public static GraphicEntity Build(IEntityManager context, IAppWindow window)
{
var view = context.CreateEntity(new ElementTag("EngineInfo"));
view//.AddComponent(new WindowHeaderUpdaterComponent(window))
.AddComponent(new InputInfoComponent())
.AddComponent(PerfomanceComponent.Create(0, 0));
return(view);
}
void Loop()
{
System.Threading.Thread.CurrentThread.Name = "Game Loop";
var imanager = Window.InputManager;
//first synchronization
Context.GetEntityManager().Synchronize(Thread.CurrentThread.ManagedThreadId);
imanager.Synchronize(Thread.CurrentThread.ManagedThreadId);
var speed = new Stopwatch();
var any = Context
.GetEntityManager()
.GetEntities()
.Where(x => x.Has <PerfomanceComponent>());
ElementTag engineInfoTag;
if (any.Any())
{
engineInfoTag = any.Single().Tag;
}
double millisec = oneFrameMilliseconds;
while (Window.IsActive && !token.IsCancellationRequested)
{
speed.Restart();
imanager.Synchronize(Thread.CurrentThread.ManagedThreadId);
OnSynchronizing();
var eman = Context.GetEntityManager();
Rendering(eman, imanager, millisec);
millisec = speed.ElapsedMilliseconds;
if (millisec < oneFrameMilliseconds)
{
Thread.Sleep((int)(oneFrameMilliseconds - millisec));
}
speed.Stop();
millisec = speed.ElapsedMilliseconds;
eman.GetEntity(engineInfoTag)
.UpdateComponent(PerfomanceComponent.Create(millisec, (int)(total / millisec)));
//Debug.WriteLine($"FPS {(int)(total / speed.ElapsedMilliseconds)} / {speed.ElapsedMilliseconds} ms");
notify.NotifyRender(eman.GetEntities().ToArray());
}
Window.InputManager.Dispose();
Context.Dispose();
}
bool Rendering(IEntityManager emanager, IInputManager imanager, double millisec, bool changed)
{
var syncContext = Context.GetSynchronizationContext();
var isnap = InputManager.GetInputSnapshot();
changed = changed || syncContext.HasChanges;
if (isnap.Events.Any() || changed)
{
emanager
.GetEntity(WorldTag)
.UpdateComponent(PerfomanceComponent.Create(millisec, total, millisec));
}
syncContext.Synchronize(managedThreadId);
if (!isnap.Events.Any() && !changed) //no input no rendering
{
return(false);
}
var snapshot = CreateSceneSnapshot(isnap, TimeSpan.FromMilliseconds(millisec));// new SceneSnapshot(Window, notificator, viewport, Octree, ishapshot, TimeSpan.FromMilliseconds(millisec));
foreach (var sys in Context.GetSystemManager().GetSystems())
{
try {
sys.Execute(snapshot);
//run synchronization after each exetuted system, to synchronize state for the next system
syncContext.Synchronize(managedThreadId);
} catch (Exception ex) {
Context.Logger.Error(ex);
#if !DEBUG
throw ex;
#endif
}
}
return(true);
}