Fix NBT null crash

Author: DraViGen

gradle.properties

@@ -6,7 +6,7 @@ btw_version = 3.1.0
 yarn_mappings = 1.6.4+build.420
 loader_version = 0.14.19
 
-mod_version = 1.0.0
+mod_version = 1.0.0-beta
 maven_group = net.dravigen
 archives_base_name = bu_toolkit
 

src/main/java/net/dravigen/bu_toolkit/items/BuildingWand.java

@@ -50,6 +50,7 @@ public BuildingWand(int iITemID, EnumToolMaterial material, int durability, int
 
 	@Override
 	public void onCreated(ItemStack stack, World world, EntityPlayer player) {
+		stack.setTagCompound(new NBTTagCompound());
 		this.setMode(stack, 0);
 	}
 

src/main/java/net/dravigen/bu_toolkit/items/Trowel.java

@@ -29,6 +29,13 @@ public Trowel(int id, EnumToolMaterial material, int durability, int maxSize, St
 		this.setItemRightClickCooldown(5);
 	}
 
+	@Override
+	public void onCreated(ItemStack stack, World world, EntityPlayer player) {
+		super.onCreated(stack, world, player);
+		
+		stack.setTagCompound(new NBTTagCompound());
+	}
+	
 	@Override
 	public void onUpdate(ItemStack stack, World world, EntityPlayer player, int iInventorySlot,
 			boolean bIsHandHeldItem) {

src/main/java/net/dravigen/bu_toolkit/mixin/client/EntityClientPlayerMPMx.java

@@ -33,7 +33,9 @@ private void entityTick(CallbackInfo ci) {
 		Minecraft mc = this.mc;
 
 		if (stack != null && stack.getItem() instanceof CustomItemWithModes) {
-			stack.getTagCompound().setInteger("modeChange", stack.getTagCompound().getInteger("modeChange") - 1);
+			if (stack.getTagCompound() != null) {
+				stack.getTagCompound().setInteger("modeChange", stack.getTagCompound().getInteger("modeChange") - 1);
+			}
 
 			if (BU_Toolkit.modeSwitch.isPressed()) {
 				if (!isPressed) {