Power enchantment not increasing damage correctly

[ScraM-Team]

Issue Description

Arrows fired from bows with the Power enchantment don't seem to do as much damage as they are supposed to. Zombies don't die instantly like they do in PC Minecraft when struck with a Power 1000 bow.

Steps to Reproduce the Issue

Give a player a Power 1000 bow bow.addEnchantment((new EnchantmentBowPower()).setLevel(1000)); Shoot a Zombie. It doesn't die.

I think there is at least one problem with this logic: ItemBow.java:62 damage += 0.25 * (bowDamage.getLevel() + 1);

I think it should be damage += damage * 0.25 * (bowDamage.getLevel() + 1);

per https://minecraft.gamepedia.com/Bow#Enchantments

OS and Versions

• Nukkit Version: https://github.com/Nukkit/Nukkit/commit/b04061b912ec16c4c9c753f2e475f6e2e9514402

• Java Version: 1.8.0_121

• Client Configuration:

Item	Value
Client Edition	Android
Client Version	1.2.3