protected override void LoadContent()
{
pieces = new List <SnakePiece>();
spriteBatch = new SpriteBatch(GraphicsDevice);
SnakePiece head = new SnakePiece(Content.Load <Texture2D>("Nyan"), new Vector2(1, 1), Color.White, Direction.Right);
dead = false;
font = Content.Load <SpriteFont>("Font");
catSoundEffect = Content.Load <SoundEffect>("cat_screech2");
pieces.Add(head);
r = new Random();
nom = new Food(Content.Load <Texture2D>("food"), new Vector2(r.Next(0, 540), r.Next(0, 540)), Color.White);
}
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
currentTime += gameTime.ElapsedGameTime;
if (currentTime > waitTime)
{
if (dead == false)
{
foreach (SnakePiece piece in pieces)
{
piece.Update(gameTime);
base.Update(gameTime);
}
for (int i = pieces.Count - 1; i > 0; i--)
{
pieces[i].Direction = pieces[i - 1].Direction;
}
}
currentTime = TimeSpan.Zero;
}
ks = Keyboard.GetState();
nom.Update(gameTime);
pieces[0].Move(ks, Keys.Up, Keys.Down, Keys.Left, Keys.Right);
for (int i = 2; i < pieces.Count; i++)
{
if (pieces[i].hitbox.Intersects(pieces[0].hitbox))
{
dead = true;
}
}
if (pieces[0].position.X <= 0)
{
pieces[0].Direction = Direction.None;
dead = true;
}
if (pieces[0].position.X >= 600 - pieces[0].image.Width)
{
pieces[0].Direction = Direction.None;
dead = true;
}
if (pieces[0].position.Y <= 0)
{
pieces[0].Direction = Direction.None;
dead = true;
}
if (pieces[0].position.Y >= 600 - pieces[0].image.Width)
{
pieces[0].Direction = Direction.None;
dead = true;
}
if (dead)
{
if (catSoundEffectInstance == null)
{
catSoundEffectInstance = catSoundEffect.CreateInstance();
catSoundEffect.Play();
}
if (ks.IsKeyDown(Keys.R))
{
while (pieces.Count > 1)
{
pieces.Remove(pieces[1]);
}
pieces[0].Direction = Direction.Right;
pieces[0].position = new Vector2(1, 1);
dead = false;
score = 0;
}
}
if (pieces[0].hitbox.Intersects(nom.hitbox))
{
nom.position = new Vector2(r.Next(0, 540), r.Next(0, 540));
SnakePiece tailPiece = pieces[pieces.Count - 1];
SnakePiece newPiece = new SnakePiece(Content.Load <Texture2D>("trail"), new Vector2(tailPiece.position.X, tailPiece.position.Y), Color.White, tailPiece.Direction);
score++;
if (tailPiece.Direction == Direction.Up)
{
newPiece.position = new Vector2(newPiece.position.X, newPiece.position.Y + (tailPiece.image.Height));
}
if (tailPiece.Direction == Direction.Down)
{
newPiece.position = new Vector2(newPiece.position.X, newPiece.position.Y - (tailPiece.image.Height));
}
if (tailPiece.Direction == Direction.Left)
{
newPiece.position = new Vector2(newPiece.position.X + tailPiece.image.Width, (newPiece.position.Y));
}
if (tailPiece.Direction == Direction.Right)
{
newPiece.position = new Vector2(newPiece.position.X - tailPiece.image.Width, (newPiece.position.Y));
}
pieces.Add(newPiece);
}
}