Qt: Port autosave to Qt interface

CHANGES

@@ -13,6 +13,7 @@ Features:
  - AGBPrint support
  - Debugger: Conditional breakpoints and watchpoints
  - Ability to select GB/GBC/SGB BIOS on console ports
+ - Optional automatic state saving/loading
 Bugfixes:
  - GB Audio: Make audio unsigned with bias (fixes mgba.io/i/749)
  - GB Serialize: Fix audio state loading

src/platform/qt/CoreController.cpp

@@ -28,8 +28,9 @@
 #include <mgba-util/math.h>
 #include <mgba-util/vfs.h>
 
-using namespace QGBA;
+#define AUTOSAVE_GRANULARITY 600
 
+using namespace QGBA;
 
 CoreController::CoreController(mCore* core, QObject* parent)
 	: QObject(parent)
@@ -48,6 +49,12 @@ CoreController::CoreController(mCore* core, QObject* parent)
 
 	m_threadContext.core->setVideoBuffer(m_threadContext.core, reinterpret_cast<color_t*>(m_activeBuffer->data()), size.width());
 
+	m_resetActions.append([this]() {
+		if (m_autoload) {
+			mCoreLoadState(m_threadContext.core, 0, m_loadStateFlags);
+		}
+	});
+
 	m_threadContext.startCallback = [](mCoreThread* context) {
 		CoreController* controller = static_cast<CoreController*>(context->userData);
 
@@ -61,6 +68,8 @@ CoreController::CoreController(mCore* core, QObject* parent)
 			break;
 		}
 
+		controller->updateFastForward();
+
 		if (controller->m_multiplayer) {
 			controller->m_multiplayer->attachGame(controller);
 		}
@@ -79,10 +88,6 @@ CoreController::CoreController(mCore* core, QObject* parent)
 			controller->m_override->apply(context->core);
 		}
 
-		if (mCoreLoadState(context->core, 0, controller->m_loadStateFlags)) {
-			mCoreDeleteState(context->core, 0);
-		}
-
 		controller->m_resetActions.clear();
 
 		QSize size = controller->screenDimensions();
@@ -100,12 +105,24 @@ CoreController::CoreController(mCore* core, QObject* parent)
 	m_threadContext.frameCallback = [](mCoreThread* context) {
 		CoreController* controller = static_cast<CoreController*>(context->userData);
 
+		if (controller->m_autosaveCounter == AUTOSAVE_GRANULARITY) {
+			if (controller->m_autosave) {
+				mCoreSaveState(context->core, 0, controller->m_saveStateFlags);
+			}
+			controller->m_autosaveCounter = 0;
+		}
+		++controller->m_autosaveCounter;
+
 		controller->finishFrame();
 	};
 
 	m_threadContext.cleanCallback = [](mCoreThread* context) {
 		CoreController* controller = static_cast<CoreController*>(context->userData);
 
+		if (controller->m_autosave) {
+			mCoreSaveState(context->core, 0, controller->m_saveStateFlags);
+		}
+
 		controller->clearMultiplayerController();
 		QMetaObject::invokeMethod(controller, "stopping");
 	};
@@ -126,7 +143,8 @@ CoreController::CoreController(mCore* core, QObject* parent)
 		mThreadLogger* logContext = reinterpret_cast<mThreadLogger*>(logger);
 		mCoreThread* context = logContext->p;
 
-		static const char* savestateMessage = "State %i loaded";
+		static const char* savestateMessage = "State %i saved";
+		static const char* loadstateMessage = "State %i loaded";
 		static const char* savestateFailedMessage = "State %i failed to load";
 		static int biosCat = -1;
 		static int statusCat = -1;
@@ -152,7 +170,7 @@ CoreController::CoreController(mCore* core, QObject* parent)
 #endif
 		if (category == statusCat) {
 			// Slot 0 is reserved for suspend points
-			if (strncmp(savestateMessage, format, strlen(savestateMessage)) == 0) {
+			if (strncmp(loadstateMessage, format, strlen(loadstateMessage)) == 0) {
 				va_list argc;
 				va_copy(argc, args);
 				int slot = va_arg(argc, int);
@@ -160,7 +178,7 @@ CoreController::CoreController(mCore* core, QObject* parent)
 				if (slot == 0) {
 					format = "Loaded suspend state";
 				}
-			} else if (strncmp(savestateFailedMessage, format, strlen(savestateFailedMessage)) == 0) {
+			} else if (strncmp(savestateFailedMessage, format, strlen(savestateFailedMessage)) == 0 || strncmp(savestateMessage, format, strlen(savestateMessage)) == 0) {
 				va_list argc;
 				va_copy(argc, args);
 				int slot = va_arg(argc, int);
@@ -232,11 +250,15 @@ void CoreController::loadConfig(ConfigController* config) {
 	m_videoSync = config->getOption("videoSync", m_videoSync).toInt();
 	m_audioSync = config->getOption("audioSync", m_audioSync).toInt();
 	m_fpsTarget = config->getOption("fpsTarget").toFloat();
+	m_autosave = config->getOption("autosave", false).toInt();
+	m_autoload = config->getOption("autoload", true).toInt();
 	m_autofireThreshold = config->getOption("autofireThreshold", m_autofireThreshold).toInt();
-	updateFastForward();
 	mCoreLoadForeignConfig(m_threadContext.core, config->config());
+	if (hasStarted()) {
+		updateFastForward();
 		mCoreThreadRewindParamsChanged(&m_threadContext);
 	}
+}
 
 #ifdef USE_DEBUGGERS
 void CoreController::setDebugger(mDebugger* debugger) {

src/platform/qt/CoreController.h

@@ -195,6 +195,10 @@ private:
 	bool m_audioSync = AUDIO_SYNC;
 	bool m_videoSync = VIDEO_SYNC;
 
+	bool m_autosave;
+	bool m_autoload;
+	int m_autosaveCounter;
+
 	int m_fastForward = false;
 	int m_fastForwardForced = false;
 	float m_fastForwardRatio = -1.f;

src/platform/qt/SettingsView.cpp

@@ -357,6 +357,8 @@ void SettingsView::updateConfig() {
 	saveSetting("showFps", m_ui.showFps);
 	saveSetting("cheatAutoload", m_ui.cheatAutoload);
 	saveSetting("cheatAutosave", m_ui.cheatAutosave);
+	saveSetting("autoload", m_ui.autoload);
+	saveSetting("autosave", m_ui.autosave);
 
 	if (m_ui.fastForwardUnbounded->isChecked()) {
 		saveSetting("fastForwardRatio", "-1");
@@ -478,6 +480,8 @@ void SettingsView::reloadConfig() {
 	loadSetting("showFps", m_ui.showFps, true);
 	loadSetting("cheatAutoload", m_ui.cheatAutoload, true);
 	loadSetting("cheatAutosave", m_ui.cheatAutosave, true);
+	loadSetting("autoload", m_ui.autoload, true);
+	loadSetting("autosave", m_ui.autosave, false);
 
 	m_ui.libraryStyle->setCurrentIndex(loadSetting("libraryStyle").toInt());
 

src/platform/qt/SettingsView.ui

@@ -512,7 +512,14 @@
          </property>
         </widget>
        </item>
-       <item row="11" column="1">
+       <item row="13" column="0" colspan="2">
+        <widget class="Line" name="line_16">
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+        </widget>
+       </item>
+       <item row="14" column="1">
         <widget class="QCheckBox" name="cheatAutosave">
          <property name="text">
           <string>Automatically save cheats</string>
@@ -522,7 +529,7 @@
          </property>
         </widget>
        </item>
-       <item row="12" column="1">
+       <item row="15" column="1">
         <widget class="QCheckBox" name="cheatAutoload">
          <property name="text">
           <string>Automatically load cheats</string>
@@ -532,6 +539,26 @@
          </property>
         </widget>
        </item>
+       <item row="11" column="1">
+        <widget class="QCheckBox" name="autosave">
+         <property name="text">
+          <string>Automatically save state</string>
+         </property>
+         <property name="checked">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="12" column="1">
+        <widget class="QCheckBox" name="autoload">
+         <property name="text">
+          <string>Automatically load state</string>
+         </property>
+         <property name="checked">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
       </layout>
      </widget>
      <widget class="QWidget" name="emulation">

src/platform/qt/Window.cpp

@@ -1858,8 +1858,8 @@ void Window::setController(CoreController* controller, const QString& fname) {
 		m_pendingPatch = QString();
 	}
 
-	m_controller->start();
 	m_controller->loadConfig(m_config);
+	m_controller->start();
 }
 
 WindowBackground::WindowBackground(QWidget* parent)