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Savestate load undo

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iota97 committed 2021-08-03 11:10:54 +02:00
1 parent 7c769d2511
commit 626dfb5bd7
6 files changed
+91 -18
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Core/SaveState.cpp
+70 -18
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@@ -412,18 +412,19 @@ namespace SaveState
return filename.GetFilename() + " " + sy->T("(broken)");
}
Path GenerateSaveSlotFilename(const Path &gameFilename, int slot, const char *extension)
{
std::string GenerateFullDiskId(const Path &gameFilename) {
std::string discId = g_paramSFO.GetValueString("DISC_ID");
std::string discVer = g_paramSFO.GetValueString("DISC_VERSION");
std::string fullDiscId;
if (discId.empty()) {
discId = g_paramSFO.GenerateFakeID();
discVer = "1.00";
}
fullDiscId = StringFromFormat("%s_%s", discId.c_str(), discVer.c_str());
return StringFromFormat("%s_%s", discId.c_str(), discVer.c_str());
}
std::string filename = StringFromFormat("%s_%d.%s", fullDiscId.c_str(), slot, extension);
Path GenerateSaveSlotFilename(const Path &gameFilename, int slot, const char *extension)
{
std::string filename = StringFromFormat("%s_%d.%s", GenerateFullDiskId(gameFilename).c_str(), slot, extension);
return GetSysDirectory(DIRECTORY_SAVESTATE) / filename;
}
@@ -437,18 +438,6 @@ namespace SaveState
g_Config.iCurrentStateSlot = (g_Config.iCurrentStateSlot + 1) % NUM_SLOTS;
}
void LoadSlot(const Path &gameFilename, int slot, Callback callback, void *cbUserData)
{
Path fn = GenerateSaveSlotFilename(gameFilename, slot, STATE_EXTENSION);
if (!fn.empty()) {
Load(fn, slot, callback, cbUserData);
} else {
auto sy = GetI18NCategory("System");
if (callback)
callback(Status::FAILURE, sy->T("Failed to load state. Error in the file system."), cbUserData);
}
}
static void DeleteIfExists(const Path &fn) {
// Just avoiding error messages.
if (File::Exists(fn)) {
@@ -471,6 +460,63 @@ namespace SaveState
}
}
void LoadSlot(const Path &gameFilename, int slot, Callback callback, void *cbUserData)
{
Path fn = GenerateSaveSlotFilename(gameFilename, slot, STATE_EXTENSION);
if (!fn.empty()) {
// This add only 1 extra state, should we just always enable it?
if (g_Config.bEnableStateUndo) {
Path backup = GetSysDirectory(DIRECTORY_SAVESTATE) / LOAD_UNDO_NAME;
auto saveCallback = [=](Status status, const std::string &message, void *data) {
if (status != Status::FAILURE) {
DeleteIfExists(backup);
File::Rename(backup.WithExtraExtension(".tmp"), backup);
g_Config.sStateLoadUndoGame = GenerateFullDiskId(gameFilename);
Load(fn, slot, callback, cbUserData);
} else if (callback) {
callback(status, message, data);
}
};
if (!backup.empty()) {
Save(backup.WithExtraExtension(".tmp"), -2, saveCallback, cbUserData);
} else {
auto sy = GetI18NCategory("System");
if (callback)
callback(Status::FAILURE, sy->T("Failed to save state for load undo. Error in the file system."), cbUserData);
}
} else {
Load(fn, slot, callback, cbUserData);
}
} else {
auto sy = GetI18NCategory("System");
if (callback)
callback(Status::FAILURE, sy->T("Failed to load state. Error in the file system."), cbUserData);
}
}
bool UndoLoad(const Path &gameFilename, Callback callback, void *cbUserData)
{
if (g_Config.sStateLoadUndoGame != GenerateFullDiskId(gameFilename)) {
auto sy = GetI18NCategory("System");
if (callback)
callback(Status::FAILURE, sy->T("Error: load undo state is from a different game"), cbUserData);
return false;
}
Path fn = GetSysDirectory(DIRECTORY_SAVESTATE) / LOAD_UNDO_NAME;
if (!fn.empty()) {
Load(fn, -2, callback, cbUserData); // Slot number is visual only, -2 will display special message (kinda have to find a better way)
return true;
} else {
auto sy = GetI18NCategory("System");
if (callback)
callback(Status::FAILURE, sy->T("Failed to load state for load undo. Error in the file system."), cbUserData);
return false;
}
}
void SaveSlot(const Path &gameFilename, int slot, Callback callback, void *cbUserData)
{
Path fn = GenerateSaveSlotFilename(gameFilename, slot, STATE_EXTENSION);
@@ -541,6 +587,12 @@ namespace SaveState
return File::Exists(fn);
}
bool HasUndoLoad(const Path &gameFilename)
{
Path fn = GetSysDirectory(DIRECTORY_SAVESTATE) / LOAD_UNDO_NAME;
return File::Exists(fn) && g_Config.sStateLoadUndoGame == GenerateFullDiskId(gameFilename);
}
bool operator < (const tm &t1, const tm &t2) {
if (t1.tm_year < t2.tm_year) return true;
if (t1.tm_year > t2.tm_year) return false;
@@ -752,7 +804,7 @@ namespace SaveState
// Use the state's latest version as a guess for saveStateInitialGitVersion.
result = CChunkFileReader::Load(op.filename, &saveStateInitialGitVersion, state, &errorString);
if (result == CChunkFileReader::ERROR_NONE) {
callbackMessage = slot_prefix + sc->T("Loaded State");
callbackMessage = op.slot != -2 ? slot_prefix + sc->T("Loaded State") : sc->T("State load undone");
callbackResult = Status::SUCCESS;
hasLoadedState = true;