Unity 中使用 UniTask 实现物体往复移动的方法

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UniTaskが入っていること前提になります。

[Header("片道の長さ")]
[Selializefield]private float _length = 3f;
[Header("速さ")]
[Selializefield]private float _speed = 2f;

private async UniTask PingPongMove()
{
    float time = 0;
    Vector3 firstDistance = transform.position;

    while(true)
    {
    time += _speed * Time.deltaTime;
    var offset = Mathf.PingPong(time, _length);
    var currentDistance = firstDistance.x + offset;
    transform.position = new(currentDistance, firstDistance.y, firstDistance.z);
    await UniTask.Yield(PlayerLoopTiming.Update, this.GetCancellationTokenOnDestroy());
    }  
}

何かを往復させたい時に使えるコード。
_speedには動く速さ、_lengthには往復時の片道の長さを入れます。
後はPingPongMove.Forget();を好きなところで呼び出しましょう。

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