How to change attribute of item stack? 1.12.2

[AntonBespoiasov 0]

I want to make sword that increases and decreases its attack damage. To do that I use attributes of item stack. To change attack damage I need to change amount of attribute generic.attackDamage. How can I do that in hitEntity method of ItemStack?

Edited November 11 by AntonBespoiasov

[diesieben07 6684]

You need to store whatever data you need in the ItemStack. Either through raw NBT (ItemStack#getTag and friends, make sure to include your ModID in your keys to avoid conflicts) or using a capability.

Then you can override IForgeItem#getAttributeModifiers(EquipmentSlotType, ItemStack), get the data from the stack and return the appropraite modifiers. To then change the modifiers, you just have to change the data in the ItemStack.

[AntonBespoiasov 0]

On ‎11‎/‎6‎/‎2019 at 11:32 AM, diesieben07 said:

You need to store whatever data you need in the ItemStack. Either through raw NBT (ItemStack#getTag and friends, make sure to include your ModID in your keys to avoid conflicts) or using a capability.

Then you can override IForgeItem#getAttributeModifiers(EquipmentSlotType, ItemStack), get the data from the stack and return the appropraite modifiers. To then change the modifiers, you just have to change the data in the ItemStack.

 

How can I override IForgeItem#getAttributeModifiers(EquipmentSlotType, ItemStack) if Minecraft will still return common ItemStack. And I didn't find IForgeItem in Forge with C+SHIFT+H.

Edited November 13 by AntonBespoiasov

[Draco18s 2093]

52 minutes ago, AntonBespoiasov said:

And I didn't find IForgeItem in Forge with C+SHIFT+H.

Its what Forge does in 1.14 instead of the /* === FORGE START === */ chunks.

[diesieben07 6684]

In 1.12.2 it's just a method of Item.