Initial commit

Java/Microcraft/src/com/jdh/microcraft/item/ItemStack.java

@@ -0,0 +1,30 @@
+package com.jdh.microcraft.item;
+
+public class ItemStack {
+    public ItemInstance instance;
+    public int size;
+
+    public ItemStack(ItemStack stack) {
+        this(new ItemInstance(stack.instance), stack.size);
+    }
+
+    public ItemStack(Item item) {
+        this(new ItemInstance(item));
+    }
+
+    public ItemStack(Item item, int size) {
+        this(new ItemInstance(item), size);
+    }
+
+    public ItemStack(ItemInstance instance) {
+        this(instance, 1);
+    }
+
+    public ItemStack(ItemInstance instance, int size) {
+        assert(size > 0);
+        assert(size == 1 || instance.item.isStackable());
+
+        this.instance = instance;
+        this.size = size;
+    }
+}