Unity的學習筆記（鼠標移動控制視角移動）

using UnityEngine;

public class MouseLook : MonoBehaviour {

    public enum RotationAxes { MouseXAndY = 0, MouseX = 1, MouseY = 2 } //定義一個枚舉，移動xy，或者只是移動x，或者y
    public RotationAxes axes = RotationAxes.MouseXAndY;                 //聲明一個枚舉變量，方便在外面修改移動模式
    public float sensitivityX = 15f;                                    //定義一個移動速度
    public float sensitivityY = 15f;

    public float minimumY = -60f;       //定義俯視最低值，建議這個值，要不然會轉過頭
    public float maximumY = 60f;        //定義俯視最高值，建議這個值，要不然會轉過頭

    float rotationY = 0f;               //存儲實際轉動的Y值

    void Start()
    {

    }
    void Update ()
    {
        switch (axes)               //判斷用戶是用那種旋轉方式
        {
            case RotationAxes.MouseXAndY:
                float rotationX = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * sensitivityX; 

                rotationY += Input.GetAxis("Mouse Y") * sensitivityY; //
                rotationY = Mathf.Clamp(rotationY, minimumY, maximumY);

                transform.localEulerAngles = new Vector3(-rotationY, rotationX, 0);
                break;
            case RotationAxes.MouseX:
                transform.Rotate(0, Input.GetAxis("Mouse X") * sensitivityX, 0);
                break;
            case RotationAxes.MouseY:
                rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
                rotationY = Mathf.Clamp(rotationY, minimumY, maximumY);

                transform.localEulerAngles = new Vector3(-rotationY, transform.localEulerAngles.y, 0);
                break;
            default:
                break;
        }
    }
}