using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraShake : MonoBehaviour{

    float shakeAmount = 0;
    Vector3 startPos;

    public void Shake(float amt, float length){
        shakeAmount = amt;
        startPos = transform.localPosition;
        InvokeRepeating("DoShake", 0, 0.01f);
        Invoke("StopShake", length);
    }

    void DoShake(){
        if (shakeAmount > 0){
            Vector3 camPos = transform.position;

            float offsetX = Random.value * shakeAmount * 2 - shakeAmount;
            float offsetY = Random.value * shakeAmount * 2 - shakeAmount;
            camPos.x += offsetX;
            camPos.y += offsetY;

            transform.position = camPos;
        }
    }

    void StopShake(){
        CancelInvoke("DoShake");
        transform.localPosition = startPos;
    }
}