public void AsteroidControl()
{
// If enough time has passed, a new asteroid is created
if (tickCounter >= asteroidInterval)
{
// Randomizes where the asteroid spawns from
asteroidDirection = rand.Next(1, 5);
// Declares the direction that the asteroid will travel
switch (asteroidDirection)
{
case 1:
Asteroids newDownAsteroid = new Asteroids(asteroidSize, 245, 0, "Down");
asteroidList.Add(newDownAsteroid);
break;
case 2:
Asteroids newLeftAsteroid = new Asteroids(asteroidSize, 0, 245, "Right");
asteroidList.Add(newLeftAsteroid);
break;
case 3:
Asteroids newUpAsteroid = new Asteroids(asteroidSize, 245, 500, "Up");
asteroidList.Add(newUpAsteroid);
break;
case 4:
Asteroids newRightAsteroid = new Asteroids(asteroidSize, 500, 245, "Left");
asteroidList.Add(newRightAsteroid);
break;
}
tickCounter = 0;
}
// Controls how the Asteroid moves
foreach (Asteroids a in asteroidList)
{
if (a.direction == "Up")
{
a.MoveUp(asteroidSpeed);
}
else if (a.direction == "Left")
{
a.MoveLeft(asteroidSpeed);
}
else if (a.direction == "Down")
{
a.MoveDown(asteroidSpeed);
}
else if (a.direction == "Right")
{
a.MoveRight(asteroidSpeed);
}
}
// Checks for a collision between the Ship and an Asteroid
foreach (Asteroids a in asteroidList)
{
if (shipHitBox.shipCollision(a))
{
// Plays a sound effect
if (OptionsScreen.setSoundOptions)
{
crashSound.Play();
}
// Stops the game and switches to the GameOverScreen
gameLoop.Stop();
Form f = this.FindForm();
f.Controls.Remove(this);
GameOverScreen gs = new GameOverScreen();
f.Controls.Add(gs);
return;
}
}
// Checks for a collision between a Lazer and an Asteroid
foreach (Lazers l in lazerList)
{
foreach (Asteroids a in asteroidList)
{
if (a.lazerCollision(l))
{
// Removes the Lazer and Asteroid that collided from their respective lists
playerScore++;
asteroidList.Remove(a);
lazerList.Remove(l);
return;
}
}
}
// Controls the frequency of which Asteroids spawn
if (speedController >= 500 && levelCounter < 8)
{
// Plays a sound effect
if (OptionsScreen.setSoundOptions)
{
levelUpSound.Play();
}
// The higher the level, the more frequently that Asteroids spawn
levelCounter++;
asteroidInterval -= 3;
speedController = 0;
}
// Lets the user know that their level has increased
levelUpLabel.Visible = false;
if (speedController >= 0 && speedController <= 25 && levelCounter > 1 && totalFrameCounter > 200)
{
levelUpLabel.Visible = true;
}
}
/// <summary>
/// Event handler for when the game over event
/// </summary>
void OnGameOver(object sender, PlayerIndexEventArgs e)
{
GameOverScreen gameOverScreen = new GameOverScreen(networkSession);
ScreenManager.AddScreen(gameOverScreen, ControllingPlayer);
}