done

Assets/Scripts/GameManager.cs

@@ -0,0 +1,129 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Assertions;
+
+public class GameManager : MonoBehaviour
+{
+    [SerializeField] private Player _player;
+    
+    private float _lastTimeof2Seconds;
+    [SerializeField] private TMPro.TextMeshProUGUI _timer;
+    
+    [SerializeField] private TMPro.TextMeshProUGUI _gameOver;
+    
+    [SerializeField] private GameObject _potionPrefab; 
+    private Vector2 _potionGroundSpawnRange = new Vector2(-48f, 48f);
+    private int _healthDecrease = -2;
+
+    [SerializeField] private GameObject _keyPrefab;
+    private HiddenObject _keyInstanceScript;
+    private GameObject _keyInstance;
+    private bool isKeyCollected = false;
+
+    [SerializeField] private GameObject _chestClosedPrefab;
+    [SerializeField] private GameObject _chestOpenPrefab;
+    private GameObject _chestInstance;
+
+    private void Start()
+    {
+        Assert.IsNotNull(_player);
+        _lastTimeof2Seconds = Time.time;
+        _gameOver.enabled = false;
+        
+        SpawnPotion();    
+        
+        Assert.IsNotNull(_keyPrefab);
+        _keyInstance = Instantiate(_keyPrefab,
+            new Vector3(
+                Random.Range(_potionGroundSpawnRange.x, _potionGroundSpawnRange.y),
+                0.5f,
+                Random.Range(_potionGroundSpawnRange.x, _potionGroundSpawnRange.y)
+                ),
+            Quaternion.identity);
+        
+        _keyInstanceScript = _keyInstance.transform.GetChild(0).gameObject.GetComponent<HiddenObject>();
+        Assert.IsNotNull(_keyInstance);
+        
+        Assert.IsNotNull(_chestClosedPrefab);
+        _chestInstance = Instantiate(_chestClosedPrefab,
+            new Vector3(
+                Random.Range(_potionGroundSpawnRange.x, _potionGroundSpawnRange.y),
+                0.5f,
+                Random.Range(_potionGroundSpawnRange.x, _potionGroundSpawnRange.y)
+            ),
+            Quaternion.LookRotation(Vector3.up));
+    }
+
+    public void CollectKey()
+    {
+        isKeyCollected = true;
+        Debug.Log("Collected Key");
+    }
+
+    public void OpenChest()
+    {
+        if (!isKeyCollected)
+        {
+            Debug.LogWarning("Key not collected");
+            return;
+        }
+
+        Instantiate(
+            _chestOpenPrefab,
+            new Vector3(
+                _chestInstance.transform.position.x,
+                0.5f,
+                _chestInstance.transform.position.z
+            ),
+            Quaternion.LookRotation(Vector3.up)
+        );
+        GameOver(true);
+    }
+    public void SpawnPotion()
+    {
+        Assert.IsNotNull(_potionPrefab);
+        Instantiate(_potionPrefab, 
+            new Vector3(
+                Random.Range(_potionGroundSpawnRange.x, _potionGroundSpawnRange.y),
+                0.5f,
+                Random.Range(_potionGroundSpawnRange.x, _potionGroundSpawnRange.y)),
+            Quaternion.identity);
+    }
+
+    private void Update()
+    {
+        _timer.SetText(((int)(Time.time)).ToString());
+        if (Time.time - _lastTimeof2Seconds > 2)
+        {
+            Debug.Log("Decreasing health");
+            _lastTimeof2Seconds = Time.time;
+            _player.AddHealth(_healthDecrease);
+        }
+
+        if (_player.GetHealth() <= 0)
+        {
+            GameOver();
+        }
+
+        if (Input.GetKeyDown(KeyCode.R))
+        {
+            _keyInstanceScript.ShowObjectForSeconds(3);
+        }
+    }
+
+    private void GameOver(bool isWon = false)
+    {
+        _player.SetIsMovementEnabled(false);
+        _healthDecrease = 0;
+        if (isWon)
+        {
+            _gameOver.SetText("You won!");
+        }
+        else
+        {
+            _gameOver.SetText("You lost!");
+        }
+        _gameOver.enabled = true; 
+    }
+}