/// <summary>
/// Collisions the detection.
/// </summary>
private void CollisionDetection()
{
foreach (var asteroid in AsteroidsManager.Asteroids)
{
foreach (var shot in ShotManager.Shots)
{
if (!shot.IsDead & !asteroid.IsDead & shot.IsCircleCollide(asteroid))
{
shot.IsDead = true;
asteroid.IsDead = true;
score += 1000;
ExplosionsManager.AddExplosion(asteroid.Center);
if (asteroid.Scale > 0.5f)
{
var scale = asteroid.Scale == 1 ? 0.75f : 0.5f;
AsteroidsManager.AddAsteroid(scale, asteroid.Center);
AsteroidsManager.AddAsteroid(scale, asteroid.Center);
}
}
}
if (!ship.IsDead & !asteroid.IsDead & ship.IsCircleCollide(asteroid))
{
ship.IsDead = true;
ExplosionsManager.AddExplosion(ship.Center);
respawnCounter = MaxRespawnCounter;
SoundManager.StopThrust();
}
}
}
/// <summary>
/// This is called when the game should draw itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Draw(GameTime gameTime)
{
//GraphicsDevice.Clear(Color.CornflowerBlue);
spriteBatch.Begin();
spriteBatch.Draw(background, Vector2.Zero, Color.White);
bgScroll.Draw(spriteBatch);
if (gameState == GameState.Menu)
{
spriteBatch.Draw(logo, new Vector2((Width - logo.Width) / 2, 100), Color.White);
if (textEnable)
{
spriteBatch.DrawString(pericles14, "Press Space to continue", new Vector2(280, 300), Color.White);
}
}
bgScroll2.Draw(spriteBatch);
if (gameState == GameState.Play)
{
ship.Draw(spriteBatch);
ShotManager.Draw(spriteBatch);
AsteroidsManager.Draw(spriteBatch);
ExplosionsManager.Draw(spriteBatch);
spriteBatch.DrawString(pericles14, $"Score: {score}", new Vector2(10, 10), Color.White);
}
spriteBatch.End();
base.Draw(gameTime);
}
/// <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)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
bgScroll.Update(gameTime);
bgScroll2.Update(gameTime);
if (gameState == GameState.Menu)
{
textCounter--;
if (textCounter <= 0)
{
textCounter = MaxRespawnCounter;
textEnable = !textEnable;
}
if (InputHandler.IsKeyPressed(Keys.Space))
{
gameState = GameState.Play;
}
}
else if (gameState == GameState.Play)
{
if (ship.IsDead)
{
respawnCounter--;
if (respawnCounter < 0)
{
ship.Center = new Vector2(Width / 2, Height / 2);
ship.Velocity = Vector2.Zero;
ship.IsDead = false;
}
}
else
{
if (InputHandler.IsKeyDown(Keys.Left))
{
ship.Rotation -= 0.05f;
}
if (InputHandler.IsKeyDown(Keys.Right))
{
ship.Rotation += 0.05f;
}
ship.Thrust = InputHandler.IsKeyDown(Keys.Up);
if (InputHandler.IsKeyDown(Keys.LeftControl))
{
ShotManager.AddShot(ship.Center + ship.Heading * ship.Radius, ship.Heading * 3);
}
}
ship.Update(gameTime);
CollisionDetection();
ShotManager.Update(gameTime);
AsteroidsManager.Update(gameTime);
ExplosionsManager.Update(gameTime);
}
base.Update(gameTime);
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
background = Content.Load <Texture2D>(@"Images\nebula_blue.f2014");
bgScroll = new BgScroll(Content.Load <Texture2D>(@"Images\debris2_blue"))
{
DxOffset = 0.5f
};
bgScroll2 = new BgScroll(Content.Load <Texture2D>(@"Images\debris2_blue"))
{
Flip = true
};
ship = new Ship(Content.Load <Texture2D>(@"Images\double_ship"), new Vector2(Width / 2, Height / 2));
ShotManager.Initialize(Content.Load <Texture2D>(@"Images\shot2"));
AsteroidsManager.Initialize(Content.Load <Texture2D>(@"Images\asteroid_blue"));
AsteroidsManager.AddAsteroids(5);
pericles14 = Content.Load <SpriteFont>(@"Fonts\Pericles14");
ExplosionsManager.Initialize(Content.Load <Texture2D>(@"Images\explosion_alpha"));
SoundManager.Initialize(Content, Width);
logo = Content.Load <Texture2D>(@"Images\asteroids");
}
