gameManager

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Media;
using Microsoft.Xna.Framework.Audio;
namespace GameTemplate
{
    public enum GameState
    {
        MainMenu,
        Game,
        GameOver,
        Credits,
        Options,
    }
    public class GameManager
    {
        public Camera2d Tehcamera;

        public GameState CurrentState;

        public SpriteBatch spriteBatch;

        public List<GameObject> MainMenuGO;

        public LevelManager TheLevelManager;
        public List<GameObject> GameGO;

        public List<GameObject> GameOverGO;

        Song Gm;

        public GameManager(SpriteBatch TheSpriteBatch, ContentManager Content)
        {
            CurrentState = GameState.MainMenu;
            spriteBatch = TheSpriteBatch;



            MainMenuGO = new List<GameObject>();
            GameObject MenuBack = new GameObject(Vector2.Zero, Content.Load<Texture2D>("mainMenu"));
            MainMenuGO.Add(MenuBack);

            TheLevelManager = new LevelManager(Content);



            GameGO = new List<GameObject>();

            Gm = Content.Load<Song>("SuperHero_original");

            GameOverGO = new List<GameObject>();
        }

        public void SewtCamera(Camera2d cam)
        {
            Tehcamera = cam;
            if (TheLevelManager != null)
            {
                TheLevelManager.SewtCamera(cam);
            }
        }
        public void Update(float DT)
        {
            if (CurrentState == GameState.MainMenu)
            {
                MediaPlayer.Play(Gm);
                if (Keyboard.GetState().IsKeyDown(Keys.Enter))
                {
                    CurrentState = GameState.Game;
                }

                for (int i = 0; i < MainMenuGO.Count; ++i)
                {
                    MainMenuGO[i].Update(DT);
                }
            }
            else if(CurrentState == GameState.Game)
            {

                TheLevelManager.Update(DT);

                for (int i = 0; i < GameGO.Count; ++i)
                {
                    GameGO[i].Update(DT);
                }
            }
            else if (CurrentState == GameState.GameOver)
            {
                for (int i = 0; i < GameOverGO.Count; ++i)
                {
                    GameOverGO[i].Update(DT);
                }
            }
            else if(CurrentState == GameState.Credits)
            {

            }
            else if (CurrentState == GameState.Options)
            {

            }
        }
        public void Draw(SpriteBatch spriteBatch)
        {
            if (CurrentState == GameState.MainMenu)
            {
                for (int i = 0; i < MainMenuGO.Count; ++i)
                {
                    MainMenuGO[i].Draw(spriteBatch);
                }
            }
            else if (CurrentState == GameState.Game)
            {
                TheLevelManager.Draw(spriteBatch);

                for (int i = 0; i < GameGO.Count; ++i)
                {
                    GameGO[i].Draw(spriteBatch);
                }
            }
            else if (CurrentState == GameState.GameOver)
            {
                for (int i = 0; i < GameOverGO.Count; ++i)
                {
                    GameOverGO[i].Draw(spriteBatch);
                }
            }
            else if (CurrentState == GameState.Credits)
            {

            }
            else if (CurrentState == GameState.Options)
            {

            }
        }

    }
}