verticalMovement = Input.GetAxis("Vertical") * Vector3.forward * movementSpeed;
分別獲取橫豎軸上的移動量×右或者前×速度;(就是妳的輸入對小球的影響)
Vector3 movement = horizontalMovement + verticalMovement;
把2個分量相加,算出總的
rigidbody.AddForce(movement, ForceMode.Force);
然後小球受到壹個大小方向為movement的力