singleton game controller

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Assets/Scripts/GameController.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class GameController : MonoBehaviour
+{
+    private static GameController instance;
+    public bool isOver{get; set;} //The game is over
+    public static GameController Instance{
+        get{
+            if(instance is null)Debug.LogError("Game controller is null");
+            return instance;
+        }
+    }
+
+    private void Awake() {
+        instance = this;
+        DontDestroyOnLoad(this.gameObject);
+        isOver = false;
+    }
+}

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ProjectSettings/DynamicsManager.asset

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