Extraordinary item handlers

- Cobwebs and Powdered Snow can now be attached to contraptions
- Fixed Storage Drawers not providing correct fill levels to Stockpile Switches
- Leaves are now considered transparent by encased fans
- Blocks can now be tagged `#create:movable_empty_collider` to support contraption movement even if their collision shape is empty

src/generated/resources/.cache/cache

@@ -5628,7 +5628,8 @@ ac265a674626e0e832330086fd18fe0be37fc327 data/create/recipes/weathered_copper_ti
 5942a571f79c40524bbf408775cf91de4715f2b6 data/create/recipes/weathered_copper_tile_stairs_from_weathered_copper_tiles_stonecutting.json
 2a2700b43614f86d3294726595cb28ed7dca4387 data/create/tags/blocks/brittle.json
 d99d5c67bdffff60789a19bd51a5c5267c75e0a4 data/create/tags/blocks/casing.json
-ecdd4e6acda027a01b41d6d2d431f9675cd29b93 data/create/tags/blocks/fan_transparent.json
+2b4c93e5a752ebf54217594766f30d8d60cb4343 data/create/tags/blocks/fan_transparent.json
+ee6d2b53d81f2bed492662b6c06f46c4f2b9ef9b data/create/tags/blocks/movable_empty_collider.json
 6e5d3b2123fbb00e7f439c091623619502551bca data/create/tags/blocks/non_movable.json
 10781e8cfcbb3486327aace3aa00e437fb44b331 data/create/tags/blocks/ore_override_stone.json
 760adb521c2e475a6414f97291f46c02d294fa74 data/create/tags/blocks/passive_boiler_heaters.json

src/generated/resources/data/create/tags/blocks/fan_transparent.json

@@ -6,6 +6,7 @@
     "create:sail_frame",
     "minecraft:iron_bars",
     "#minecraft:campfires",
-    "#minecraft:fences"
+    "#minecraft:fences",
+    "#minecraft:leaves"
   ]
 }

src/generated/resources/data/create/tags/blocks/movable_empty_collider.json

@@ -0,0 +1,8 @@
+{
+  "replace": false,
+  "values": [
+    "minecraft:cobweb",
+    "minecraft:powder_snow",
+    "#minecraft:fence_gates"
+  ]
+}

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

@@ -101,6 +101,7 @@ public class AllTags {
 		CASING,
 		FAN_TRANSPARENT,
 		NON_MOVABLE,
+		MOVABLE_EMPTY_COLLIDER,
 		ORE_OVERRIDE_STONE,
 		PASSIVE_BOILER_HEATERS,
 		SAFE_NBT,

src/main/java/com/simibubi/create/compat/Mods.java

@@ -13,7 +13,8 @@ import net.minecraftforge.fml.ModList;
 public enum Mods {
 	DYNAMICTREES,
 	TCONSTRUCT,
-	CURIOS;
+	CURIOS,
+	STORAGEDRAWERS;
 
 	/**
 	 * @return a boolean of whether the mod is loaded or not based on mod id

src/main/java/com/simibubi/create/compat/storageDrawers/StorageDrawers.java

@@ -0,0 +1,41 @@
+package com.simibubi.create.compat.storageDrawers;
+
+import com.simibubi.create.compat.Mods;
+import com.simibubi.create.foundation.tileEntity.behaviour.filtering.FilteringBehaviour;
+
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraftforge.items.IItemHandler;
+
+public class StorageDrawers {
+
+	public static boolean isDrawer(BlockEntity tile) {
+		return tile != null && Mods.STORAGEDRAWERS.asId()
+			.equals(tile.getType()
+				.getRegistryName()
+				.getNamespace());
+	}
+
+	public static float getTrueFillLevel(IItemHandler inv, FilteringBehaviour filtering) {
+		float occupied = 0;
+		float totalSpace = 0;
+		
+		for (int slot = 1; slot < inv.getSlots(); slot++) {
+			ItemStack stackInSlot = inv.getStackInSlot(slot);
+			int space = inv.getSlotLimit(slot);
+			int count = stackInSlot.getCount();
+			if (space == 0)
+				continue;
+
+			totalSpace += 1;
+			if (filtering.test(stackInSlot))
+				occupied += count * (1f / space);
+		}
+		
+		if (totalSpace == 0)
+			return 0;
+
+		return occupied / totalSpace;
+	}
+	
+}

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

@@ -46,7 +46,6 @@ import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.DiodeBlock;
 import net.minecraft.world.level.block.DoorBlock;
 import net.minecraft.world.level.block.FaceAttachedHorizontalDirectionalBlock;
-import net.minecraft.world.level.block.FenceGateBlock;
 import net.minecraft.world.level.block.FlowerPotBlock;
 import net.minecraft.world.level.block.GrindstoneBlock;
 import net.minecraft.world.level.block.HorizontalDirectionalBlock;
@@ -175,15 +174,13 @@ public class BlockMovementChecks {
 	private static boolean isMovementNecessaryFallback(BlockState state, Level world, BlockPos pos) {
 		if (isBrittle(state))
 			return true;
-		if (state.getBlock() instanceof FenceGateBlock)
+		if (!state.getMaterial()
-			return true;
-		if (state.getMaterial()
 			.isReplaceable())
-			return false;
-		if (state.getCollisionShape(world, pos)
-			.isEmpty())
-			return false;
 			return true;
+		if (!state.getCollisionShape(world, pos)
+			.isEmpty())
+			return true;
+		return AllBlockTags.MOVABLE_EMPTY_COLLIDER.matches(state);
 	}
 
 	private static boolean isMovementAllowedFallback(BlockState state, Level world, BlockPos pos) {

src/main/java/com/simibubi/create/content/logistics/block/redstone/StockpileSwitchTileEntity.java

@@ -2,6 +2,7 @@ package com.simibubi.create.content.logistics.block.redstone;
 
 import java.util.List;
 
+import com.simibubi.create.compat.storageDrawers.StorageDrawers;
 import com.simibubi.create.content.logistics.block.display.DisplayLinkBlock;
 import com.simibubi.create.foundation.tileEntity.SmartTileEntity;
 import com.simibubi.create.foundation.tileEntity.TileEntityBehaviour;
@@ -16,6 +17,7 @@ import net.minecraft.nbt.CompoundTag;
 import net.minecraft.util.Mth;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.entity.BlockEntityType;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.phys.Vec3;
@@ -95,10 +97,14 @@ public class StockpileSwitchTileEntity extends SmartTileEntity {
 
 		BlockPos target = worldPosition.relative(getBlockState().getOptionalValue(StockpileSwitchBlock.FACING)
 			.orElse(Direction.NORTH));
+		BlockEntity targetTile = level.getBlockEntity(target);
 
-		if (level.getBlockEntity(target) instanceof StockpileSwitchObservable observable) {
+		if (targetTile instanceof StockpileSwitchObservable observable) {
 			currentLevel = observable.getPercent() / 100f;
 		
+		} else if (StorageDrawers.isDrawer(targetTile) && observedInventory.hasInventory()) {
+			currentLevel = StorageDrawers.getTrueFillLevel(observedInventory.getInventory(), filtering);
+			
 		} else if (observedInventory.hasInventory() || observedTank.hasInventory()) {
 			if (observedInventory.hasInventory()) {
 				// Item inventory

src/main/java/com/simibubi/create/foundation/data/TagGen.java

@@ -74,10 +74,15 @@ public class TagGen {
 			.addTag(BlockTags.BEDS)
 			.addTag(BlockTags.DOORS);
 		
+		prov.tag(AllBlockTags.MOVABLE_EMPTY_COLLIDER.tag)
+			.add(Blocks.COBWEB, Blocks.POWDER_SNOW)
+			.addTag(BlockTags.FENCE_GATES);
+
 		prov.tag(AllBlockTags.FAN_TRANSPARENT.tag)
 			.add(Blocks.IRON_BARS)
 			.addTag(BlockTags.CAMPFIRES)
-			.addTag(BlockTags.FENCES);
+			.addTag(BlockTags.FENCES)
+			.addTag(BlockTags.LEAVES);
 
 		prov.tag(AllBlockTags.ORE_OVERRIDE_STONE.tag)
 			.addTag(BlockTags.STONE_ORE_REPLACEABLES);