void UseSkill(Button button, SkillModel skill)
{
//don't do anything when there is no skill or PP are 0
if (skill == null || skill.CurrentPP <= 0)
{
return;
}
//call it in fight manager
fightManager.UseSkill(skill);
//change PP in text
button.GetComponentInChildren <Text>().text = skill.GetButtonName();
}