GameStateManager.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class GameStateManager : MonoBehaviour
{

    public playerControls player1;//player reference 
    public TileMapGenerator _mapGen;//map generator reference
    public List<GameObject> Spheres;//list of sphere that should be off
    public Camera mainCam;//main camera in scene for basic tracking of player
    public enum GameState { titleScreen, LoadMap , InGame , Wait};//basic game states
    public GameState _gameState;//current game state

    public enum MapGenPhase { off, tileMap, GiantCubes, Explosion , Done };//basic map generator phases
    public MapGenPhase _mapGenPhase;//current map phase

    // Start is called before the first frame update
    void Start()
    {
        _gameState = GameState.titleScreen;//set state to title screen
        Debug.Log("At Title Screen press Enter to start game");
    }

    // Update is called once per frame
    void Update()
    {
        if(_gameState == GameState.titleScreen)//if on title screen press enter to start game/generate stage
        {
            if(Input.GetKeyDown(KeyCode.Return))
            {
                _gameState = GameState.LoadMap;//change game state to load map
                _mapGenPhase = MapGenPhase.tileMap;//start tile gen phase
                _mapGen.GenerateMapInital();//generate tiles
                _mapGenPhase = MapGenPhase.Explosion;//change phase to explode the spheres
                ExplodeSpheres();//explode the spheres
                _mapGenPhase = MapGenPhase.Done;//map gen is now complete
                //Debug.Log("map created turn on player and start camera tracking");
                player1.gameObject.SetActive(true);//turn on player
                mainCam.transform.SetParent(player1.transform);//set camera to child of player
            }
        }
    }

    public void ExplodeSpheres()
    {
        foreach(GameObject sphere in Spheres)
        {
            sphere.SetActive(true);//turn on spheres
        }
    }
}