无法限制对象的旋转 Unity3D

Question

I have an object in my scene that move forward and rotate with input.GetAxis, and I want to limit its X rotation between -45 and 45 degree. So I tried the Clamp method but the object can't rotate anymore! is there something wrong in my code?

float Speed = 10f;

// Use this for initialization
void Start () {

}

// Update is called once per frame
void Update () {

    transform.Rotate(-Input.GetAxis("Vertical") * 2f, 0, -Input.GetAxis("Horizontal"));

    float rotationX = Mathf.Clamp(transform.rotation.x, -45.0f, 45.0f);
    transform.localEulerAngles = new Vector3(rotationX, transform.localEulerAngles.y, transform.localEulerAngles.z);
}

private void FixedUpdate()
{
    transform.position += transform.forward * Speed * Time.fixedDeltaTime;
}

Answer 1

就我个人而言，我不会尝试直接设置 localEulerAngles，我会将旋转重置为 Quaternion.Identity（无旋转）或另一个参考变换的旋转，然后在旋转更改时围绕所需轴使用 Transform.rotate rotationX 度

Answer 2

The main issue your having atm is transform.rotation is a Quaternion and not a vector3. Since Quaternions have a min/max value of -1/1 the vector3 X rotation can't ever be outside that range.

You probably wanted to do: float rotationX = Mathf.Clamp(transform.localEulerAngles.x, -45.0f, 45.0f);