unirun1/Assets/Scripts/GameManager.cs

using UnityEngine;
using UnityEngine.SceneManagement;
using TMPro;

public class GameManager : MonoBehaviour {
    public static GameManager instance;

    public bool isGameover = false;
    public TextMeshProUGUI scoreText;
    public GameObject gameoverUI;

    private int score = 0;

    void Awake() {
        if (instance == null)
        {
            instance = this;
        }
        else
        {
            Debug.LogWarning("씬에 두개 이상의 게임 매니저가 존재합니다!");
            Destroy(gameObject);
        }
    }

    void Update() {
        if (isGameover && Input.GetMouseButtonDown(0))
        {
            SceneManager.LoadScene(SceneManager.GetActiveScene().name);
        }
    }

    public void AddScore(int newScore) {
        score += newScore;
        scoreText.text = "Score : " + score;
    }

    public void OnPlayerDead() {
        isGameover = true;
        gameoverUI.SetActive(true);
    }
}