public boolean mobCollision(int xa, int ya){
		Mob m = dungeon.getMob(xa, ya, this);
		if(m != null){
			if(this.knockback > 0) m.knockback = this.knockback / 2;
			else m.knockback = 2f;
			m.knockDir = dir;
			return true;
		}
		return false;
	}