按持续时间和振幅震动：

/// 


/// 摄像机震动

/// ZhangYu 2019-03-30

/// 


public class CameraShake : MonoBehavIoUr {

public float time = 1;          // 持续时间
public float range = 0.5f;      // 震动幅度
public float remainTime = 0;    // 剩余时间
private Vector3 origin;         // 原始位置

private void OnEnable() {
    remainTime = time;
    origin = transform.position;
}

private void LateUpdate() {
    if (remainTime > 0) {
        transform.position = origin + Random.insideUnitSphere * range * (remainTime / time);
        remainTime -= Time.deltaTime;
    } else {
        remainTime = 0;
        enabled = false;
        transform.position = origin;
    }
}
}