Negative value with game:add_life and game:remove_life
Created by: Renkineko
The actual behavior is logical but unexpected : remove_life(-5) will add 5 HP to the hero, and add_life(-5) will sub 5 HP to the hero.
We could expect having the same effect for 0 and negative values, e.g. remove_life(-5) does nothing, with the possibility to display an error in the console if negative value is passed.