Remove MultipartSlot

src/main/java/net/shadowfacts/simplemultipart/client/MultipartContainerBakedModel.java

@@ -30,7 +30,7 @@ public class MultipartContainerBakedModel implements BakedModel {
 		}
 		MultipartContainerBlockState containerState = (MultipartContainerBlockState)state;
 		// TODO: would manually building the list be more efficient?
-		return containerState.getParts().values().stream()
+		return containerState.getParts().stream()
 				.flatMap(partState -> {
 					Identifier partId = SimpleMultipart.MULTIPART.getId(partState.getMultipart());
 					String variant = BlockModels.propertyMapToString(partState.getEntries());

src/main/java/net/shadowfacts/simplemultipart/container/MultipartContainerBlock.java

@@ -12,12 +12,12 @@ import net.minecraft.world.BlockView;
 import net.minecraft.world.ExtendedBlockView;
 import net.minecraft.world.World;
 import net.shadowfacts.simplemultipart.client.util.RenderStateProvider;
-import net.shadowfacts.simplemultipart.multipart.MultipartSlot;
 import net.shadowfacts.simplemultipart.multipart.MultipartState;
 import net.shadowfacts.simplemultipart.util.MultipartHelper;
 import net.shadowfacts.simplemultipart.util.MultipartHitResult;
 
 import java.util.Map;
+import java.util.Set;
 
 /**
  * @author shadowfacts
@@ -30,14 +30,6 @@ public class MultipartContainerBlock extends Block implements BlockEntityProvide
 
 	@Override
 	public boolean activate(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, Direction side, float hitX, float hitY, float hitZ) {
-//		if (player.isSneaking()) {
-//			MultipartContainerBlockEntity container = (MultipartContainerBlockEntity)world.getBlockEntity(pos);
-//			System.out.println(container.getParts());
-//			return true;
-//		} else {
-//			return false;
-//		}
-
 		MultipartContainerBlockEntity container = (MultipartContainerBlockEntity)world.getBlockEntity(pos);
 		if (container == null) {
 			return false;
@@ -48,8 +40,7 @@ public class MultipartContainerBlock extends Block implements BlockEntityProvide
 			return false;
 		}
 
-		MultipartState partState = container.get(hit.partSlot);
+		return hit.partState.activate(container, player, hand);
-		return partState.activate(hit.partSlot, container, player, hand);
 	}
 
 	@Override
@@ -59,7 +50,7 @@ public class MultipartContainerBlock extends Block implements BlockEntityProvide
 			return state;
 		}
 
-		Map<MultipartSlot, MultipartState> parts = container.getParts();
+		Set<MultipartState> parts = container.getParts();
 		return new MultipartContainerBlockState(state, parts);
 	}
 
@@ -71,8 +62,8 @@ public class MultipartContainerBlock extends Block implements BlockEntityProvide
 		}
 
 		VoxelShape shape = null;
-		for (Map.Entry<MultipartSlot, MultipartState> e : container.getParts().entrySet()) {
+		for (MultipartState partState : container.getParts()) {
-			VoxelShape partShape = e.getValue().getBoundingShape(e.getKey(), container);
+			VoxelShape partShape = partState.getBoundingShape(container);
 			shape = shape == null ? partShape : VoxelShapes.union(shape, partShape);
 		}
 		return shape == null ? VoxelShapes.empty() : shape;

src/main/java/net/shadowfacts/simplemultipart/container/MultipartContainerBlockEntity.java

@@ -1,6 +1,7 @@
 package net.shadowfacts.simplemultipart.container;
 
-import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import net.fabricmc.fabric.api.util.NbtType;
 import net.fabricmc.fabric.block.entity.ClientSerializable;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
@@ -8,76 +9,66 @@ import net.minecraft.block.Blocks;
 import net.minecraft.block.entity.BlockEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.nbt.Tag;
 import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.shape.VoxelShape;
 import net.shadowfacts.simplemultipart.SimpleMultipart;
-import net.shadowfacts.simplemultipart.multipart.MultipartSlot;
 import net.shadowfacts.simplemultipart.multipart.MultipartState;
 import net.shadowfacts.simplemultipart.util.MultipartHelper;
+import net.shadowfacts.simplemultipart.util.ShapeUtils;
 
-import java.util.HashMap;
+import java.util.*;
-import java.util.List;
-import java.util.Map;
 
 /**
  * @author shadowfacts
  */
 public class MultipartContainerBlockEntity extends BlockEntity implements ClientSerializable {
 
-	private Map<MultipartSlot, MultipartState> parts = new HashMap<>();
+	private Set<MultipartState> parts = new HashSet<>();
 
 	public MultipartContainerBlockEntity() {
 		super(SimpleMultipart.containerBlockEntity);
 	}
 
-	public ImmutableMap<MultipartSlot, MultipartState> getParts() {
+	public ImmutableSet<MultipartState> getParts() {
-		return ImmutableMap.copyOf(parts);
+		return ImmutableSet.copyOf(parts);
 	}
 
-	public boolean hasPartInSlot(MultipartSlot slot) {
+	public boolean canInsert(MultipartState partState) {
-		return parts.containsKey(slot);
+		VoxelShape newShape = partState.getBoundingShape(null);
-	}
+		for (MultipartState existing : parts) {
-
+			VoxelShape existingShape = existing.getBoundingShape(this);
-	public boolean canInsert(MultipartState partState, MultipartSlot slot) {
+			if (ShapeUtils.intersect(newShape, existingShape)) {
-		if (hasPartInSlot(slot)) {
 				return false;
 			}
-
+		}
-		// TODO: check bounding box intersections
 
 		return true;
 	}
 
-	public void insert(MultipartState partState, MultipartSlot slot) {
+	public void insert(MultipartState partState) {
-		parts.put(slot, partState);
+		parts.add(partState);
 		markDirty();
 		world.scheduleBlockRender(pos);
 	}
 
-	public MultipartState get(MultipartSlot slot) {
+	public void remove(MultipartState partState) {
-		return parts.get(slot);
+		parts.remove(partState);
-	}
-
-	public void remove(MultipartSlot slot) {
-		parts.remove(slot);
 
 		if (parts.isEmpty()) {
 			world.setBlockState(pos, Blocks.AIR.getDefaultState());
 		}
 	}
 
-	public boolean breakPart(MultipartSlot slot) {
+	public boolean breakPart(MultipartState partState) {
-		MultipartState state = get(slot);
-		if (state == null) {
-			return false;
-		}
-
 		if (world instanceof ServerWorld) {
-			List<ItemStack> drops = MultipartHelper.getDroppedStacks(state, (ServerWorld)world, pos);
+			List<ItemStack> drops = MultipartHelper.getDroppedStacks(partState, (ServerWorld)world, pos);
 			drops.forEach(stack -> Block.dropStack(world, pos, stack));
 			// TODO: don't drop if player is creative
 		}
 
-		remove(slot);
+		remove(partState);
 
 		world.markDirty(pos, this);
 		world.scheduleBlockRender(pos);
@@ -87,48 +78,48 @@ public class MultipartContainerBlockEntity extends BlockEntity implements Client
 		return true;
 	}
 
-	private CompoundTag partsToTag(CompoundTag tag) {
+	private ListTag partsToTag() {
-		parts.forEach((slot, state) -> {
+		ListTag list = new ListTag();
+		parts.forEach(state -> {
 			if (state != null) {
 				CompoundTag partStateTag = MultipartHelper.serializeMultipartState(state);
-				tag.put(slot.name(), partStateTag);
+				list.add(partStateTag);
 			}
 		});
-		return tag;
+		return list;
 	}
 
-	private void partsFromTag(CompoundTag tag) {
+	private void partsFromTag(ListTag list) {
 		parts.clear();
-		for (MultipartSlot slot : MultipartSlot.values()) {
+		for (Tag tag : list) {
-			if (!(tag.containsKey(slot.name(), 10))) {
+			MultipartState state = MultipartHelper.deserializeMultipartState((CompoundTag)tag);
-				continue;
+			parts.add(state);
-			}
-			CompoundTag partStateTag = tag.getCompound(slot.name());
-			MultipartState state = MultipartHelper.deserializeMultipartState(partStateTag);
-			parts.put(slot, state);
 		}
 	}
 
 	@Override
 	public CompoundTag toTag(CompoundTag tag) {
-		partsToTag(tag);
+		tag.put("parts", partsToTag());
 		return super.toTag(tag);
 	}
 
 	@Override
 	public void fromTag(CompoundTag tag) {
 		super.fromTag(tag);
-		partsFromTag(tag);
+		ListTag list = tag.getList("parts", NbtType.COMPOUND);
+		partsFromTag(list);
 	}
 
 	@Override
 	public CompoundTag toClientTag(CompoundTag tag) {
-		return partsToTag(tag);
+		tag.put("parts", partsToTag());
+		return tag;
 	}
 
 	@Override
 	public void fromClientTag(CompoundTag tag) {
-		partsFromTag(tag);
+		ListTag list = tag.getList("parts", NbtType.COMPOUND);
+		partsFromTag(list);
 		world.scheduleBlockRender(pos);
 	}
 }

src/main/java/net/shadowfacts/simplemultipart/container/MultipartContainerBlockState.java

@@ -1,24 +1,24 @@
 package net.shadowfacts.simplemultipart.container;
 
 import net.minecraft.block.BlockState;
-import net.shadowfacts.simplemultipart.multipart.MultipartSlot;
 import net.shadowfacts.simplemultipart.multipart.MultipartState;
 
 import java.util.Map;
+import java.util.Set;
 
 /**
  * @author shadowfacts
  */
 public class MultipartContainerBlockState extends BlockState {
 
-	private Map<MultipartSlot, MultipartState> parts;
+	private Set<MultipartState> parts;
 
-	public MultipartContainerBlockState(BlockState delegate, Map<MultipartSlot, MultipartState> parts) {
+	public MultipartContainerBlockState(BlockState delegate, Set<MultipartState> parts) {
 		super(delegate.getBlock(), delegate.getEntries());
 		this.parts = parts;
 	}
 
-	public Map<MultipartSlot, MultipartState> getParts() {
+	public Set<MultipartState> getParts() {
 		return parts;
 	}
 }

src/main/java/net/shadowfacts/simplemultipart/container/MultipartContainerEventHandler.java

@@ -35,7 +35,7 @@ public class MultipartContainerEventHandler {
 			return ActionResult.FAILURE;
 		}
 
-		boolean success = container.breakPart(hit.partSlot);
+		boolean success = container.breakPart(hit.partState);
 		return success ? ActionResult.SUCCESS : ActionResult.FAILURE;
 	}
 

src/main/java/net/shadowfacts/simplemultipart/item/ItemMultipart.java

@@ -10,8 +10,8 @@ import net.minecraft.world.World;
 import net.shadowfacts.simplemultipart.SimpleMultipart;
 import net.shadowfacts.simplemultipart.container.MultipartContainerBlockEntity;
 import net.shadowfacts.simplemultipart.multipart.Multipart;
-import net.shadowfacts.simplemultipart.multipart.MultipartSlot;
 import net.shadowfacts.simplemultipart.multipart.MultipartState;
+import net.shadowfacts.simplemultipart.util.MultipartPlacementContext;
 
 /**
  * @author shadowfacts
@@ -36,21 +36,35 @@ public class ItemMultipart extends Item {
 			return ActionResult.FAILURE;
 		}
 
-		MultipartSlot slot = getSlotForPlacement(container, context);
+		MultipartPlacementContext partContext = new MultipartPlacementContext(container, context);
-		if (slot == null) {
+		MultipartState state = part.getPlacementState(partContext);
+
+		if (!container.canInsert(state)) {
+//			container.destroyIfEmpty();
 			return ActionResult.FAILURE;
 		}
 
-		MultipartState partState = part.getPlacementState(slot, container);
+		container.insert(state);
-		if (!container.canInsert(partState, slot)) {
-			return ActionResult.FAILURE;
-		}
-
-		container.insert(partState, slot);
 
 		context.getItemStack().addAmount(-1);
 
 		return ActionResult.SUCCESS;
+
+//		MultipartSlot slot = getSlotForPlacement(container, context);
+//		if (slot == null) {
+//			return ActionResult.FAILURE;
+//		}
+//
+//		MultipartState partState = part.getPlacementState(slot, container);
+//		if (!container.canInsert(partState, slot)) {
+//			return ActionResult.FAILURE;
+//		}
+//
+//		container.insert(partState, slot);
+//
+//		context.getItemStack().addAmount(-1);
+//
+//		return ActionResult.SUCCESS;
 	}
 
 	protected MultipartContainerBlockEntity getOrCreateContainer(World world, BlockPos pos) {
@@ -65,15 +79,15 @@ public class ItemMultipart extends Item {
 		}
 	}
 
-	protected MultipartSlot getSlotForPlacement(MultipartContainerBlockEntity container, ItemPlacementContext context) {
+//	protected MultipartSlot getSlotForPlacement(MultipartContainerBlockEntity container, ItemPlacementContext context) {
-		MultipartSlot slot = MultipartSlot.fromClickedSide(context.getFacing());
+//		MultipartSlot slot = MultipartSlot.fromClickedSide(context.getFacing());
-		if (part.isValidSlot(slot) && !container.hasPartInSlot(slot)) {
+//		if (part.isValidSlot(slot) && !container.hasPartInSlot(slot)) {
-			return slot;
+//			return slot;
-		}
+//		}
-		if (part.isValidSlot(MultipartSlot.CENTER) && !container.hasPartInSlot(MultipartSlot.CENTER)) {
+//		if (part.isValidSlot(MultipartSlot.CENTER) && !container.hasPartInSlot(MultipartSlot.CENTER)) {
-			return MultipartSlot.CENTER;
+//			return MultipartSlot.CENTER;
-		}
+//		}
-		return null;
+//		return null;
-	}
+//	}
 
 }

src/main/java/net/shadowfacts/simplemultipart/multipart/Multipart.java

@@ -15,6 +15,7 @@ import net.minecraft.world.loot.LootTables;
 import net.minecraft.world.loot.context.LootContext;
 import net.shadowfacts.simplemultipart.SimpleMultipart;
 import net.shadowfacts.simplemultipart.container.MultipartContainerBlockEntity;
+import net.shadowfacts.simplemultipart.util.MultipartPlacementContext;
 
 import java.util.List;
 
@@ -23,8 +24,6 @@ import java.util.List;
  */
 public abstract class Multipart {
 
-	public static final EnumProperty<MultipartSlot> SLOT = EnumProperty.create("slot", MultipartSlot.class);
-
 	private StateFactory<Multipart, MultipartState> stateFactory;
 	private MultipartState defaultState;
 
@@ -51,11 +50,7 @@ public abstract class Multipart {
 		return stateFactory;
 	}
 
-	public boolean isValidSlot(MultipartSlot slot) {
+	public MultipartState getPlacementState(MultipartPlacementContext context) {
-		return true;
-	}
-
-	public MultipartState getPlacementState(MultipartSlot slot, MultipartContainerBlockEntity container) {
 		return getDefaultState();
 	}
 
@@ -63,7 +58,7 @@ public abstract class Multipart {
 	 * Can be overridden, should only be called via {@link MultipartState#getStateForRendering}
 	 */
 	@Deprecated
-	public MultipartState getStateForRendering(MultipartState state, MultipartSlot slot, MultipartContainerBlockEntity container) {
+	public MultipartState getStateForRendering(MultipartState state, MultipartContainerBlockEntity container) {
 		return state;
 	}
 
@@ -71,7 +66,7 @@ public abstract class Multipart {
 	 * Can be overridden, should only be called via {@link MultipartState#getBoundingShape}
 	 */
 	@Deprecated
-	public abstract VoxelShape getBoundingShape(MultipartState state, MultipartSlot slot, MultipartContainerBlockEntity container);
+	public abstract VoxelShape getBoundingShape(/*@Nullable*/ MultipartState state, MultipartContainerBlockEntity container);
 
 	public Identifier getDropTableId() {
 		if (dropTableId == null) {
@@ -101,7 +96,7 @@ public abstract class Multipart {
 	 * Can be overridden, should only be called via {@link MultipartState#activate}
 	 */
 	@Deprecated
-	public boolean activate(MultipartState state, MultipartSlot slot, MultipartContainerBlockEntity container, PlayerEntity player, Hand hand) {
+	public boolean activate(MultipartState state, MultipartContainerBlockEntity container, PlayerEntity player, Hand hand) {
 		return false;
 	}
 

src/main/java/net/shadowfacts/simplemultipart/multipart/MultipartSlot.java

@@ -1,40 +0,0 @@
-package net.shadowfacts.simplemultipart.multipart;
-
-import net.minecraft.util.StringRepresentable;
-import net.minecraft.util.math.Direction;
-
-/**
- * @author shadowfacts
- */
-public enum MultipartSlot implements StringRepresentable  {
-	TOP,
-	BOTTOM,
-	NORTH,
-	SOUTH,
-	EAST,
-	WEST,
-	CENTER;
-
-	public static MultipartSlot fromClickedSide(Direction side) {
-		switch (side) {
-			case UP:
-				return BOTTOM;
-			case DOWN:
-				return TOP;
-			case NORTH:
-				return SOUTH;
-			case SOUTH:
-				return NORTH;
-			case EAST:
-				return WEST;
-			case WEST:
-				return EAST;
-		}
-		throw new RuntimeException("Unreachable: got direction outside of DUNSWE");
-	}
-
-	@Override
-	public String asString() {
-		return name().toLowerCase();
-	}
-}

src/main/java/net/shadowfacts/simplemultipart/multipart/MultipartState.java

@@ -25,14 +25,14 @@ public class MultipartState extends AbstractPropertyContainer<Multipart, Multipa
 		return owner;
 	}
 
-	public MultipartState getStateForRendering(MultipartSlot slot, MultipartContainerBlockEntity container) {
+	public MultipartState getStateForRendering(MultipartContainerBlockEntity container) {
 		//noinspection deprecation
-		return owner.getStateForRendering(this, slot, container);
+		return owner.getStateForRendering(this, container);
 	}
 
-	public VoxelShape getBoundingShape(MultipartSlot slot, MultipartContainerBlockEntity container) {
+	public VoxelShape getBoundingShape(/*@Nullable*/ MultipartContainerBlockEntity container) {
 		//noinspection deprecation
-		return owner.getBoundingShape(this, slot, container);
+		return owner.getBoundingShape(this, container);
 	}
 
 	public List<ItemStack> getDroppedStacks(LootContext.Builder builder) {
@@ -40,9 +40,9 @@ public class MultipartState extends AbstractPropertyContainer<Multipart, Multipa
 		return owner.getDroppedStacks(this, builder);
 	}
 
-	public boolean activate(MultipartSlot slot, MultipartContainerBlockEntity container, PlayerEntity player, Hand hand) {
+	public boolean activate(MultipartContainerBlockEntity container, PlayerEntity player, Hand hand) {
 		//noinspection deprecated
-		return owner.activate(this, slot, container, player, hand);
+		return owner.activate(this, container, player, hand);
 	}
 
 }

src/main/java/net/shadowfacts/simplemultipart/util/MultipartHelper.java

@@ -50,11 +50,11 @@ public class MultipartHelper {
 	}
 
 	public static MultipartHitResult rayTrace(MultipartContainerBlockEntity container, World world, BlockPos pos, Vec3d start, Vec3d end) {
-		return container.getParts().entrySet().stream()
+		return container.getParts().stream()
-				.map(e -> {
+				.map(partState -> {
-					VoxelShape shape = e.getValue().getBoundingShape(e.getKey(), container);
+					VoxelShape shape = partState.getBoundingShape(container);
 					HitResult result = shape.rayTrace(start, end, pos);
-					return result == null ? null : new MultipartHitResult(result, e.getKey());
+					return result == null ? null : new MultipartHitResult(result, partState);
 				})
 				.filter(Objects::nonNull)
 				.min(Comparator.comparingDouble(hit -> hit.pos.subtract(start).lengthSquared()))

src/main/java/net/shadowfacts/simplemultipart/util/MultipartHitResult.java

@@ -4,22 +4,22 @@ import net.minecraft.util.HitResult;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Direction;
 import net.minecraft.util.math.Vec3d;
-import net.shadowfacts.simplemultipart.multipart.MultipartSlot;
+import net.shadowfacts.simplemultipart.multipart.MultipartState;
 
 /**
  * @author shadowfacts
  */
 public class MultipartHitResult extends HitResult {
 
-	public MultipartSlot partSlot;
+	public MultipartState partState;
 
-	public MultipartHitResult(Vec3d pos, Direction side, BlockPos blockPos, MultipartSlot partSlot) {
+	public MultipartHitResult(Vec3d pos, Direction side, BlockPos blockPos, MultipartState partState) {
 		super(pos, side, blockPos);
-		this.partSlot = partSlot;
+		this.partState = partState;
 	}
 
-	public MultipartHitResult(HitResult result, MultipartSlot partSlot) {
+	public MultipartHitResult(HitResult result, MultipartState partState) {
-		this(result.pos, result.side, result.getBlockPos(), partSlot);
+		this(result.pos, result.side, result.getBlockPos(), partState);
 		if (result.type != Type.BLOCK) {
 			throw new IllegalArgumentException("Can't create a MultipartHitResult from a non BLOCK-type HitResult");
 		}
@@ -27,6 +27,6 @@ public class MultipartHitResult extends HitResult {
 
 	@Override
 	public String toString() {
-		return "HitResult{type=" + type + ", blockpos=" + getBlockPos() + ", f=" + side + ", pos=" + pos + ", partSlot=" + partSlot + '}';
+		return "HitResult{type=" + type + ", blockpos=" + getBlockPos() + ", f=" + side + ", pos=" + pos + ", partState=" + partState + '}';
 	}
 }

src/main/java/net/shadowfacts/simplemultipart/util/MultipartPlacementContext.java

@@ -0,0 +1,31 @@
+package net.shadowfacts.simplemultipart.util;
+
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.item.ItemStack;
+import net.minecraft.item.ItemUsageContext;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.shadowfacts.simplemultipart.container.MultipartContainerBlockEntity;
+
+/**
+ * @author shadowfacts
+ */
+public class MultipartPlacementContext extends ItemUsageContext {
+
+	private final MultipartContainerBlockEntity container;
+
+	public MultipartPlacementContext(MultipartContainerBlockEntity container, PlayerEntity player, ItemStack stack, BlockPos pos, Direction side, float hitX, float hitY, float hitZ) {
+		super(player, stack, pos, side, hitX, hitY, hitZ);
+		this.container = container;
+	}
+
+	public MultipartPlacementContext(MultipartContainerBlockEntity container, ItemPlacementContext context) {
+		this(container, context.getPlayer(), context.getItemStack(), context.getPos(), context.getFacing(), context.getHitX(), context.getHitY(), context.getHitZ());
+	}
+
+	public MultipartContainerBlockEntity getContainer() {
+		return container;
+	}
+
+}

src/main/java/net/shadowfacts/simplemultipart/util/ShapeUtils.java

@@ -0,0 +1,17 @@
+package net.shadowfacts.simplemultipart.util;
+
+import net.minecraft.util.BooleanBiFunction;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.util.shape.VoxelShapes;
+
+/**
+ * @author shadowfacts
+ */
+public class ShapeUtils {
+
+	public static boolean intersect(VoxelShape a, VoxelShape b) {
+		VoxelShape overlap = VoxelShapes.combine(a, b, BooleanBiFunction.AND);
+		return !overlap.isEmpty();
+	}
+
+}

src/test/java/net/shadowfacts/simplemultipart/test/TestMultipart.java

@@ -2,13 +2,15 @@ package net.shadowfacts.simplemultipart.test;
 
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.state.StateFactory;
+import net.minecraft.state.property.Properties;
 import net.minecraft.util.Hand;
+import net.minecraft.util.math.Direction;
 import net.minecraft.util.shape.VoxelShape;
 import net.minecraft.util.shape.VoxelShapes;
 import net.shadowfacts.simplemultipart.container.MultipartContainerBlockEntity;
 import net.shadowfacts.simplemultipart.multipart.Multipart;
-import net.shadowfacts.simplemultipart.multipart.MultipartSlot;
 import net.shadowfacts.simplemultipart.multipart.MultipartState;
+import net.shadowfacts.simplemultipart.util.MultipartPlacementContext;
 
 /**
  * @author shadowfacts
@@ -16,32 +18,29 @@ import net.shadowfacts.simplemultipart.multipart.MultipartState;
 public class TestMultipart extends Multipart {
 
 	public TestMultipart() {
-		setDefaultState(getDefaultState().with(SLOT, MultipartSlot.BOTTOM));
+		setDefaultState(getDefaultState().with(Properties.FACING, Direction.DOWN));
 	}
 
 	@Override
 	protected void appendProperties(StateFactory.Builder<Multipart, MultipartState> builder) {
 		super.appendProperties(builder);
-		builder.with(SLOT);
+		builder.with(Properties.FACING);
 	}
 
 	@Override
-	public boolean isValidSlot(MultipartSlot slot) {
+	public MultipartState getPlacementState(MultipartPlacementContext context) {
-		return slot != MultipartSlot.CENTER;
+		Direction hitSide = context.getFacing();
-	}
+		return getDefaultState().with(Properties.FACING, hitSide.getOpposite());
-
-	@Override
-	public MultipartState getPlacementState(MultipartSlot slot, MultipartContainerBlockEntity container) {
-		return getDefaultState().with(SLOT, slot);
 	}
 
 	@Override
 	@Deprecated
-	public VoxelShape getBoundingShape(MultipartState state, MultipartSlot slot, MultipartContainerBlockEntity container) {
+	public VoxelShape getBoundingShape(MultipartState state, MultipartContainerBlockEntity container) {
-		switch (slot) {
+		Direction side = state.get(Properties.FACING);
-			case TOP:
+		switch (side) {
+			case UP:
 				return VoxelShapes.cube(0, 15/16f, 0, 1, 1, 1);
-			case BOTTOM:
+			case DOWN:
 				return VoxelShapes.cube(0, 0, 0, 1, 1/16f, 1);
 			case NORTH:
 				return VoxelShapes.cube(0, 0, 0, 1, 1, 1/16f);
@@ -57,8 +56,10 @@ public class TestMultipart extends Multipart {
 
 	@Override
 	@Deprecated
-	public boolean activate(MultipartState state, MultipartSlot slot, MultipartContainerBlockEntity container, PlayerEntity player, Hand hand) {
+	public boolean activate(MultipartState state, MultipartContainerBlockEntity container, PlayerEntity player, Hand hand) {
-		System.out.println("part activated: " + slot);
+		Direction side = state.get(Properties.FACING);
+		System.out.println("part activated on " + side);
 		return true;
 	}
+
 }

src/test/resources/assets/multipart_test/multipartstates/test_part.json

@@ -4,11 +4,11 @@
 			"apply": { "model": "multipart_test:multipart/center" }
 		},
 		{
-			"when": { "slot": "bottom" },
+			"when": { "facing": "down" },
 			"apply": { "model": "multipart_test:multipart/bottom" }
 		},
 		{
-			"when": { "slot": "north" },
+			"when": { "facing": "north" },
 			"apply": { "model": "multipart_test:multipart/vertical" }
 		}
 	]

src/test/resources/assets/multipart_test/multipartstates/variants_test_part.json

@@ -1,11 +1,11 @@
 {
 	"variants": {
-		"slot=bottom": { "model": "multipart_test:multipart/bottom" },
+		"facing=down": { "model": "multipart_test:multipart/bottom" },
-		"slot=top": { "model": "multipart_test:multipart/bottom", "x": 180 },
+		"facing=up": { "model": "multipart_test:multipart/bottom", "x": 180 },
-		"slot=north": { "model": "multipart_test:multipart/vertical" },
+		"facing=north": { "model": "multipart_test:multipart/vertical" },
-		"slot=south": { "model": "multipart_test:multipart/vertical", "y": 180 },
+		"facing=south": { "model": "multipart_test:multipart/vertical", "y": 180 },
-		"slot=east": { "model": "multipart_test:multipart/vertical", "y": 90 },
+		"facing=east": { "model": "multipart_test:multipart/vertical", "y": 90 },
-		"slot=west": { "model": "multipart_test:multipart/vertical", "y": 270 },
+		"facing=west": { "model": "multipart_test:multipart/vertical", "y": 270 },
 		"inventory": { "model":  "multipart_test:multipart/vertical", "y": 180 }
 	}
 }