[Unity]범위내 적에게 데미지 주기

// Call a damage function on all objects caught in the
	// radius of an explosion.
	function ExplosionDamage(center: Vector3, radius: float) {
		var hitColliders = Physics.OverlapSphere(center, radius);
		
		for (var i = 0; i < hitColliders.Length; i++) {
			hitColliders[i].SendMessage("AddDamage");
		}
	}