Unity全视角跟随鼠标右键转换视角实现——研究笔记

using UnityEngine;
using System.Collections;

public class CameraMove : MonoBehaviour 
{
    public Transform m_Player;
    public float m_RotaSpeed = 2;
    public float m_Slow = 5f;

    private bool m_isAnXia = false;
    private Vector3 m_xdPos;

    void Start () 
    {
        m_xdPos = this.transform.position - m_Player.position;
    }

    void Update () 
    {
        Move();
        Rote();
    }

    void Move()
    {
        this.transform.position = m_Player.position + m_xdPos;
    }

    void Rote()
    {
        if (Input.GetMouseButtonDown(1)) 
        {
            m_isAnXia = true;
        }
        if (Input.GetMouseButtonUp(1)) 
        {
            m_isAnXia = false;
        }
        if (m_isAnXia) 
        {
            this.transform.RotateAround(m_Player.position, Vector3.up, Input.GetAxis("Mouse X") * m_RotaSpeed);
            var pos = this.transform.position;
            var rota = this.transform.rotation;
            this.transform.RotateAround(m_Player.position, this.transform.right, Input.GetAxis("Mouse Y") * -m_RotaSpeed);
            var x = this.transform.eulerAngles.x;
            if (x < 10 || x > 80) 
            {
                this.transform.position = pos;
                this.transform.rotation = rota;
            }

            m_xdPos = this.transform.position - m_Player.position;
        }
    }
}