CameraShake

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Cinemachine;
public class CameraShake : MonoBehaviour
{
    public static CameraShake Instance { get; private set; }
    CinemachineVirtualCamera cinemachineVirtualCamera;
    float shakerTimer;
    float shakerTimerTotal;
    float startingIntensity;
    void Awake()
    {
        Instance = this;
        cinemachineVirtualCamera = GetComponent<CinemachineVirtualCamera>();

    }

    public void ShakeCamera(float intensity, float time)
    {
        CinemachineBasicMultiChannelPerlin cinemachineBasicMultiChannelPerlin = cinemachineVirtualCamera.GetCinemachineComponent<CinemachineBasicMultiChannelPerlin>();
        cinemachineBasicMultiChannelPerlin.m_AmplitudeGain = intensity;

        startingIntensity = intensity;
        shakerTimerTotal = time;
        shakerTimer = time;
    }

    private void Update()
    {
        if (shakerTimer > 0)
        {
            shakerTimer -= Time.deltaTime;
            CinemachineBasicMultiChannelPerlin cinemachineBasicMultiChannelPerlin = cinemachineVirtualCamera.GetCinemachineComponent<CinemachineBasicMultiChannelPerlin>();
            cinemachineBasicMultiChannelPerlin.m_AmplitudeGain = Mathf.Lerp(startingIntensity, 0f, 1f - shakerTimer / shakerTimerTotal);
        }
    }
}