Seats, part I

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

@@ -1,5 +1,6 @@
 package com.simibubi.create;
 
+import com.simibubi.create.content.contraptions.components.actors.SeatEntity;
 import com.simibubi.create.content.contraptions.components.structureMovement.ContraptionEntity;
 import com.simibubi.create.content.contraptions.components.structureMovement.ContraptionEntityRenderer;
 import com.simibubi.create.content.contraptions.components.structureMovement.glue.SuperGlueEntity;
@@ -24,6 +25,8 @@ public class AllEntityTypes {
 			register("stationary_contraption", ContraptionEntity::new, EntityClassification.MISC, 20, 40, false, ContraptionEntity::build);
 	public static final RegistryEntry<EntityType<SuperGlueEntity>> SUPER_GLUE =
 			register("super_glue", SuperGlueEntity::new, EntityClassification.MISC, 10, Integer.MAX_VALUE, false, SuperGlueEntity::build);
+	public static final RegistryEntry<EntityType<SeatEntity>> SEAT =
+			register("seat", SeatEntity::new, EntityClassification.MISC, 0, Integer.MAX_VALUE, false, SeatEntity::build);
 
 	private static <T extends Entity> RegistryEntry<EntityType<T>> register(String name, IFactory<T> factory,
 			EntityClassification group, int range, int updateFrequency, boolean sendVelocity,
@@ -45,5 +48,6 @@ public class AllEntityTypes {
 		RenderingRegistry.registerEntityRenderingHandler(STATIONARY_CONTRAPTION.get(), ContraptionEntityRenderer::new);
 		RenderingRegistry.registerEntityRenderingHandler(CONTRAPTION.get(), ContraptionEntityRenderer::new);
 		RenderingRegistry.registerEntityRenderingHandler(SUPER_GLUE.get(), SuperGlueRenderer::new);
+		RenderingRegistry.registerEntityRenderingHandler(SEAT.get(), SeatEntity.Render::new);
 	}
 }

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

@@ -4,13 +4,20 @@ import com.simibubi.create.AllShapes;
 
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemGroup;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.ActionResultType;
+import net.minecraft.util.Hand;
 import net.minecraft.util.NonNullList;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.BlockRayTraceResult;
 import net.minecraft.util.math.shapes.ISelectionContext;
 import net.minecraft.util.math.shapes.VoxelShape;
 import net.minecraft.world.IBlockReader;
+import net.minecraft.world.World;
 
 public class SeatBlock extends Block {
 
@@ -28,10 +35,34 @@ public class SeatBlock extends Block {
 		super.fillItemGroup(group, p_149666_2_);
 	}
 
+	@Override
+	public void onFallenUpon(World p_180658_1_, BlockPos p_180658_2_, Entity p_180658_3_, float p_180658_4_) {
+		super.onFallenUpon(p_180658_1_, p_180658_2_, p_180658_3_, p_180658_4_ * 0.5F);
+	}
+
+	@Override
+	public void onLanded(IBlockReader p_176216_1_, Entity p_176216_2_) {
+		Blocks.PINK_BED.onLanded(p_176216_1_, p_176216_2_);
+	}
+
 	@Override
 	public VoxelShape getShape(BlockState p_220053_1_, IBlockReader p_220053_2_, BlockPos p_220053_3_,
 		ISelectionContext p_220053_4_) {
 		return AllShapes.SEAT;
 	}
 
+	@Override
+	public ActionResultType onUse(BlockState p_225533_1_, World world, BlockPos pos, PlayerEntity player, Hand p_225533_5_, BlockRayTraceResult p_225533_6_) {
+		if (SeatEntity.TAKEN.containsKey(pos))
+			return ActionResultType.FAIL;
+
+		if (world.isRemote)
+			return ActionResultType.SUCCESS;
+
+		SeatEntity seat = new SeatEntity(world, pos);
+		world.addEntity(seat);
+		player.startRiding(seat);
+
+		return ActionResultType.SUCCESS;
+	}
 }

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

@@ -0,0 +1,97 @@
+package com.simibubi.create.content.contraptions.components.actors;
+
+import com.simibubi.create.AllEntityTypes;
+import net.minecraft.client.renderer.culling.ClippingHelperImpl;
+import net.minecraft.client.renderer.entity.EntityRenderer;
+import net.minecraft.client.renderer.entity.EntityRendererManager;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityType;
+import net.minecraft.nbt.CompoundNBT;
+import net.minecraft.network.IPacket;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.World;
+import net.minecraftforge.fml.network.NetworkHooks;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class SeatEntity extends Entity {
+
+	public static final Map<BlockPos, SeatEntity> TAKEN = new HashMap<>();
+
+	public SeatEntity(EntityType<?> p_i48580_1_, World p_i48580_2_) {
+		super(p_i48580_1_, p_i48580_2_);
+	}
+
+	public SeatEntity(World world, BlockPos pos) {
+		this(AllEntityTypes.SEAT.get(), world);
+		this.setPos(pos.getX() + 0.5, pos.getY() + 0.30, pos.getZ() + 0.5);
+		noClip = true;
+		TAKEN.put(pos, this);
+
+	}
+
+	public static EntityType.Builder<?> build(EntityType.Builder<?> builder) {
+		@SuppressWarnings("unchecked")
+		EntityType.Builder<SeatEntity> entityBuilder = (EntityType.Builder<SeatEntity>) builder;
+		return entityBuilder.size(0, 0);
+	}
+
+	@Override
+	public void tick() {
+		if (world.isRemote)
+			return;
+
+		BlockPos blockPos = new BlockPos(getX(), getY(), getZ());
+		if (isBeingRidden() && world.getBlockState(blockPos).getBlock() instanceof SeatBlock)
+			return;
+
+		TAKEN.remove(blockPos);
+		this.remove();
+	}
+
+	@Override
+	protected boolean canBeRidden(Entity p_184228_1_) {
+		return true;
+	}
+
+	@Override
+	protected void removePassenger(Entity entity) {
+		super.removePassenger(entity);
+		Vec3d pos = entity.getPositionVec();
+		entity.setPosition(pos.x, pos.y + 0.7, pos.z);
+	}
+
+	@Override
+	protected void registerData() {}
+
+	@Override
+	protected void readAdditional(CompoundNBT p_70037_1_) {}
+
+	@Override
+	protected void writeAdditional(CompoundNBT p_213281_1_) {}
+
+	@Override
+	public IPacket<?> createSpawnPacket() {
+		return NetworkHooks.getEntitySpawningPacket(this);
+	}
+
+	public static class Render extends EntityRenderer<SeatEntity> {
+
+		public Render(EntityRendererManager p_i46179_1_) {
+			super(p_i46179_1_);
+		}
+
+		@Override
+		public boolean shouldRender(SeatEntity p_225626_1_, ClippingHelperImpl p_225626_2_, double p_225626_3_, double p_225626_5_, double p_225626_7_) {
+			return false;
+		}
+
+		@Override
+		public ResourceLocation getEntityTexture(SeatEntity p_110775_1_) {
+			return null;
+		}
+	}
+}