protected function addAttackerModifiers(Entity $damager)
{
if ($damager->hasEffect(Effect::STRENGTH)) {
$this->setDamage($this->getDamage(self::MODIFIER_BASE) * 0.3 * ($damager->getEffect(Effect::STRENGTH)->getAmplifier() + 1), self::MODIFIER_STRENGTH);
}
if ($damager->hasEffect(Effect::WEAKNESS)) {
$this->setDamage(-($this->getDamage(self::MODIFIER_BASE) * 0.2 * ($damager->getEffect(Effect::WEAKNESS)->getAmplifier() + 1)), self::MODIFIER_WEAKNESS);
}
}