public void ReceiveDamage(int damageReceived, bool friendlyFire = false)
{
_hitpoints -= damageReceived;
_damageShowTimeout = 0.0f;
_showDamageBar = !friendlyFire;
_damageIndicatorBar.Damage(damageReceived);
// Excerpt from https://docs.unity3d.com/Manual/ExecutionOrder.html
//
// "FixedUpdate: FixedUpdate is often called more frequently than Update.
// "It can be called multiple times per frame, if the frame rate is low and it may not be called between frames at
// "all if the frame rate is high. All physics calculations and updates occur immediately after FixedUpdate."
//
// Collision handling is happening after FixedUpdate, which in turn can be called multiple times per frame.
// Destroy only marks object for destroy, which will happen only in the next frame.
// So to prevent entering the condition multiple times, we use a boolean flag.
if (_hitpoints <= 0 && !_isDestroying)
{
_isDestroying = true;
if (!friendlyFire)
{
if (this is EnemyWeak)
{
_app.Score += GlobalConstants.EnemyWeakScore;
}
if (this is EnemyMedium)
{
_app.Score += GlobalConstants.EnemyMediumScore;
}
if (this is EnemyHeavy)
{
_app.Score += GlobalConstants.EnemyHeavyScore;
}
_app.ScoreCount.text = _app.Score.ToString();
}
var explosion = Instantiate(DeathAnimation, new Vector3(RigidbodyComponent.position.x, RigidbodyComponent.position.y, -1.0f), Quaternion.identity);
var ps = explosion.GetComponent <ParticleSystem>().main;
ParticleSystem.MinMaxGradient g = new ParticleSystem.MinMaxGradient(_originalColor);
ps.startColor = g;
Destroy(explosion, 2.0f);
Destroy(_damageIndicatorBar.gameObject);
Destroy(gameObject);
}
}