Make PlayerManager a singleton; update to editor version 6000.0.33f1

Assets/PlayerManager.cs

@@ -1,12 +1,21 @@
+using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.InputSystem;
 
 public class PlayerManager : MonoBehaviour
 {
+    public static PlayerManager Instance;
+
+    public List<GameObject> players;
     [SerializeField] private Vector2 spawnPosition;
 
     private PlatformerCameraMovement playerCamera;
 
+    private void Awake()
+    {
+        Init();
+    }
+
     private void Start()
     {
         GetComponent<PlayerInputManager>().onPlayerJoined += OnPlayerJoined;
@@ -18,14 +27,26 @@ public class PlayerManager : MonoBehaviour
     private void OnPlayerJoined(PlayerInput playerInput)
     {
         playerInput.transform.position = spawnPosition;
-        playerCamera.players.Add(playerInput.gameObject);
+        players.Add(playerInput.gameObject);
         print("Player joined");
     }
 
     private void OnPlayerLeft(PlayerInput playerInput)
     {
         Destroy(playerInput.gameObject);
-        playerCamera.players.Remove(playerInput.gameObject);
+        players.Remove(playerInput.gameObject);
         print("Player left");
     }
+
+    private void Init()
+    {
+        if (Instance == null)
+        {
+            Instance = this;
+        }
+        else
+        {
+            print("A PlayerManager already exists.");
+        }
+    }
 }