[1.19.2] Set ranged attack damage of bows and crossbows

[SoLegendary]

I'm trying to modify the damage of ranged weapons (bows and crossbows) without having to enchant them.

So far I've tried this, but it only modifies the left click melee damage, not the ranged damage dealt by firing them:

ItemStack cbowStack = new ItemStack(Items.CROSSBOW);
 
AttributeModifier mod = new AttributeModifier(UUID.randomUUID().toString(), 100.0D, AttributeModifier.Operation.ADDITION);

cbowStack.addAttributeModifier(Attributes.ATTACK_DAMAGE, mod, EquipmentSlot.MAINHAND);

evt.getEntity().setItemSlot(EquipmentSlot.MAINHAND, cbowStack);

I also don't want to modify any ammo since I'm planning to give these weapons to mobs (who I assume do not use ammo).

[warjort]

There is no attribute for damage with projectiles.

Look at for example at

BowItem.releaseUsing() and AbstractArrow.onHitEntity()

to understand how it works.

You can see the damage is a function of the baseDamage and the velocity (deltaMovement) of the arrow.

The baseDamage can be affected by the POWER_ARROWS (power) enchantment and the velocity is affected by whether the bow is fully charged at firing.

 

If I was going to try do what you are doing, I would create my own Attribute. You can look at ForgeMod for how to do it.

https://github.com/MinecraftForge/MinecraftForge/blob/ec3abdea1455fc8c4e0f440d77e2dc24f880a4a6/src/main/java/net/minecraftforge/common/ForgeMod.java#L150

That way it is easy to identify and doesn't conflict with whatever other random stuff other mods are doing.

 

You can use the EntityJoinLevel event to trap when an arrow gets fired (check it is a real creation and not just a load from disk).

Arrow Entity -> getOwner() -> getItemInHand() would tell you which weapon the projectile was fired from (you need to check it is not from a dispenser or something else)

Then you can do Arrow.setBaseDamage() in a similar way to how the power enchantment works.

 

Personally, I think just adding the enchantment would be easier. So I wouldn't try to do it this way. 🙂