public async ValueTask Step()
{
var sceneGraph = _game.GetService <SceneGraph>();
await _context.ClearRectAsync(0, 0, _game.Display.Size.Width, _game.Display.Size.Height);
await _context.BeginBatchAsync();
await Render(sceneGraph.Root, _game);
await _context.EndBatchAsync();
}
private async ValueTask RenderFrame(SortedList <int, IList <IRenderable> > layers)
{
await _context.ClearRectAsync(0, 0, _game.Display.Size.Width, _game.Display.Size.Height)
.ConfigureAwait(false);
await _context.BeginBatchAsync().ConfigureAwait(false);
foreach (var layer in layers.Values)
{
foreach (var renderable in layer)
{
await renderable.Render(_game, _context).ConfigureAwait(false);
}
}
await _context.EndBatchAsync().ConfigureAwait(false);
}
public async ValueTask Render()
{
await _context.ClearRectAsync(0, 0, _width, _height);
await _context.BeginBatchAsync();
await _context.SetFillStyleAsync("white");
await _context.SetFontAsync("32px consolas");
var text = $"Points: {_points.ToString("D3")} High score: {HighScore} {HighScoreName} Lives: {_lives.ToString("D3")}";
var length = await _context.MeasureTextAsync(text);
await _context.FillTextAsync(text, _width / 2 - (length.Width / 2), 25);
if (GameOver)
{
await RenderGameOver();
}
else if (Won)
{
await RenderWonGame();
}
else if (Started)
{
await RenderGameFrame();
}
else if (!Started)
{
await _context.SetFillStyleAsync("white");
text = $"Use arrow keys to move, space to fire";
length = await _context.MeasureTextAsync(text);
await _context.FillTextAsync(text, _width / 2 - (length.Width / 2), 150);
text = $"Press space to start";
length = await _context.MeasureTextAsync(text);
await _context.FillTextAsync(text, _width / 2 - (length.Width / 2), 200);
}
await _context.EndBatchAsync();
}