implement ItemMixin

platforms/fabric/src/main/java/com/dfsek/terra/fabric/inventory/FabricItemHandle.java

@@ -18,7 +18,7 @@ public class FabricItemHandle implements ItemHandle {
     @Override
     public Item createItem(String data) {
         try {
-            return FabricAdapter.adapt(new ItemStackArgumentType().parse(new StringReader(data)).getItem());
+            return (Item) new ItemStackArgumentType().parse(new StringReader(data)).getItem();
         } catch(CommandSyntaxException e) {
             throw new IllegalArgumentException("Invalid item data \"" + data + "\"", e);
         }

platforms/fabric/src/main/java/com/dfsek/terra/fabric/inventory/FabricItemStack.java

@@ -25,7 +25,7 @@ public class FabricItemStack implements ItemStack {
 
     @Override
     public Item getType() {
-        return new FabricItem(delegate.getItem());
+        return (Item) delegate.getItem();
     }
 
     @Override

platforms/fabric/src/main/java/com/dfsek/terra/fabric/mixin/inventory/ItemMixin.java

@@ -0,0 +1,28 @@
+package com.dfsek.terra.fabric.mixin.inventory;
+
+import com.dfsek.terra.api.platform.inventory.ItemStack;
+import com.dfsek.terra.fabric.inventory.FabricItemStack;
+import net.minecraft.item.Item;
+import org.spongepowered.asm.mixin.Implements;
+import org.spongepowered.asm.mixin.Interface;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+@Mixin(Item.class)
+@Implements(@Interface(iface = com.dfsek.terra.api.platform.inventory.Item.class, prefix = "vw$"))
+public abstract class ItemMixin {
+    @Shadow
+    public abstract int getMaxDamage();
+
+    public Object vw$getHandle() {
+        return this;
+    }
+
+    public ItemStack vw$newItemStack(int amount) {
+        return new FabricItemStack(new net.minecraft.item.ItemStack((Item) (Object) this, amount));
+    }
+
+    public double vw$getMaxDurability() {
+        return getMaxDamage();
+    }
+}

platforms/fabric/src/main/java/com/dfsek/terra/fabric/world/FabricAdapter.java

@@ -6,7 +6,6 @@ import com.dfsek.terra.api.platform.block.BlockType;
 import com.dfsek.terra.api.platform.entity.EntityType;
 import com.dfsek.terra.api.platform.inventory.item.Enchantment;
 import com.dfsek.terra.fabric.inventory.FabricEnchantment;
-import com.dfsek.terra.fabric.inventory.FabricItem;
 import com.dfsek.terra.fabric.inventory.FabricItemStack;
 import com.dfsek.terra.fabric.world.block.FabricBlockData;
 import com.dfsek.terra.fabric.world.block.FabricBlockType;
@@ -22,7 +21,6 @@ import com.dfsek.terra.fabric.world.handles.world.FabricWorldHandle;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.entity.Entity;
-import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.state.property.Properties;
 import net.minecraft.util.math.BlockPos;
@@ -99,10 +97,6 @@ public final class FabricAdapter {
         return new FabricItemStack(itemStack);
     }
 
-    public static com.dfsek.terra.api.platform.inventory.Item adapt(Item item) {
-        return new FabricItem(item);
-    }
-
     public static Enchantment adapt(net.minecraft.enchantment.Enchantment enchantment) {
         return new FabricEnchantment(enchantment);
     }

platforms/fabric/src/main/resources/terra.mixins.json

@@ -8,6 +8,7 @@
     "entity.EntityMixin",
     "entity.PlayerEntityMixin",
     "entity.ServerCommandSourceMixin",
+    "inventory.ItemMixin",
     "world.ChunkRegionMixin",
     "world.ProtoChunkMixin",
     "world.WorldChunkMixin"