init: version 1

Assets/Prefabs/Managers/Scripts/GameManager.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine.Events;
+using UnityEngine;
+
+/// <summary>
+/// GameManager is a singleton that manages the game state of
+/// a single scene.
+/// </summary>
+public class GameManager : MonoBehaviour
+{
+    public static GameManager Instance => _instance;
+    private static GameManager _instance;
+    
+    public MapSwitchEvent onMapSwitch;
+    public RespawnEvent onRespawn;
+
+    public int currentMapIdx;
+    public List<GameObject> maps;
+    public List<CubeController> cubes;
+    
+    private void Awake()
+    {
+        if (_instance != null && _instance != this)
+        {
+            Destroy(gameObject);
+            return;
+        }
+        _instance = this;
+    }
+
+    public void SwitchMap(int mapIdx)
+    {
+        Vector3 offset = maps[mapIdx].transform.position - maps[currentMapIdx].transform.position;
+        currentMapIdx = mapIdx;
+        onMapSwitch?.Invoke(currentMapIdx, offset);
+    }
+    
+    public void ResetCubes()
+    {
+        foreach (var cube in cubes.Where(x=> x.currentMap == currentMapIdx && x.originMap != x.currentMap))
+        {
+            cube.Respawn();
+        }
+    }
+    
+    private void Update()
+    {
+        if (!Input.GetKeyDown(KeyCode.J)) return;
+        SwitchMap((currentMapIdx + 1) % maps.Count);
+    }
+}
+
+[Serializable]
+public class MapSwitchEvent : UnityEvent<int, Vector3>
+{
+}
+
+[Serializable]
+public class RespawnEvent : UnityEvent
+{
+}