protected override void Initialize()
{
//create a rectangle that is the same size as the screen
viewPortRect = new Rectangle(0, 0, graphics.GraphicsDevice.Viewport.Width, graphics.GraphicsDevice.Viewport.Height);
//initialize asteroids
Asteroid.Initialize(graphics);
//initialize player debris
PlayerDebris.Initialize(graphics);
base.Initialize();
}
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
if (gameState == "menu") //update this part only if the game is at the menu
{
//if enter key is pressed, start the game
KeyboardState kState = Keyboard.GetState();
if (kState.IsKeyDown(Keys.Enter))
{
gameState = "game";
}
}
if (gameState == "gameover" || gameState == "gamecomplete") //update this part ony if the game os over or complete
{
//if enter key is pressed, start the game
KeyboardState kState = Keyboard.GetState();
if (kState.IsKeyDown(Keys.Enter))
{
gameState = "game";
Player.life = 3; //reset number of player lifes
//delete all asteroids remain from previous game
foreach (Asteroid a in Asteroid.largeAsteroids)
{
a.Destroy = true;
}
foreach (Asteroid a in Asteroid.mediumAsteroids)
{
a.Destroy = true;
}
foreach (Asteroid a in Asteroid.smallAsteroids)
{
a.Destroy = true;
}
//create new asteroids for the new game
CreateLargeAsteroids();
}
}
if (gameState == "game" || gameState == "gameover") //update this part is the game is running or game over
{
/******************
* PLAYER DEBRIS
*******************/
PlayerDebris.Update(gameTime);
}
if (gameState == "game") //update all this if the game is running
{
/******************
* PLAYER
*******************/
//update player
player.Update(gameTime);
//check collision between the player and asteroids, only of player is not destroyed
if (player.Destroyed == false)
{
if (player.CanDestroy == true) //if player can be destroyed
{
foreach (Asteroid a in Asteroid.largeAsteroids)
{
if (Vector2.Distance(a.Position, player.Position) < a.Radius)
{
player.Destroyed = true;
//create player parts in position of the player
for (var i = 0; i < spritePlayerDebris.Length; i++)
{
PlayerDebris.debris.Add(new PlayerDebris(player.Position, spritePlayerDebris[i], player.Angle));
ExplosionSound.Play();
}
player.Position = new Vector2(graphics.GraphicsDevice.Viewport.Width / 2, graphics.GraphicsDevice.Viewport.Height / 2);
Player.life--;
player.CanDestroy = false;
//if player life = 0 then set game to game over
if (Player.life == 0)
{
SetGameOver(gameTime);
}
}
}
foreach (Asteroid a in Asteroid.mediumAsteroids)
{
if (Vector2.Distance(a.Position, player.Position) < a.Radius)
{
player.Destroyed = true;
//create player parts in position of the player
for (var i = 0; i < spritePlayerDebris.Length; i++)
{
PlayerDebris.debris.Add(new PlayerDebris(player.Position, spritePlayerDebris[i], player.Angle));
ExplosionSound.Play();
}
player.Position = new Vector2(graphics.GraphicsDevice.Viewport.Width / 2, graphics.GraphicsDevice.Viewport.Height / 2);
Player.life--;
player.CanDestroy = false;
//if player life = 0 then set game to game over
if (Player.life == 0)
{
SetGameOver(gameTime);
}
}
}
foreach (Asteroid a in Asteroid.smallAsteroids)
{
if (Vector2.Distance(a.Position, player.Position) < a.Radius)
{
player.Destroyed = true;
//create player parts in position of the player
for (var i = 0; i < spritePlayerDebris.Length; i++)
{
PlayerDebris.debris.Add(new PlayerDebris(player.Position, spritePlayerDebris[i], player.Angle));
ExplosionSound.Play();
}
player.Position = new Vector2(graphics.GraphicsDevice.Viewport.Width / 2, graphics.GraphicsDevice.Viewport.Height / 2);
Player.life--;
player.CanDestroy = false;
//if player life = 0 then set game to game over
if (Player.life == 0)
{
SetGameOver(gameTime);
}
}
}
}
}
else //if player is destroyed, check if player debris is present, if there is no more debris, set destroy to false
{
if (PlayerDebris.debris.Count == 0)
{
player.Destroyed = false;
}
}
/***************
* BULLET
****************/
//update bullet
foreach (Bullet b in Bullet.bullets)
{
b.Update(gameTime, viewPortRect);
}
//if bullet is in collision with asteroid, and the bullet is not set to be destroyed, play explosion sound and set bullet and asteroid to destroy and create smaller asteroids in position
foreach (Bullet b in Bullet.bullets)
{
// check collision with large asteroid
foreach (Asteroid a in Asteroid.largeAsteroids)
{
if (Vector2.Distance(b.Position, a.Position) < a.Radius && b.Destroy == false)
{
b.Destroy = true;
a.Destroy = true;
var randomPitch = (rnd.NextDouble() * 1.8) - 1;
ExplosionSound.Play(1, (float)randomPitch, 1);
//create 2 medium asteroids in position of the large asteroid
for (var i = 0; i < 2; i++)
{
Asteroid.mediumAsteroids.Add(new Asteroid(a.Position, spriteMediumAsteroid[rnd.Next(0, 2)]));
}
//create some debris
CreateDebris(20, a.Position);
}
}
// check collision with medium asteroid
foreach (Asteroid a in Asteroid.mediumAsteroids)
{
if (Vector2.Distance(b.Position, a.Position) < a.Radius && b.Destroy == false)
{
b.Destroy = true;
a.Destroy = true;
var randomPitch = (rnd.NextDouble() * 1.8) - 1;
ExplosionSound.Play(1, (float)randomPitch, 1);
//create 3 small asteroids in position of the medium asteroid
for (var i = 0; i < 3; i++)
{
Asteroid.smallAsteroids.Add(new Asteroid(a.Position, spriteSmallAsteroid[rnd.Next(0, 2)]));
}
//create some debris
CreateDebris(10, a.Position);
}
}
// check collision with small asteroid
foreach (Asteroid a in Asteroid.smallAsteroids)
{
if (Vector2.Distance(b.Position, a.Position) < a.Radius && b.Destroy == false)
{
b.Destroy = true;
a.Destroy = true;
var randomPitch = (rnd.NextDouble() * 1.8) - 1;
ExplosionSound.Play(1, (float)randomPitch, 1);
//create some debris
CreateDebris(5, a.Position);
}
}
}
//remove bullets marked to be destroyed
Bullet.bullets.RemoveAll(b => b.Destroy == true);
//remove asteroids marked to be destroyed
Asteroid.largeAsteroids.RemoveAll(a => a.Destroy == true);
Asteroid.mediumAsteroids.RemoveAll(a => a.Destroy == true);
Asteroid.smallAsteroids.RemoveAll(a => a.Destroy == true);
//delete any particles if faded out
Particle.particles.RemoveAll(p => p.Color.A == 0);
/**************
* PARTICLES
***************/
//update particles (fade all particles out the same way)
foreach (Particle p in Particle.particles)
{
p.Update(gameTime);
}
//update debris particles (move only debris particles in to random angle slowly)
foreach (DebrisParticle d in Particle.particles)
{
d.Update();
}
} //end of if statement check if the game is running
/******************
* ASTEROID
*******************/
//update asteroids
foreach (Asteroid a in Asteroid.largeAsteroids)
{
a.Update(gameTime);
}
foreach (Asteroid a in Asteroid.mediumAsteroids)
{
a.Update(gameTime);
}
foreach (Asteroid a in Asteroid.smallAsteroids)
{
a.Update(gameTime);
}
//if all asterods destroyed, set game to complete
if (Asteroid.largeAsteroids.Count == 0)
{
if (Asteroid.mediumAsteroids.Count == 0)
{
if (Asteroid.smallAsteroids.Count == 0)
{
gameState = "gamecomplete";
}
}
}
base.Update(gameTime);
}
