震屏效果脚本的实现

通过改变相机的位置实现屏幕震动的效果

/// <summary>
/// 震屏效果脚本
/// 通过设置相机的Viewport Rect 来实现,将下面的脚本挂在相机上，设置enabled=true就可实现屏幕震动效果。
/// </summary>
public class ShakeCamera : MonoBehaviour
{
    public float shakeLevel = 3f;// 震动幅度
    public float setShakeTime = 0.5f;   // 震动时间
    public float shakeFps = 45f;    // 震动的FPS
    private bool isshakeCamera = false;// 震动标志
    private float fps;
    private float shakeTime = 0.0f;
    private float frameTime = 0.0f;
    private float shakeDelta = 0.005f;
    private Camera selfCamera;
    void OnEnable()
    {
        isshakeCamera = true;
        selfCamera = gameObject.GetComponent<Camera>();
        shakeTime = setShakeTime;
        fps = shakeFps;
        frameTime = 0.03f;
        shakeDelta = 0.005f;
    }
    void OnDisable()
    {
        selfCamera.rect = new Rect(0.0f, 0.0f, 1.0f, 1.0f);
        isshakeCamera = false;
    }
    // Update is called once per frame
    void Update()
    {
        if (isshakeCamera)
        {
            if (shakeTime > 0)
            {
                shakeTime -= Time.deltaTime;
                if (shakeTime <= 0)
                {
                    enabled = false;
                }
                else
                {
                    frameTime += Time.deltaTime;
                    if (frameTime > 1.0 / fps)
                    {
                        frameTime = 0;
                        selfCamera.rect = new Rect(shakeDelta * (-1.0f + shakeLevel * Random.value), shakeDelta * (-1.0f + shakeLevel * Random.value), 1.0f, 1.0f);
                    }
                }
            }
        }
    }
}