void OnTriggerEnter2D(Collider2D coll)
{
Instantiate(HitEffect, coll.transform.position, Quaternion.identity);
Destroy(coll.gameObject);
if (--hp == 0)
{
Instantiate(expEffect, transform.position, Quaternion.identity);
Destroy(gameObject);
gameManager.EnemyDefeat();
}
}
