private void GetStreamProviderAndVirtualPath(ViewModels.GameSystemVM system, IFile file, IFolder rootFolder, out IStreamProvider provider, out string mainFileVirtualPath)
{
IStreamProvider romProvider;
if (rootFolder == null)
{
mainFileVirtualPath = $"{VFS.RomPath}{Path.DirectorySeparatorChar}{file.Name}";
romProvider = new SingleFileStreamProvider(mainFileVirtualPath, file);
}
else
{
mainFileVirtualPath = file.Path.Substring(rootFolder.Path.Length + 1);
mainFileVirtualPath = $"{VFS.RomPath}{Path.DirectorySeparatorChar}{mainFileVirtualPath}";
romProvider = new FolderStreamProvider(VFS.RomPath, rootFolder);
}
var systemProvider = new FolderStreamProvider(VFS.SystemPath, new WinRTFolder(system.Core.SystemFolder));
var saveProvider = new FolderStreamProvider(VFS.SavePath, new WinRTFolder(system.Core.SaveGameFolder));
var combinedProvider = new CombinedStreamProvider(new HashSet <IStreamProvider> {
romProvider, systemProvider, saveProvider
});
provider = combinedProvider;
}
public async Task <bool> StartGameAsync(Shared.ViewModels.GameSystemVM system, IFile file, IFolder rootFolder = null)
{
ViewModels.GameSystemVM nativeSystem = (ViewModels.GameSystemVM)system;
if (CoreRunner == null)
{
RootFrame.Navigate(typeof(GamePlayerPage));
}
else
{
await CoreRunner.UnloadGameAsync();
}
StreamProvider?.Dispose();
StreamProvider = null;
string virtualMainFilePath = null;
if (nativeSystem.Core.NativeArchiveSupport || !ArchiveExtensions.Contains(Path.GetExtension(file.Name)))
{
IStreamProvider streamProvider;
GetStreamProviderAndVirtualPath(nativeSystem, file, rootFolder, out streamProvider, out virtualMainFilePath);
StreamProvider = streamProvider;
}
else
{
var archiveProvider = new ArchiveStreamProvider(VFS.RomPath, file);
await archiveProvider.InitializeAsync();
StreamProvider = archiveProvider;
var entries = await StreamProvider.ListEntriesAsync();
virtualMainFilePath = entries.FirstOrDefault(d => nativeSystem.SupportedExtensions.Contains(Path.GetExtension(d)));
}
//Navigation should cause the player page to load, which in turn should initialize the core runner
while (CoreRunner == null)
{
await Task.Delay(100);
}
if (virtualMainFilePath == null)
{
return(false);
}
nativeSystem.Core.OpenFileStream = OnCoreOpenFileStream;
nativeSystem.Core.CloseFileStream = OnCoreCloseFileStream;
var loadSuccessful = false;
try
{
loadSuccessful = await CoreRunner.LoadGameAsync(nativeSystem.Core, virtualMainFilePath);
}
catch
{
await StopGameAsync();
return(false);
}
if (loadSuccessful)
{
GameStarted(this);
}
else
{
await StopGameAsync();
return(false);
}
return(loadSuccessful);
}
