I am making my first mod, and I need help with one aspect of it. I need to the sword to have a certain potion effect on mobs when it attacks one. I have searched the internet and haven't found anything related to this. For Example, It gives a mob the slowness effect for, 10 seconds. If it helps the matter, the Unlocalized name of the Sword is "itemIcySword". If anyone has any idea how I can implement this, than please do tell me. I would really appreciate it.

I have a sword that gives potion effects.

 

Here is the class.

 

public class CursedSword extends ItemSword{

public CursedSword(ToolMaterial iron) {
	super(ToolMaterial.IRON);
	setCreativeTab(CreativeTabs.tabCombat);
}
public boolean onLeftClickEntity(ItemStack stack, EntityPlayer player, Entity entity)
    {
	if(Magic.get(null).getDouMana() >= 6){
		Magic.get(null).setDouMana(Magic.get(null).getDouMana() - 3);
	((EntityLivingBase) entity).addPotionEffect(new PotionEffect(20, 100, 3, true));
	}

        return false;
    }


}

 

I should ignore the parts about mana.

I dont think you have.

@knokko, Why do you pass in null in the Magic.get() method? You need to pass in a EntityPlayer object. (Hint: You got that as a parameter in the method)