Fix adventure backpack GUI closing on double-click merging item stacks in inventory

src/main/java/com/darkona/adventurebackpack/inventory/ContainerAdventure.java

@@ -58,7 +58,7 @@ public void detectAndSendChanges() {
             // check if parent item is gone
             ItemStack parentItem = inventory.getParentItem();
             if (parentItem != null) {
-                if (player.getCurrentEquippedItem() != parentItem) {
+                if (!ItemStack.areItemStacksEqual(player.getCurrentEquippedItem(), parentItem)) {
                     player.closeScreen();
                     return;
                 }

src/main/java/com/darkona/adventurebackpack/inventory/InventoryAdventure.java

@@ -80,9 +80,7 @@ public int getInventoryStackLimit() {
     }
 
     @Override
-    public void markDirty() {
-        saveToNBT(containerStack.stackTagCompound);
-    }
+    public void markDirty() {}
 
     @Override
     public boolean isUseableByPlayer(EntityPlayer player) {

src/main/java/com/darkona/adventurebackpack/item/ItemAdventureBackpack.java

@@ -194,10 +194,15 @@ private boolean placeBackpack(ItemStack stack, EntityPlayer player, World world,
             boolean from) {
         if (stack.stackSize == 0 || !player.canPlayerEdit(x, y, z, side, stack)) return false;
         if (!stack.hasTagCompound()) stack.setTagCompound(new NBTTagCompound());
+
         if (!stack.stackTagCompound.hasKey(TAG_TYPE)) {
             stack.stackTagCompound.setByte(TAG_TYPE, BackpackTypes.getMeta(BackpackTypes.STANDARD));
         }
 
+        if (!stack.stackTagCompound.hasKey(TAG_INVENTORY)) {
+            stack.stackTagCompound.setTag(TAG_INVENTORY, new NBTTagList());
+        }
+
         // world.spawnEntityInWorld(new EntityLightningBolt(world, x, y, z));
         BlockAdventureBackpack backpack = ModBlocks.blockBackpack;
 

src/main/java/com/darkona/adventurebackpack/util/BackpackUtils.java

@@ -105,6 +105,7 @@ private static void createWearableInventory(ItemStack stack) {
     public static ItemStack createBackpackStack(BackpackTypes type) {
         ItemStack backpackStack = new ItemStack(ModItems.adventureBackpack, 1, BackpackTypes.getMeta(type));
         setBackpackType(backpackStack, type);
+        createWearableInventory(backpackStack);
         return backpackStack;
     }