init: version 1

Assets/Prefabs/Managers/Scripts/TransitionManager.cs

@@ -0,0 +1,54 @@
+using System.Collections;
+using UnityEngine;
+
+/// <summary>
+/// TransitionManager is a singleton that manages the transitions
+/// between levels in the game.
+/// </summary>
+public class TransitionManager : MonoBehaviour
+{
+    public static TransitionManager Instance => _instance;
+    private static TransitionManager _instance;
+    
+    public int currentLevel;
+    
+    private Animator _animator;
+
+    private void Awake()
+    {
+        if (_instance != null && _instance != this)
+        {
+            Destroy(gameObject);
+            return;
+        }
+        _instance = this;
+        DontDestroyOnLoad(gameObject);
+        
+        _animator = GetComponentInChildren<Animator>();
+    }
+
+    public void NextLevel()
+    {
+        ToLevel(currentLevel + 1);
+    }
+    
+    public void ToLevel(int level)
+    {
+        currentLevel = level;
+        var scene = $"Level {level}";
+        if (Application.CanStreamedLevelBeLoaded(scene)) 
+            StartCoroutine(LoadLevel(scene));
+        else
+        {
+            currentLevel = 0;
+            StartCoroutine(LoadLevel("Menu"));
+        }
+    }
+
+    private IEnumerator LoadLevel(string levelName)
+    {
+        _animator.SetTrigger("Start");
+        yield return new WaitForSeconds(.5f);
+        UnityEngine.SceneManagement.SceneManager.LoadScene(levelName);
+    }
+}