Unity3D实现鼠标控制视角转动

前面，学了物体的移动功能，现在来学一下C#实现鼠标控制摄像机(视角)移动。

代码如下：

C#脚本(在Unity 5.5.1 下能运行)：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MouseView : MonoBehaviour {

public enum RotationAxes
{
MouseXAndY = 0,
MouseX = 1,
MouseY = 2
}

public RotationAxes m_axes = RotationAxes.MouseXAndY;
public float m_sensitivityX = 10f;
public float m_sensitivityY = 10f;

// 水平方向的 镜头转向
public float m_minimumX = -360f;
public float m_maximumX = 360f;
// 垂直方向的 镜头转向 (这里给个限度 最大仰角为45°)
public float m_minimumY = -45f;
public float m_maximumY = 45f;

float m_rotationY = 0f;

// Use this for initialization
void Start () {
// 防止 刚体影响 镜头旋转
if (GetComponent<Rigidbody>()) {
 GetComponent<Rigidbody> ().freezeRotation = true;
}
}

// Update is called once per frame
void Update () {
if (m_axes == RotationAxes.MouseXAndY) {
 float m_rotationX = transform.localEulerAngles.y + Input.GetAxis ("Mouse X") * m_sensitivityX;
 m_rotationY += Input.GetAxis ("Mouse Y") * m_sensitivityY;
 m_rotationY = Mathf.Clamp (m_rotationY, m_minimumY, m_maximumY);

transform.localEulerAngles = new Vector3 (-m_rotationY, m_rotationX, 0);
} else if (m_axes == RotationAxes.MouseX) {
 transform.Rotate (0, Input.GetAxis ("Mouse X") * m_sensitivityX, 0);
} else {
 m_rotationY += Input.GetAxis ("Mouse Y") * m_sensitivityY;
 m_rotationY = Mathf.Clamp (m_rotationY, m_minimumY, m_maximumY);

transform.localEulerAngles = new Vector3 (-m_rotationY, transform.localEulerAngles.y, 0);
}
}
}

调用时，只需把该脚本绑定给物体即可。这里是绑定摄像机，以摄像机为第一人称视角转动。

来源：https://blog.csdn.net/qq_33994566/article/details/79650913