Unity 屏幕震动效果实现

要实现震屏效果其实并不难，所谓的震屏在PC端可以简单地理解为相机(MainCamera)的抖动。
代码实现如下：

using UnityEngine;
using System.Collections;
public class ScreenShake : MonoBehaviour
{
private float shakeTime = 0.0f;
private float fps= 20.0f;
private float frameTime =0.0f;
private float shakeDelta =0.005f;
public  Camera cam ;
public static bool isshakeCamera =false;
// Use this for initialization
void Start ()
{
shakeTime = 2.0f;
fps= 20.0f;
frameTime =0.03f;
shakeDelta =0.005f;
　　　　//isshakeCamera=true;
}

// Update is called once per frame
void Update ()
{
if (isshakeCamera)
{
if(shakeTime > 0)
{
shakeTime -= Time.deltaTime;
if(shakeTime <= 0)
{
cam.rect = new Rect(0.0f,0.0f,1.0f,1.0f);
isshakeCamera =false;
shakeTime = 1.0f;
fps= 20.0f;
frameTime =0.03f;
shakeDelta =0.005f;
}
else
{
frameTime += Time.deltaTime;

if(frameTime > 1.0 / fps)
{
frameTime = 0;
cam.rect = new Rect(shakeDelta * ( -1.0f + 2.0f * Random.value),shakeDelta * ( -1.0f + 2.0f * Random.value), 1.0f, 1.0f);
}
}
}
}
}
}

实现代码就完成了，如何使用呢？
观察发现其实要想使用震屏效果只需isshakeCamera=true即可。
简单测试：把Start()函数取消注释即可。
因此我可以在我的游戏中的爆炸效果调用启用震屏脚本。

using UnityEngine;
using System.Collections;

public class planFly2 : MonoBehaviour
{
public static int  speed = 40;
public GameObject airplne;

public GameObject stone;
public GameObject  gobj_boom;

public static float planeX;

public AudioSource music;
public float musicVolume;

public static bool autoflystart=false; //自动飞行信号
public static bool actionstart=false; //开始行动

Vector3 vectauto=Vector3.left;

// Use this for initialization
void Start ()
{
musicVolume=1f;
}

IEnumerator autoFly()
{
while(actionstart)
{
airplne.transform.Translate(vectauto* Time.deltaTime * speed,Space.World);
planeX=airplne.transform.position.x;
if(airplne.transform.position.x<=-55||airplne.transform.position.x>=52)
{
vectauto=-vectauto;
if(airplne.transform.position.x==0)
{
yield return new WaitForSeconds(1f);
}
}
yield return new WaitForSeconds(0.02f);
}
}

// Update is called once per frame
void Update ()
{
if(((Input.GetKey(KeyCode.W)||(Input.GetKey(KeyCode.UpArrow)))&&airplne.transform.position.y<95))
{
actionstart=false;//解除自动飞行
autoflystart=false;
airplne.transform.Translate(Vector3.up* Time.deltaTime * speed,Space.World);
}
if((Input.GetKey(KeyCode.D)||(Input.GetKey(KeyCode.RightArrow)))&&airplne.transform.position.x<50)
{
actionstart=false;
autoflystart=false;
airplne.transform.Translate(Vector3.right* Time.deltaTime * speed,Space.World);
planeX=airplne.transform.position.x;
}
if((Input.GetKey(KeyCode.A)||(Input.GetKey(KeyCode.LeftArrow)))&&airplne.transform.position.x>-50)
{
actionstart=false;
autoflystart=false;
airplne.transform.Translate(Vector3.left* Time.deltaTime * speed,Space.World);
planeX=airplne.transform.position.x;
}
if((Input.GetKey(KeyCode.S)||(Input.GetKey(KeyCode.DownArrow)))&&airplne.transform.position.y>47)
{
actionstart=false;
autoflystart=false;
airplne.transform.Translate(Vector3.down* Time.deltaTime * speed,Space.World);
}
if(Input.GetKeyDown(KeyCode.Q))
{
StopAllCoroutines();
autoflystart=!autoflystart;
actionstart=true;
if(autoflystart)
{
StartCoroutine(autoFly());
}
}
if(ui.signal)
{
airplne.transform.Translate(Vector3.up*1,Space.World);
}
if(ui.stopAll)
{
transform.gameObject.SetActive(false);
}
}

void OnCollisionEnter2D(Collision2D coll) //石头砸到飞机 飞机减血
{
if(coll.transform.tag!="plane2_bullet")
{
if(coll.gameObject.tag=="coin")
{
ui.gold++;
music.Play();
Destroy(coll.gameObject);
ScreenShake.isshakeCamera=true;
}
else
{
if(coll.gameObject.tag!="jiguang")
{
Destroy(coll.transform.gameObject);
GameObject tm_boom = Instantiate(gobj_boom,coll.transform.position,new Quaternion()) as GameObject;
Destroy(tm_boom,2);//实例后销毁粒子效果
ui.bloods-=5;
ScreenShake.isshakeCamera=true;
}
}
}
}
}

红色标记即为调用震屏效果：

此时屏幕就会震动！