public void OnPlayAttack(object[] all_params)
{
int unit_id = (int)all_params[0];
int target_unit_id = (int)all_params[1];
HeroUnit unit = GetHeroUnit(unit_id);
BaseUnit target = GetUnit(target_unit_id);
if (unit != null && target != null)
{
unit.PlayAttack(target);
}
}