void OnCollisionEnter2D(Collision2D collision2d) { if (this.invincibilityEndTime <= Time.time) { EnemyBullet enemyBullet = collision2d.rigidbody.GetComponent <EnemyBullet>(); if (enemyBullet) { enemyBullet.HandleCollisionWithPlayer(this); } this.SustainDamage(1); } }