internal void ChangeState(GameState NextState) {
//Logo spash can come from ANY state since its the place you go when you restart
if (NextState == GameState.LogoSplash) {
if (currentScreen != null)
currentScreen.Shutdown();
currentScreen = new TitleScreen(this);
gameState = GameState.LogoSplash;
} else if (gameState == GameState.LogoSplash && NextState == GameState.ShipSelection) {
Sound.PlayCue(Sounds.MenuAdvance);
//This is really where the game starts so setup the player information
players = new Player[2] { new Player(), new Player() };
//Start at level 1
gameLevel = 1;
currentScreen.Shutdown();
currentScreen = new SelectionScreen(this);
gameState = GameState.ShipSelection;
} else if (gameState == GameState.PlayEvolved && NextState == GameState.ShipUpgrade) {
currentScreen.Shutdown();
currentScreen = new ShipUpgradeScreen(this);
gameState = GameState.ShipUpgrade;
} else if ((gameState == GameState.ShipSelection || GameState == GameState.ShipUpgrade) && NextState == GameState.PlayEvolved) {
Sound.PlayCue(Sounds.MenuAdvance);
currentScreen.Shutdown();
currentScreen = new EvolvedScreen(this);
gameState = GameState.PlayEvolved;
} else if (gameState == GameState.LogoSplash && NextState == GameState.PlayRetro) {
//Game starts here for retro
players = new Player[2] { new Player(), new Player() };
currentScreen.Shutdown();
currentScreen = new RetroScreen(this);
gameState = GameState.PlayRetro;
} else if (gameState == GameState.PlayEvolved && NextState == GameState.Victory) {
currentScreen.Shutdown();
currentScreen = new VictoryScreen(this);
gameState = GameState.Victory;
} else {
//This is a BAD thing and should never happen
// What does this map to on XBox 360?
//Debug.Assert(false, String.Format("Invalid State transition {0} to {1}", gameState.ToString(), NextState.ToString()));
}
}