如何在鼠标外观脚本中停止滚动旋转

Question

我在Unity3D中使用FPS，我只想要俯仰和偏航。在一些移动之后，我的鼠标外观脚本开始围绕z轴旋转（即ROLL）。如何阻止这种情况？

这是我用于鼠标外观的脚本。

using UnityEngine;
using System.Collections;
public class MouseLooking : MonoBehaviour
{
    float sensitivityX = 10f;
    float sensitivityY = 10f;
    public float minimumX = -360;
    public float maximumX = 360;
    public float minimumY = -60;
    public float maximumY = 60;
    public float delayMouse = 3;
    public float noiseX = 0.1f;
    public float noiseY = 0.1f;
    public bool Noise;
    private float rotationX = 0;
    private float rotationY = 0;
    private float rotationXtemp = 0;
    private float rotationYtemp = 0;
    private Quaternion originalRotation;
    private float noisedeltaX;
    private float noisedeltaY;
    private float stunY;
    private float breathHolderValtarget = 1;
    private float breathHolderVal = 1;
    private TouchScreenVal touch;

    void Start ()
    {
            if (rigidbody)
                    rigidbody.freezeRotation = true;
            originalRotation = transform.localRotation;
            sensitivityX = sensitivityY = 10;
            touch = new TouchScreenVal (new Rect (0, 0, Screen.width, Screen.height));
    }

    void Update ()
    {
            sensitivityY = sensitivityX;
            //      Screen.lockCursor = true;
            stunY += (0 - stunY) / 20f;
            if (Noise) {
                    noisedeltaX += ((((Mathf.Cos (Time.time) * Random.Range (-10, 10) / 5f) * noiseX) - noisedeltaX) / 100);
                    noisedeltaY += ((((Mathf.Sin (Time.time) * Random.Range (-10, 10) / 5f) * noiseY) - noisedeltaY) / 100);
            } else {
                    noisedeltaX = 0;
                    noisedeltaY = 0;
            }
            #if UNITY_EDITOR
            rotationXtemp += (Input.GetAxis ("Mouse X") * sensitivityX) + (noisedeltaX * breathHolderVal);
            rotationYtemp += (Input.GetAxis ("Mouse Y") * sensitivityY) + (noisedeltaY * breathHolderVal);
            rotationX += (rotationXtemp - rotationX) / delayMouse;
            rotationY += (rotationYtemp - rotationY) / delayMouse;
            #else
    if (Constants.isGameOver == false) {
        int  count = Input.touchCount;

        if (Input.touchCount > 0) {
            for(int i =0 ; i< count ; i++)
            {

                Touch touch1 = Input.GetTouch (i);
                if ((touch1.phase == TouchPhase.Moved )  || touch1.phase == TouchPhase.Stationary) {
                    rotationX = rotationXtemp + ( Input.GetTouch (i).deltaPosition.x * sensitivityX* Time.deltaTime) + (noisedeltaX * breathHolderVal);
                    rotationY = rotationYtemp + ( Input.GetTouch(i).deltaPosition.y * sensitivityY* Time.deltaTime) + (noisedeltaY * breathHolderVal);
       //                       rotationX = rotationXtemp + (touch.OnDragDirection(true).x * sensitivityX * Time.deltaTime) + (noisedeltaX * breathHolderVal);
      //                        rotationY = rotationYtemp + (-touch.OnDragDirection(true).y * sensitivityY * Time.deltaTime) + (noisedeltaY * breathHolderVal);

                }
            }


        }
        else
        {
            rotationX = rotationXtemp + (touch.OnDragDirection(true).x * sensitivityX * Time.deltaTime) + (noisedeltaX * breathHolderVal);
            rotationY = rotationYtemp + (-touch.OnDragDirection(true).y * sensitivityY * Time.deltaTime) + (noisedeltaY * breathHolderVal);
        }

    }

            #endif
            if (rotationX >= 360) {
                    rotationX = 0;
                    rotationXtemp = 0;
            }
            if (rotationX <= -360) {
                    rotationX = 0;
                    rotationXtemp = 0;
            }
            rotationX = ClampAngle (rotationX, minimumX, maximumX);
            rotationY = ClampAngle (rotationY, minimumY, maximumY);
            rotationYtemp = ClampAngle (rotationYtemp, minimumY, maximumY);

            Quaternion xQuaternion = Quaternion.AngleAxis (rotationX, Vector3.up);
            Quaternion yQuaternion = Quaternion.AngleAxis (rotationY + stunY, Vector3.left);
            transform.localRotation = originalRotation * xQuaternion * yQuaternion;
            breathHolderVal += (breathHolderValtarget - breathHolderVal) / 10;  
            #if !UNITY_EDITOR
    rotationXtemp = rotationX;
    rotationYtemp = rotationY;
            #endif
    }
    public void Holdbreath (float val)
    {
            breathHolderValtarget = val;
    }
    public void Stun (float val)
    {
            stunY = val;
    }
    static float ClampAngle (float angle, float min, float max)
    {
            if (angle < -360.0f)
                    angle += 360.0f;
            if (angle > 360.0f)
                    angle -= 360.0f;
            return Mathf.Clamp (angle, min, max);
    }
}

Answer 1

不能使用浮点来存储x和y旋转，需要将其全部存储在四元数中。因此，当您从鼠标输入进行更新时，请将其直接添加到四元数中。

例如，请参见不带Euler角度的四元数旋转。