 	}
 
 	@Override
-	public void read(CompoundTag nbt, boolean migration) {
-		super.read(nbt, migration);
+	public void read(CompoundTag nbt, boolean migration, DimensionPalette dimensions) {
+		super.read(nbt, migration, dimensions);
 
 		if (migration)
 			return;
@@ -265,8 +266,8 @@ public class SignalBoundary extends TrackEdgePoint {
 	}
 
 	@Override
-	public void read(FriendlyByteBuf buffer) {
-		super.read(buffer);
+	public void read(FriendlyByteBuf buffer, DimensionPalette dimensions) {
+		super.read(buffer, dimensions);
 		for (int i = 1; i <= 2; i++) {
 			if (buffer.readBoolean())
 				groups.set(i == 1, buffer.readUUID());
@@ -274,8 +275,8 @@ public class SignalBoundary extends TrackEdgePoint {
 	}
 
 	@Override
-	public void write(CompoundTag nbt) {
-		super.write(nbt);
+	public void write(CompoundTag nbt, DimensionPalette dimensions) {
+		super.write(nbt, dimensions);
 		for (int i = 1; i <= 2; i++)
 			if (!blockEntities.get(i == 1)
 				.isEmpty())
@@ -293,8 +294,8 @@ public class SignalBoundary extends TrackEdgePoint {
 	}
 
 	@Override
-	public void write(FriendlyByteBuf buffer) {
-		super.write(buffer);
+	public void write(FriendlyByteBuf buffer, DimensionPalette dimensions) {
+		super.write(buffer, dimensions);
 		for (int i = 1; i <= 2; i++) {
 			boolean hasGroup = groups.get(i == 1) != null;
 			buffer.writeBoolean(hasGroup);

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/signal/SignalPropagator.java

@@ -24,8 +24,6 @@ import com.simibubi.create.foundation.utility.Couple;
 import com.simibubi.create.foundation.utility.Iterate;
 import com.simibubi.create.foundation.utility.Pair;
 
-import net.minecraft.world.phys.Vec3;
-
 public class SignalPropagator {
 
 	public static void onSignalRemoved(TrackGraph graph, SignalBoundary signal) {
@@ -103,7 +101,7 @@ public class SignalPropagator {
 			return true;
 
 		}, false);
-		
+
 		group.resolveColor();
 		sync.edgeGroupCreated(groupId, group.color);
 	}
@@ -180,14 +178,10 @@ public class SignalPropagator {
 					continue;
 
 				// chain signal: check if reachable
-				if (forCollection) {
-					Vec3 currentDirection = graph.getConnectionsFrom(prevNode)
-						.get(currentNode)
-						.getDirection(false);
-					Vec3 newDirection = edge.getDirection(true);
-					if (currentDirection.dot(newDirection) < 3 / 4f)
-						continue;
-				}
+				if (forCollection && !graph.getConnectionsFrom(prevNode)
+					.get(currentNode)
+					.canTravelTo(edge))
+					continue;
 
 				TrackEdge oppositeEdge = graph.getConnectionsFrom(nextNode)
 					.get(currentNode);

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/signal/SingleTileEdgePoint.java

@@ -1,5 +1,7 @@
 package com.simibubi.create.content.logistics.trains.management.edgePoint.signal;
 
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
+
 import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.NbtUtils;
@@ -35,16 +37,16 @@ public abstract class SingleTileEdgePoint extends TrackEdgePoint {
 	}
 
 	@Override
-	public void read(CompoundTag nbt, boolean migration) {
-		super.read(nbt, migration);
+	public void read(CompoundTag nbt, boolean migration, DimensionPalette dimensions) {
+		super.read(nbt, migration, dimensions);
 		if (migration)
 			return;
 		tilePos = NbtUtils.readBlockPos(nbt.getCompound("TilePos"));
 	}
 
 	@Override
-	public void write(CompoundTag nbt) {
-		super.write(nbt);
+	public void write(CompoundTag nbt, DimensionPalette dimensions) {
+		super.write(nbt, dimensions);
 		nbt.put("TilePos", NbtUtils.writeBlockPos(tilePos));
 	}
 

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/signal/TrackEdgePoint.java

@@ -3,6 +3,7 @@ package com.simibubi.create.content.logistics.trains.management.edgePoint.signal
 import java.util.UUID;
 
 import com.simibubi.create.Create;
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.TrackEdge;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
 import com.simibubi.create.content.logistics.trains.TrackNode;
@@ -14,7 +15,6 @@ import com.simibubi.create.foundation.utility.Couple;
 
 import net.minecraft.core.BlockPos;
 import net.minecraft.nbt.CompoundTag;
-import net.minecraft.nbt.NbtUtils;
 import net.minecraft.nbt.Tag;
 import net.minecraft.network.FriendlyByteBuf;
 import net.minecraft.world.level.LevelAccessor;
@@ -56,7 +56,9 @@ public abstract class TrackEdgePoint {
 		if (behaviour == null)
 			return;
 		CompoundTag migrationData = new CompoundTag();
-		write(migrationData);
+		DimensionPalette dimensions = new DimensionPalette();
+		write(migrationData, dimensions);
+		dimensions.write(migrationData);
 		behaviour.invalidateEdgePoint(migrationData);
 	}
 
@@ -84,32 +86,32 @@ public abstract class TrackEdgePoint {
 			.equals(node1.getLocation());
 	}
 
-	public void read(CompoundTag nbt, boolean migration) {
+	public void read(CompoundTag nbt, boolean migration, DimensionPalette dimensions) {
 		if (migration)
 			return;
 
 		id = nbt.getUUID("Id");
 		position = nbt.getDouble("Position");
 		edgeLocation = Couple.deserializeEach(nbt.getList("Edge", Tag.TAG_COMPOUND),
-			tag -> TrackNodeLocation.fromPackedPos(NbtUtils.readBlockPos(tag)));
+			tag -> TrackNodeLocation.read(tag, dimensions));
 	}
 
-	public void read(FriendlyByteBuf buffer) {
+	public void read(FriendlyByteBuf buffer, DimensionPalette dimensions) {
 		id = buffer.readUUID();
-		edgeLocation = Couple.create(() -> TrackNodeLocation.fromPackedPos(buffer.readBlockPos()));
+		edgeLocation = Couple.create(() -> TrackNodeLocation.receive(buffer, dimensions));
 		position = buffer.readDouble();
 	}
 
-	public void write(CompoundTag nbt) {
+	public void write(CompoundTag nbt, DimensionPalette dimensions) {
 		nbt.putUUID("Id", id);
 		nbt.putDouble("Position", position);
-		nbt.put("Edge", edgeLocation.serializeEach(loc -> NbtUtils.writeBlockPos(new BlockPos(loc))));
+		nbt.put("Edge", edgeLocation.serializeEach(loc -> loc.write(dimensions)));
 	}
 
-	public void write(FriendlyByteBuf buffer) {
+	public void write(FriendlyByteBuf buffer, DimensionPalette dimensions) {
 		buffer.writeResourceLocation(type.getId());
 		buffer.writeUUID(id);
-		edgeLocation.forEach(loc -> buffer.writeBlockPos(new BlockPos(loc)));
+		edgeLocation.forEach(loc -> loc.send(buffer, dimensions));
 		buffer.writeDouble(position);
 	}
 

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/station/GlobalStation.java

@@ -4,6 +4,7 @@ import java.lang.ref.WeakReference;
 
 import javax.annotation.Nullable;
 
+import com.simibubi.create.content.logistics.trains.DimensionPalette;
 import com.simibubi.create.content.logistics.trains.TrackNode;
 import com.simibubi.create.content.logistics.trains.entity.Train;
 import com.simibubi.create.content.logistics.trains.management.edgePoint.signal.SingleTileEdgePoint;
@@ -33,16 +34,16 @@ public class GlobalStation extends SingleTileEdgePoint {
 	}
 
 	@Override
-	public void read(CompoundTag nbt, boolean migration) {
-		super.read(nbt, migration);
+	public void read(CompoundTag nbt, boolean migration, DimensionPalette dimensions) {
+		super.read(nbt, migration, dimensions);
 		name = nbt.getString("Name");
 		assembling = nbt.getBoolean("Assembling");
 		nearestTrain = new WeakReference<Train>(null);
 	}
 
 	@Override
-	public void read(FriendlyByteBuf buffer) {
-		super.read(buffer);
+	public void read(FriendlyByteBuf buffer, DimensionPalette dimensions) {
+		super.read(buffer, dimensions);
 		name = buffer.readUtf();
 		assembling = buffer.readBoolean();
 		if (buffer.readBoolean())
@@ -50,15 +51,15 @@ public class GlobalStation extends SingleTileEdgePoint {
 	}
 
 	@Override
-	public void write(CompoundTag nbt) {
-		super.write(nbt);
+	public void write(CompoundTag nbt, DimensionPalette dimensions) {
+		super.write(nbt, dimensions);
 		nbt.putString("Name", name);
 		nbt.putBoolean("Assembling", assembling);
 	}
 
 	@Override
-	public void write(FriendlyByteBuf buffer) {
-		super.write(buffer);
+	public void write(FriendlyByteBuf buffer, DimensionPalette dimensions) {
+		super.write(buffer, dimensions);
 		buffer.writeUtf(name);
 		buffer.writeBoolean(assembling);
 		buffer.writeBoolean(tilePos != null);

src/main/java/com/simibubi/create/content/logistics/trains/management/edgePoint/station/StationTileEntity.java

@@ -22,6 +22,7 @@ import com.simibubi.create.content.logistics.trains.ITrackBlock;
 import com.simibubi.create.content.logistics.trains.TrackEdge;
 import com.simibubi.create.content.logistics.trains.TrackGraph;
 import com.simibubi.create.content.logistics.trains.TrackNode;
+import com.simibubi.create.content.logistics.trains.TrackNodeLocation;
 import com.simibubi.create.content.logistics.trains.TrackNodeLocation.DiscoveredLocation;
 import com.simibubi.create.content.logistics.trains.entity.Carriage;
 import com.simibubi.create.content.logistics.trains.entity.CarriageBogey;
@@ -409,7 +410,7 @@ public class StationTileEntity extends SmartTileEntity {
 		ITrackBlock track = edgePoint.getTrack();
 		BlockPos bogeyOffset = new BlockPos(track.getUpNormal(level, trackPosition, trackState));
 
-		DiscoveredLocation location = null;
+		TrackNodeLocation location = null;
 		Vec3 centre = Vec3.atBottomCenterOf(trackPosition)
 			.add(0, track.getElevationAtCenter(level, trackPosition, trackState), 0);
 		Collection<DiscoveredLocation> ends = track.getConnected(level, trackPosition, trackState, true, null);
@@ -442,9 +443,9 @@ public class StationTileEntity extends SmartTileEntity {
 			if (points.size() == pointOffsets.size())
 				break;
 
-			DiscoveredLocation currentLocation = location;
-			location = new DiscoveredLocation(location.getLocation()
-				.add(directionVec.scale(.5)));
+			TrackNodeLocation currentLocation = location;
+			location = new TrackNodeLocation(location.getLocation()
+				.add(directionVec.scale(.5))).in(location.dimension);
 
 			if (graph == null)
 				graph = Create.RAILWAYS.getGraph(level, currentLocation);

src/main/java/com/simibubi/create/content/logistics/trains/track/StandardBogeyBlock.java

@@ -77,7 +77,7 @@ public class StandardBogeyBlock extends Block implements IBogeyBlock, ITE<Standa
 
 	@Override
 	public boolean allowsSingleBogeyCarriage() {
-		return !large;
+		return true;
 	}
 
 	@Override

src/main/java/com/simibubi/create/content/logistics/trains/track/TrackBlock.java

@@ -1,10 +1,13 @@
 package com.simibubi.create.content.logistics.trains.track;
 
 import static com.simibubi.create.AllShapes.TRACK_ASC;
+import static com.simibubi.create.AllShapes.TRACK_CROSS;
+import static com.simibubi.create.AllShapes.TRACK_CROSS_DIAG;
 import static com.simibubi.create.AllShapes.TRACK_CROSS_DIAG_ORTHO;
 import static com.simibubi.create.AllShapes.TRACK_CROSS_ORTHO_DIAG;
 import static com.simibubi.create.AllShapes.TRACK_DIAG;
 import static com.simibubi.create.AllShapes.TRACK_ORTHO;
+import static com.simibubi.create.AllShapes.TRACK_ORTHO_LONG;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -21,6 +24,8 @@ import com.simibubi.create.AllBlockPartials;
 import com.simibubi.create.AllBlocks;
 import com.simibubi.create.AllShapes;
 import com.simibubi.create.AllTileEntities;
+import com.simibubi.create.content.contraptions.components.structureMovement.glue.SuperGlueEntity;
+import com.simibubi.create.content.contraptions.particle.CubeParticleData;
 import com.simibubi.create.content.contraptions.wrench.IWrenchable;
 import com.simibubi.create.content.curiosities.girder.GirderBlock;
 import com.simibubi.create.content.logistics.trains.BezierConnection;
@@ -33,7 +38,9 @@ import com.simibubi.create.content.logistics.trains.management.edgePoint.station
 import com.simibubi.create.foundation.block.render.DestroyProgressRenderingHandler;
 import com.simibubi.create.foundation.block.render.ReducedDestroyEffects;
 import com.simibubi.create.foundation.utility.AngleHelper;
+import com.simibubi.create.foundation.utility.BlockFace;
 import com.simibubi.create.foundation.utility.Iterate;
+import com.simibubi.create.foundation.utility.Pair;
 import com.simibubi.create.foundation.utility.VecHelper;
 
 import net.minecraft.client.multiplayer.ClientLevel;
@@ -42,6 +49,8 @@ import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction;
 import net.minecraft.core.Direction.Axis;
 import net.minecraft.core.Direction.AxisDirection;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.util.Mth;
 import net.minecraft.world.InteractionHand;
@@ -51,10 +60,13 @@ import net.minecraft.world.item.context.BlockPlaceContext;
 import net.minecraft.world.item.context.UseOnContext;
 import net.minecraft.world.level.BlockGetter;
 import net.minecraft.world.level.Level;
+import net.minecraft.world.level.LevelAccessor;
 import net.minecraft.world.level.LevelReader;
 import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.EntityBlock;
 import net.minecraft.world.level.block.Mirror;
+import net.minecraft.world.level.block.NetherPortalBlock;
 import net.minecraft.world.level.block.Rotation;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.state.BlockState;
@@ -64,6 +76,9 @@ import net.minecraft.world.level.block.state.properties.BooleanProperty;
 import net.minecraft.world.level.block.state.properties.EnumProperty;
 import net.minecraft.world.level.levelgen.structure.BoundingBox;
 import net.minecraft.world.level.material.PushReaction;
+import net.minecraft.world.level.portal.PortalForcer;
+import net.minecraft.world.level.portal.PortalInfo;
+import net.minecraft.world.phys.AABB;
 import net.minecraft.world.phys.BlockHitResult;
 import net.minecraft.world.phys.Vec3;
 import net.minecraft.world.phys.shapes.CollisionContext;
@@ -77,17 +92,17 @@ import net.minecraftforge.client.IBlockRenderProperties;
 public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrackBlock {
 
 	public static final EnumProperty<TrackShape> SHAPE = EnumProperty.create("shape", TrackShape.class);
-	public static final BooleanProperty HAS_TURN = BooleanProperty.create("turn");
+	public static final BooleanProperty HAS_TE = BooleanProperty.create("turn");
 
 	public TrackBlock(Properties p_49795_) {
 		super(p_49795_);
 		registerDefaultState(defaultBlockState().setValue(SHAPE, TrackShape.ZO)
-			.setValue(HAS_TURN, false));
+			.setValue(HAS_TE, false));
 	}
 
 	@Override
 	protected void createBlockStateDefinition(Builder<Block, BlockState> p_49915_) {
-		super.createBlockStateDefinition(p_49915_.add(SHAPE, HAS_TURN));
+		super.createBlockStateDefinition(p_49915_.add(SHAPE, HAS_TE));
 	}
 
 	@OnlyIn(Dist.CLIENT)
@@ -113,7 +128,7 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 		TrackShape best = TrackShape.ZO;
 		double bestValue = Float.MAX_VALUE;
 		for (TrackShape shape : TrackShape.values()) {
-			if (shape.isJunction())
+			if (shape.isJunction() || shape.isPortal())
 				continue;
 			Vec3 axis = shape.getAxes()
 				.get(0);
@@ -153,7 +168,7 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 
 	@Override
 	public void onPlace(BlockState pState, Level pLevel, BlockPos pPos, BlockState pOldState, boolean pIsMoving) {
-		if (pOldState.getBlock() == this && pState.setValue(HAS_TURN, true) == pOldState.setValue(HAS_TURN, true))
+		if (pOldState.getBlock() == this && pState.setValue(HAS_TE, true) == pOldState.setValue(HAS_TE, true))
 			return;
 		if (pLevel.isClientSide)
 			return;
@@ -164,14 +179,119 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 	}
 
 	@Override
-	public void tick(BlockState p_60462_, ServerLevel p_60463_, BlockPos p_60464_, Random p_60465_) {
-		TrackPropagator.onRailAdded(p_60463_, p_60464_, p_60462_);
+	public void tick(BlockState state, ServerLevel level, BlockPos pos, Random p_60465_) {
+		TrackPropagator.onRailAdded(level, pos, state);
+		if (!state.getValue(SHAPE)
+			.isPortal())
+			connectToNether(level, pos, state);
+	}
+
+	protected void connectToNether(ServerLevel level, BlockPos pos, BlockState state) {
+		TrackShape shape = state.getValue(TrackBlock.SHAPE);
+		Axis portalTest = shape == TrackShape.XO ? Axis.X : shape == TrackShape.ZO ? Axis.Z : null;
+		if (portalTest == null)
+			return;
+
+		boolean pop = false;
+
+		for (Direction d : Iterate.directionsInAxis(portalTest)) {
+			BlockPos portalPos = pos.relative(d);
+			BlockState portalState = level.getBlockState(portalPos);
+			if (!(portalState.getBlock() instanceof NetherPortalBlock))
+				continue;
+
+			pop = true;
+			Pair<ServerLevel, BlockFace> otherSide = getOtherSide(level, new BlockFace(pos, d));
+			if (otherSide == null)
+				continue;
+
+			ServerLevel otherLevel = otherSide.getFirst();
+			BlockFace otherTrack = otherSide.getSecond();
+			BlockPos otherTrackPos = otherTrack.getPos();
+			BlockState existing = otherLevel.getBlockState(otherTrackPos);
+			if (!existing.getMaterial()
+				.isReplaceable())
+				continue;
+
+			level.setBlock(pos, state.setValue(SHAPE, TrackShape.asPortal(d))
+				.setValue(HAS_TE, true), 3);
+			BlockEntity te = level.getBlockEntity(pos);
+			if (te instanceof TrackTileEntity tte)
+				tte.bind(otherLevel.dimension(), otherTrackPos);
+
+			otherLevel.setBlock(otherTrackPos, state.setValue(SHAPE, TrackShape.asPortal(otherTrack.getFace()))
+				.setValue(HAS_TE, true), 3);
+			BlockEntity otherTe = otherLevel.getBlockEntity(otherTrackPos);
+			if (otherTe instanceof TrackTileEntity tte)
+				tte.bind(level.dimension(), pos);
+
+			pop = false;
+		}
+
+		if (pop)
+			level.destroyBlock(pos, true);
+	}
+
+	protected Pair<ServerLevel, BlockFace> getOtherSide(ServerLevel level, BlockFace inboundTrack) {
+		BlockPos portalPos = inboundTrack.getConnectedPos();
+		BlockState portalState = level.getBlockState(portalPos);
+		if (!(portalState.getBlock() instanceof NetherPortalBlock))
+			return null;
+
+		MinecraftServer minecraftserver = level.getServer();
+		ResourceKey<Level> resourcekey = level.dimension() == Level.NETHER ? Level.OVERWORLD : Level.NETHER;
+		ServerLevel otherLevel = minecraftserver.getLevel(resourcekey);
+		if (otherLevel == null || !minecraftserver.isNetherEnabled())
+			return null;
+
+		PortalForcer teleporter = otherLevel.getPortalForcer();
+		SuperGlueEntity probe = new SuperGlueEntity(level, new AABB(portalPos));
+		probe.setYRot(inboundTrack.getFace()
+			.toYRot());
+		PortalInfo portalinfo = teleporter.getPortalInfo(probe, otherLevel, probe::findDimensionEntryPoint);
+		if (portalinfo == null)
+			return null;
+
+		BlockPos otherPortalPos = new BlockPos(portalinfo.pos);
+		BlockState otherPortalState = otherLevel.getBlockState(otherPortalPos);
+		if (!(otherPortalState.getBlock() instanceof NetherPortalBlock))
+			return null;
+
+		Direction targetDirection = inboundTrack.getFace();
+		if (targetDirection.getAxis() == otherPortalState.getValue(NetherPortalBlock.AXIS))
+			targetDirection = targetDirection.getClockWise();
+		BlockPos otherPos = otherPortalPos.relative(targetDirection);
+		return Pair.of(otherLevel, new BlockFace(otherPos, targetDirection.getOpposite()));
 	}
 
 	@Override
-	public Collection<DiscoveredLocation> getConnected(BlockGetter world, BlockPos pos, BlockState state,
+	public BlockState updateShape(BlockState state, Direction pDirection, BlockState pNeighborState,
+		LevelAccessor level, BlockPos pCurrentPos, BlockPos pNeighborPos) {
+		TrackShape shape = state.getValue(SHAPE);
+		if (!shape.isPortal())
+			return state;
+
+		for (Direction d : Iterate.horizontalDirections) {
+			if (TrackShape.asPortal(d) != state.getValue(SHAPE))
+				continue;
+			if (pDirection != d)
+				continue;
+
+			BlockPos portalPos = pCurrentPos.relative(d);
+			BlockState portalState = level.getBlockState(portalPos);
+			if (!(portalState.getBlock() instanceof NetherPortalBlock))
+				return Blocks.AIR.defaultBlockState();
+		}
+
+		return state;
+	}
+
+	@Override
+	public Collection<DiscoveredLocation> getConnected(BlockGetter worldIn, BlockPos pos, BlockState state,
 		boolean linear, TrackNodeLocation connectedTo) {
 		Collection<DiscoveredLocation> list;
+		BlockGetter world = connectedTo != null && worldIn instanceof ServerLevel sl ? sl.getServer()
+			.getLevel(connectedTo.dimension) : worldIn;
 
 		if (getTrackAxes(world, pos, state).size() > 1) {
 			Vec3 center = Vec3.atBottomCenterOf(pos)
@@ -183,11 +303,12 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 					ITrackBlock.addToListIfConnected(connectedTo, list,
 						(d, b) -> axis.scale(b ? 0 : fromCenter ? -d : d)
 							.add(center),
-						b -> shape.getNormal(), axis, null);
+						b -> shape.getNormal(), b -> world instanceof Level l ? l.dimension() : Level.OVERWORLD, axis,
+						null);
 		} else
 			list = ITrackBlock.super.getConnected(world, pos, state, linear, connectedTo);
 
-		if (!state.getValue(HAS_TURN))
+		if (!state.getValue(HAS_TE))
 			return list;
 		if (linear)
 			return list;
@@ -198,22 +319,62 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 
 		Map<BlockPos, BezierConnection> connections = trackTE.getConnections();
 		connections.forEach((connectedPos, bc) -> ITrackBlock.addToListIfConnected(connectedTo, list,
-			(d, b) -> d == 1 ? Vec3.atLowerCornerOf(bc.tePositions.get(b)) : bc.starts.get(b), bc.normals::get, null,
-			bc));
+			(d, b) -> d == 1 ? Vec3.atLowerCornerOf(bc.tePositions.get(b)) : bc.starts.get(b), bc.normals::get,
+			b -> world instanceof Level l ? l.dimension() : Level.OVERWORLD, null, bc));
+
+		if (trackTE.boundLocation == null || !(world instanceof ServerLevel level))
+			return list;
+
+		ResourceKey<Level> otherDim = trackTE.boundLocation.getFirst();
+		ServerLevel otherLevel = level.getServer()
+			.getLevel(otherDim);
+		if (otherLevel == null)
+			return list;
+		BlockPos boundPos = trackTE.boundLocation.getSecond();
+		BlockState boundState = otherLevel.getBlockState(boundPos);
+		if (!AllBlocks.TRACK.has(boundState))
+			return list;
+
+		Vec3 center = Vec3.atBottomCenterOf(pos)
+			.add(0, getElevationAtCenter(world, pos, state), 0);
+		Vec3 boundCenter = Vec3.atBottomCenterOf(boundPos)
+			.add(0, getElevationAtCenter(otherLevel, boundPos, boundState), 0);
+		TrackShape shape = state.getValue(TrackBlock.SHAPE);
+		TrackShape boundShape = boundState.getValue(TrackBlock.SHAPE);
+		Vec3 boundAxis = getTrackAxes(otherLevel, boundPos, boundState).get(0);
+
+		getTrackAxes(world, pos, state).forEach(axis -> {
+			ITrackBlock.addToListIfConnected(connectedTo, list, (d, b) -> (b ? axis : boundAxis).scale(d)
+				.add(b ? center : boundCenter), b -> (b ? shape : boundShape).getNormal(),
+				b -> b ? level.dimension() : otherLevel.dimension(), axis, null);
+		});
+
 		return list;
 	}
 
+	public void animateTick(BlockState pState, Level pLevel, BlockPos pPos, Random pRand) {
+		if (!pState.getValue(SHAPE)
+			.isPortal())
+			return;
+		Vec3 v = Vec3.atLowerCornerOf(pPos)
+			.subtract(.125f, 0, .125f);
+		CubeParticleData data =
+			new CubeParticleData(1, pRand.nextFloat(), 1, .0125f + .0625f * pRand.nextFloat(), 30, false);
+		pLevel.addParticle(data, v.x + pRand.nextFloat() * 1.5f, v.y + .25f, v.z + pRand.nextFloat() * 1.5f, 0.0D,
+			0.04D, 0.0D);
+	}
+
 	@Override
 	public void onRemove(BlockState pState, Level pLevel, BlockPos pPos, BlockState pNewState, boolean pIsMoving) {
 		boolean removeTE = false;
-		if (pState.getValue(HAS_TURN) && (!pState.is(pNewState.getBlock()) || !pNewState.getValue(HAS_TURN))) {
+		if (pState.getValue(HAS_TE) && (!pState.is(pNewState.getBlock()) || !pNewState.getValue(HAS_TE))) {
 			BlockEntity blockEntity = pLevel.getBlockEntity(pPos);
 			if (blockEntity instanceof TrackTileEntity && !pLevel.isClientSide)
 				((TrackTileEntity) blockEntity).removeInboundConnections();
 			removeTE = true;
 		}
 
-		if (pNewState.getBlock() != this || pState.setValue(HAS_TURN, true) != pNewState.setValue(HAS_TURN, true))
+		if (pNewState.getBlock() != this || pState.setValue(HAS_TE, true) != pNewState.setValue(HAS_TE, true))
 			TrackPropagator.onRailRemoved(pLevel, pPos, pState);
 		if (removeTE)
 			pLevel.removeBlockEntity(pPos);
@@ -282,13 +443,13 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 		case AS:
 			return TRACK_ASC.get(Direction.SOUTH);
 		case CR_D:
-			return AllShapes.TRACK_CROSS_DIAG;
+			return TRACK_CROSS_DIAG;
 		case CR_NDX:
 			return TRACK_CROSS_ORTHO_DIAG.get(Direction.SOUTH);
 		case CR_NDZ:
 			return TRACK_CROSS_DIAG_ORTHO.get(Direction.SOUTH);
 		case CR_O:
-			return AllShapes.TRACK_CROSS;
+			return TRACK_CROSS;
 		case CR_PDX:
 			return TRACK_CROSS_DIAG_ORTHO.get(Direction.EAST);
 		case CR_PDZ:
@@ -301,6 +462,14 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 			return TRACK_ORTHO.get(Direction.EAST);
 		case ZO:
 			return TRACK_ORTHO.get(Direction.SOUTH);
+		case TE:
+			return TRACK_ORTHO_LONG.get(Direction.EAST);
+		case TW:
+			return TRACK_ORTHO_LONG.get(Direction.WEST);
+		case TS:
+			return TRACK_ORTHO_LONG.get(Direction.SOUTH);
+		case TN:
+			return TRACK_ORTHO_LONG.get(Direction.NORTH);
 		case NONE:
 		default:
 		}
@@ -320,7 +489,7 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 
 	@Override
 	public BlockEntity newBlockEntity(BlockPos p_153215_, BlockState state) {
-		if (!state.getValue(HAS_TURN))
+		if (!state.getValue(HAS_TE))
 			return null;
 		return AllTileEntities.TRACK.create(p_153215_, state);
 	}
@@ -354,7 +523,7 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 	public InteractionResult onSneakWrenched(BlockState state, UseOnContext context) {
 		Player player = context.getPlayer();
 		Level level = context.getLevel();
-		if (!level.isClientSide && !player.isCreative() && state.getValue(HAS_TURN)) {
+		if (!level.isClientSide && !player.isCreative() && state.getValue(HAS_TE)) {
 			BlockEntity blockEntity = level.getBlockEntity(context.getClickedPos());
 			if (blockEntity instanceof TrackTileEntity trackTE) {
 				trackTE.cancelDrops = true;
@@ -489,7 +658,7 @@ public class TrackBlock extends Block implements EntityBlock, IWrenchable, ITrac
 	@Override
 	public boolean trackEquals(BlockState state1, BlockState state2) {
 		return state1.getBlock() == this && state2.getBlock() == this
-			&& state1.setValue(HAS_TURN, false) == state2.setValue(HAS_TURN, false);
+			&& state1.setValue(HAS_TE, false) == state2.setValue(HAS_TE, false);
 	}
 
 	public static class RenderProperties extends ReducedDestroyEffects implements DestroyProgressRenderingHandler {

src/main/java/com/simibubi/create/content/logistics/trains/track/TrackBlockOutline.java

@@ -13,6 +13,7 @@ import com.simibubi.create.AllShapes;
 import com.simibubi.create.content.logistics.trains.BezierConnection;
 import com.simibubi.create.foundation.utility.AngleHelper;
 import com.simibubi.create.foundation.utility.AnimationTickHolder;
+import com.simibubi.create.foundation.utility.Iterate;
 import com.simibubi.create.foundation.utility.RaycastHelper;
 import com.simibubi.create.foundation.utility.VecHelper;
 import com.simibubi.create.foundation.utility.WorldAttached;
@@ -237,6 +238,7 @@ public class TrackBlockOutline {
 	private static final VoxelShape LONG_CROSS =
 		Shapes.or(TrackVoxelShapes.longOrthogonalZ(), TrackVoxelShapes.longOrthogonalX());
 	private static final VoxelShape LONG_ORTHO = TrackVoxelShapes.longOrthogonalZ();
+	private static final VoxelShape LONG_ORTHO_OFFSET = TrackVoxelShapes.longOrthogonalZOffset();
 
 	private static void walkShapes(TrackShape shape, TransformStack msr, Consumer<VoxelShape> renderer) {
 		float angle45 = Mth.PI / 4;
@@ -246,6 +248,16 @@ public class TrackBlockOutline {
 		else if (shape == TrackShape.ZO || shape == TrackShape.CR_NDZ || shape == TrackShape.CR_PDZ)
 			renderer.accept(AllShapes.TRACK_ORTHO.get(Direction.SOUTH));
 
+		if (shape.isPortal()) {
+			for (Direction d : Iterate.horizontalDirections) {
+				if (TrackShape.asPortal(d) != shape)
+					continue;
+				msr.rotateCentered(Direction.UP, AngleHelper.rad(AngleHelper.horizontalAngle(d)));
+				renderer.accept(LONG_ORTHO_OFFSET);
+				return;
+			}
+		}
+
 		if (shape == TrackShape.PD || shape == TrackShape.CR_PDX || shape == TrackShape.CR_PDZ) {
 			msr.rotateCentered(Direction.UP, angle45);
 			renderer.accept(LONG_ORTHO);

src/main/java/com/simibubi/create/content/logistics/trains/track/TrackPlacement.java

@@ -144,7 +144,7 @@ public class TrackPlacement {
 		if (pos1.distSqr(pos2) > 32 * 32)
 			return info.withMessage("too_far")
 				.tooJumbly();
-		if (!state1.hasProperty(TrackBlock.HAS_TURN))
+		if (!state1.hasProperty(TrackBlock.HAS_TE))
 			return info.withMessage("original_missing");
 
 		if (axis1.dot(end2.subtract(end1)) < 0) {
@@ -469,8 +469,19 @@ public class TrackPlacement {
 			Vec3 axis = first ? info.axis1 : info.axis2;
 			BlockPos pos = first ? info.pos1 : info.pos2;
 			BlockState state = first ? state1 : state2;
-			if (state.hasProperty(TrackBlock.HAS_TURN) && !simulate)
-				state = state.setValue(TrackBlock.HAS_TURN, false);
+			if (state.hasProperty(TrackBlock.HAS_TE) && !simulate)
+				state = state.setValue(TrackBlock.HAS_TE, false);
+
+			switch (state.getValue(TrackBlock.SHAPE)) {
+			case TE, TW:
+				state = state.setValue(TrackBlock.SHAPE, TrackShape.XO);
+				break;
+			case TN, TS:
+				state = state.setValue(TrackBlock.SHAPE, TrackShape.ZO);
+				break;
+			default:
+				break;
+			}
 
 			for (int i = 0; i < (info.curve != null ? extent + 1 : extent); i++) {
 				Vec3 offset = axis.scale(i);
@@ -501,12 +512,12 @@ public class TrackPlacement {
 		if (!simulate) {
 			BlockState stateAtPos = level.getBlockState(targetPos1);
 			level.setBlock(targetPos1,
-				(stateAtPos.getBlock() == state1.getBlock() ? stateAtPos : state1).setValue(TrackBlock.HAS_TURN, true),
+				(stateAtPos.getBlock() == state1.getBlock() ? stateAtPos : state1).setValue(TrackBlock.HAS_TE, true),
 				3);
 
 			stateAtPos = level.getBlockState(targetPos2);
 			level.setBlock(targetPos2,
-				(stateAtPos.getBlock() == state2.getBlock() ? stateAtPos : state2).setValue(TrackBlock.HAS_TURN, true),
+				(stateAtPos.getBlock() == state2.getBlock() ? stateAtPos : state2).setValue(TrackBlock.HAS_TE, true),
 				3);
 		}
 

src/main/java/com/simibubi/create/content/logistics/trains/track/TrackShape.java

@@ -7,6 +7,7 @@ import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.simibubi.create.foundation.utility.Lang;
 
+import net.minecraft.core.Direction;
 import net.minecraft.util.StringRepresentable;
 import net.minecraft.world.level.block.Mirror;
 import net.minecraft.world.level.block.Rotation;
@@ -23,6 +24,11 @@ public enum TrackShape implements StringRepresentable {
 	AE("ascending", 270, new Vec3(1, 1, 0), new Vec3(-1, 1, 0)),
 	AW("ascending", 90, new Vec3(-1, 1, 0), new Vec3(1, 1, 0)),
 
+	TN("teleport", 180, new Vec3(0, 0, -1), new Vec3(0, 1, 0)),
+	TS("teleport", 0, new Vec3(0, 0, 1), new Vec3(0, 1, 0)),
+	TE("teleport", 270, new Vec3(1, 0, 0), new Vec3(0, 1, 0)),
+	TW("teleport", 90, new Vec3(-1, 0, 0), new Vec3(0, 1, 0)),
+
 	CR_O("cross_ortho", new Vec3(0, 0, 1), new Vec3(1, 0, 0)),
 	CR_D("cross_diag", new Vec3(1, 0, 1), new Vec3(-1, 0, 1)),
 	CR_PDX("cross_d1_xo", new Vec3(1, 0, 0), new Vec3(1, 0, 1)),
@@ -60,7 +66,7 @@ public enum TrackShape implements StringRepresentable {
 			.put(CR_PDZ, CR_NDZ)
 			.put(CR_NDZ, CR_PDZ)
 			.build());
-		
+
 		clockwise.putAll(ImmutableMap.<TrackShape, TrackShape>builder()
 			.put(PD, ND)
 			.put(ND, PD)
@@ -112,6 +118,29 @@ public enum TrackShape implements StringRepresentable {
 		return axes.size() > 1;
 	}
 
+	public boolean isPortal() {
+		switch (this) {
+		case TE, TN, TS, TW:
+			return true;
+		default:
+			return false;
+		}
+	}
+
+	public static TrackShape asPortal(Direction horizontalFacing) {
+		switch (horizontalFacing) {
+		case EAST:
+			return TE;
+		case NORTH:
+			return TN;
+		case SOUTH:
+			return TS;
+		case WEST:
+		default:
+			return TW;
+		}
+	}
+
 	public Vec3 getNormal() {
 		return normal;
 	}

src/main/java/com/simibubi/create/content/logistics/trains/track/TrackTileEntity.java

@@ -8,6 +8,7 @@ import java.util.Map.Entry;
 import java.util.Set;
 
 import com.jozufozu.flywheel.backend.instancing.InstancedRenderDispatcher;
+import com.simibubi.create.AllBlocks;
 import com.simibubi.create.content.contraptions.components.structureMovement.ITransformableTE;
 import com.simibubi.create.content.contraptions.components.structureMovement.StructureTransform;
 import com.simibubi.create.content.logistics.trains.BezierConnection;
@@ -17,12 +18,19 @@ import com.simibubi.create.foundation.tileEntity.IMergeableTE;
 import com.simibubi.create.foundation.tileEntity.RemoveTileEntityPacket;
 import com.simibubi.create.foundation.tileEntity.SmartTileEntity;
 import com.simibubi.create.foundation.tileEntity.TileEntityBehaviour;
+import com.simibubi.create.foundation.utility.Pair;
 
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.Direction.Axis;
+import net.minecraft.core.Registry;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.ListTag;
+import net.minecraft.nbt.NbtUtils;
 import net.minecraft.nbt.Tag;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.entity.BlockEntityType;
 import net.minecraft.world.level.block.state.BlockState;
@@ -38,6 +46,8 @@ public class TrackTileEntity extends SmartTileEntity implements ITransformableTE
 	boolean connectionsValidated;
 	boolean cancelDrops;
 
+	public Pair<ResourceKey<Level>, BlockPos> boundLocation;
+
 	public TrackTileEntity(BlockEntityType<?> type, BlockPos pos, BlockState state) {
 		super(type, pos, state);
 		connections = new HashMap<>();
@@ -84,12 +94,14 @@ public class TrackTileEntity extends SmartTileEntity implements ITransformableTE
 	public void removeConnection(BlockPos target) {
 		connections.remove(target);
 		notifyUpdate();
-		if (!connections.isEmpty())
+		if (!connections.isEmpty() || getBlockState().getOptionalValue(TrackBlock.SHAPE)
+			.orElse(TrackShape.NONE)
+			.isPortal())
 			return;
 
 		BlockState blockState = level.getBlockState(worldPosition);
-		if (blockState.hasProperty(TrackBlock.HAS_TURN))
-			level.setBlockAndUpdate(worldPosition, blockState.setValue(TrackBlock.HAS_TURN, false));
+		if (blockState.hasProperty(TrackBlock.HAS_TE))
+			level.setBlockAndUpdate(worldPosition, blockState.setValue(TrackBlock.HAS_TE, false));
 		AllPackets.channel.send(packetTarget(), new RemoveTileEntityPacket(worldPosition));
 	}
 
@@ -108,6 +120,11 @@ public class TrackTileEntity extends SmartTileEntity implements ITransformableTE
 		AllPackets.channel.send(packetTarget(), new RemoveTileEntityPacket(worldPosition));
 	}
 
+	public void bind(ResourceKey<Level> boundDimension, BlockPos boundLocation) {
+		this.boundLocation = Pair.of(boundDimension, boundLocation);
+		setChanged();
+	}
+
 	@Override
 	protected void write(CompoundTag tag, boolean clientPacket) {
 		super.write(tag, clientPacket);
@@ -115,6 +132,13 @@ public class TrackTileEntity extends SmartTileEntity implements ITransformableTE
 		for (BezierConnection bezierConnection : connections.values())
 			listTag.add(bezierConnection.write(worldPosition));
 		tag.put("Connections", listTag);
+
+		if (boundLocation != null) {
+			tag.put("BoundLocation", NbtUtils.writeBlockPos(boundLocation.getSecond()));
+			tag.putString("BoundDimension", boundLocation.getFirst()
+				.location()
+				.toString());
+		}
 	}
 
 	@Override
@@ -134,6 +158,11 @@ public class TrackTileEntity extends SmartTileEntity implements ITransformableTE
 			registerToCurveInteraction();
 		else
 			removeFromCurveInteraction();
+
+		if (tag.contains("BoundLocation"))
+			boundLocation = Pair.of(
+				ResourceKey.create(Registry.DIMENSION_REGISTRY, new ResourceLocation(tag.getString("BoundDimension"))),
+				NbtUtils.readBlockPos(tag.getCompound("BoundLocation")));
 	}
 
 	@Override
@@ -204,6 +233,20 @@ public class TrackTileEntity extends SmartTileEntity implements ITransformableTE
 			removeFromCurveInteraction();
 	}
 
+	@Override
+	protected void setRemovedNotDueToChunkUnload() {
+		super.setRemovedNotDueToChunkUnload();
+
+		if (boundLocation != null && level instanceof ServerLevel) {
+			ServerLevel otherLevel = level.getServer()
+				.getLevel(boundLocation.getFirst());
+			if (otherLevel == null)
+				return;
+			if (AllBlocks.TRACK.has(otherLevel.getBlockState(boundLocation.getSecond())))
+				otherLevel.destroyBlock(boundLocation.getSecond(), false);
+		}
+	}
+
 	private void registerToCurveInteraction() {
 		DistExecutor.unsafeRunWhenOn(Dist.CLIENT, () -> this::registerToCurveInteractionUnsafe);
 	}

src/main/java/com/simibubi/create/content/logistics/trains/track/TrackVoxelShapes.java

@@ -19,6 +19,10 @@ public class TrackVoxelShapes {
 		return Block.box(-14, 0, -3.3, 16 + 14, 4, 19.3);
 	}
 
+	public static VoxelShape longOrthogonalZOffset() {
+		return Block.box(-14, 0, 0, 16 + 14, 4, 24);
+	}
+
 	public static VoxelShape ascending() {
 		VoxelShape shape = Block.box(-14, 0, 0, 16 + 14, 4, 4);
 		VoxelShape[] shapes = new VoxelShape[6];

src/main/resources/assets/create/models/block/track/teleport.json

@@ -0,0 +1,171 @@
+{
+	"credit": "Made with Blockbench",
+	"ambientocclusion": false,
+	"texture_size": [32, 32],
+	"textures": {
+		"1": "create:block/portal_track",
+		"2": "create:block/portal_track_mip",
+		"3": "create:block/standard_track",
+		"particle": "create:block/palettes/stone_types/polished/andesite_cut_polished"
+	},
+	"elements": [
+		{
+			"name": "cube1",
+			"from": [8, -1.95625, 10],
+			"to": [29.95, 2.14375, 14],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"north": {"uv": [11, 2, 0, 4], "texture": "#1"},
+				"south": {"uv": [0, 2, 11, 4], "texture": "#1"},
+				"down": {"uv": [0, 0, 11, 2], "texture": "#1"}
+			}
+		},
+		{
+			"name": "cube2",
+			"from": [8, -1.95625, 2],
+			"to": [29.95, 2.14375, 6],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"north": {"uv": [11, 2, 0, 4], "texture": "#3"},
+				"south": {"uv": [0, 2, 11, 4], "texture": "#3"},
+				"down": {"uv": [0, 4, 11, 6], "texture": "#3"}
+			}
+		},
+		{
+			"name": "cube3",
+			"from": [-13.95, -1.95625, 10],
+			"to": [8, 2.14375, 14],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"north": {"uv": [0, 2, 11, 4], "texture": "#1"},
+				"south": {"uv": [11, 2, 0, 4], "texture": "#1"},
+				"down": {"uv": [0, 0, 11, 2], "rotation": 180, "texture": "#1"}
+			}
+		},
+		{
+			"name": "cube2",
+			"from": [8, -1.95625, 18],
+			"to": [29.95, 2.14375, 22],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"north": {"uv": [11, 14, 0, 16], "texture": "#1"},
+				"south": {"uv": [0, 14, 11, 16], "texture": "#1"},
+				"down": {"uv": [0, 4, 11, 6], "texture": "#1"}
+			}
+		},
+		{
+			"name": "cube4",
+			"from": [-13.95, -1.95625, 18],
+			"to": [8, 2.14375, 22],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"north": {"uv": [0, 14, 11, 16], "texture": "#1"},
+				"south": {"uv": [11, 14, 0, 16], "texture": "#1"},
+				"down": {"uv": [0, 4, 11, 6], "rotation": 180, "texture": "#1"}
+			}
+		},
+		{
+			"name": "cube4",
+			"from": [-13.95, -1.95625, 2],
+			"to": [8, 2.14375, 6],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"north": {"uv": [0, 2, 11, 4], "texture": "#3"},
+				"south": {"uv": [11, 2, 0, 4], "texture": "#3"},
+				"down": {"uv": [0, 4, 11, 6], "rotation": 180, "texture": "#3"}
+			}
+		},
+		{
+			"name": "cube5",
+			"from": [-13.95, -1.95625, 0],
+			"to": [8, 2.14375, 24],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"west": {"uv": [11, 12.5, 13.05, 0.5], "rotation": 90, "texture": "#2"},
+				"up": {"uv": [0, 12.5, 10.975, 0.5], "rotation": 180, "texture": "#2"}
+			}
+		},
+		{
+			"name": "cube6",
+			"from": [8, -1.95625, 0],
+			"to": [29.95, 2.14375, 24],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"east": {"uv": [11, 0.5, 13.05, 12.5], "rotation": 90, "texture": "#2"},
+				"up": {"uv": [0, 0.5, 10.975, 12.5], "texture": "#2"}
+			}
+		},
+		{
+			"name": "tie1",
+			"from": [21.35, 1.09375, 0],
+			"to": [25.55, 1.14375, 24],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"up": {"uv": [12, 8.5, 0, 10.5], "rotation": 270, "texture": "#1"},
+				"down": {"uv": [0, 8.5, 12, 10.5], "rotation": 270, "texture": "#1"}
+			}
+		},
+		{
+			"name": "tie2",
+			"from": [21.45, 5.49375, 0],
+			"to": [25.45, 5.54375, 24],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"up": {"uv": [12, 11.5, 0, 13.5], "rotation": 270, "texture": "#1"},
+				"down": {"uv": [0, 8.5, 12, 10.5], "rotation": 270, "texture": "#1"}
+			}
+		},
+		{
+			"name": "tie3",
+			"from": [21.9, 1.14375, 0],
+			"to": [25, 5.54375, 24],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"north": {"uv": [11, 2, 12.5, 4], "texture": "#3"},
+				"east": {"uv": [12, 6, 0, 8], "texture": "#1"},
+				"south": {"uv": [12.5, 2, 11, 4], "texture": "#1"},
+				"west": {"uv": [0, 6, 12, 8], "texture": "#1"}
+			}
+		},
+		{
+			"name": "tie4",
+			"from": [-9.45, 5.49375, 0],
+			"to": [-5.45, 5.54375, 24],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"up": {"uv": [12, 13.5, 0, 11.5], "rotation": 270, "texture": "#1"},
+				"down": {"uv": [0, 10.5, 12, 8.5], "rotation": 270, "texture": "#1"}
+			}
+		},
+		{
+			"name": "tie5",
+			"from": [-9, 1.14375, 0],
+			"to": [-5.9, 5.54375, 24],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"north": {"uv": [12.5, 2, 11, 4], "texture": "#3"},
+				"east": {"uv": [12, 6, 0, 8], "texture": "#1"},
+				"south": {"uv": [12.5, 2, 11, 4], "texture": "#1"},
+				"west": {"uv": [0, 6, 12, 8], "texture": "#1"}
+			}
+		},
+		{
+			"name": "tie6",
+			"from": [-9.55, 1.09375, 0],
+			"to": [-5.35, 1.14375, 24],
+			"rotation": {"angle": 0, "axis": "y", "origin": [8, 0, 8]},
+			"faces": {
+				"up": {"uv": [12, 10.5, 0, 8.5], "rotation": 270, "texture": "#1"},
+				"down": {"uv": [0, 10.5, 12, 8.5], "rotation": 270, "texture": "#1"}
+			}
+		}
+	],
+	"groups": [
+		{
+			"name": "group",
+			"origin": [0, 0, 0],
+			"color": 0,
+			"children": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
+		}
+	]
+}