錯誤示范：

一開始把移動的代碼寫到update里去了，發現物體老是掉(總之移動非常不流暢，體驗感很差）

void Update(){Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);if (Physics.Raycast(ray, out RaycastHit hit, Mathf.Infinity, LayerMask.GetMask("Interactables"))){if (Input.GetMouseButton(0)){hit.transform.position=ScreenToWorldPos(Input.mousePosition);}}}public Vector3 ScreenToWorldPos(Vector3 screenPosition){Vector3 targetScreenPos = Camera.main.WorldToScreenPoint(depthReference.position);float depth = targetScreenPos.z;screenPosition.z = depth;Vector3 worldPosition = Camera.main.ScreenToWorldPoint(screenPosition);return worldPosition;}

修改：

把移動的代碼改到協程里更新就能流暢移動了

void Update(){Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);if (Physics.Raycast(ray, out RaycastHit hit, Mathf.Infinity, LayerMask.GetMask("Interactables"))){if (Input.GetMouseButtonDown(0)){StartCoroutine(Move(hit.collider.transform));}}}IEnumerator Move(Transform hitobj){while (true){if (Input.GetMouseButton(0) ){Vector3 targetPosition = ScreenToWorldPos(Input.mousePosition);hitobj.position = targetPosition;}yield return null;}}public Vector3 ScreenToWorldPos(Vector3 screenPosition){Vector3 targetScreenPos = Camera.main.WorldToScreenPoint(depthReference.position);float depth = targetScreenPos.z;screenPosition.z = depth;Vector3 worldPosition = Camera.main.ScreenToWorldPoint(screenPosition);return worldPosition;}

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問了一下gpt大概是這個原理，說白了就是鼠標輸入不是逐幀更新的，它一直在更新，update執行速度跟不上，協程的執行速度跟得上（但是我還是沒明白為啥協程比update快，就算update重新啟動，可是執行的代碼都是一樣的，要么就是因為update每次都要重新進行射線檢測拖慢了速度吧）