public void Draw(SpriteBatch spriteBatch)
{
if (_gameState != GameState.PLAYING && _gameState != GameState.GAMEOVER && _gameState != GameState.NAME_ENTRY)
{
spriteBatch.Draw(_background, Vector2.Zero, Color.White);
}
if (_gameState == GameState.GAMEOVER)
{
spriteBatch.Draw(_backgroundGameOver, Vector2.Zero, Color.White);
spriteBatch.Draw(_playAgainButton, _playAgainPosition, Color.White);
spriteBatch.Draw(_mainMenuButton, _mainMenuPosition, Color.White);
}
if (_gameState == GameState.STARTUP)
{
spriteBatch.Draw(_startButton, _startResumePosition, Color.White);
spriteBatch.Draw(_controlsButton, _controlsPosition, Color.White);
spriteBatch.Draw(_leaderboardsButton, _leaderboardsPosition, Color.White);
}
if (_gameState == GameState.NAME_ENTRY)
{
Vector2 nameCommandPos = new Vector2(
GameConstants.WINDOW_WIDTH / 2 - _font.MeasureString(GameConstants.MENU_ENTER_NAME_COMMAND).X / 2,
GameConstants.WINDOW_HEIGHT / 2 - _font.MeasureString(GameConstants.MENU_ENTER_NAME_COMMAND).Y / 2 - GameConstants.MENU_ENTER_NAME_COMMAND_MARGIN);
spriteBatch.DrawString(_font, GameConstants.MENU_ENTER_NAME_COMMAND, nameCommandPos, Color.White);
}
if (_gameState == GameState.PAUSED)
{
spriteBatch.Draw(_resumeButton, _startResumePosition, Color.White);
spriteBatch.Draw(_controlsButton, _controlsPosition, Color.White);
spriteBatch.Draw(_leaderboardsButton, _leaderboardsPosition, Color.White);
}
if (_showControls && _gameState != GameState.PLAYING && _gameState != GameState.GAMEOVER)
{
spriteBatch.Draw(_controls, new Vector2(GameConstants.WINDOW_WIDTH / 2, GameConstants.MENU_BUTTON_AREA_Y), Color.White);
}
if (_showLeaderboards && _gameState != GameState.PLAYING && _gameState != GameState.GAMEOVER)
{
HighScoreData data = HighScoreData.LoadHighScores();
for (int i = 0; i < data.Count; i++)
{
spriteBatch.DrawString(_font, data.PlayerName[i], new Vector2(GameConstants.WINDOW_WIDTH / 2, GameConstants.MENU_LEADERBOARD_Y + GameConstants.MENU_LEADERBOARD_MARGIN_Y * i), Color.White);
spriteBatch.DrawString(_font, data.Score[i].ToString(), new Vector2(GameConstants.WINDOW_WIDTH / 2 + GameConstants.MENU_LEADERBOARD_MARGIN_X, GameConstants.MENU_LEADERBOARD_Y + GameConstants.MENU_LEADERBOARD_MARGIN_Y * i), Color.White);
}
}
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
KeyboardState currentKeyboardState = Keyboard.GetState();
MouseState mouseState = Mouse.GetState();
#region Mouse Visibility Support
if (_menu.Gamestate != GameState.PLAYING)
{
IsMouseVisible = true;
}
else
{
IsMouseVisible = false;
}
#endregion
#region Menu Support
if (currentKeyboardState.IsKeyDown(Keys.Escape) && _oldKeyboardState.IsKeyUp(Keys.Escape) && _menu.Gamestate == GameState.PLAYING)
{
_menu.Gamestate = GameState.PAUSED;
_menu.ShowControls = true;
_menu.ShowLeaderboards = false;
}
else if (currentKeyboardState.IsKeyDown(Keys.Escape) && _oldKeyboardState.IsKeyUp(Keys.Escape) && _menu.Gamestate == GameState.PAUSED)
{
_menu.Gamestate = GameState.PLAYING;
}
if (_restart == true)
{
PlayAgain();
}
if (_canStart == true && _menu.Gamestate != GameState.GAMEOVER)
{
StartGame();
}
if (_updateLeaderboard)
{
HighScoreData.LoadHighScores().SaveHighScore(_score.CurrentScore, _player.Name);
_updateLeaderboard = false;
}
#endregion
#region Updates
_menu.Update(mouseState);
_player.Update(_menu.Gamestate, currentKeyboardState);
#endregion
#region GameObject Updates
if (_menu.Gamestate == GameState.PLAYING)
{
if (_ship.IsAlive)
{
_ship.Update(gameTime, Keyboard.GetState(), _menu.Gamestate);
UpdateAsteroids(gameTime);
UpdateProjectiles(gameTime);
GenerateNewAsteroids();
}
#region Collision Support
CheckOutOfBounds();
ResolveShipAsteroidCollision();
ResolveAsteroidProjectileCollision();
CheckShipHealth();
#endregion
#region Cleaning Support
ClearFinishedExplosions();
ClearOffScreenProjectiles();
ClearDestroyedAsteroids();
#endregion
UpdateExplosions(gameTime);
}
#endregion
_oldKeyboardState = currentKeyboardState;
base.Update(gameTime);
}