The durability of my custom Item goes down only for a second then goes back to where it was before I clicked. I'd really appreciate if someone can point me in the right direction to get this working.

    @Override
    public ActionResult<ItemStack> use(World world, PlayerEntity playerEntity, Hand hand) {
        ItemStack stack = playerEntity.getItemInHand(hand);
        if (!world.isClientSide) {
            ItemStack newStack = new ItemStack(stack.getItem());
            newStack.setDamageValue(stack.getDamageValue() + 1);
            return ActionResult.success(newStack);
        }
        else
            return super.use(world, playerEntity, hand);
    }

Edited June 21, 20214 yr by RCKraken

You never put the new ItemStack into hand of the player

Edited June 21, 20214 yr by Luis_ST

you should just apply damage to the current stack instead of creating a new stack (at least the way you are doing it) because you will lose other settings, like enchantments

Okay, so

7 hours ago, Luis_ST said:

You never put the new ItemStack into hand of the player

doesn't 

return ActionResult.success(stack);

give the player's hand the new itemstack?

Also,

5 hours ago, lupicus said:

you should just apply damage to the current stack instead of creating a new stack (at least the way you are doing it) because you will lose other settings, like enchantments

This is my new code:

    @Override
    public ActionResult<ItemStack> use(World world, PlayerEntity playerEntity, Hand hand) {
        if (!world.isClientSide) {
            ItemStack stack = playerEntity.getItemInHand(hand);
            stack.setDamageValue(stack.getDamageValue() + 1);
            return ActionResult.success(stack);
        }
        else
            return super.use(world, playerEntity, hand);
    }

This still does not work. I can see that ActionResult.success(stack) does get run, because of the in game animation, but the durability doesn't change.

20 minutes ago, RCKraken said:

This still does not work. I can see that ActionResult.success(stack) does get run, because of the in game animation, but the durability doesn't change.

playerEntity.getItemInHand(hand).setDamageValue(playerEntity.getItemInHand(hand).getDamageValue() + 1);

this is the best solution for your problem

The new code you posted works, but you are probably in creative mode which restores item damage.

5 hours ago, RCKraken said:

doesn't 

return ActionResult.success(stack);

give the player's hand the new itemstack?

No. Compare and contrast:

14 hours ago, RCKraken said:

ItemStack newStack = new ItemStack(stack.getItem()); //Creates a new stack

5 hours ago, RCKraken said:

ItemStack stack = playerEntity.getItemInHand(hand); //Does not create a new stack

 

 

5 hours ago, Luis_ST said:

playerEntity.getItemInHand(hand).setDamageValue(playerEntity.getItemInHand(hand).getDamageValue() + 1);

this is the best solution for your problem

the only way in which this code differs from his, which is storing the ItemInHand in a local variable, is that this is less readable. as Lupicus said, his code works, he's probably just in creative mode.

creative mode cancels any attempts at damaging items when using them

Edited June 21, 20214 yr by kiou.23

So just for clarification, in case anyone has the same problem, if you're trying to damage an item on right click in creative mode, it will go down to whatever you set it to and then bounce right back, but has completely normal behavior in survival. I am beyond embarrassed that I spent 2 days on this lol. Thanks everyone!