public override void Update()
{
//Check if the wave is destroyed:
if (_current.IsEmpty())
{
//Spawn new wave
DestroyObject(_current);
_current = (Wave)CreateAndReturnObject(typeof(Wave), _mainPosition);
//Reset barrier blocks
foreach (var obj in ObjectManager.Objects.Where(obj => obj.GetType() == typeof(Block))) //Destroy old ones
{
DestroyObject(obj);
}
BlockMaker.MakeANewSetOfBlocks();
//Level up the invasion
for (int i = 0; i < _waveCounter; i++)
{
_current.LevelUp();
}
}
//Check for a game over:
if (_current.GetInvadersRectangle().Bottom >= _gameOverLine)
{
//If game is indeed over than destroy everything and make a game over sign at the middle of the screen
ObjectManager.Clear();
int screenWidth = SpaceInvaders.Device.Viewport.Width;
int screenHeight = SpaceInvaders.Device.Viewport.Height;
CreateObject(typeof(GameOverSign), new Vector2(screenWidth / 2, screenHeight / 2));
}
}
public override void Create(GameObject createdObject)
{
if (createdObject == this)
{
_mainPosition = Sprite.Position;
_current = (Wave)CreateAndReturnObject(typeof(Wave), _mainPosition);
}
}