public void Spawn(Sprite[] effect, Vector2 position, Vector2 velocity, int depthOffset = 0)
{
sprite.frames = effect;
// sprite expects a valid frame number, length is the last frame + 1.
sprite.returnTo = effect.Length - 1;
sprite.Play();
sprite.depthOffset = depthOffset;
this.position = position;
sprite.transform.position = new Vector3(
Mathf.Round(this.position.x * S.SIZE),
Mathf.Round(this.position.y * S.SIZE)
);
this.velocity = velocity;
timer = new FrameTimer(effect.Length * AS.FRAME_DURATION);
timer.Start();
active = true;
sprite.Show();
}