//把下面的代码挂在摄像机中

//摄像机跟随的主角物体

public Transform target;

//摄像机距离模型的默认距离

public float distance = 20.0f;

//鼠标在x轴和y轴方向移动的速度

float x;

float y;
//鼠标在x和y轴方向移动的速度
float xSpeed = 250.0f;
float ySpeed = 120.0f;

void Start()
{
	

	if (gameObject.GetComponent<Rigidbody>() != null)
	{
		gameObject.GetComponent<Rigidbody>().freezeRotation = true;
	}
	

}
void LateUpdate()
{
	if (target)
	{
		//我的分析：1.根据垂直方向的增减量修改摄像机距离参照物的距离
		distance += Input.GetAxis("Vertical");
		//根据鼠标移动修改摄像机的角度
		x += Input.GetAxis("Mouse X") * xSpeed * 0.02f;
		y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02f;
		
		Quaternion rotation = Quaternion.Euler(y, x, 0);
		
		Vector3 position = rotation * new Vector3(0.0f, 0.0f, -distance) + target.position;
		
		//设置摄像机的位置与旋转
		transform.rotation = rotation;
		transform.position = position;
	}
}



void Update()
{

}

}

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()) {
GetComponent ().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。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。
时间： 2019-02-24

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()) {        GetComponent ().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。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持华域联盟。

镜头拉近拉远的代码(无限拉远拉近)
代码如下：
if( Input.GetAxis("Mouse ScrollWheel") != 0 )
{
this.gameObject.transform.Translate(new Vector3(0,0,Input.GetAxis("Mouse ScrollWheel")*Time.deltaTime*500));
}
上述代码放在Update ()函数中，其中gameObject是摄像机或者物体对象，500是可以调节的参数。方法非常简单。
上述方法虽然能实现，但是太简单下面来个完整代码如下(只要把这个脚本绑定到相机上就OK)；
实现：右键转动视角和镜头拉伸(拉动有范围)
/// 
/// Mouse orbit.
/// This script use to control a main camera
/// 
using UnityEngine;
using System.Collections;
public class MouseOrbit : MonoBehaviour {
[HideInInspector]
public GameObject target; //a target look at
public float xSpeed; //speed pan x
public float ySpeed; //speed pan y
public float yMinLimit; //y min limit
public float yMaxLimit; //y max limit
public float scrollSpeed; //scroll speed
public float zoomMin;  //zoom min
public float zoomMax; //zoom max
//Private variable
private float distance;
private float distanceLerp;
private Vector3 position;
private bool isActivated;
private float x;
private float y;
private bool setupCamera;
// Use this for initialization
void Start () {
//Warning when not found target
if(target == null)
{
target = GameObject.FindGameObjectWithTag("Player");
if(target == null)
{
Debug.LogWarning("Don't found player tag please change player tag to Player");
}
}
//Setup Pos
Vector3 angles = transform.eulerAngles;
x = angles.y;
y = angles.x;
CalDistance();
}
void LateUpdate () {
ScrollMouse();
RotateCamera();
}
//Roate camera method
void RotateCamera()
{
if (Input.GetMouseButtonDown(1)){
isActivated = true;
}
// if mouse button is let UP then stop rotating camera
if (Input.GetMouseButtonUp(1))
{
isActivated = false;
}
if (target && isActivated) {
y -= Input.GetAxis("Mouse Y") * ySpeed;
x += Input.GetAxis("Mouse X") * xSpeed;
y = ClampAngle(y, yMinLimit, yMaxLimit);
Quaternion rotation = Quaternion.Euler(y, x, 0);
Vector3 calPos = new Vector3(0, 0, -distanceLerp);
position = rotation * calPos + target.transform.position;
transform.rotation = rotation;
transform.position = position;
} else
{
Quaternion rotation = Quaternion.Euler(y, x, 0);
Vector3 calPos = new Vector3(0, 0, -distanceLerp);
position = rotation * calPos + target.transform.position;
transform.rotation = rotation;
transform.position = position;
}
}
//Calculate Distance Method
void CalDistance()
{
distance = zoomMax;
distanceLerp = distance;
Quaternion rotation = Quaternion.Euler(y, x, 0);
Vector3 calPos = new Vector3(0, 0, -distanceLerp);
position = rotation * calPos + target.transform.position;
transform.rotation = rotation;
transform.position = position;
}
//Scroll Mouse Method
void ScrollMouse()
{
distanceLerp = Mathf.Lerp(distanceLerp,distance,Time.deltaTime * 5);
if (Input.GetAxis("Mouse ScrollWheel") != 0 && !GUI_Menu.instance.CheckHoverItemShop() && !GUI_Menu.instance.CheckHoverSkillWindow())
{
// get the distance between camera and target
distance = Vector3.Distance (transform.position , target.transform.position);
distance = ScrollLimit(distance - Input.GetAxis("Mouse ScrollWheel")*scrollSpeed, zoomMin, zoomMax);
}
}
//Scroll Limit Method
float ScrollLimit(float dist, float min, float max)
{
if (dist < min)
dist= min;
if (dist > max)
dist= max;
return dist;
}
//Clamp Angle Method
float ClampAngle(float angle,float min,float max)
{
if(angle < -360)
angle += 360;
if(angle > 360)
angle -= 360;
return Mathf.Clamp(angle,min,max);
}
}