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NetPlay save data synchronization

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This adds the functionality of sending the host's save data (raw memory
cards, as well as GCI files and Wii saves with a matching GameID) to
all other clients. The data is compressed using LZO1X to greatly reduce
its size while keeping compression/decompression fast. Save
synchronization is enabled by default, and toggleable with a checkbox
in the NetPlay dialog.

On clicking start, if the option is enabled, game boot will be delayed
until all players have received the save data sent by the host. If any
player fails to receive it properly, boot will be cancelled to prevent
desyncs.
This commit is contained in:
Techjar
2018-07-04 17:01:50 -04:00
parent f5e8af7b6c
commit 4407854e9c
32 changed files with 1250 additions and 209 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
Source/Core/Core/WiiRoot.cpp
View File

@ -26,10 +26,10 @@
namespace Core
{
static std::string s_temp_wii_root;
namespace FS = IOS::HLE::FS;
static std::string s_temp_wii_root;
static void InitializeDeterministicWiiSaves(FS::FileSystem* session_fs)
{
const u64 title_id = SConfig::GetInstance().GetTitleID();
@ -52,7 +52,9 @@ static void InitializeDeterministicWiiSaves(FS::FileSystem* session_fs)
(Movie::IsMovieActive() && !Movie::IsStartingFromClearSave()))
{
// Copy the current user's save to the Blank NAND
const auto user_save = WiiSave::MakeNandStorage(configured_fs.get(), title_id);
auto* sync_fs = NetPlay::GetWiiSyncFS();
const auto user_save =
WiiSave::MakeNandStorage(sync_fs ? sync_fs : configured_fs.get(), title_id);
const auto session_save = WiiSave::MakeNandStorage(session_fs, title_id);
WiiSave::Copy(user_save.get(), session_save.get());
}
@ -62,13 +64,26 @@ void InitializeWiiRoot(bool use_temporary)
{
if (use_temporary)
{
s_temp_wii_root = File::CreateTempDir();
if (s_temp_wii_root.empty())
{
ERROR_LOG(IOS_FS, "Could not create temporary directory");
return;
}
s_temp_wii_root = File::GetUserPath(D_USER_IDX) + "WiiSession" DIR_SEP;
WARN_LOG(IOS_FS, "Using temporary directory %s for minimal Wii FS", s_temp_wii_root.c_str());
// If directory exists, make a backup
if (File::Exists(s_temp_wii_root))
{
const std::string backup_path =
s_temp_wii_root.substr(0, s_temp_wii_root.size() - 1) + ".backup" DIR_SEP;
WARN_LOG(IOS_FS, "Temporary Wii FS directory exists, moving to backup...");
// If backup exists, delete it as we don't want a mess
if (File::Exists(backup_path))
{
WARN_LOG(IOS_FS, "Temporary Wii FS backup directory exists, deleting...");
File::DeleteDirRecursively(backup_path);
}
File::CopyDir(s_temp_wii_root, backup_path, true);
}
File::SetUserPath(D_SESSION_WIIROOT_IDX, s_temp_wii_root);
}
else
@ -148,8 +163,11 @@ void InitializeWiiFileSystemContents()
void CleanUpWiiFileSystemContents()
{
if (s_temp_wii_root.empty() || !SConfig::GetInstance().bEnableMemcardSdWriting)
if (s_temp_wii_root.empty() || !SConfig::GetInstance().bEnableMemcardSdWriting ||
NetPlay::GetWiiSyncFS())
{
return;
}
const u64 title_id = SConfig::GetInstance().GetTitleID();
@ -157,6 +175,16 @@ void CleanUpWiiFileSystemContents()
const auto session_save = WiiSave::MakeNandStorage(ios->GetFS().get(), title_id);
const auto configured_fs = FS::MakeFileSystem(FS::Location::Configured);
// FS won't write the save if the directory doesn't exist
const std::string title_path = Common::GetTitleDataPath(title_id);
if (!configured_fs->GetMetadata(IOS::PID_KERNEL, IOS::PID_KERNEL, title_path))
{
configured_fs->CreateDirectory(IOS::PID_KERNEL, IOS::PID_KERNEL, title_path, 0,
{IOS::HLE::FS::Mode::ReadWrite, IOS::HLE::FS::Mode::ReadWrite,
IOS::HLE::FS::Mode::ReadWrite});
}
const auto user_save = WiiSave::MakeNandStorage(configured_fs.get(), title_id);
const std::string backup_path =