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

public class ShotPower_Interval : MonoBehaviour
{
    private int count;

    private int maxPower = 100;
    private int shotPower;

    public GameObject shellPrefab;
    public TextMeshProUGUI powerLabel;

    private int maxInterval = 20;
    private int interval;

    public AudioClip shotSound;

    private void Start()
    {
        shotPower = maxPower;
        powerLabel.text = "POWER: " + shotPower;

        interval = maxInterval;
    }

    private void FixedUpdate()
    {
        if (Input.GetKey(KeyCode.Z) && shotPower > 0)
        {
            count += 1;

            if (count % interval == 0)
            {
                GameObject shell = Instantiate(shellPrefab, transform.position, Quaternion.identity);
                Rigidbody shellRb = shell.GetComponent();
                shellRb.AddForce(transform.forward * 1000);

                AudioSource.PlayClipAtPoint(shotSound, transform.position);

                Destroy(shell, 5.0f);

                shotPower -= 1;

                if (shotPower < 1)
                {
                    shotPower = 0;

                    // ★パワー回復
                    Invoke("ResetPower", 5.0f);
                }

                powerLabel.text = "POWER: " + shotPower;

                // ★ポイント
                if(shotPower % 25 == 0)
                {
                    interval -= 5;
                }
            }
        }
    }

    // ５秒後にショットパワー回復
    void ResetPower()
    {
        shotPower = maxPower;
        powerLabel.text = "POWER: " + shotPower;

        // 発射間隔も初期状態に戻す。
        interval = maxInterval;
    }
}