public GameState Update(KeyboardState state, KeyboardState previousState)
{
if (state.IsKeyDown(Keys.Escape) && !previousState.IsKeyDown(Keys.Escape))
{
return(GameState.Title);
}
if (state.IsKeyDown(Keys.Down) && !previousState.IsKeyDown(Keys.Down))
{
this.HyperspaceJump();
}
if (state.IsKeyDown(Keys.Space) && !previousState.IsKeyDown(Keys.Space))
{
this.Shoot();
}
if (state.IsKeyDown(Keys.P) && !previousState.IsKeyDown(Keys.P))
{
this.Pause();
}
if (state.IsKeyDown(Keys.Left))
{
this.Left();
}
if (state.IsKeyDown(Keys.Right))
{
this.Right();
}
var upPressed = state.IsKeyDown(Keys.Up);
this.Thrust(upPressed);
//Draw(_screenCanvas, windowClientBounds.Width, windowClientBounds.Height, _score);
if (_paused)
{
//if (_iPauseTimer > 30)
//{
// sc.AddText("PAUSE", Justify.Center, 2500, 200, 400, width, height);
//}
_iPauseTimer--;
if (_iPauseTimer < 0)
{
_iPauseTimer = PauseInterval;
}
}
else
{
if (!Ship.IsAlive() && _explosions.Count() == 0)
{
if (!_score.HasReserveShips())
{
_inProcess = false;
}
else if (AsteroidBelt.IsCenterSafe())
{
_score.UseNewShip();
Ship = new Ship();
}
}
if (_explosions.Count() == 0 && !AsteroidBelt.Any())
{
_iLevel++;
AsteroidBelt.StartBelt(_iLevel, AsteroidSize.Large);
}
Ship.Move();
foreach (var bullet in _shipBullets)
{
bullet.Move();
}
AsteroidBelt.Move();
_explosions.Move();
foreach (var bullet in _shipBullets)
{
var point = bullet.GetCurrentLocation();
if (!bullet.Available() && CheckPointInAsteroid(point, _score))
{
_explosions.AddExplosion(point);
bullet.Disable();
}
}
if (Ship.IsAlive())
{
foreach (var shipPoint in Ship.PointsTransformed)
{
var currLoc = Ship.GetCurrentLocation();
var point = new Point(shipPoint.X + currLoc.X, shipPoint.Y + currLoc.Y);
if (!CheckPointInAsteroid(point, _score))
{
continue;
}
ExplodeShip();
break;
}
}
}
// return the state that we should move to, title or game
return(this.IsDone() ? GameState.Title : GameState.Game);
}