/// <summary>
/// Allows the game component to perform any initialization it needs to before starting
/// to run. This is where it can query for any required services and load content.
/// </summary>
public override void Initialize() {
// We don't want XNA calling this method each time we resume from the menu,
// unfortunately, it'll call it whatever we try. So the only thing
// we can do is check if it has been called already and return. Yes, it's ugly.
if (mSpriteBatch != null) {
GhostSoundsManager.ResumeLoops();
return;
}
// Otherwise, this is the first time this component is Initialized, so proceed.
GhostSoundsManager.Init(Game);
Grid.Reset();
Constants.Level = 1;
mSpriteBatch = (SpriteBatch)Game.Services.GetService(typeof(SpriteBatch));
mGraphicsDeviceManager = (GraphicsDeviceManager)Game.Services.GetService(typeof(GraphicsDeviceManager));
mSoundBank = (SoundBank)Game.Services.GetService(typeof(SoundBank));
mScoreFont = Game.Content.Load<SpriteFont>("Score");
mScoreEventFont = Game.Content.Load<SpriteFont>("ScoreEvent");
mXLife = Game.Content.Load<Texture2D>("sprites/ExtraLife");
mPPill = Game.Content.Load<Texture2D>("sprites/PowerPill");
mCrump = Game.Content.Load<Texture2D>("sprites/Crump");
mBoard = Game.Content.Load<Texture2D>("sprites/Board");
mBoardFlash = Game.Content.Load<Texture2D>("sprites/BoardFlash");
mBonusEaten = new Dictionary<string, int>();
mBonus = new Dictionary<string, Texture2D>(9);
mBonus.Add("Apple", Game.Content.Load<Texture2D>("bonus/Apple"));
mBonus.Add("Banana", Game.Content.Load<Texture2D>("bonus/Banana"));
mBonus.Add("Bell", Game.Content.Load<Texture2D>("bonus/Bell"));
mBonus.Add("Cherry", Game.Content.Load<Texture2D>("bonus/Cherry"));
mBonus.Add("Key", Game.Content.Load<Texture2D>("bonus/Key"));
mBonus.Add("Orange", Game.Content.Load<Texture2D>("bonus/Orange"));
mBonus.Add("Pear", Game.Content.Load<Texture2D>("bonus/Pear"));
mBonus.Add("Pretzel", Game.Content.Load<Texture2D>("bonus/Pretzel"));
mBonus.Add("Strawberry", Game.Content.Load<Texture2D>("bonus/Strawberry"));
mScoreEvents = new List<ScoreEvent>(5);
mBonusPresent = false;
mBonusSpawned = 0;
mEatenGhosts = 0;
Score = 0;
mXLives = 2;
mPaChomp = true;
mPLayerDied = false;
mPlayer = new Player(Game);
mGhosts = new List<Ghost> {
new Ghost(Game, mPlayer, EGhostType.Blinky),
new Ghost(Game, mPlayer, EGhostType.Clyde),
new Ghost(Game, mPlayer, EGhostType.Inky),
new Ghost(Game, mPlayer, EGhostType.Pinky)
};
mGhosts[2].SetBlinky(mGhosts[0]); // Oh, dirty hack. Inky needs this for his AI.
mSoundBank.PlayCue("Intro");
LockTimer = TimeSpan.FromMilliseconds(4500);
base.Initialize();
}
/// <summary>
/// Allows the game component to update itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
public override void Update(GameTime gameTime) {
// Some events (death, new level, etc.) lock the game for a few moments.
if (DateTime.Now - mEventTimer < LockTimer) {
mGhosts.ForEach(g => g.LockTimer(gameTime));
// Also we need to do the same thing for our own timer concerning bonuses
mBonusSpawnedTime += gameTime.ElapsedGameTime;
return;
}
// Remove special events older than 5 seconds
mScoreEvents.RemoveAll(e => DateTime.Now - e.Date > TimeSpan.FromSeconds(5));
// If the player had died, spawn a new one or end game.
if (mPLayerDied) {
// extra lives are decremented here, at the same time the pac man is spawned; this makes those
// events seem linked.
mXLives--;
//mXLives++; // Give infinite lives to the evil developer;
if (mXLives >= 0) {
mPLayerDied = false;
mPlayer = new Player(Game);
mGhosts.ForEach(g => g.Reset(false, mPlayer));
mScoreEvents.Clear();
} else {
// The game is over
Menu.SaveHighScore(Score);
Game.Components.Add(new Menu(Game, null));
Game.Components.Remove(this);
GhostSoundsManager.StopLoops();
return;
}
}
// When all crumps have been eaten, wait a few seconds and then spawn a new level
if (noCrumpsLeft()) {
if (Constants.Level < 21) {
mBonusSpawned = 0;
Grid.Reset();
mPlayer = new Player(Game);
mGhosts.ForEach(g => g.Reset(true, mPlayer));
mSoundBank.PlayCue("NewLevel");
LockTimer = TimeSpan.FromSeconds(2);
Constants.Level++;
return;
} else { // Game over, you win.
Menu.SaveHighScore(Score);
Game.Components.Add(new Menu(Game, null));
Game.Components.Remove(this);
GhostSoundsManager.StopLoops();
return;
}
}
Keys[] inputKeys = Keyboard.GetState().GetPressedKeys();
// The user may escape to the main menu with the escape key
if (inputKeys.Contains(Keys.Escape)) {
Game.Components.Add(new Menu(Game, this));
Game.Components.Remove(this);
GhostSoundsManager.PauseLoops(); // will be resumed in Initialize(). No need for stopping them
// if the player subsequently quits the game, since we'll re-initialize GhostSoundManager in
// Initialize() if the player wants to start a new game.
return;
}
// Eat crumps and power pills.
if (mPlayer.Position.DeltaPixel == Point.Zero) {
Point playerTile = mPlayer.Position.Tile;
if (Grid.TileGrid[playerTile.X, playerTile.Y].HasCrump) {
mSoundBank.PlayCue(mPaChomp ? "PacMAnEat1" : "PacManEat2");
mPaChomp = !mPaChomp;
Score += 10;
Grid.TileGrid[playerTile.X, playerTile.Y].HasCrump = false;
if (Grid.TileGrid[playerTile.X, playerTile.Y].HasPowerPill) {
Score += 40;
mEatenGhosts = 0;
for (int i = 0; i < mGhosts.Count; i++) {
if (mGhosts[i].State == EGhostState.Attack || mGhosts[i].State == EGhostState.Scatter ||
mGhosts[i].State == EGhostState.Blue) {
mGhosts[i].State = EGhostState.Blue;
}
}
Grid.TileGrid[playerTile.X, playerTile.Y].HasPowerPill = false;
}
// If that was the last crump, lock the game for a while
if (noCrumpsLeft()) {
GhostSoundsManager.StopLoops();
LockTimer = TimeSpan.FromSeconds(2);
return;
}
}
}
// Eat bonuses
if (mBonusPresent && mPlayer.Position.Tile.Y == 17 && ((mPlayer.Position.Tile.X == 13 && mPlayer.Position.DeltaPixel.X == 8) || (mPlayer.Position.Tile.X == 14 && mPlayer.Position.DeltaPixel.X == -8))) {
LockTimer = TimeSpan.FromSeconds(1.5);
Score += Constants.BonusScores();
mScoreEvents.Add(new ScoreEvent(mPlayer.Position, DateTime.Now, Constants.BonusScores()));
mSoundBank.PlayCue("fruiteat");
mBonusPresent = false;
if (mBonusEaten.ContainsKey(Constants.BonusSprite())) {
mBonusEaten[Constants.BonusSprite()]++;
} else {
mBonusEaten.Add(Constants.BonusSprite(), 1);
}
}
// Remove bonus if time's up
if (mBonusPresent && ((DateTime.Now - mBonusSpawnedTime) > TimeSpan.FromSeconds(10))) {
mBonusPresent = false;
}
// Detect collision between ghosts and the player
foreach (Ghost ghost in mGhosts) {
Rectangle playerArea = new Rectangle((mPlayer.Position.Tile.X * 16) + mPlayer.Position.DeltaPixel.X, (mPlayer.Position.Tile.Y * 16) + mPlayer.Position.DeltaPixel.Y, 26, 26);
Rectangle ghostArea = new Rectangle((ghost.Position.Tile.X * 16) + ghost.Position.DeltaPixel.X, (ghost.Position.Tile.Y * 16) + ghost.Position.DeltaPixel.Y, 22, 22);
if (!Rectangle.Intersect(playerArea, ghostArea).IsEmpty) {
// If collision detected, either kill the ghost or kill the pac man, depending on state.
if (ghost.State == EGhostState.Blue) {
GhostSoundsManager.StopLoops();
mSoundBank.PlayCue("EatGhost");
ghost.State = EGhostState.Dead;
mEatenGhosts++;
int bonus = (int)(100 * Math.Pow(2, mEatenGhosts));
Score += bonus;
mScoreEvents.Add(new ScoreEvent(ghost.Position, DateTime.Now, bonus));
LockTimer = TimeSpan.FromMilliseconds(900);
return;
} else if (ghost.State != EGhostState.Dead) {
KillPacMan();
return;
}
// Otherwise ( = the ghost is dead), don't do anything special.
}
}
// Periodically spawn a fruit, when the player isn't on the spawn location
// otherwise we get an infinite fruit spawning bug
if ((Grid.NumCrumps == 180 || Grid.NumCrumps == 80) && mBonusSpawned < 2 && !(mPlayer.Position.Tile.Y == 17 && ((mPlayer.Position.Tile.X == 13 && mPlayer.Position.DeltaPixel.X == 8) || (mPlayer.Position.Tile.X == 14 && mPlayer.Position.DeltaPixel.X == -8)))) {
mBonusPresent = true;
mBonusSpawned++;
mBonusSpawnedTime = DateTime.Now;
}
// Now is the time to move player based on inputs and ghosts based on AI
// If we have returned earlier in the method, they stay in place
mPlayer.Update(gameTime);
mGhosts.ForEach(g => g.Update(gameTime));
base.Update(gameTime);
}
