Initial implementation of inventory stuff, (read-)only for StorageMinecart sofar

src/main/java/net/minecraft/server/EntityMinecart.java

@@ -113,6 +113,12 @@ public class EntityMinecart extends Entity
         // CraftBukkit end
     }
 
+    // CraftBukkit start
+    public ItemStack[] getContents() {
+        return this.ak;
+    }
+    // CraftBukkit end
+
     public AxisAlignedBB d(Entity entity) {
         return entity.z;
     }

src/main/java/org/bukkit/craftbukkit/CraftItemStack.java

@@ -0,0 +1,61 @@
+package org.bukkit.craftbukkit;
+
+import org.bukkit.ItemStack;
+import org.bukkit.Material;
+
+public class CraftItemStack extends ItemStack {
+    protected net.minecraft.server.ItemStack item;
+
+    public CraftItemStack(net.minecraft.server.ItemStack item) {
+        super(item.c, item.a);
+        this.item = item;
+    }
+
+    /*
+     * Unsure if we have to syn before each of these calls the values in 'item'
+     * are all public.
+     */
+
+    @Override
+    public Material getType() {
+        super.setTypeID(item.c); // sync, needed?
+        return super.getType();
+    }
+
+    @Override
+    public int getTypeID() {
+        super.setTypeID(item.c); // sync, needed?
+        return item.c;
+    }
+
+    @Override
+    public void setTypeID(int type) {
+        super.setTypeID(item.c);
+        item.c = type;
+    }
+
+    @Override
+    public int getAmount() {
+        super.setAmount(item.a); // sync, needed?
+        return item.a;
+    }
+
+    @Override
+    public void setAmount(int amount) {
+        super.setAmount(amount);
+        item.a = amount;
+    }
+
+    @Override
+    public void setDamage(final byte damage) {
+        super.setDamage(damage);
+        item.d = damage;
+    }
+
+    @Override
+    public byte getDamage() {
+        super.setDamage((byte) item.d); // sync, needed?
+        return (byte) item.d;
+    }
+
+}

src/main/java/org/bukkit/craftbukkit/CraftStorageMinecart.java

@@ -1,6 +1,11 @@
 package org.bukkit.craftbukkit;
 
+import java.util.ArrayList;
+import java.util.List;
+
 import net.minecraft.server.EntityMinecart;
+
+import org.bukkit.ItemStack;
 import org.bukkit.StorageMinecart;
 
 /**
@@ -8,10 +13,33 @@ import org.bukkit.StorageMinecart;
  * 
  * @author sk89q
  */
-public class CraftStorageMinecart extends CraftMinecart
+public class CraftStorageMinecart extends CraftMinecart implements StorageMinecart {
-        implements StorageMinecart {
     public CraftStorageMinecart(CraftServer server, EntityMinecart entity) {
         super(server, entity);
     }
 
+    public int getSize() {
+        return minecart.c();
+    }
+
+    public String getName() {
+        return minecart.b();
+    }
+
+    public ItemStack getItem(int index) {
+        return new CraftItemStack(minecart.a(index));
+    }
+
+    public List<ItemStack> getContents() {
+        ArrayList<ItemStack> items = new ArrayList<ItemStack>();
+        for (net.minecraft.server.ItemStack item: minecart.getContents()) {
+            ItemStack i = null;
+            if (item != null) {
+                i = new CraftItemStack( item );
+            }
+            items.add(i);
+        }
+
+        return items;
+    }
 }