【Unity】Unity3D控制Camera移动

using UnityEngine;

public class CameraController : MonoBehaviour
{
    //前后左右：WASD，基于世界坐标
    //上下：鼠标滚轮
    //旋转：鼠标点击拖拽
    public float speed = 10000;//键盘操控移动速度
    public float mouseSpeed = 5000;//鼠标滚轮移动速度
    private float xRotation;
    private float yRotation;
    public int yRotationMinLimit = -20;//控制旋转范围
    public int yRotationMaxLimit = 80;
    private float xRotationSpeed = 80;//控制旋转速度
    private float yRotationSpeed = 80;
    private Camera mainCamera;

    private void Start()
    {
        mainCamera = GetComponent<Camera>();
    }
    void Update()
    {
        CameraRotation();//旋转模块
        CameraMove();//移动模块：WASD、滚轮
    }
    void CameraRotation()
    {
        float MouseX = Input.GetAxis("Mouse X");
        float MouseY = Input.GetAxis("Mouse Y");
        if (Input.GetMouseButton(0))
        {
            xRotation -= MouseX * xRotationSpeed * 0.02f;
            yRotation += MouseY * yRotationSpeed * 0.02f;
            yRotation = ClampValue(yRotation, yRotationMinLimit, yRotationMaxLimit);
            Quaternion rotation = Quaternion.Euler(-yRotation, -xRotation, 0);
            transform.rotation = rotation;
        }
    }
    float ClampValue(float value, float min, float max)//控制旋转的角度
    {
        if (value < -360)
            value += 360;
        if (value > 360)
            value -= 360;
        return Mathf.Clamp(value, min, max);//限制value的值在min和max之间， 如果value小于min，返回min。 如果value大于max，返回max，否则返回value
    }
   
    public void CameraMove()
    {
        float h = Input.GetAxis("Horizontal");
        float v = Input.GetAxis("Vertical");
        float mouse = Input.GetAxis("Mouse ScrollWheel");
        transform.Translate(new Vector3(h * speed * 3, mouse * mouseSpeed * 50, v * speed * 3) * Time.deltaTime, Space.World);
    }
}