ExtractionBehaviour and Synchronized Extractors

- Added Inventory Manipulation and Extraction Behaviours
- Extractors are now aware of other extractors on the same inventory and will take turns

src/main/java/com/simibubi/create/foundation/behaviour/LinkedBehaviour.java

@@ -1,21 +0,0 @@
-package com.simibubi.create.foundation.behaviour;
-
-import com.simibubi.create.foundation.behaviour.base.IBehaviourType;
-import com.simibubi.create.foundation.behaviour.base.SmartTileEntity;
-import com.simibubi.create.foundation.behaviour.base.TileEntityBehaviour;
-
-public class LinkedBehaviour extends TileEntityBehaviour {
-
-	public static IBehaviourType<LinkedBehaviour> TYPE = new IBehaviourType<LinkedBehaviour>() {
-	};
-
-	public LinkedBehaviour(SmartTileEntity te) {
-		super(te);
-	}
-
-	@Override
-	public IBehaviourType<?> getType() {
-		return TYPE;
-	}
-
-}

src/main/java/com/simibubi/create/foundation/behaviour/base/TileEntityBehaviour.java

@@ -12,10 +12,13 @@ public abstract class TileEntityBehaviour {
 
 	public SmartTileEntity tileEntity;
 	private boolean paused;
+	private int lazyTickRate;
+	private int lazyTickCounter;
 
 	public TileEntityBehaviour(SmartTileEntity te) {
 		tileEntity = te;
 		paused = false;
+		setLazyTickRate(10);
 	}
 
 	public abstract IBehaviourType<?> getType();
@@ -25,6 +28,10 @@ public abstract class TileEntityBehaviour {
 	}
 
 	public void tick() {
+		if (lazyTickCounter-- <= 0) {
+			lazyTickCounter = lazyTickRate;
+			lazyTick();
+		}
 			
 	}
 
@@ -56,6 +63,15 @@ public abstract class TileEntityBehaviour {
 		return paused;
 	}
 
+	public void setLazyTickRate(int slowTickRate) {
+		this.lazyTickRate = slowTickRate;
+		this.lazyTickCounter = slowTickRate;
+	}
+
+	public void lazyTick() {
+
+	}
+
 	public void setPaused(boolean paused) {
 		this.paused = paused;
 	}

src/main/java/com/simibubi/create/foundation/behaviour/inventory/AutoExtractingBehaviour.java

@@ -0,0 +1,80 @@
+package com.simibubi.create.foundation.behaviour.inventory;
+
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.simibubi.create.foundation.behaviour.base.IBehaviourType;
+import com.simibubi.create.foundation.behaviour.base.SmartTileEntity;
+
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+
+public class AutoExtractingBehaviour extends ExtractingBehaviour {
+
+	public static IBehaviourType<AutoExtractingBehaviour> TYPE = new IBehaviourType<AutoExtractingBehaviour>() {
+	};
+
+	private int delay;
+	private int timer;
+	Supplier<Boolean> shouldExtract;
+	Supplier<Boolean> shouldPause;
+
+	public AutoExtractingBehaviour(SmartTileEntity te, Supplier<List<Pair<BlockPos, Direction>>> attachments,
+			Consumer<ItemStack> onExtract, int delay) {
+		super(te, attachments, onExtract);
+		shouldPause = () -> false;
+		shouldExtract = () -> true;
+		this.delay = delay;
+	}
+
+	public AutoExtractingBehaviour pauseWhen(Supplier<Boolean> condition) {
+		shouldPause = condition;
+		return this;
+	}
+
+	public ExtractingBehaviour waitUntil(Supplier<Boolean> condition) {
+		this.shouldExtract = condition;
+		return this;
+	}
+
+	public void setDelay(int delay) {
+		this.delay = delay;
+		this.timer = delay;
+	}
+
+	@Override
+	public boolean extract() {
+		timer = delay;
+		return super.extract();
+	}
+
+	@Override
+	public void tick() {
+		super.tick();
+
+		if (shouldPause.get()) {
+			timer = 0;
+			return;
+		}
+
+		if (timer > 0) {
+			timer--;
+			return;
+		}
+
+		if (!shouldExtract.get())
+			return;
+
+		extract();
+	}
+
+	@Override
+	public IBehaviourType<?> getType() {
+		return TYPE;
+	}
+
+}

src/main/java/com/simibubi/create/foundation/behaviour/inventory/ExtractingBehaviour.java

@@ -0,0 +1,70 @@
+package com.simibubi.create.foundation.behaviour.inventory;
+
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+import java.util.function.Supplier;
+
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.simibubi.create.foundation.behaviour.base.IBehaviourType;
+import com.simibubi.create.foundation.behaviour.base.SmartTileEntity;
+import com.simibubi.create.foundation.behaviour.filtering.FilteringBehaviour;
+import com.simibubi.create.foundation.item.ItemHelper;
+
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraftforge.items.IItemHandler;
+
+public class ExtractingBehaviour extends InventoryManagementBehaviour {
+
+	public static IBehaviourType<ExtractingBehaviour> TYPE = new IBehaviourType<ExtractingBehaviour>() {
+	};
+
+	private Predicate<ItemStack> extractionFilter;
+	private Consumer<ItemStack> callback;
+
+	public ExtractingBehaviour(SmartTileEntity te, Supplier<List<Pair<BlockPos, Direction>>> attachments,
+			Consumer<ItemStack> onExtract) {
+		super(te, attachments);
+		extractionFilter = stack -> true;
+		callback = onExtract;
+	}
+
+	public ExtractingBehaviour withSpecialFilter(Predicate<ItemStack> filter) {
+		this.extractionFilter = filter;
+		return this;
+	}
+
+	public boolean extract() {
+		if (getWorld().isRemote)
+			return false;
+
+		int amount = -1;
+		Predicate<ItemStack> test = extractionFilter;
+
+		FilteringBehaviour filter = get(tileEntity, FilteringBehaviour.TYPE);
+		if (filter != null) {
+			ItemStack filterItem = filter.getFilter();
+			amount = filterItem.isEmpty() ? -1 : filterItem.getCount();
+			test = extractionFilter.and(filter::test);
+		}
+
+		for (IItemHandler inv : getInventories()) {
+			ItemStack extract = ItemHelper.extract(inv, test, amount, false);
+			if (!extract.isEmpty()) {
+				callback.accept(extract);
+				return true;
+			}
+		}
+		
+		return false;
+	}
+
+	@Override
+	public IBehaviourType<?> getType() {
+		return TYPE;
+	}
+
+}

src/main/java/com/simibubi/create/foundation/behaviour/inventory/InsertingBehaviour.java

@@ -0,0 +1,28 @@
+package com.simibubi.create.foundation.behaviour.inventory;
+
+import java.util.List;
+import java.util.function.Supplier;
+
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.simibubi.create.foundation.behaviour.base.IBehaviourType;
+import com.simibubi.create.foundation.behaviour.base.SmartTileEntity;
+
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+
+public class InsertingBehaviour extends InventoryManagementBehaviour {
+
+	public static IBehaviourType<InsertingBehaviour> TYPE = new IBehaviourType<InsertingBehaviour>() {
+	};
+
+	public InsertingBehaviour(SmartTileEntity te, Supplier<List<Pair<BlockPos, Direction>>> attachments) {
+		super(te, attachments);
+	}
+
+	@Override
+	public IBehaviourType<?> getType() {
+		return TYPE;
+	}
+
+}

src/main/java/com/simibubi/create/foundation/behaviour/inventory/InventoryManagementBehaviour.java

@@ -0,0 +1,110 @@
+package com.simibubi.create.foundation.behaviour.inventory;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Supplier;
+
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.google.common.collect.ImmutableList;
+import com.simibubi.create.foundation.behaviour.base.IBehaviourType;
+import com.simibubi.create.foundation.behaviour.base.SmartTileEntity;
+import com.simibubi.create.foundation.behaviour.base.TileEntityBehaviour;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import net.minecraftforge.common.util.LazyOptional;
+import net.minecraftforge.items.CapabilityItemHandler;
+import net.minecraftforge.items.IItemHandler;
+
+public class InventoryManagementBehaviour extends TileEntityBehaviour {
+
+	Map<Pair<BlockPos, Direction>, LazyOptional<IItemHandler>> inventories;
+	private Supplier<List<Pair<BlockPos, Direction>>> attachments;
+	private List<IItemHandler> activeHandlers;
+
+	public static IBehaviourType<InventoryManagementBehaviour> TYPE = new IBehaviourType<InventoryManagementBehaviour>() {
+	};
+
+	public InventoryManagementBehaviour(SmartTileEntity te, Supplier<List<Pair<BlockPos, Direction>>> attachments) {
+		super(te);
+		this.attachments = attachments;
+		setLazyTickRate(20);
+		activeHandlers = new ArrayList<>();
+		inventories = new HashMap<>();
+	}
+
+	@Override
+	public void initialize() {
+		super.initialize();
+		attachments.get().forEach(offset -> inventories.put(offset, findInventory(offset)));
+	}
+
+	@Override
+	public void lazyTick() {
+		super.lazyTick();
+		activeHandlers.clear();
+		for (Pair<BlockPos, Direction> pair : inventories.keySet()) {
+			LazyOptional<IItemHandler> lazyOptional = inventories.get(pair);
+			if (lazyOptional.isPresent()) {
+				activeHandlers.add(lazyOptional.orElse(null));
+				continue;
+			}
+
+			lazyOptional = findInventory(pair);
+			if (lazyOptional.isPresent())
+				activeHandlers.add(lazyOptional.orElse(null));
+			inventories.put(pair, lazyOptional);
+		}
+	}
+
+	public List<IItemHandler> getInventories() {
+		return activeHandlers;
+	}
+
+	public IItemHandler getInventory() {
+		if (activeHandlers.isEmpty())
+			return null;
+		return activeHandlers.get(0);
+	}
+
+	protected LazyOptional<IItemHandler> findInventory(Pair<BlockPos, Direction> offset) {
+		BlockPos invPos = tileEntity.getPos().add(offset.getKey());
+		World world = getWorld();
+
+		if (!world.isBlockPresent(invPos))
+			return LazyOptional.empty();
+		BlockState invState = world.getBlockState(invPos);
+
+		if (!invState.hasTileEntity())
+			return LazyOptional.empty();
+		TileEntity invTE = world.getTileEntity(invPos);
+		if (invTE == null)
+			return LazyOptional.empty();
+
+		LazyOptional<IItemHandler> inventory = invTE.getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY,
+				offset.getValue());
+		if (inventory == null) {
+			return LazyOptional.empty();
+		}
+
+		return inventory;
+	}
+
+	@Override
+	public IBehaviourType<?> getType() {
+		return TYPE;
+	}
+
+	public static class Attachments {
+		public static final Supplier<List<Pair<BlockPos, Direction>>> toward(Supplier<Direction> facing) {
+			return () -> ImmutableList.of(Pair.of(new BlockPos(facing.get().getDirectionVec()), facing.get()));
+		};
+	}
+
+}

src/main/java/com/simibubi/create/foundation/behaviour/inventory/SingleTargetAutoExtractingBehaviour.java

@@ -0,0 +1,53 @@
+package com.simibubi.create.foundation.behaviour.inventory;
+
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+import com.simibubi.create.foundation.behaviour.base.IBehaviourType;
+import com.simibubi.create.foundation.behaviour.base.SmartTileEntity;
+
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+
+public class SingleTargetAutoExtractingBehaviour extends AutoExtractingBehaviour {
+
+	public static IBehaviourType<SingleTargetAutoExtractingBehaviour> TYPE = new IBehaviourType<SingleTargetAutoExtractingBehaviour>() {
+	};
+
+	private Supplier<Direction> attachmentDirection;
+	boolean synced;
+	boolean advantageOnNextSync;
+
+	public SingleTargetAutoExtractingBehaviour(SmartTileEntity te, Supplier<Direction> attachmentDirection,
+			Consumer<ItemStack> onExtract, int delay) {
+		super(te, Attachments.toward(attachmentDirection), onExtract, delay);
+		this.attachmentDirection = attachmentDirection;
+		synced = true;
+		advantageOnNextSync = false;
+	}
+
+	public SingleTargetAutoExtractingBehaviour dontSynchronize() {
+		synced = false;
+		return this;
+	}
+
+	@Override
+	public boolean extract() {
+		if (synced) {
+			BlockPos invPos = tileEntity.getPos().offset(attachmentDirection.get());
+			return SynchronizedExtraction.extractSynchronized(getWorld(), invPos);
+		} else
+			return extractFromInventory();
+	}
+
+	public boolean extractFromInventory() {
+		return super.extract();
+	}
+
+	@Override
+	public IBehaviourType<?> getType() {
+		return TYPE;
+	}
+
+}

src/main/java/com/simibubi/create/foundation/behaviour/inventory/SynchronizedExtraction.java

@@ -0,0 +1,67 @@
+package com.simibubi.create.foundation.behaviour.inventory;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.simibubi.create.foundation.behaviour.base.TileEntityBehaviour;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ChestBlock;
+import net.minecraft.state.properties.ChestType;
+import net.minecraft.util.Direction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.IEnviromentBlockReader;
+
+public class SynchronizedExtraction {
+
+	static boolean extractSynchronized(IEnviromentBlockReader reader, BlockPos inventoryPos) {
+		List<SingleTargetAutoExtractingBehaviour> actors = getAllSyncedExtractors(reader, inventoryPos);
+		int startIndex = actors.size() - 1;
+		boolean success = false;
+
+		for (; startIndex > 0; startIndex--)
+			if (actors.get(startIndex).advantageOnNextSync)
+				break;
+		for (int i = 0; i < actors.size(); i++)
+			success |= actors.get((startIndex + i) % actors.size()).extractFromInventory();
+
+		if (success) {
+			actors.get(startIndex).advantageOnNextSync = false;
+			actors.get((startIndex + 1) % actors.size()).advantageOnNextSync = true;
+		}
+
+		return success;
+	}
+
+	private static List<SingleTargetAutoExtractingBehaviour> getAllSyncedExtractors(IEnviromentBlockReader reader,
+			BlockPos inventoryPos) {
+		List<SingleTargetAutoExtractingBehaviour> list = new ArrayList<>();
+		List<BlockPos> inventoryPositions = new ArrayList<>();
+		inventoryPositions.add(inventoryPos);
+
+		// Sync across double chests
+		BlockState blockState = reader.getBlockState(inventoryPos);
+		if (blockState.getBlock() instanceof ChestBlock)
+			if (blockState.get(ChestBlock.TYPE) != ChestType.SINGLE)
+				inventoryPositions.add(inventoryPos.offset(ChestBlock.getDirectionToAttached(blockState)));
+
+		for (BlockPos pos : inventoryPositions) {
+			for (Direction direction : Direction.values()) {
+				SingleTargetAutoExtractingBehaviour behaviour = TileEntityBehaviour.get(reader, pos.offset(direction),
+						SingleTargetAutoExtractingBehaviour.TYPE);
+				if (behaviour == null)
+					continue;
+				if (!behaviour.synced)
+					continue;
+				if (behaviour.shouldPause.get())
+					continue;
+				if (!behaviour.shouldExtract.get())
+					continue;
+
+				list.add(behaviour);
+			}
+		}
+		return list;
+	}
+
+}

src/main/java/com/simibubi/create/foundation/item/ItemHelper.java

@@ -2,10 +2,13 @@ package com.simibubi.create.foundation.item;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.function.Predicate;
 
 import org.apache.commons.lang3.mutable.MutableInt;
 import org.apache.commons.lang3.tuple.Pair;
 
+import com.simibubi.create.CreateConfig;
+
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.crafting.Ingredient;
 import net.minecraft.util.NonNullList;
@@ -85,4 +88,57 @@ public class ItemHelper {
 		return false;
 	}
 
+	public static ItemStack extract(IItemHandler inv, Predicate<ItemStack> test, boolean simulate) {
+		return extract(inv, test, -1, simulate);
+	}
+
+	public static ItemStack extract(IItemHandler inv, Predicate<ItemStack> test, int exactAmount, boolean simulate) {
+		ItemStack extracting = ItemStack.EMPTY;
+		boolean amountRequired = exactAmount != -1;
+		boolean checkHasEnoughItems = amountRequired;
+		boolean hasEnoughItems = !checkHasEnoughItems;
+		int maxExtractionCount = hasEnoughItems ? CreateConfig.parameters.extractorAmount.get() : exactAmount;
+
+		Extraction: do {
+			extracting = ItemStack.EMPTY;
+
+			for (int slot = 0; slot < inv.getSlots(); slot++) {
+				ItemStack stack = inv.extractItem(slot, maxExtractionCount - extracting.getCount(), true);
+
+				if (!test.test(stack))
+					continue;
+				if (!extracting.isEmpty() && !ItemHandlerHelper.canItemStacksStack(stack, extracting))
+					continue;
+
+				if (extracting.isEmpty())
+					extracting = stack.copy();
+				else
+					extracting.grow(stack.getCount());
+
+				if (!simulate && hasEnoughItems)
+					inv.extractItem(slot, stack.getCount(), false);
+
+				if (extracting.getCount() >= maxExtractionCount) {
+					if (checkHasEnoughItems) {
+						hasEnoughItems = true;
+						checkHasEnoughItems = false;
+						continue Extraction;
+					} else {
+						break Extraction;
+					}
+				}
+			}
+
+			if (checkHasEnoughItems)
+				checkHasEnoughItems = false;
+			else
+				break Extraction;
+		} while (true);
+		
+		if (amountRequired && extracting.getCount() < exactAmount)
+			return ItemStack.EMPTY;
+
+		return extracting;
+	}
+
 }

src/main/java/com/simibubi/create/modules/logistics/block/IExtractor.java

@@ -25,7 +25,7 @@ import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.World;
 import net.minecraftforge.items.IItemHandler;
 
-// Its like delegation but better!
+// Its like delegation but worse!
 public interface IExtractor extends ITickableTileEntity, IInventoryManipulator {
 
 	public enum State {

src/main/java/com/simibubi/create/modules/logistics/block/belts/AttachedLogisticalBlock.java

@@ -18,11 +18,11 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IWorldReader;
 import net.minecraft.world.World;
 
-public abstract class AttachedLogisiticalBlock extends HorizontalBlock implements IHaveNoBlockItem {
+public abstract class AttachedLogisticalBlock extends HorizontalBlock implements IHaveNoBlockItem {
 
 	public static final BooleanProperty UPWARD = BooleanProperty.create("upward");
 
-	public AttachedLogisiticalBlock() {
+	public AttachedLogisticalBlock() {
 		super(Properties.from(Blocks.ANDESITE));
 	}
 
@@ -97,8 +97,8 @@ public abstract class AttachedLogisiticalBlock extends HorizontalBlock implement
 
 	public static boolean isVertical(BlockState state) {
 		Block block = state.getBlock();
-		return ((block instanceof AttachedLogisiticalBlock)
-				&& (((AttachedLogisiticalBlock) state.getBlock())).isVertical());
+		return ((block instanceof AttachedLogisticalBlock)
+				&& (((AttachedLogisticalBlock) state.getBlock())).isVertical());
 	}
 
 	@Override

src/main/java/com/simibubi/create/modules/logistics/block/belts/FunnelBlock.java

@@ -29,7 +29,7 @@ import net.minecraft.world.IWorld;
 import net.minecraft.world.IWorldReader;
 import net.minecraft.world.World;
 
-public class FunnelBlock extends AttachedLogisiticalBlock
+public class FunnelBlock extends AttachedLogisticalBlock
 		implements IBeltAttachment, IWithTileEntity<FunnelTileEntity> {
 
 	public static final BooleanProperty BELT = BooleanProperty.create("belt");
@@ -61,18 +61,6 @@ public class FunnelBlock extends AttachedLogisiticalBlock
 		return AllBlocks.VERTICAL_FUNNEL.getDefault();
 	}
 
-	@Override
-	public void neighborChanged(BlockState state, World worldIn, BlockPos pos, Block blockIn, BlockPos fromPos,
-			boolean isMoving) {
-		Direction blockFacing = state.get(HORIZONTAL_FACING);
-		if (fromPos.equals(pos.offset(blockFacing))) {
-			if (!isValidPosition(state, worldIn, pos)) {
-				worldIn.destroyBlock(pos, true);
-				return;
-			}
-		}
-	}
-
 	@Override
 	public BlockState updatePostPlacement(BlockState stateIn, Direction facing, BlockState facingState, IWorld worldIn,
 			BlockPos currentPos, BlockPos facingPos) {

src/main/java/com/simibubi/create/modules/logistics/block/belts/FunnelTileEntity.java

@@ -165,16 +165,16 @@ public class FunnelTileEntity extends SmartTileEntity implements ITickableTileEn
 			Vec3d vec = offsetForHorizontal;
 
 			float yRot = AngleHelper.horizontalAngle(state.get(ExtractorBlock.HORIZONTAL_FACING));
-			if (AttachedLogisiticalBlock.isVertical(state))
-				vec = state.get(AttachedLogisiticalBlock.UPWARD) ? offsetForUpward : offsetForDownward;
+			if (AttachedLogisticalBlock.isVertical(state))
+				vec = state.get(AttachedLogisticalBlock.UPWARD) ? offsetForUpward : offsetForDownward;
 			else if (state.get(FunnelBlock.BELT))
 				vec = offsetForBelt;
 
 			return VecHelper.rotateCentered(vec, yRot, Axis.Y);
 
 		}, state -> {
-			Direction blockFacing = AttachedLogisiticalBlock.getBlockFacing(state);
-			boolean vertical = AttachedLogisiticalBlock.isVertical(state);
+			Direction blockFacing = AttachedLogisticalBlock.getBlockFacing(state);
+			boolean vertical = AttachedLogisticalBlock.isVertical(state);
 			float horizontalAngle = AngleHelper.horizontalAngle(state.get(ExtractorBlock.HORIZONTAL_FACING));
 
 			float yRot = blockFacing == Direction.DOWN ? horizontalAngle + 180 : horizontalAngle;

src/main/java/com/simibubi/create/modules/logistics/block/extractor/ExtractorBlock.java

@@ -4,8 +4,7 @@ import com.simibubi.create.AllBlocks;
 import com.simibubi.create.foundation.utility.AllShapes;
 import com.simibubi.create.foundation.utility.AngleHelper;
 import com.simibubi.create.foundation.utility.VecHelper;
-import com.simibubi.create.modules.logistics.block.IExtractor;
-import com.simibubi.create.modules.logistics.block.belts.AttachedLogisiticalBlock;
+import com.simibubi.create.modules.logistics.block.belts.AttachedLogisticalBlock;
 
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
@@ -20,10 +19,9 @@ import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.math.shapes.ISelectionContext;
 import net.minecraft.util.math.shapes.VoxelShape;
 import net.minecraft.world.IBlockReader;
-import net.minecraft.world.IWorldReader;
 import net.minecraft.world.World;
 
-public class ExtractorBlock extends AttachedLogisiticalBlock {
+public class ExtractorBlock extends AttachedLogisticalBlock {
 
 	public static BooleanProperty POWERED = BlockStateProperties.POWERED;
 
@@ -63,31 +61,6 @@ public class ExtractorBlock extends AttachedLogisiticalBlock {
 				reactsToRedstone() && context.getWorld().isBlockPowered(context.getPos()));
 	}
 
-	@Override
-	public void onBlockAdded(BlockState state, World worldIn, BlockPos pos, BlockState oldState, boolean isMoving) {
-		updateObservedInventory(state, worldIn, pos);
-	}
-
-	@Override
-	public void onNeighborChange(BlockState state, IWorldReader world, BlockPos pos, BlockPos neighbor) {
-		if (world.isRemote())
-			return;
-		if (!isObserving(state, pos, neighbor))
-			return;
-		updateObservedInventory(state, world, pos);
-	}
-
-	private void updateObservedInventory(BlockState state, IWorldReader world, BlockPos pos) {
-		IExtractor extractor = (IExtractor) world.getTileEntity(pos);
-		if (extractor == null)
-			return;
-		extractor.neighborChanged();
-	}
-
-	private boolean isObserving(BlockState state, BlockPos pos, BlockPos observing) {
-		return observing.equals(pos.offset(getBlockFacing(state)));
-	}
-
 	@Override
 	public void neighborChanged(BlockState state, World worldIn, BlockPos pos, Block blockIn, BlockPos fromPos,
 			boolean isMoving) {
@@ -99,13 +72,8 @@ public class ExtractorBlock extends AttachedLogisiticalBlock {
 			return;
 
 		boolean previouslyPowered = state.get(POWERED);
-		if (previouslyPowered != worldIn.isBlockPowered(pos)) {
+		if (previouslyPowered != worldIn.isBlockPowered(pos))
 			worldIn.setBlockState(pos, state.cycle(POWERED), 2);
-			IExtractor extractor = (IExtractor) worldIn.getTileEntity(pos);
-			if (extractor == null)
-				return;
-			extractor.setLocked(!previouslyPowered);
-		}
 	}
 
 	protected boolean reactsToRedstone() {
@@ -126,15 +94,15 @@ public class ExtractorBlock extends AttachedLogisiticalBlock {
 		Vec3d vec = offsetForHorizontal;
 
 		float yRot = AngleHelper.horizontalAngle(state.get(ExtractorBlock.HORIZONTAL_FACING));
-		if (AttachedLogisiticalBlock.isVertical(state))
-			vec = state.get(AttachedLogisiticalBlock.UPWARD) ? offsetForUpward : offsetForDownward;
+		if (AttachedLogisticalBlock.isVertical(state))
+			vec = state.get(AttachedLogisticalBlock.UPWARD) ? offsetForUpward : offsetForDownward;
 
 		return VecHelper.rotateCentered(vec, yRot, Axis.Y);
 	}
 
 	public static Vec3d getFilterSlotOrientation(BlockState state) {
 		float yRot = AngleHelper.horizontalAngle(state.get(ExtractorBlock.HORIZONTAL_FACING));
-		float zRot = (AttachedLogisiticalBlock.isVertical(state)) ? 0 : 90;
+		float zRot = (AttachedLogisticalBlock.isVertical(state)) ? 0 : 90;
 		return new Vec3d(0, yRot, zRot);
 	}
 

src/main/java/com/simibubi/create/modules/logistics/block/extractor/ExtractorTileEntity.java

@@ -2,32 +2,37 @@ package com.simibubi.create.modules.logistics.block.extractor;
 
 import java.util.List;
 
+import com.simibubi.create.AllBlocks;
 import com.simibubi.create.AllTileEntities;
 import com.simibubi.create.CreateConfig;
 import com.simibubi.create.foundation.behaviour.base.SmartTileEntity;
 import com.simibubi.create.foundation.behaviour.base.TileEntityBehaviour;
 import com.simibubi.create.foundation.behaviour.filtering.FilteringBehaviour;
 import com.simibubi.create.foundation.behaviour.filtering.FilteringBehaviour.SlotPositioning;
-import com.simibubi.create.modules.logistics.block.IExtractor;
-import com.simibubi.create.modules.logistics.block.belts.AttachedLogisiticalBlock;
+import com.simibubi.create.foundation.behaviour.inventory.ExtractingBehaviour;
+import com.simibubi.create.foundation.behaviour.inventory.SingleTargetAutoExtractingBehaviour;
+import com.simibubi.create.foundation.utility.VecHelper;
+import com.simibubi.create.modules.contraptions.relays.belt.BeltTileEntity;
+import com.simibubi.create.modules.logistics.block.belts.AttachedLogisticalBlock;
+import com.simibubi.create.modules.logistics.item.CardboardBoxItem;
+import com.simibubi.create.modules.logistics.transport.CardboardBoxEntity;
 
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockState;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.item.ItemEntity;
 import net.minecraft.item.ItemStack;
-import net.minecraft.nbt.CompoundNBT;
-import net.minecraft.tileentity.ITickableTileEntity;
+import net.minecraft.tileentity.TileEntity;
 import net.minecraft.tileentity.TileEntityType;
-import net.minecraft.util.math.BlockPos;
-import net.minecraftforge.common.util.LazyOptional;
-import net.minecraftforge.items.IItemHandler;
+import net.minecraft.util.Direction;
+import net.minecraft.util.SoundCategory;
+import net.minecraft.util.SoundEvents;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.Vec3d;
 
-public class ExtractorTileEntity extends SmartTileEntity implements IExtractor, ITickableTileEntity {
+public class ExtractorTileEntity extends SmartTileEntity {
 
 	private static FilteringBehaviour.SlotPositioning slots;
 
-	private State state;
-	private int cooldown;
-	private LazyOptional<IItemHandler> inventory;
+	private ExtractingBehaviour extracting;
 	private FilteringBehaviour filtering;
 
 	public ExtractorTileEntity() {
@@ -36,13 +41,16 @@ public class ExtractorTileEntity extends SmartTileEntity implements IExtractor,
 
 	protected ExtractorTileEntity(TileEntityType<?> tileEntityTypeIn) {
 		super(tileEntityTypeIn);
-		state = State.ON_COOLDOWN;
-		cooldown = CreateConfig.parameters.extractorDelay.get();
-		inventory = LazyOptional.empty();
 	}
 
 	@Override
 	public void addBehaviours(List<TileEntityBehaviour> behaviours) {
+		int delay = CreateConfig.parameters.extractorDelay.get();
+		extracting = new SingleTargetAutoExtractingBehaviour(this,
+				() -> AttachedLogisticalBlock.getBlockFacing(getBlockState()), this::onExtract, delay)
+						.pauseWhen(this::isPowered).waitUntil(this::canExtract);
+		behaviours.add(extracting);
+
 		if (slots == null)
 			slots = new SlotPositioning(ExtractorBlock::getFilterSlotPosition, ExtractorBlock::getFilterSlotOrientation)
 					.scale(.4f);
@@ -51,73 +59,49 @@ public class ExtractorTileEntity extends SmartTileEntity implements IExtractor,
 		behaviours.add(filtering);
 	}
 
-	public void filterChanged(ItemStack stack) {
-		neighborChanged();
+	private void onExtract(ItemStack stack) {
+		Vec3d entityPos = VecHelper.getCenterOf(getPos()).add(0, -0.5f, 0);
+		Entity entityIn = null;
+		Direction facing = AttachedLogisticalBlock.getBlockFacing(getBlockState());
+		if (facing == Direction.DOWN)
+			entityPos = entityPos.add(0, .5, 0);
+
+		if (stack.getItem() instanceof CardboardBoxItem) {
+			entityIn = new CardboardBoxEntity(world, entityPos, stack, facing.getOpposite());
+			world.playSound(null, getPos(), SoundEvents.ENTITY_ITEM_PICKUP, SoundCategory.BLOCKS, .25f, .05f);
+
+		} else {
+			entityIn = new ItemEntity(world, entityPos.x, entityPos.y, entityPos.z, stack);
+			entityIn.setMotion(Vec3d.ZERO);
+			((ItemEntity) entityIn).setPickupDelay(5);
+			world.playSound(null, getPos(), SoundEvents.ENTITY_ITEM_PICKUP, SoundCategory.BLOCKS, .125f, .1f);
+		}
+
+		world.addEntity(entityIn);
 	}
 
-	@Override
-	public State getState() {
-		return state;
+	protected boolean isPowered() {
+		return getBlockState().get(ExtractorBlock.POWERED);
 	}
 
-	@Override
-	public void read(CompoundNBT compound) {
-		if (compound.getBoolean("Locked"))
-			setState(State.LOCKED);
-		super.read(compound);
+	private void filterChanged(ItemStack stack) {
+
 	}
 
-	@Override
-	public CompoundNBT write(CompoundNBT compound) {
-		compound.putBoolean("Locked", getState() == State.LOCKED);
-		return super.write(compound);
-	}
+	private boolean canExtract() {
+		if (AllBlocks.BELT.typeOf(world.getBlockState(pos.down()))) {
+			TileEntity te = world.getTileEntity(pos.down());
+			if (te != null && te instanceof BeltTileEntity) {
+				BeltTileEntity belt = (BeltTileEntity) te;
+				BeltTileEntity controller = belt.getControllerTE();
+				if (controller != null) {
+					if (!controller.getInventory().canInsertFrom(belt.index, Direction.UP))
+						return false;
+				}
+			}
+		}
 
-	@Override
-	public void initialize() {
-		super.initialize();
-		if (world.isBlockPowered(pos))
-			state = State.LOCKED;
-		neighborChanged();
-	}
-
-	@Override
-	public void tick() {
-		super.tick();
-		IExtractor.super.tick();
-	}
-
-	@Override
-	public void setState(State state) {
-		if (state == State.ON_COOLDOWN)
-			cooldown = CreateConfig.parameters.extractorDelay.get();
-		if (state == State.WAITING_FOR_INVENTORY)
-			cooldown = CreateConfig.parameters.extractorInventoryScanDelay.get();
-		this.state = state;
-	}
-
-	@Override
-	public int tickCooldown() {
-		return cooldown--;
-	}
-
-	@Override
-	public BlockPos getInventoryPos() {
-		BlockState blockState = getBlockState();
-		Block block = blockState.getBlock();
-		if (!(block instanceof ExtractorBlock))
-			return null;
-		return getPos().offset(AttachedLogisiticalBlock.getBlockFacing(blockState));
-	}
-
-	@Override
-	public LazyOptional<IItemHandler> getInventory() {
-		return inventory;
-	}
-
-	@Override
-	public void setInventory(LazyOptional<IItemHandler> inventory) {
-		this.inventory = inventory;
+		return world.getEntitiesWithinAABBExcludingEntity(null, new AxisAlignedBB(getPos())).isEmpty();
 	}
 
 }

src/main/java/com/simibubi/create/modules/logistics/block/extractor/LinkedExtractorBlock.java

@@ -5,7 +5,7 @@ import org.apache.commons.lang3.tuple.Pair;
 import com.simibubi.create.AllBlocks;
 import com.simibubi.create.foundation.utility.AngleHelper;
 import com.simibubi.create.foundation.utility.VecHelper;
-import com.simibubi.create.modules.logistics.block.belts.AttachedLogisiticalBlock;
+import com.simibubi.create.modules.logistics.block.belts.AttachedLogisticalBlock;
 
 import net.minecraft.block.BlockState;
 import net.minecraft.tileentity.TileEntity;
@@ -48,8 +48,8 @@ public class LinkedExtractorBlock extends ExtractorBlock {
 		Vec3d secondDownward = VecHelper.voxelSpace(6f, 2f, 11.5f);
 
 		float yRot = AngleHelper.horizontalAngle(state.get(ExtractorBlock.HORIZONTAL_FACING));
-		if (AttachedLogisiticalBlock.isVertical(state)) {
-			Boolean up = state.get(AttachedLogisiticalBlock.UPWARD);
+		if (AttachedLogisticalBlock.isVertical(state)) {
+			Boolean up = state.get(AttachedLogisticalBlock.UPWARD);
 			first = up ? firstUpward : firstDownward;
 			second = up ? secondUpward : secondDownward;
 		}
@@ -60,7 +60,7 @@ public class LinkedExtractorBlock extends ExtractorBlock {
 	}
 
 	public static Vec3d getFrequencySlotOrientation(BlockState state) {
-		boolean vertical = AttachedLogisiticalBlock.isVertical(state);
+		boolean vertical = AttachedLogisticalBlock.isVertical(state);
 		float horizontalAngle = AngleHelper.horizontalAngle(state.get(ExtractorBlock.HORIZONTAL_FACING));
 
 		float xRot = vertical ? (state.get(UPWARD) ? 90 : 270) : 0;

src/main/java/com/simibubi/create/modules/logistics/block/extractor/LinkedExtractorTileEntity.java

@@ -8,11 +8,6 @@ import com.simibubi.create.AllTileEntities;
 import com.simibubi.create.foundation.behaviour.base.TileEntityBehaviour;
 import com.simibubi.create.foundation.behaviour.linked.LinkBehaviour;
 import com.simibubi.create.foundation.behaviour.linked.LinkBehaviour.SlotPositioning;
-import com.simibubi.create.modules.logistics.block.belts.AttachedLogisiticalBlock;
-
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockState;
-import net.minecraft.util.math.BlockPos;
 
 public class LinkedExtractorTileEntity extends ExtractorTileEntity {
 
@@ -38,33 +33,13 @@ public class LinkedExtractorTileEntity extends ExtractorTileEntity {
 		receivedSignal = powered;
 	}
 
-	@Override
-	public void initialize() {
-		super.initialize();
-		if (world.isBlockPowered(pos))
-			setState(State.LOCKED);
-		neighborChanged();
-	}
-
 	@Override
 	public void tick() {
 		super.tick();
 		if (world.isRemote)
 			return;
-		if (receivedSignal != getBlockState().get(POWERED)) {
-			setLocked(receivedSignal);
+		if (receivedSignal != getBlockState().get(POWERED))
 			world.setBlockState(pos, getBlockState().cycle(POWERED));
-			return;
-		}
-	}
-
-	@Override
-	public BlockPos getInventoryPos() {
-		BlockState blockState = getBlockState();
-		Block block = blockState.getBlock();
-		if (!(block instanceof ExtractorBlock))
-			return null;
-		return getPos().offset(AttachedLogisiticalBlock.getBlockFacing(blockState));
 	}
 	
 }

src/main/java/com/simibubi/create/modules/logistics/block/transposer/TransposerBlock.java

@@ -2,7 +2,7 @@ package com.simibubi.create.modules.logistics.block.transposer;
 
 import com.simibubi.create.AllBlocks;
 import com.simibubi.create.foundation.utility.AllShapes;
-import com.simibubi.create.modules.logistics.block.belts.AttachedLogisiticalBlock;
+import com.simibubi.create.modules.logistics.block.belts.AttachedLogisticalBlock;
 
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
@@ -19,7 +19,7 @@ import net.minecraft.world.IBlockReader;
 import net.minecraft.world.IWorldReader;
 import net.minecraft.world.World;
 
-public class TransposerBlock extends AttachedLogisiticalBlock {
+public class TransposerBlock extends AttachedLogisticalBlock {
 
 	public static BooleanProperty POWERED = BlockStateProperties.POWERED;
 
@@ -66,10 +66,17 @@ public class TransposerBlock extends AttachedLogisiticalBlock {
 	@Override
 	public void neighborChanged(BlockState state, World worldIn, BlockPos pos, Block blockIn, BlockPos fromPos,
 			boolean isMoving) {
-		super.neighborChanged(state, worldIn, pos, blockIn, fromPos, isMoving);
-
 		if (worldIn.isRemote)
 			return;
+
+		Direction blockFacing = getBlockFacing(state);
+		if (fromPos.equals(pos.offset(blockFacing)) || fromPos.equals(pos.offset(blockFacing.getOpposite()))) {
+			if (!isValidPosition(state, worldIn, pos)) {
+				worldIn.destroyBlock(pos, true);
+				return;
+			}
+		}
+
 		if (!reactsToRedstone())
 			return;
 

src/main/resources/assets/create/models/block/flex_crate.json

@@ -2,7 +2,8 @@
 	"parent": "block/block",
     "textures": {
         "particle": "create:block/flex_crate",
-        "flex_crate": "create:block/flex_crate"
+        "side": "create:block/flex_crate",
+        "top": "create:block/brass_casing_14"
     },
     "elements": [
         {
@@ -10,12 +11,12 @@
             "from": [ 1, 0, 1 ], 
             "to": [ 15, 14, 15 ], 
             "faces": {
-                "north": { "texture": "#flex_crate", "uv": [ 1, 1, 15, 15 ] },
-                "east": { "texture": "#flex_crate", "uv": [ 1, 1, 15, 15 ] },
-                "south": { "texture": "#flex_crate", "uv": [ 1, 1, 15, 15 ] },
-                "west": { "texture": "#flex_crate", "uv": [ 1, 1, 15, 15 ] },
-                "up": { "texture": "#flex_crate", "uv": [ 1, 1, 15, 15 ] },
-                "down": { "texture": "#flex_crate", "uv": [ 1, 1, 15, 15 ] }
+                "north": { "texture": "#side", "uv": [ 1, 1, 15, 15 ] },
+                "east": { "texture": "#side", "uv": [ 1, 1, 15, 15 ] },
+                "south": { "texture": "#side", "uv": [ 1, 1, 15, 15 ] },
+                "west": { "texture": "#side", "uv": [ 1, 1, 15, 15 ] },
+                "up": { "texture": "#top", "uv": [ 1, 1, 15, 15 ] },
+                "down": { "texture": "#top", "uv": [ 1, 1, 15, 15 ] }
             }
         }
     ]