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

/*
--------------------------------------
    Project: Programing assessment
    Standard: 91906 (AS3.7) v.1
    School: Tauranga Boys' College
    Author: Rauputu Noah Phizacklea
    Date: August 2024
    Unity: 2021.3.18f
---------------------------------------
*/

public class PlayerGun : MonoBehaviour
{
    public float offset; // Rotation offset for the gun

    public GameObject bullet; // Bullet prefab
    public Transform firePoint; // Point from which bullets are fired

    private float timeBetweenShots; // Time between shots
    public float startTimeBetweenShots; // Initial time between shots

    public int gunFireStaminaCost = 60; // Stamina cost per shot
    public PlayerStamina playerStamina; // Reference to player stamina
    AudioManager audioManager; // Reference to the audio manager

    void Awake() 
    {
        // Initialize audio manager
        audioManager = GameObject.FindGameObjectWithTag("Audio").GetComponent<AudioManager>();
    }

    void Start() 
    {
        // Initialize player stamina if not assigned
        if (playerStamina == null)
        {
            playerStamina = GetComponentInParent<PlayerStamina>();
        }
    }

    void Update()
    {
        // Rotate gun towards the mouse
        Vector3 difference = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
        float rotateZ = Mathf.Atan2(difference.y, difference.x) * Mathf.Rad2Deg;
        transform.rotation = Quaternion.Euler(0f, 0f, rotateZ + offset);

        // Handle shooting
        if (timeBetweenShots <= 0)
        {
            if (Input.GetMouseButtonDown(1) && playerStamina.UseStamina(gunFireStaminaCost))
            {
                audioManager.PlaySFX(audioManager.bulletAttackSFX);
                Instantiate(bullet, firePoint.position, transform.rotation);
                timeBetweenShots = startTimeBetweenShots; // Reset shot timer
            }
        }
        else
        {
            timeBetweenShots -= Time.deltaTime; // Countdown to next shot
        }
    }
}