Hello,

 

i'm trying to replace all items with on id to another item, but i can't find a Item.onCreate, ItemStack.onCreate or a list with all items i can edit.

Is there anything i can use for it?

new ItemStack(Item, amount, metadata)

Yes, i know this class, but how can i override it?

That will not work because: Tools Using metadata to count the damage. All items that do not have uses or having a function like maps abd clocks can be on 1 id but that is not a good idea because you lose fast the watch about it.

 

    When you are using same ID for many items, what really determines the item is its metadata.

    When creating result ItemStack for your recipe, use this code for is. You can control the metadata required.

 

  GameRegistry.addRecipe(new ItemStack(<YourItemID>, <Quantity>, <Metadata>), ... );

 

  You should also check out the metadata tutorial on the main page if you haven't yet.