团结：绳索秋千3d角色开始跳

Question

我尝试统一创建一个绳索摆动（像虚拟点一样的摆锤）机械师。但是在挥杆的第一帧，我的角色突然跳来跳去，然后又像钟摆一样继续向前和向下移动。

void InitSwing(){
    lineLenght = (transform.position - virtualLinePoint).sqrMagnitude;}

    public void SwingLocomotion()
    {
        Vector3 testPos = transform.position + jMotor.moveDirection *Time.deltaTime;
        float newLenght = (testPos - virtualLinePoint).sqrMagnitude;
        if (newLenght != lineLenght)
        {
            testPos = virtualLinePoint + (testPos - virtualLinePoint).normalized * lineLenght;

        }
        transform.position = testPos;

Answer 1

是否可能是由于第一帧中的Time.deltaTime为0？因此，行jMotor.moveDirection *Time.deltaTime将返回0，而testPos将等于transform.position + 0