/// <summary>
///
/// </summary>
public GameModel()
{
GameModel.XDistanceBetweenSprites = 100;
GameModel.YDistanceBetweenSprites = 300;
GameModel.YDistanceBetweenStars = 50;
GameModel.YDistanceBetweenStars = 200;
GameModel.YDistanceBetweenBlueStars = 50;
GameModel.YDistanceBetweenSmallStars = 200;
GameModel.LeftDisplayBorder = 50;
GameModel.RightDisplayBorder = 200;
GameModel.BottomDisplayBorder = 140;
_background = new Background();
_enemies[0] = new Enemy1(4, 3);
_enemies[1] = new Enemy2(4, 3);
_enemies[2] = new Enemy3(4, 3);
_enemies[3] = new Enemy4(4, 3);
_spaceShip = new AnimatedSprite(5, 4);
for (int i = 0; i < _meteors.Length; i++)
_meteors[i] = new Meteor(9, 8);
for (int i = 0; i < _stars.Length; i++)
{
_stars[i] = new Star(15, 7);
_stars[i].Speed = new Vector2(0, 0.5f);
}
for (int i = 0; i < _fastStars.Length; i++)
{
_fastStars[i] = new Star(15, 10);
_fastStars[i].Speed = new Vector2(0, 1f);
}
_InitializeLives();
_progress = new ProgressSprite();
}
/// <summary>
///
/// </summary>
/// <param name="sprites"></param>
/// <param name="framesCount"></param>
/// <param name="pointsForKill"></param>
private void _SolveEnemiesCollisions(AnimatedSprite[] sprites, int framesCount,
uint pointsForKill)
{
// Solve collisions between boxes.
var distance = _window.ClientBounds.Width - GameModel.XDistanceBetweenSprites;
foreach (var enemy in sprites)
{
var maxValue = distance - enemy.SpriteTexture.Width / 4;
var rocket = new Rocket();
if ((rocket = _IsRocketBitTheEnemy(enemy.BoundingBox)) != null)
{
// Recalculate position of the bugs... (could be BOOOM! or POINTS++).
enemy.SpritePosition = new Vector2(
_randomizer.Next(GameModel.LeftDisplayBorder, maxValue),
-GameModel.YDistanceBetweenSprites);
_model.Rockets.Remove(rocket);
AudioPlayer.PlayEnemyDestroyed();
GameState.CurrentScore += pointsForKill;
}
if (_model.SpaceShip.BoundingBox.Intersects(enemy.BoundingBox))
{
// Recalculate position of the bugs... (could be BOOOM! or POINTS++).
enemy.SpritePosition = new Vector2(
_randomizer.Next(GameModel.LeftDisplayBorder, maxValue),
-GameModel.YDistanceBetweenSprites);
if (_model.Lives.Count > 1)
{
_model.RemoveLive();
TimeSpan span = AudioPlayer.PlayEnemySuperShoot();
}
else
_GameOver();
}
}
}
/// <summary>
///
/// </summary>
/// <param name="sprites"></param>
/// <param name="xDistanceBetweenSprites"></param>
/// <param name="yDistanceBetweenSprites"></param>
/// <param name="spriteFramesCount"></param>
private void _MoveSprite(AnimatedSprite[] sprites, int xDistanceBetweenSprites,
int yDistanceBetweenSprites, int spriteFramesCount)
{
var distance = _window.ClientBounds.Width - xDistanceBetweenSprites;
for (int i = 0; i < sprites.Length; i++)
{
sprites[i].SpritePosition += sprites[i].Speed;
// When sprite comes over the Screen, bring him back
if (sprites[i].SpritePosition.Y > _window.ClientBounds.Height)
{
sprites[i].SpritePosition = new Vector2(_randomizer.Next(
GameModel.LeftDisplayBorder,
distance - sprites[i].SpriteTexture.Width / spriteFramesCount),
-yDistanceBetweenSprites);
}
}
}