/// <summary>
/// Initializes a new instance of the <see cref="DebugGraphicsScreen" /> class.
/// </summary>
/// <param name="services">The services.</param>
public DebugGraphicsScreen(IServiceLocator services)
: base(services?.GetInstance <IGraphicsService>())
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
Coverage = GraphicsScreenCoverage.Partial;
_spriteBatch = GraphicsService.GetSpriteBatch();
_whiteTexture = GraphicsService.GetDefaultTexture2DWhite();
var contentManager = services.GetInstance <ContentManager>();
var spriteFont = contentManager.Load <SpriteFont>("DigitalRune.Editor.Game/Fonts/DejaVuSans");
DebugRenderer = new DebugRenderer(GraphicsService, spriteFont);
_internalDebugRenderer = new DebugRenderer(GraphicsService, spriteFont);
// To count the update frame rate, we handle the GameLogicUpdating event.
// (We cannot use GraphicsScreen.OnUpdate because it is only called at the same rate if
// the graphics screen is registered in the graphics service. If it is not registered,
// then OnUpdate and OnRender are always called together.)
var editor = services.GetInstance <IEditorService>();
_gameExtension = editor.Extensions.OfType <GameExtension>().FirstOrDefault();
if (_gameExtension != null)
{
_gameExtension.GameLogicUpdating += OnGameLogicUpdating;
}
}
private void UpdateTimer()
{
if (WindowsHelper.IsInDesignMode)
{
return;
}
if (_gameTimer == null)
{
if (AssociatedObject.IsLoaded)
{
var editor = EditorHelper.GetEditor(AssociatedObject).ThrowIfMissing();
_gameTimer = editor.Services.GetInstance <IGameTimer>().ThrowIfMissing();
_gameExtension = editor.Extensions.OfType <GameExtension>().FirstOrDefault().ThrowIfMissing();
}
else
{
AssociatedObject.Loaded += (s, e) => UpdateTimer();
return;
}
}
// Start/stop timer based on current state.
var view = AssociatedObject;
if (view != null && view.IsFocused && IsEnabled)
{
_gameExtension.GameLoopNewFrame += OnTick;
}
else
{
_gameExtension.GameLoopNewFrame -= OnTick;
}
}