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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
commit 4407854e9c
32 changed files with 1250 additions and 209 deletions
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18
Source/Core/Core/NetPlayClient.h
View file

@ -7,10 +7,13 @@
#include <SFML/Network/Packet.hpp>
#include <array>
#include <map>
#include <memory>
#include <mutex>
#include <optional>
#include <string>
#include <thread>
#include <vector>
#include "Common/CommonTypes.h"
#include "Common/Event.h"
#include "Common/SPSCQueue.h"
@ -18,6 +21,11 @@
#include "Core/NetPlayProto.h"
#include "InputCommon/GCPadStatus.h"
namespace UICommon
{
class GameFile;
}
namespace NetPlay
{
class NetPlayUI
@ -26,6 +34,7 @@ public:
virtual ~NetPlayUI() {}
virtual void BootGame(const std::string& filename) = 0;
virtual void StopGame() = 0;
virtual bool IsHosting() const = 0;
virtual void Update() = 0;
virtual void AppendChat(const std::string& msg) = 0;
@ -38,8 +47,11 @@ public:
virtual void OnConnectionLost() = 0;
virtual void OnConnectionError(const std::string& message) = 0;
virtual void OnTraversalError(TraversalClient::FailureReason error) = 0;
virtual void OnSaveDataSyncFailure() = 0;
virtual bool IsRecording() = 0;
virtual std::string FindGame(const std::string& game) = 0;
virtual std::shared_ptr<const UICommon::GameFile> FindGameFile(const std::string& game) = 0;
virtual void ShowMD5Dialog(const std::string& file_identifier) = 0;
virtual void SetMD5Progress(int pid, int progress) = 0;
virtual void SetMD5Result(int pid, const std::string& result) = 0;
@ -159,6 +171,10 @@ private:
void SendStartGamePacket();
void SendStopGamePacket();
void SyncSaveDataResponse(bool success);
bool DecompressPacketIntoFile(sf::Packet& packet, const std::string& file_path);
std::optional<std::vector<u8>> DecompressPacketIntoBuffer(sf::Packet& packet);
void UpdateDevices();
void AddPadStateToPacket(int in_game_pad, const GCPadStatus& np, sf::Packet& packet);
void SendWiimoteState(int in_game_pad, const NetWiimote& nw);
@ -184,6 +200,8 @@ private:
bool m_should_compute_MD5 = false;
Common::Event m_gc_pad_event;
Common::Event m_wii_pad_event;
u8 m_sync_save_data_count = 0;
u8 m_sync_save_data_success_count = 0;
u32 m_timebase_frame = 0;
};