From 723b91dfe346c9f59ddd37e5e2074699b791907f Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Tue, 7 Jun 2016 15:06:44 -0700
Subject: [PATCH] Qt: Load temporary saves (untested)

---
 src/core/core.h                    |  1 +
 src/gba/core.c                     |  6 ++++++
 src/gba/savedata.c                 |  4 ++++
 src/platform/qt/GameController.cpp | 17 +++++++++++++++++
 src/platform/qt/GameController.h   |  1 +
 src/platform/qt/Window.cpp         | 15 +++++++++++++++
 src/platform/qt/Window.h           |  1 +
 7 files changed, 45 insertions(+)

diff --git a/src/core/core.h b/src/core/core.h
index 728d70aab..eba8986c9 100644
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -67,6 +67,7 @@ struct mCore {
 	bool (*isROM)(struct VFile* vf);
 	bool (*loadROM)(struct mCore*, struct VFile* vf);
 	bool (*loadSave)(struct mCore*, struct VFile* vf);
+	bool (*loadTemporarySave)(struct mCore*, struct VFile* vf);
 	void (*unloadROM)(struct mCore*);
 
 	bool (*loadBIOS)(struct mCore*, struct VFile* vf, int biosID);
diff --git a/src/gba/core.c b/src/gba/core.c
index 5667e5a24..4d394c0ca 100644
--- a/src/gba/core.c
+++ b/src/gba/core.c
@@ -192,6 +192,11 @@ static bool _GBACoreLoadSave(struct mCore* core, struct VFile* vf) {
 	return GBALoadSave(core->board, vf);
 }
 
+static bool _GBACoreLoadTemporarySave(struct mCore* core, struct VFile* vf) {
+	GBASavedataMask(core->board, vf);
+	return true; // TODO: Return a real value
+}
+
 static bool _GBACoreLoadPatch(struct mCore* core, struct VFile* vf) {
 	if (!vf) {
 		return false;
@@ -488,6 +493,7 @@ struct mCore* GBACoreCreate(void) {
 	core->loadROM = _GBACoreLoadROM;
 	core->loadBIOS = _GBACoreLoadBIOS;
 	core->loadSave = _GBACoreLoadSave;
+	core->loadTemporarySave = _GBACoreLoadTemporarySave;
 	core->loadPatch = _GBACoreLoadPatch;
 	core->unloadROM = _GBACoreUnloadROM;
 	core->reset = _GBACoreReset;
diff --git a/src/gba/savedata.c b/src/gba/savedata.c
index 091b13fb3..f041805a5 100644
--- a/src/gba/savedata.c
+++ b/src/gba/savedata.c
@@ -84,18 +84,22 @@ void GBASavedataDeinit(struct GBASavedata* savedata) {
 }
 
 void GBASavedataMask(struct GBASavedata* savedata, struct VFile* vf) {
+	enum SavedataType type = savedata->type;
 	GBASavedataDeinit(savedata);
 	savedata->vf = vf;
 	savedata->mapMode = MAP_READ;
+	GBASavedataForceType(savedata, type, savedata->realisticTiming);
 }
 
 void GBASavedataUnmask(struct GBASavedata* savedata) {
 	if (savedata->mapMode != MAP_READ) {
 		return;
 	}
+	enum SavedataType type = savedata->type;
 	GBASavedataDeinit(savedata);
 	savedata->vf = savedata->realVf;
 	savedata->mapMode = MAP_WRITE;
+	GBASavedataForceType(savedata, type, savedata->realisticTiming);
 }
 
 bool GBASavedataClone(struct GBASavedata* savedata, struct VFile* out) {
diff --git a/src/platform/qt/GameController.cpp b/src/platform/qt/GameController.cpp
index dcc8ddadc..da7ab1730 100644
--- a/src/platform/qt/GameController.cpp
+++ b/src/platform/qt/GameController.cpp
@@ -390,6 +390,23 @@ void GameController::loadBIOS(const QString& path) {
 	}
 }
 
+void GameController::loadSave(const QString& path, bool temporary) {
+	if (!isLoaded()) {
+		return;
+	}
+	VFile* vf = VFileDevice::open(path, temporary ? O_RDONLY : O_RDWR);
+	if (!vf) {
+		LOG(QT, ERROR) << tr("Failed to open save file: %1").arg(path);
+		return;
+	}
+
+	if (temporary) {
+		m_threadContext.core->loadTemporarySave(m_threadContext.core, vf);
+	} else {
+		m_threadContext.core->loadSave(m_threadContext.core, vf);
+	}
+}
+
 void GameController::yankPak() {
 	if (!m_gameOpen) {
 		return;
diff --git a/src/platform/qt/GameController.h b/src/platform/qt/GameController.h
index 5ca2ca22c..5ce3a8a3e 100644
--- a/src/platform/qt/GameController.h
+++ b/src/platform/qt/GameController.h
@@ -103,6 +103,7 @@ signals:
 public slots:
 	void loadGame(const QString& path);
 	void loadBIOS(const QString& path);
+	void loadSave(const QString& path, bool temporary = true);
 	void yankPak();
 	void replaceGame(const QString& path);
 	void setUseBIOS(bool);
diff --git a/src/platform/qt/Window.cpp b/src/platform/qt/Window.cpp
index 3dd2bbda8..1ab90199c 100644
--- a/src/platform/qt/Window.cpp
+++ b/src/platform/qt/Window.cpp
@@ -313,6 +313,15 @@ void Window::replaceROM() {
 	}
 }
 
+void Window::selectSave(bool temporary) {
+	QStringList formats{"*.sav"};
+	QString filter = tr("Game Boy Advance save files (%1)").arg(formats.join(QChar(' ')));
+	QString filename = GBAApp::app()->getOpenFileName(this, tr("Select save"), filter);
+	if (!filename.isEmpty()) {
+		m_controller->loadSave(filename, temporary);
+	}
+}
+
 void Window::multiplayerChanged() {
 	disconnect(nullptr, this, SLOT(multiplayerChanged()));
 	int attached = 1;
@@ -812,6 +821,12 @@ void Window::setupMenu(QMenuBar* menubar) {
 	installEventFilter(m_shortcutController);
 	addControlledAction(fileMenu, fileMenu->addAction(tr("Load &ROM..."), this, SLOT(selectROM()), QKeySequence::Open),
 	                    "loadROM");
+	QAction* loadTemporarySave = new QAction(tr("Load temporary save"), fileMenu);
+	connect(loadTemporarySave, &QAction::triggered, [this]() { this->selectSave(true); });
+	m_gameActions.append(loadTemporarySave);
+	m_gbaActions.append(loadTemporarySave);
+	addControlledAction(fileMenu, loadTemporarySave, "loadTemporarySave");
+
 	addControlledAction(fileMenu, fileMenu->addAction(tr("Load &BIOS..."), this, SLOT(selectBIOS())), "loadBIOS");
 	addControlledAction(fileMenu, fileMenu->addAction(tr("Load &patch..."), this, SLOT(selectPatch())), "loadPatch");
 	addControlledAction(fileMenu, fileMenu->addAction(tr("Boot BIOS"), m_controller, SLOT(bootBIOS())), "bootBIOS");
diff --git a/src/platform/qt/Window.h b/src/platform/qt/Window.h
index 96674f096..954ab777d 100644
--- a/src/platform/qt/Window.h
+++ b/src/platform/qt/Window.h
@@ -59,6 +59,7 @@ signals:
 
 public slots:
 	void selectROM();
+	void selectSave(bool temporary);
 	void selectBIOS();
 	void selectPatch();
 	void enterFullScreen();