Beispiel #1
0
        public void StartAsyncLoad(string screenType, Action afterLoaded = null)
        {
            if (AsyncLoadingState == AsyncLoadingState.LoadingScreen)
            {
#if DEBUG
                throw new InvalidOperationException("This Screen is already loading a Screen of type " + asyncScreenTypeToLoad + ".  This is a DEBUG-only exception");
#endif
            }
            else if (AsyncLoadingState == AsyncLoadingState.Done)
            {
#if DEBUG
                throw new InvalidOperationException("This Screen has already loaded a Screen of type " + asyncScreenTypeToLoad + ".  This is a DEBUG-only exception");
#endif
            }
            else
            {
                AsyncLoadingState     = AsyncLoadingState.LoadingScreen;
                asyncScreenTypeToLoad = ScreenManager.MainAssembly.GetType(screenType);

                if (asyncScreenTypeToLoad == null)
                {
                    throw new Exception("Could not find the type " + screenType);
                }

                                #if REQUIRES_PRIMARY_THREAD_LOADING
                // We're going to do the "async" loading on the primary thread
                // since we can't actually do it async.
                PerformAsyncLoad();
                if (afterLoaded != null)
                {
                    afterLoaded();
                }
                                #else
                mNumberOfThreadsBeforeAsync = FlatRedBallServices.GetNumberOfThreadsToUse();

                FlatRedBallServices.SetNumberOfThreadsToUse(1);

                Action action;

                if (afterLoaded == null)
                {
                    action = (Action)PerformAsyncLoad;
                }
                else
                {
                    action = () =>
                    {
                        PerformAsyncLoad();

                        // We're going to add this to the instruction manager so it executes on the main thread:
                        InstructionManager.AddSafe(new DelegateInstruction(afterLoaded));
                    };
                }



#if WINDOWS_8 || UWP
                System.Threading.Tasks.Task.Run(action);
#else
                ThreadStart threadStart = new ThreadStart(action);
                Thread      thread      = new Thread(threadStart);
                thread.Start();
#endif
                                #endif
            }
        }