Example #1
0
        static void Main(string[] args)
        {
            // creating game window
            RenderWindow window = new RenderWindow(new VideoMode(Config.SCREEN_WIDTH, Config.SCREEN_HEIGHT), "Snake Game"); // creating window object

            window.SetFramerateLimit(Config.FRAME_RATE);                                                                    // setting fps limit

            window.Closed += new EventHandler(OnClose);                                                                     // registering OnClose function as a callback function
                                                                                                                            // whenever window.Closed event occurs

            // creating resources object for game manipulation
            MainMenu           menu            = new MainMenu(ref window);
            Snake              snake           = new Snake(ref window);
            SnakeFood          food            = new SnakeFood(ref window);
            Score              score           = new Score(ref window);
            CollisionDetection collision       = new CollisionDetection();
            Music              BackgroundMusic = new Music(Config.BACKGROUND_MUSIC);

            BackgroundMusic.Loop = true;
            BackgroundMusic.Play();
            int ScoreCounter = 0;

            // ActivityNumber tells which activity is currently need to draw
            // for example : 0 -> MainMenu, 1 -> StartGame, 2 -> HighScore, 3 -> Quit
            int  ActivityNumber = 0;
            uint Frame_Rate     = 60;

            // starting game loop, the game window is open till any closing event doesn't occurs in event stack
            while (window.IsOpen)
            {
                // processing events that occured after window gets opened
                window.DispatchEvents();
                window.Clear(Color.Black);

                //
                switch (ActivityNumber)
                {
                // 7. Use of methods
                case 0:
                    // checking keypresses
                    window.SetFramerateLimit(Config.FRAME_RATE);
                    if (Keyboard.IsKeyPressed(Keyboard.Key.Up))
                    {
                        menu.ChangeSelectionText(-1);
                    }
                    else if (Keyboard.IsKeyPressed(Keyboard.Key.Down))
                    {
                        menu.ChangeSelectionText(1);
                    }
                    else if (Keyboard.IsKeyPressed(Keyboard.Key.Return))
                    {
                        ActivityNumber = menu.CurrentSelection + 1;
                    }
                    // drawing menu over window
                    menu.draw();
                    break;

                case 1:
                    // starting snake game
                    window.SetFramerateLimit(Frame_Rate);
                    window.Clear(Color.Black);
                    if (Keyboard.IsKeyPressed(Keyboard.Key.Up))
                    {
                        snake.ChangeDirection(Config.UP);
                    }
                    else if (Keyboard.IsKeyPressed(Keyboard.Key.Down))
                    {
                        snake.ChangeDirection(Config.DOWN);
                    }
                    else if (Keyboard.IsKeyPressed(Keyboard.Key.Left))
                    {
                        snake.ChangeDirection(Config.LEFT);
                    }
                    else if (Keyboard.IsKeyPressed(Keyboard.Key.Right))
                    {
                        snake.ChangeDirection(Config.RIGHT);
                    }
                    else if (Keyboard.IsKeyPressed(Keyboard.Key.Escape))
                    {
                        ActivityNumber = 0;
                    }

                    if (collision.IsCollide(food.GetPosition(), snake.getPositionOfHead()))
                    {
                        snake.ChangeLength(10);
                        ScoreCounter += 10;
                        Frame_Rate   += 10;
                        Console.WriteLine(Frame_Rate);
                        food.RandomizeFoodPosition();
                        window.SetFramerateLimit(Frame_Rate);
                    }

                    if (snake.isSnakeEatsItself())
                    {
                        // 5. Writing Data to simple text file
                        score.WriteScore(ScoreCounter);
                        Text GameOver = new Text("Game Over", new Font(Config.ARCADE_CLASSIC_FONT), 150);
                        GameOver.Position  = new Vector2f(70, Config.SCREEN_HEIGHT / 2 - 150);
                        GameOver.FillColor = Color.Cyan;
                        window.Draw(GameOver);
                        window.Display();
                        System.Threading.Thread.Sleep(2000);
                        ActivityNumber = 0;
                        break;
                    }

                    snake.move();
                    snake.draw();
                    food.Draw();
                    break;

                case 2:
                    // displaying high score
                    if (Keyboard.IsKeyPressed(Keyboard.Key.Escape))
                    {
                        ActivityNumber = 0;
                    }
                    score.Draw();
                    break;

                case 3:
                    // quitting game window
                    window.Close();
                    break;
                }

                window.Display();
            }
        }