private IObservable <Unit> PreLoadScene(Scenes[] targetScenes)
{
if (targetScenes.IsEmpty())
{
return(Observable.ReturnUnit());
}
var builder = new StringBuilder();
var observers = new List <IObservable <Unit> >();
foreach (var scene in targetScenes)
{
// キャッシュ済みのシーンがある場合はプリロードしない.
if (cacheScenes.Any(x => x.Identifier == scene))
{
continue;
}
var observer = Observable.Defer(() => Observable.FromMicroCoroutine(() => PreLoadCore(scene, builder)));
observers.Add(observer);
}
if (observers.IsEmpty())
{
return(Observable.ReturnUnit());
}
var sw = System.Diagnostics.Stopwatch.StartNew();
return(observers.WhenAll()
.Do(_ =>
{
sw.Stop();
var time = sw.Elapsed.TotalMilliseconds;
var detail = builder.ToString();
var message = string.Format("PreLoad Complete ({0:F2}ms)\n\n{1}", time, detail);
UnityConsole.Event(ConsoleEventName, ConsoleEventColor, message);
})
.AsUnitObservable());
}