Merge branch 'feature/input-revamp' into medusa

2017-07-24 07:55:12 -07:00 · 2017-07-24 07:55:12 -07:00 · 394a2e0bb8
parent 76b8916dfe 5122c399f5
commit 394a2e0bb8
78 changed files with 2200 additions and 695 deletions
--- a/.travis-deps.sh
+++ b/.travis-deps.sh
@ -3,15 +3,22 @@ if [ $TRAVIS_OS_NAME = "osx" ]; then
 	brew update
 	brew install qt5 ffmpeg imagemagick sdl2 libzip libpng
 	if [ "$CC" == "gcc" ]; then
-		brew install gcc@4.9
-		export CC=gcc-4.9
-		export CXX=g++-4.9
+		brew install gcc@5
+		export CC=gcc-5
+		export CXX=g++-5
 	fi
 else
 	sudo apt-get clean
+	sudo add-apt-repository -y ppa:george-edison55/cmake-3.x
+	sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
 	sudo apt-get update
 	sudo apt-get install -y -q cmake libedit-dev libmagickwand-dev \
 		libpng-dev libsdl2-dev libzip-dev qtbase5-dev \
 		libqt5opengl5-dev qtmultimedia5-dev libavcodec-dev \
 		libavutil-dev libavformat-dev libavresample-dev libswscale-dev
+	if [ "$CC" == "gcc" ]; then
+		sudo apt-get install -y -q gcc-5 g++-5
+		export CC=gcc-5
+		export CXX=g++-5
+	fi
 fi
--- a/.travis.yml
+++ b/.travis.yml
@ -2,9 +2,6 @@ language: c
 sudo: required
 matrix:
  include:
-    - os: linux
-      dist: trusty
-      compiler: clang
    - os: linux
      dist: trusty
      compiler: gcc
@ -16,4 +13,4 @@ matrix:
 before_install:
  - source ./.travis-deps.sh

-script: mkdir build && cd build && cmake -DCMAKE_PREFIX_PATH=/usr/local/opt/qt5 .. && make
+script: mkdir build && cd build && cmake -DCMAKE_PREFIX_PATH=/usr/local/opt/qt5 .. && make -j2
--- a/7
+++ b/7
@ -23,10 +23,17 @@ Features:
 Bugfixes:
 - GB Audio: Make audio unsigned with bias (fixes mgba.io/i/749)
 - Python: Fix importing .gb or .gba before .core
+<<<<<<< HEAD
+=======
+ - GBA: Reset active region as needed when loading a ROM
+ - Qt: Fix command line debugger closing second game
+>>>>>>> feature/input-revamp
 Misc:
 - GBA Timer: Use global cycles for timers
 - GBA: Extend oddly-sized ROMs to full address space (fixes mgba.io/i/722)
 - All: Make FIXED_ROM_BUFFER an option instead of 3DS-only
+ - Qt: Don't rebuild library view if style hasn't changed
+ - Qt: Redo GameController into multiple classes

 0.6.0: (2017-07-16)
 Features:
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.11)
+cmake_minimum_required(VERSION 3.1)
 project(medusa)
 set(BINARY_NAME medusa-emu CACHE INTERNAL "Name of output binaries")
 if(NOT MSVC)
@ -262,7 +262,7 @@ if(DEFINED 3DS OR DEFINED PSP2 OR DEFINED WII)
 	set(USE_SQLITE3 OFF)
 endif()

-if(DEFINED 3DS OR DEFINED WII)
+if(DEFINED 3DS)
 	add_definitions(-DFIXED_ROM_BUFFER)
 endif()

@ -625,7 +625,7 @@ endif()
 if(USE_ELF)
 	list(APPEND FEATURES ELF)
 	include_directories(AFTER ${LIBELF_INCLUDE_DIRS})
-	find_file(ELF_REPL_H elf_repl.h PATHS ${LIBELF_INCLUDE_DIRS})
+	find_file(ELF_REPL_H elf_repl.h PATHS ${LIBELF_INCLUDE_DIRS} NO_CMAKE_FIND_ROOT_PATH)
 	if (ELF_REPL_H)
 		add_definitions(-DUSE_ELF_REPL)
 	endif()
--- a/include/mgba/core/thread.h
+++ b/include/mgba/core/thread.h
@ -103,6 +103,7 @@ void mCoreThreadWaitFromThread(struct mCoreThread* threadContext);
 void mCoreThreadStopWaiting(struct mCoreThread* threadContext);

 void mCoreThreadSetRewinding(struct mCoreThread* threadContext, bool);
+void mCoreThreadRewindParamsChanged(struct mCoreThread* threadContext);

 struct mCoreThread* mCoreThreadGet(void);
 struct mLogger* mCoreThreadLogger(void);
--- a/src/core/rewind.c
+++ b/src/core/rewind.c
@ -19,6 +19,9 @@ THREAD_ENTRY _rewindThread(void* context);
 #endif

 void mCoreRewindContextInit(struct mCoreRewindContext* context, size_t entries, bool onThread) {
+	if (context->currentState) {
+		return;
+	}
 	mCoreRewindPatchesInit(&context->patchMemory, entries);
 	size_t e;
 	for (e = 0; e < entries; ++e) {
@ -42,6 +45,9 @@ void mCoreRewindContextInit(struct mCoreRewindContext* context, size_t entries,
 }

 void mCoreRewindContextDeinit(struct mCoreRewindContext* context) {
+	if (!context->currentState) {
+		return;
+	}
 #ifndef DISABLE_THREADING
 	if (context->onThread) {
 		MutexLock(&context->mutex);
@ -55,6 +61,8 @@ void mCoreRewindContextDeinit(struct mCoreRewindContext* context) {
 #endif
 	context->previousState->close(context->previousState);
 	context->currentState->close(context->currentState);
+	context->previousState = NULL;
+	context->currentState = NULL;
 	size_t s;
 	for (s = 0; s < mCoreRewindPatchesSize(&context->patchMemory); ++s) {
 		deinitPatchFast(mCoreRewindPatchesGetPointer(&context->patchMemory, s));
--- a/src/core/thread.c
+++ b/src/core/thread.c
@ -167,10 +167,7 @@ static THREAD_ENTRY _mCoreThreadRun(void* context) {
 		mLogFilterLoad(threadContext->logger.d.filter, &core->config);
 	}

-	if (core->opts.rewindEnable && core->opts.rewindBufferCapacity > 0) {
-		 mCoreRewindContextInit(&threadContext->impl->rewind, core->opts.rewindBufferCapacity, true);
-		 threadContext->impl->rewind.stateFlags = core->opts.rewindSave ? SAVESTATE_SAVEDATA : 0;
-	}
+	mCoreThreadRewindParamsChanged(threadContext);

 	_changeState(threadContext->impl, THREAD_RUNNING, true);

@ -252,7 +249,7 @@ static THREAD_ENTRY _mCoreThreadRun(void* context) {
 }

 bool mCoreThreadStart(struct mCoreThread* threadContext) {
-	threadContext->impl = malloc(sizeof(*threadContext->impl));
+	threadContext->impl = calloc(sizeof(*threadContext->impl), 1);
 	threadContext->impl->state = THREAD_INITIALIZED;
 	threadContext->logger.p = threadContext;
 	if (!threadContext->logger.d.log) {
@ -547,6 +544,16 @@ void mCoreThreadSetRewinding(struct mCoreThread* threadContext, bool rewinding)
 	MutexUnlock(&threadContext->impl->stateMutex);
 }

+void mCoreThreadRewindParamsChanged(struct mCoreThread* threadContext) {
+	struct mCore* core = threadContext->core;
+	if (core->opts.rewindEnable && core->opts.rewindBufferCapacity > 0) {
+		 mCoreRewindContextInit(&threadContext->impl->rewind, core->opts.rewindBufferCapacity, true);
+		 threadContext->impl->rewind.stateFlags = core->opts.rewindSave ? SAVESTATE_SAVEDATA : 0;
+	} else {
+		 mCoreRewindContextDeinit(&threadContext->impl->rewind);
+	}
+}
+
 void mCoreThreadWaitFromThread(struct mCoreThread* threadContext) {
 	MutexLock(&threadContext->impl->stateMutex);
 	if (threadContext->impl->interruptDepth && threadContext->impl->savedState == THREAD_RUNNING) {
--- a/src/gba/gba.c
+++ b/src/gba/gba.c
@ -208,7 +208,7 @@ void GBAReset(struct ARMCore* cpu) {
 	gba->debug = false;
 	memset(gba->debugString, 0, sizeof(gba->debugString));

-	if (!gba->romVf) {
+	if (!gba->romVf && gba->memory.rom) {
 		GBASkipBIOS(gba);
 	}
 }
@ -312,6 +312,10 @@ bool GBALoadNull(struct GBA* gba) {
 	gba->memory.romMask = SIZE_CART0 - 1;
 	gba->memory.mirroring = false;
 	gba->romCrc32 = 0;
+
+	if (gba->cpu) {
+		gba->cpu->memory.setActiveRegion(gba->cpu, gba->cpu->gprs[ARM_PC]);
+	}
 	return true;
 }

@ -335,6 +339,9 @@ bool GBALoadMB(struct GBA* gba, struct VFile* vf) {
 	gba->memory.romSize = 0;
 	gba->memory.romMask = 0;
 	gba->romCrc32 = doCrc32(gba->memory.wram, gba->pristineRomSize);
+	if (gba->cpu && gba->memory.activeRegion == REGION_WORKING_RAM) {
+		gba->cpu->memory.setActiveRegion(gba->cpu, gba->cpu->gprs[ARM_PC]);
+	}
 	return true;
 }

@ -379,6 +386,9 @@ bool GBALoadROM(struct GBA* gba, struct VFile* vf) {
 		gba->memory.romSize = SIZE_CART0;
 		gba->isPristine = false;
 	}
+	if (gba->cpu && gba->memory.activeRegion >= REGION_CART0) {
+		gba->cpu->memory.setActiveRegion(gba->cpu, gba->cpu->gprs[ARM_PC]);
+	}
 	// TODO: error check
 	return true;
 }
--- a/src/platform/python/CMakeLists.txt
+++ b/src/platform/python/CMakeLists.txt
@ -30,7 +30,6 @@ set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/lib.c PROPERTIES GENERAT

 file(GLOB PYTHON_SRC ${CMAKE_CURRENT_SOURCE_DIR}/*.c)
 add_library(${BINARY_NAME}-pylib STATIC ${CMAKE_CURRENT_BINARY_DIR}/lib.c ${PYTHON_SRC})
-add_dependencies(${BINARY_NAME}-pylib ${CMAKE_CURRENT_SOURCE_DIR}/_builder.py)
 set_target_properties(${BINARY_NAME}-pylib PROPERTIES INCLUDE_DIRECTORIES "${CMAKE_BINARY_DIR};${INCLUDE_DIRECTORIES}")
 set_target_properties(${BINARY_NAME}-pylib PROPERTIES COMPILE_DEFINITIONS "${OS_DEFINES};${FEATURE_DEFINES};${FUNCTION_DEFINES}")
 set(PYTHON_LIBRARY ${BINARY_NAME}-pylib PARENT_SCOPE)
--- a/src/platform/qt/AssetTile.cpp
+++ b/src/platform/qt/AssetTile.cpp
@ -5,6 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "AssetTile.h"

+#include "CoreController.h"
 #include "GBAApp.h"

 #include <QFontDatabase>
@ -39,7 +40,7 @@ AssetTile::AssetTile(QWidget* parent)
 	m_ui.b->setFont(font);
 }

-void AssetTile::setController(GameController* controller) {
+void AssetTile::setController(std::shared_ptr<CoreController> controller) {
 	m_tileCache = controller->tileCache();
 	switch (controller->platform()) {
 #ifdef M_CORE_GBA
@ -83,7 +84,7 @@ void AssetTile::selectIndex(int index) {
 	m_index = index;
 	const uint16_t* data;

-	mTileCacheSetPalette(m_tileCache.get(), m_paletteSet);
+	mTileCacheSetPalette(m_tileCache, m_paletteSet);
 	unsigned bpp = 8 << m_tileCache->bpp;
 	int dispIndex = index;
 	int paletteId = m_paletteId;
@ -98,7 +99,7 @@ void AssetTile::selectIndex(int index) {
 #endif
 		dispIndex -= m_boundary;
 	}
-	data = mTileCacheGetTile(m_tileCache.get(), index, paletteId);
+	data = mTileCacheGetTile(m_tileCache, index, paletteId);
 	m_ui.tileId->setText(QString::number(dispIndex * (1 + m_paletteSet)));
 	m_ui.address->setText(tr("%0%1%2")
 		.arg(m_addressWidth == 4 ? index >= m_boundary : 0)
@ -112,7 +113,7 @@ void AssetTile::selectIndex(int index) {

 void AssetTile::selectColor(int index) {
 	const uint16_t* data;
-	mTileCacheSetPalette(m_tileCache.get(), m_paletteSet);
+	mTileCacheSetPalette(m_tileCache, m_paletteSet);
 	unsigned bpp = 8 << m_tileCache->bpp;
 	int paletteId = m_paletteId;
 	// XXX: Do this better
@ -121,7 +122,7 @@ void AssetTile::selectColor(int index) {
 		paletteId += m_tileCache->count / 2;
 	}
 #endif
-	data = mTileCacheGetTile(m_tileCache.get(), m_index, m_paletteId);
+	data = mTileCacheGetTile(m_tileCache, m_index, m_paletteId);
 	uint16_t color = data[index];
 	m_ui.color->setColor(0, color);
 	m_ui.color->update();
--- a/src/platform/qt/AssetTile.h
+++ b/src/platform/qt/AssetTile.h
@ -6,20 +6,22 @@
 #ifndef QGBA_ASSET_TILE
 #define QGBA_ASSET_TILE

-#include "GameController.h"
-
 #include "ui_AssetTile.h"

+#include <memory>
+
 #include <mgba/core/tile-cache.h>

 namespace QGBA {

+class CoreController;
+
 class AssetTile : public QGroupBox {
 Q_OBJECT

 public:
 	AssetTile(QWidget* parent = nullptr);
-	void setController(GameController*);
+	void setController(std::shared_ptr<CoreController>);

 public slots:
 	void setPalette(int);
@ -30,7 +32,7 @@ public slots:
 private:
 	Ui::AssetTile m_ui;

-	std::shared_ptr<mTileCache> m_tileCache;
+	mTileCache* m_tileCache;
 	int m_paletteId = 0;
 	int m_paletteSet = 0;
 	int m_index = 0;
--- a/src/platform/qt/AssetView.cpp
+++ b/src/platform/qt/AssetView.cpp
@ -5,32 +5,32 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "AssetView.h"

-#include <QTimer>
+#include "CoreController.h"

-#include <mgba/core/tile-cache.h>
+#include <QTimer>

 using namespace QGBA;

-AssetView::AssetView(GameController* controller, QWidget* parent)
+AssetView::AssetView(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: QWidget(parent)
 	, m_tileCache(controller->tileCache())
 	, m_controller(controller)
 {
 	m_updateTimer.setSingleShot(true);
 	m_updateTimer.setInterval(1);
-	connect(&m_updateTimer, SIGNAL(timeout()), this, SLOT(updateTiles()));
+	connect(&m_updateTimer, &QTimer::timeout, this, static_cast<void(AssetView::*)()>(&AssetView::updateTiles));

-	connect(m_controller, &GameController::frameAvailable, &m_updateTimer,
+	connect(controller.get(), &CoreController::frameAvailable, &m_updateTimer,
 	        static_cast<void(QTimer::*)()>(&QTimer::start));
-	connect(m_controller, &GameController::gameStopped, this, &AssetView::close);
-	connect(m_controller, &GameController::gameStopped, &m_updateTimer, &QTimer::stop);
+	connect(controller.get(), &CoreController::stopping, this, &AssetView::close);
+	connect(controller.get(), &CoreController::stopping, &m_updateTimer, &QTimer::stop);
+}
+
+void AssetView::updateTiles() {
+	updateTiles(false);
 }

 void AssetView::updateTiles(bool force) {
-	if (!m_controller->isLoaded()) {
-		return;
-	}
-
 	switch (m_controller->platform()) {
 #ifdef M_CORE_GBA
 	case PLATFORM_GBA:
@ -56,7 +56,7 @@ void AssetView::showEvent(QShowEvent*) {
 }

 void AssetView::compositeTile(unsigned tileId, void* buffer, size_t stride, size_t x, size_t y, int depth) {
-	const uint8_t* tile = mTileCacheGetRawTile(m_tileCache.get(), tileId);
+	const uint8_t* tile = mTileCacheGetRawTile(m_tileCache, tileId);
 	uint8_t* pixels = static_cast<uint8_t*>(buffer);
 	size_t base = stride * y + x;
 	switch (depth) {
--- a/src/platform/qt/AssetView.h
+++ b/src/platform/qt/AssetView.h
@ -6,22 +6,28 @@
 #ifndef QGBA_ASSET_VIEW
 #define QGBA_ASSET_VIEW

+#include <QTimer>
 #include <QWidget>

-#include "GameController.h"
+#include <mgba/core/tile-cache.h>
+
+#include <memory>

 namespace QGBA {

+class CoreController;
+
 class AssetView : public QWidget {
 Q_OBJECT

 public:
-	AssetView(GameController* controller, QWidget* parent = nullptr);
+	AssetView(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);

 	void compositeTile(unsigned tileId, void* image, size_t stride, size_t x, size_t y, int depth = 8);

 protected slots:
-	void updateTiles(bool force = false);
+	void updateTiles();
+	void updateTiles(bool force);

 protected:
 #ifdef M_CORE_GBA
@ -34,10 +40,10 @@ protected:
 	void resizeEvent(QResizeEvent*) override;
 	void showEvent(QShowEvent*) override;

-	const std::shared_ptr<mTileCache> m_tileCache;
+	mTileCache* const m_tileCache;

 private:
-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
 	QTimer m_updateTimer;
 };

--- a/src/platform/qt/AudioProcessor.cpp
+++ b/src/platform/qt/AudioProcessor.cpp
@ -47,10 +47,18 @@ AudioProcessor::AudioProcessor(QObject* parent)
 {
 }

-void AudioProcessor::setInput(mCoreThread* input) {
+AudioProcessor::~AudioProcessor() {
+	stop();
+}
+
+void AudioProcessor::setInput(std::shared_ptr<CoreController> input) {
 	m_context = input;
 }

+void AudioProcessor::stop() {
+	m_context.reset();
+}
+
 void AudioProcessor::setBufferSamples(int samples) {
 	m_samples = samples;
 }
--- a/src/platform/qt/AudioProcessor.h
+++ b/src/platform/qt/AudioProcessor.h
@ -7,6 +7,10 @@
 #define QGBA_AUDIO_PROCESSOR
 #include <QObject>

+#include <memory>
+
+#include "CoreController.h"
+
 struct mCoreThread;

 namespace QGBA {
@ -28,12 +32,14 @@ public:
 	static void setDriver(Driver driver) { s_driver = driver; }

 	AudioProcessor(QObject* parent = nullptr);
+	~AudioProcessor();

 	int getBufferSamples() const { return m_samples; }
 	virtual unsigned sampleRate() const = 0;

 public slots:
-	virtual void setInput(mCoreThread* input);
+	virtual void setInput(std::shared_ptr<CoreController>);
+	virtual void stop();

 	virtual bool start() = 0;
 	virtual void pause() = 0;
@ -44,10 +50,10 @@ public slots:
 	virtual void requestSampleRate(unsigned) = 0;

 protected:
-	mCoreThread* input() { return m_context; }
+	mCoreThread* input() { return m_context->thread(); }

 private:
-	mCoreThread* m_context = nullptr;
+	std::shared_ptr<CoreController> m_context;
 	int m_samples = 2048;
 	static Driver s_driver;
 };
--- a/src/platform/qt/AudioProcessorQt.cpp
+++ b/src/platform/qt/AudioProcessorQt.cpp
@ -20,16 +20,24 @@ AudioProcessorQt::AudioProcessorQt(QObject* parent)
 {
 }

-void AudioProcessorQt::setInput(mCoreThread* input) {
-	AudioProcessor::setInput(input);
+void AudioProcessorQt::setInput(std::shared_ptr<CoreController> controller) {
+	AudioProcessor::setInput(controller);
 	if (m_device) {
-		m_device->setInput(input);
+		m_device->setInput(input());
 		if (m_audioOutput) {
 			m_device->setFormat(m_audioOutput->format());
 		}
 	}
 }

+void AudioProcessorQt::stop() {
+	if (m_device) {
+		m_device.reset();
+	}
+	pause();
+	AudioProcessor::stop();
+}
+
 bool AudioProcessorQt::start() {
 	if (!input()) {
 		LOG(QT, WARN) << tr("Can't start an audio processor without input");
@ -37,7 +45,7 @@ bool AudioProcessorQt::start() {
 	}

 	if (!m_device) {
-		m_device = new AudioDevice(this);
+		m_device = std::make_unique<AudioDevice>(this);
 	}

 	if (!m_audioOutput) {
@ -56,7 +64,7 @@ bool AudioProcessorQt::start() {
 	m_device->setInput(input());
 	m_device->setFormat(m_audioOutput->format());

-	m_audioOutput->start(m_device);
+	m_audioOutput->start(m_device.get());
 	return m_audioOutput->state() == QAudio::ActiveState;
 }

--- a/src/platform/qt/AudioProcessorQt.h
+++ b/src/platform/qt/AudioProcessorQt.h
@ -22,7 +22,8 @@ public:
 	virtual unsigned sampleRate() const override;

 public slots:
-	virtual void setInput(mCoreThread* input) override;
+	virtual void setInput(std::shared_ptr<CoreController> input) override;
+	virtual void stop() override;
 	virtual bool start() override;
 	virtual void pause() override;

@ -33,7 +34,7 @@ public slots:

 private:
 	QAudioOutput* m_audioOutput = nullptr;
-	AudioDevice* m_device = nullptr;
+	std::unique_ptr<AudioDevice> m_device;
 	unsigned m_sampleRate = 44100;
 };

--- a/src/platform/qt/AudioProcessorSDL.cpp
+++ b/src/platform/qt/AudioProcessorSDL.cpp
@ -16,16 +16,17 @@ AudioProcessorSDL::AudioProcessorSDL(QObject* parent)
 {
 }

-AudioProcessorSDL::~AudioProcessorSDL() {
-	mSDLDeinitAudio(&m_audio);
+void AudioProcessorSDL::setInput(std::shared_ptr<CoreController> controller) {
+	AudioProcessor::setInput(controller);
+	if (m_audio.core && input()->core != m_audio.core) {
+		mSDLDeinitAudio(&m_audio);
+		mSDLInitAudio(&m_audio, input());
+	}
 }

-void AudioProcessorSDL::setInput(mCoreThread* input) {
-	AudioProcessor::setInput(input);
-	if (m_audio.core && input->core != m_audio.core) {
-		mSDLDeinitAudio(&m_audio);
-		mSDLInitAudio(&m_audio, input);
-	}
+void AudioProcessorSDL::stop() {
+	mSDLDeinitAudio(&m_audio);
+	AudioProcessor::stop();
 }

 bool AudioProcessorSDL::start() {
@ -51,10 +52,12 @@ void AudioProcessorSDL::pause() {

 void AudioProcessorSDL::setBufferSamples(int samples) {
 	AudioProcessor::setBufferSamples(samples);
-	m_audio.samples = samples;
-	if (m_audio.core) {
-		mSDLDeinitAudio(&m_audio);
-		mSDLInitAudio(&m_audio, input());
+	if (m_audio.samples != samples) {
+		m_audio.samples = samples;
+		if (m_audio.core) {
+			mSDLDeinitAudio(&m_audio);
+			mSDLInitAudio(&m_audio, input());
+		}
 	}
 }

@ -62,10 +65,12 @@ void AudioProcessorSDL::inputParametersChanged() {
 }

 void AudioProcessorSDL::requestSampleRate(unsigned rate) {
-	m_audio.sampleRate = rate;
-	if (m_audio.core) {
-		mSDLDeinitAudio(&m_audio);
-		mSDLInitAudio(&m_audio, input());
+	if (m_audio.sampleRate != rate) {
+		m_audio.sampleRate = rate;
+		if (m_audio.core) {
+			mSDLDeinitAudio(&m_audio);
+			mSDLInitAudio(&m_audio, input());
+		}
 	}
 }

--- a/src/platform/qt/AudioProcessorSDL.h
+++ b/src/platform/qt/AudioProcessorSDL.h
@ -18,12 +18,12 @@ Q_OBJECT

 public:
 	AudioProcessorSDL(QObject* parent = nullptr);
-	~AudioProcessorSDL();

 	virtual unsigned sampleRate() const override;

 public slots:
-	virtual void setInput(mCoreThread* input) override;
+	virtual void setInput(std::shared_ptr<CoreController> input) override;
+	virtual void stop() override;
 	virtual bool start() override;
 	virtual void pause() override;

--- a/src/platform/qt/CMakeLists.txt
+++ b/src/platform/qt/CMakeLists.txt
@ -1,6 +1,6 @@
-if(NOT MSVC)
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
-endif()
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)

 if(APPLE)
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.7")
@ -67,12 +67,13 @@ set(SOURCE_FILES
 	CheatsModel.cpp
 	CheatsView.cpp
 	ConfigController.cpp
+	CoreManager.cpp
+	CoreController.cpp
 	Display.cpp
 	DisplayGL.cpp
 	DisplayQt.cpp
 	GBAApp.cpp
 	GIFView.cpp
-	GameController.cpp
 	GamepadAxisEvent.cpp
 	GamepadButtonEvent.cpp
 	GamepadHatEvent.cpp
@ -282,7 +283,7 @@ if(APPLE)
 	if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
 		get_target_property(QTCOCOA Qt5::QCocoaIntegrationPlugin LOCATION)
 		get_target_property(COREAUDIO Qt5::CoreAudioPlugin LOCATION)
-		get_target_property(BUNDLE_PATH ${BINARY_NAME}-qt LOCATION)
+		set(BUNDLE_PATH ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.app)
 		target_sources(${BINARY_NAME}-qt PRIVATE "${PLUGINS}")
 		set_source_files_properties("${QTCOCOA}" PROPERTIES MACOSX_PACKAGE_LOCATION Contents/PlugIns)
 		set_source_files_properties("${COREAUDIO}" PROPERTIES MACOSX_PACKAGE_LOCATION Contents/PlugIns)
--- a/src/platform/qt/CheatsView.cpp
+++ b/src/platform/qt/CheatsView.cpp
@ -6,7 +6,7 @@
 #include "CheatsView.h"

 #include "GBAApp.h"
-#include "GameController.h"
+#include "CoreController.h"

 #include <QClipboard>
 #include <QPushButton>
@ -21,7 +21,7 @@

 using namespace QGBA;

-CheatsView::CheatsView(GameController* controller, QWidget* parent)
+CheatsView::CheatsView(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: QWidget(parent)
 	, m_controller(controller)
 	, m_model(controller->cheatDevice())
@ -35,8 +35,8 @@ CheatsView::CheatsView(GameController* controller, QWidget* parent)
 	connect(m_ui.save, &QPushButton::clicked, this, &CheatsView::save);
 	connect(m_ui.addSet, &QPushButton::clicked, this, &CheatsView::addSet);
 	connect(m_ui.remove, &QPushButton::clicked, this, &CheatsView::removeSet);
-	connect(controller, &GameController::gameStopped, this, &CheatsView::close);
-	connect(controller, &GameController::stateLoaded, &m_model, &CheatsModel::invalidated);
+	connect(controller.get(), &CoreController::stopping, this, &CheatsView::close);
+	connect(controller.get(), &CoreController::stateLoaded, &m_model, &CheatsModel::invalidated);

 	QPushButton* add;
 	switch (controller->platform()) {
@ -123,7 +123,7 @@ void CheatsView::save() {
 }

 void CheatsView::addSet() {
-	GameController::Interrupter interrupter(m_controller);
+	CoreController::Interrupter interrupter(m_controller);
 	mCheatSet* set = m_controller->cheatDevice()->createSet(m_controller->cheatDevice(), nullptr);
 	m_model.addSet(set);
 }
@ -134,7 +134,7 @@ void CheatsView::removeSet() {
 	if (selection.count() < 1) {
 		return;
 	}
-	GameController::Interrupter interrupter(m_controller);
+	CoreController::Interrupter interrupter(m_controller);
 	for (const QModelIndex& index : selection) {
 		m_model.removeAt(selection[0]);
 	}
@ -154,7 +154,7 @@ void CheatsView::enterCheat(int codeType) {
 	if (!set) {
 		return;
 	}
-	m_controller->threadInterrupt();
+	CoreController::Interrupter interrupter(m_controller);
 	if (selection.count() == 0) {
 		m_model.addSet(set);
 		index = m_model.index(m_model.rowCount() - 1, 0, QModelIndex());
@ -167,6 +167,5 @@ void CheatsView::enterCheat(int codeType) {
 		m_model.endAppendRow();
 	}
 	set->refresh(set, m_controller->cheatDevice());
-	m_controller->threadContinue();
 	m_ui.codeEntry->clear();
 }
--- a/src/platform/qt/CheatsView.h
+++ b/src/platform/qt/CheatsView.h
@ -9,6 +9,7 @@
 #include <QWidget>

 #include <functional>
+#include <memory>

 #include "CheatsModel.h"

@ -18,13 +19,13 @@ struct mCheatDevice;

 namespace QGBA {

-class GameController;
+class CoreController;

 class CheatsView : public QWidget {
 Q_OBJECT

 public:
-	CheatsView(GameController* controller, QWidget* parent = nullptr);
+	CheatsView(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);

 	virtual bool eventFilter(QObject*, QEvent*) override;

@ -38,7 +39,7 @@ private:
 	void enterCheat(int codeType);

 	Ui::CheatsView m_ui;
-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
 	CheatsModel m_model;
 };

--- a/src/platform/qt/ConfigController.cpp
+++ b/src/platform/qt/ConfigController.cpp
@ -5,7 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "ConfigController.h"

-#include "GameController.h"
+#include "CoreController.h"

 #include <QAction>
 #include <QDir>
@ -98,8 +98,8 @@ ConfigController::ConfigController(QObject* parent)

 	mCoreConfigInit(&m_config, PORT);

-	m_opts.audioSync = GameController::AUDIO_SYNC;
-	m_opts.videoSync = GameController::VIDEO_SYNC;
+	m_opts.audioSync = CoreController::AUDIO_SYNC;
+	m_opts.videoSync = CoreController::VIDEO_SYNC;
 	m_opts.fpsTarget = 60;
 	m_opts.audioBuffers = 1536;
 	m_opts.sampleRate = 44100;
--- a/src/platform/qt/CoreController.cpp
+++ b/src/platform/qt/CoreController.cpp
@ -0,0 +1,698 @@
+/* Copyright (c) 2013-2017 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "CoreController.h"
+
+#include "ConfigController.h"
+#include "InputController.h"
+#include "LogController.h"
+#include "MultiplayerController.h"
+#include "Override.h"
+
+#include <QDateTime>
+#include <QMutexLocker>
+
+#include <mgba/core/serialize.h>
+#include <mgba/feature/video-logger.h>
+#ifdef M_CORE_GBA
+#include <mgba/internal/gba/gba.h>
+#include <mgba/internal/gba/renderers/tile-cache.h>
+#include <mgba/internal/gba/sharkport.h>
+#endif
+#ifdef M_CORE_GB
+#include <mgba/internal/gb/gb.h>
+#include <mgba/internal/gb/renderers/tile-cache.h>
+#endif
+#include <mgba-util/vfs.h>
+
+using namespace QGBA;
+
+
+CoreController::CoreController(mCore* core, QObject* parent)
+	: QObject(parent)
+	, m_saveStateFlags(SAVESTATE_SCREENSHOT | SAVESTATE_SAVEDATA | SAVESTATE_CHEATS | SAVESTATE_RTC)
+	, m_loadStateFlags(SAVESTATE_SCREENSHOT | SAVESTATE_RTC)
+{
+	m_threadContext.core = core;
+	m_threadContext.userData = this;
+
+	QSize size = screenDimensions();
+	m_buffers[0].resize(size.width() * size.height() * sizeof(color_t));
+	m_buffers[1].resize(size.width() * size.height() * sizeof(color_t));
+	m_activeBuffer = &m_buffers[0];
+
+	m_threadContext.core->setVideoBuffer(m_threadContext.core, reinterpret_cast<color_t*>(m_activeBuffer->data()), size.width());
+
+	m_threadContext.startCallback = [](mCoreThread* context) {
+		CoreController* controller = static_cast<CoreController*>(context->userData);
+		context->core->setPeripheral(context->core, mPERIPH_ROTATION, controller->m_inputController->rotationSource());
+		context->core->setPeripheral(context->core, mPERIPH_RUMBLE, controller->m_inputController->rumble());
+
+		switch (context->core->platform(context->core)) {
+#ifdef M_CORE_GBA
+		case PLATFORM_GBA:
+			context->core->setPeripheral(context->core, mPERIPH_GBA_LUMINANCE, controller->m_inputController->luminance());
+			break;
+#endif
+		default:
+			break;
+		}
+
+		if (controller->m_override) {
+			controller->m_override->identify(context->core);
+			controller->m_override->apply(context->core);
+		}
+
+		if (mCoreLoadState(context->core, 0, controller->m_loadStateFlags)) {
+			mCoreDeleteState(context->core, 0);
+		}
+
+		if (controller->m_multiplayer) {
+			controller->m_multiplayer->attachGame(controller);
+		}
+
+		QMetaObject::invokeMethod(controller, "started");
+	};
+
+	m_threadContext.resetCallback = [](mCoreThread* context) {
+		CoreController* controller = static_cast<CoreController*>(context->userData);
+		for (auto action : controller->m_resetActions) {
+			action();
+		}
+		controller->m_resetActions.clear();
+
+		controller->m_activeBuffer->fill(0xFF);
+		controller->finishFrame();
+	};
+
+	m_threadContext.frameCallback = [](mCoreThread* context) {
+		CoreController* controller = static_cast<CoreController*>(context->userData);
+
+		controller->finishFrame();
+	};
+
+	m_threadContext.cleanCallback = [](mCoreThread* context) {
+		CoreController* controller = static_cast<CoreController*>(context->userData);
+
+		controller->clearMultiplayerController();
+		QMetaObject::invokeMethod(controller, "stopping");
+	};
+
+	m_threadContext.logger.d.log = [](mLogger* logger, int category, enum mLogLevel level, const char* format, va_list args) {
+		mThreadLogger* logContext = reinterpret_cast<mThreadLogger*>(logger);
+		mCoreThread* context = logContext->p;
+
+		static const char* savestateMessage = "State %i loaded";
+		static const char* savestateFailedMessage = "State %i failed to load";
+		static int biosCat = -1;
+		static int statusCat = -1;
+		if (!context) {
+			return;
+		}
+		CoreController* controller = static_cast<CoreController*>(context->userData);
+		QString message;
+		if (biosCat < 0) {
+			biosCat = mLogCategoryById("gba.bios");
+		}
+		if (statusCat < 0) {
+			statusCat = mLogCategoryById("core.status");
+		}
+#ifdef M_CORE_GBA
+		if (level == mLOG_STUB && category == biosCat) {
+			va_list argc;
+			va_copy(argc, args);
+			int immediate = va_arg(argc, int);
+			va_end(argc);
+			QMetaObject::invokeMethod(controller, "unimplementedBiosCall", Q_ARG(int, immediate));
+		} else
+#endif
+		if (category == statusCat) {
+			// Slot 0 is reserved for suspend points
+			if (strncmp(savestateMessage, format, strlen(savestateMessage)) == 0) {
+				va_list argc;
+				va_copy(argc, args);
+				int slot = va_arg(argc, int);
+				va_end(argc);
+				if (slot == 0) {
+					format = "Loaded suspend state";
+				}
+			} else if (strncmp(savestateFailedMessage, format, strlen(savestateFailedMessage)) == 0) {
+				va_list argc;
+				va_copy(argc, args);
+				int slot = va_arg(argc, int);
+				va_end(argc);
+				if (slot == 0) {
+					return;
+				}
+			}
+			message = QString().vsprintf(format, args);
+			QMetaObject::invokeMethod(controller, "statusPosted", Q_ARG(const QString&, message));
+		}
+		if (level == mLOG_FATAL) {
+			mCoreThreadMarkCrashed(controller->thread());
+			QMetaObject::invokeMethod(controller, "crashed", Q_ARG(const QString&, QString().vsprintf(format, args)));
+		}
+		message = QString().vsprintf(format, args);
+		QMetaObject::invokeMethod(controller, "logPosted", Q_ARG(int, level), Q_ARG(int, category), Q_ARG(const QString&, message));
+	};
+}
+
+CoreController::~CoreController() {
+	endVideoLog();
+	stop();
+	disconnect();
+
+	if (m_tileCache) {
+		mTileCacheDeinit(m_tileCache.get());
+		m_tileCache.reset();
+	}
+
+	mCoreThreadJoin(&m_threadContext);
+
+	mCoreConfigDeinit(&m_threadContext.core->config);
+	m_threadContext.core->deinit(m_threadContext.core);
+}
+
+color_t* CoreController::drawContext() {
+	QMutexLocker locker(&m_mutex);
+	if (!m_completeBuffer) {
+		return nullptr;
+	}
+	return reinterpret_cast<color_t*>(m_completeBuffer->data());
+}
+
+bool CoreController::isPaused() {
+	return mCoreThreadIsPaused(&m_threadContext);
+}
+
+mPlatform CoreController::platform() const {
+	return m_threadContext.core->platform(m_threadContext.core);
+}
+
+QSize CoreController::screenDimensions() const {
+	unsigned width, height;
+	m_threadContext.core->desiredVideoDimensions(m_threadContext.core, &width, &height);
+
+	return QSize(width, height);
+}
+
+QPair<unsigned, unsigned> CoreController::frameRate() const {
+   return qMakePair(m_threadContext.core->frameCycles(m_threadContext.core), m_threadContext.core->frequency(m_threadContext.core));
+}
+
+void CoreController::loadConfig(ConfigController* config) {
+	Interrupter interrupter(this);
+	m_loadStateFlags = config->getOption("loadStateExtdata").toInt();
+	m_saveStateFlags = config->getOption("saveStateExtdata").toInt();
+	m_fastForwardRatio = config->getOption("fastForwardRatio").toFloat();
+	m_videoSync = config->getOption("videoSync").toInt();
+	m_audioSync = config->getOption("audioSync").toInt();
+	m_fpsTarget = config->getOption("fpsTarget").toFloat();
+	updateFastForward();
+	mCoreLoadForeignConfig(m_threadContext.core, config->config());
+	mCoreThreadRewindParamsChanged(&m_threadContext);
+}
+
+#ifdef USE_DEBUGGERS
+void CoreController::setDebugger(mDebugger* debugger) {
+	Interrupter interrupter(this);
+	if (debugger) {
+		mDebuggerAttach(debugger, m_threadContext.core);
+	} else {
+		m_threadContext.core->detachDebugger(m_threadContext.core);
+	}
+}
+#endif
+
+void CoreController::setMultiplayerController(MultiplayerController* controller) {
+	if (controller == m_multiplayer) {
+		return;
+	}
+	clearMultiplayerController();
+	m_multiplayer = controller;
+	if (!mCoreThreadHasStarted(&m_threadContext)) {
+		return;
+	}
+	mCoreThreadRunFunction(&m_threadContext, [](mCoreThread* thread) {
+		CoreController* controller = static_cast<CoreController*>(thread->userData);
+		controller->m_multiplayer->attachGame(controller);
+	});
+}
+
+void CoreController::clearMultiplayerController() {
+	if (!m_multiplayer) {
+		return;
+	}
+	m_multiplayer->detachGame(this);
+	m_multiplayer = nullptr;
+}
+
+mTileCache* CoreController::tileCache() {
+	if (m_tileCache) {
+		return m_tileCache.get();
+	}
+	Interrupter interrupter(this);
+	switch (platform()) {
+#ifdef M_CORE_GBA
+	case PLATFORM_GBA: {
+		GBA* gba = static_cast<GBA*>(m_threadContext.core->board);
+		m_tileCache = std::make_unique<mTileCache>();
+		GBAVideoTileCacheInit(m_tileCache.get());
+		GBAVideoTileCacheAssociate(m_tileCache.get(), &gba->video);
+		mTileCacheSetPalette(m_tileCache.get(), 0);
+		break;
+	}
+#endif
+#ifdef M_CORE_GB
+	case PLATFORM_GB: {
+		GB* gb = static_cast<GB*>(m_threadContext.core->board);
+		m_tileCache = std::make_unique<mTileCache>();
+		GBVideoTileCacheInit(m_tileCache.get());
+		GBVideoTileCacheAssociate(m_tileCache.get(), &gb->video);
+		mTileCacheSetPalette(m_tileCache.get(), 0);
+		break;
+	}
+#endif
+	default:
+		return nullptr;
+	}
+	return m_tileCache.get();
+}
+
+void CoreController::setOverride(std::unique_ptr<Override> override) {
+	Interrupter interrupter(this);
+	m_override = std::move(override);
+	m_override->identify(m_threadContext.core);
+}
+
+void CoreController::setInputController(InputController* inputController) {
+	m_inputController = inputController;
+	m_inputController->setPlatform(platform());
+}
+
+void CoreController::setLogger(LogController* logger) {
+	disconnect(m_log);
+	m_log = logger;
+	m_threadContext.logger.d.filter = logger->filter();
+	connect(this, &CoreController::logPosted, m_log, &LogController::postLog);
+}
+
+void CoreController::start() {
+	if (!m_patched) {
+		mCoreAutoloadPatch(m_threadContext.core);
+	}
+	if (!mCoreThreadStart(&m_threadContext)) {
+		emit failed();
+		emit stopping();
+	}
+}
+
+void CoreController::stop() {
+#ifdef USE_DEBUGGERS
+	setDebugger(nullptr);
+#endif
+	setPaused(false);
+	mCoreThreadEnd(&m_threadContext);
+	emit stopping();
+}
+
+void CoreController::reset() {
+	bool wasPaused = isPaused();
+	setPaused(false);
+	Interrupter interrupter(this);
+	mCoreThreadReset(&m_threadContext);
+	if (wasPaused) {
+		setPaused(true);
+	}
+}
+
+void CoreController::setPaused(bool paused) {
+	if (paused == isPaused()) {
+		return;
+	}
+	if (paused) {
+		QMutexLocker locker(&m_mutex);
+		m_frameActions.append([this]() {
+			mCoreThreadPauseFromThread(&m_threadContext);
+			QMetaObject::invokeMethod(this, "paused");
+		});
+	} else {
+		mCoreThreadUnpause(&m_threadContext);
+		emit unpaused();
+	}
+}
+
+void CoreController::frameAdvance() {
+	QMutexLocker locker(&m_mutex);
+	m_frameActions.append([this]() {
+		mCoreThreadPauseFromThread(&m_threadContext);
+	});
+	setPaused(false);
+}
+
+void CoreController::setSync(bool sync) {
+	if (sync) {
+		m_threadContext.impl->sync.audioWait = m_audioSync;
+		m_threadContext.impl->sync.videoFrameWait = m_videoSync;
+	} else {
+		m_threadContext.impl->sync.audioWait = false;
+		m_threadContext.impl->sync.videoFrameWait = false;
+	}
+}
+
+void CoreController::setRewinding(bool rewind) {
+	if (!m_threadContext.core->opts.rewindEnable) {
+		return;
+	}
+	if (rewind && m_multiplayer && m_multiplayer->attached() > 1) {
+		return;
+	}
+
+	if (rewind && isPaused()) {
+		setPaused(false);
+		// TODO: restore autopausing
+	}
+	mCoreThreadSetRewinding(&m_threadContext, rewind);
+}
+
+void CoreController::rewind(int states) {
+	{
+		Interrupter interrupter(this);
+		if (!states) {
+			states = INT_MAX;
+		}
+		for (int i = 0; i < states; ++i) {
+			if (!mCoreRewindRestore(&m_threadContext.impl->rewind, m_threadContext.core)) {
+				break;
+			}
+		}
+	}
+	emit frameAvailable();
+	emit rewound();
+}
+
+void CoreController::setFastForward(bool enable) {
+	m_fastForward = enable;
+	updateFastForward();
+}
+
+void CoreController::forceFastForward(bool enable) {
+	m_fastForwardForced = enable;
+	updateFastForward();
+}
+
+void CoreController::loadState(int slot) {
+	if (slot > 0 && slot != m_stateSlot) {
+		m_stateSlot = slot;
+		m_backupSaveState.clear();
+	}
+	mCoreThreadRunFunction(&m_threadContext, [](mCoreThread* context) {
+		CoreController* controller = static_cast<CoreController*>(context->userData);
+		if (!controller->m_backupLoadState.isOpen()) {
+			controller->m_backupLoadState = VFileMemChunk(nullptr, 0);
+		}
+		mCoreLoadStateNamed(context->core, controller->m_backupLoadState, controller->m_saveStateFlags);
+		if (mCoreLoadState(context->core, controller->m_stateSlot, controller->m_loadStateFlags)) {
+			emit controller->frameAvailable();
+			emit controller->stateLoaded();
+		}
+	});
+}
+
+void CoreController::saveState(int slot) {
+	if (slot > 0) {
+		m_stateSlot = slot;
+	}
+	mCoreThreadRunFunction(&m_threadContext, [](mCoreThread* context) {
+		CoreController* controller = static_cast<CoreController*>(context->userData);
+		VFile* vf = mCoreGetState(context->core, controller->m_stateSlot, false);
+		if (vf) {
+			controller->m_backupSaveState.resize(vf->size(vf));
+			vf->read(vf, controller->m_backupSaveState.data(), controller->m_backupSaveState.size());
+			vf->close(vf);
+		}
+		mCoreSaveState(context->core, controller->m_stateSlot, controller->m_saveStateFlags);
+	});
+}
+
+void CoreController::loadBackupState() {
+	if (!m_backupLoadState.isOpen()) {
+		return;
+	}
+
+	mCoreThreadRunFunction(&m_threadContext, [](mCoreThread* context) {
+		CoreController* controller = static_cast<CoreController*>(context->userData);
+		controller->m_backupLoadState.seek(0);
+		if (mCoreLoadStateNamed(context->core, controller->m_backupLoadState, controller->m_loadStateFlags)) {
+			mLOG(STATUS, INFO, "Undid state load");
+			controller->frameAvailable();
+			controller->stateLoaded();
+		}
+		controller->m_backupLoadState.close();
+	});
+}
+
+void CoreController::saveBackupState() {
+	if (m_backupSaveState.isEmpty()) {
+		return;
+	}
+
+	mCoreThreadRunFunction(&m_threadContext, [](mCoreThread* context) {
+		CoreController* controller = static_cast<CoreController*>(context->userData);
+		VFile* vf = mCoreGetState(context->core, controller->m_stateSlot, true);
+		if (vf) {
+			vf->write(vf, controller->m_backupSaveState.constData(), controller->m_backupSaveState.size());
+			vf->close(vf);
+			mLOG(STATUS, INFO, "Undid state save");
+		}
+		controller->m_backupSaveState.clear();
+	});
+}
+
+void CoreController::loadSave(const QString& path, bool temporary) {
+	m_resetActions.append([this, path, temporary]() {
+		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);
+		}
+	});
+	reset();
+}
+
+void CoreController::loadPatch(const QString& patchPath) {
+	Interrupter interrupter(this);
+	VFile* patch = VFileDevice::open(patchPath, O_RDONLY);
+	if (patch) {
+		m_threadContext.core->loadPatch(m_threadContext.core, patch);
+		m_patched = true;
+	}
+	patch->close(patch);
+	if (mCoreThreadHasStarted(&m_threadContext)) {
+		reset();
+	}
+}
+
+void CoreController::replaceGame(const QString& path) {
+	QFileInfo info(path);
+	if (!info.isReadable()) {
+		LOG(QT, ERROR) << tr("Failed to open game file: %1").arg(path);
+		return;
+	}
+	QString fname = info.canonicalFilePath();
+	Interrupter interrupter(this);
+	mDirectorySetDetachBase(&m_threadContext.core->dirs);
+	mCoreLoadFile(m_threadContext.core, fname.toLocal8Bit().constData());
+}
+
+void CoreController::yankPak() {
+#ifdef M_CORE_GBA
+	if (platform() != PLATFORM_GBA) {
+		return;
+	}
+	Interrupter interrupter(this);
+	GBAYankROM(static_cast<GBA*>(m_threadContext.core->board));
+#endif
+}
+
+#ifdef USE_PNG
+void CoreController::screenshot() {
+	mCoreThreadRunFunction(&m_threadContext, [](mCoreThread* context) {
+		mCoreTakeScreenshot(context->core);
+	});
+}
+#endif
+
+void CoreController::setRealTime() {
+	m_threadContext.core->rtc.override = RTC_NO_OVERRIDE;
+}
+
+void CoreController::setFixedTime(const QDateTime& time) {
+	m_threadContext.core->rtc.override = RTC_FIXED;
+	m_threadContext.core->rtc.value = time.toMSecsSinceEpoch();
+}
+
+void CoreController::setFakeEpoch(const QDateTime& time) {
+	m_threadContext.core->rtc.override = RTC_FAKE_EPOCH;
+	m_threadContext.core->rtc.value = time.toMSecsSinceEpoch();
+}
+
+void CoreController::importSharkport(const QString& path) {
+#ifdef M_CORE_GBA
+	if (platform() != PLATFORM_GBA) {
+		return;
+	}
+	VFile* vf = VFileDevice::open(path, O_RDONLY);
+	if (!vf) {
+		LOG(QT, ERROR) << tr("Failed to open snapshot file for reading: %1").arg(path);
+		return;
+	}
+	Interrupter interrupter(this);
+	GBASavedataImportSharkPort(static_cast<GBA*>(m_threadContext.core->board), vf, false);
+	vf->close(vf);
+#endif
+}
+
+void CoreController::exportSharkport(const QString& path) {
+#ifdef M_CORE_GBA
+	if (platform() != PLATFORM_GBA) {
+		return;
+	}
+	VFile* vf = VFileDevice::open(path, O_WRONLY | O_CREAT | O_TRUNC);
+	if (!vf) {
+		LOG(QT, ERROR) << tr("Failed to open snapshot file for writing: %1").arg(path);
+		return;
+	}
+	Interrupter interrupter(this);
+	GBASavedataExportSharkPort(static_cast<GBA*>(m_threadContext.core->board), vf);
+	vf->close(vf);
+#endif
+}
+
+void CoreController::setAVStream(mAVStream* stream) {
+	Interrupter interrupter(this);
+	m_threadContext.core->setAVStream(m_threadContext.core, stream);
+}
+
+void CoreController::clearAVStream() {
+	Interrupter interrupter(this);
+	m_threadContext.core->setAVStream(m_threadContext.core, nullptr);
+}
+
+void CoreController::clearOverride() {
+	m_override.reset();
+}
+
+void CoreController::startVideoLog(const QString& path) {
+	if (m_vl) {
+		return;
+	}
+
+	Interrupter interrupter(this);
+	m_vl = mVideoLogContextCreate(m_threadContext.core);
+	m_vlVf = VFileDevice::open(path, O_WRONLY | O_CREAT | O_TRUNC);
+	mVideoLogContextSetOutput(m_vl, m_vlVf);
+	mVideoLogContextWriteHeader(m_vl, m_threadContext.core);
+}
+
+void CoreController::endVideoLog() {
+	if (!m_vl) {
+		return;
+	}
+
+	Interrupter interrupter(this);
+	mVideoLogContextDestroy(m_threadContext.core, m_vl);
+	if (m_vlVf) {
+		m_vlVf->close(m_vlVf);
+		m_vlVf = nullptr;
+	}
+	m_vl = nullptr;
+}
+
+void CoreController::updateKeys() {
+	int activeKeys = m_inputController->updateAutofire() | m_inputController->pollEvents();
+	m_threadContext.core->setKeys(m_threadContext.core, activeKeys);
+}
+
+void CoreController::finishFrame() {
+	QMutexLocker locker(&m_mutex);
+	m_completeBuffer = m_activeBuffer;
+
+	// TODO: Generalize this to triple buffering?
+	m_activeBuffer = &m_buffers[0];
+	if (m_activeBuffer == m_completeBuffer) {
+		m_activeBuffer = &m_buffers[1];
+	}
+	m_threadContext.core->setVideoBuffer(m_threadContext.core, reinterpret_cast<color_t*>(m_activeBuffer->data()), screenDimensions().width());
+
+	for (auto& action : m_frameActions) {
+		action();
+	}
+	m_frameActions.clear();
+	updateKeys();
+
+	QMetaObject::invokeMethod(this, "frameAvailable");
+}
+
+void CoreController::updateFastForward() {
+	if (m_fastForward || m_fastForwardForced) {
+		if (m_fastForwardRatio > 0) {
+			m_threadContext.impl->sync.fpsTarget = m_fpsTarget * m_fastForwardRatio;
+		} else {
+			setSync(false);
+		}
+	} else {
+		m_threadContext.impl->sync.fpsTarget = m_fpsTarget;
+		setSync(true);
+	}
+}
+
+CoreController::Interrupter::Interrupter(CoreController* parent, bool fromThread)
+	: m_parent(parent)
+{
+	if (!m_parent->thread()->impl) {
+		return;
+	}
+	if (!fromThread) {
+		mCoreThreadInterrupt(m_parent->thread());
+	} else {
+		mCoreThreadInterruptFromThread(m_parent->thread());
+	}
+}
+
+CoreController::Interrupter::Interrupter(std::shared_ptr<CoreController> parent, bool fromThread)
+	: m_parent(parent.get())
+{
+	if (!m_parent->thread()->impl) {
+		return;
+	}
+	if (!fromThread) {
+		mCoreThreadInterrupt(m_parent->thread());
+	} else {
+		mCoreThreadInterruptFromThread(m_parent->thread());
+	}
+}
+
+CoreController::Interrupter::Interrupter(const Interrupter& other)
+	: m_parent(other.m_parent)
+{
+	if (!m_parent->thread()->impl) {
+		return;
+	}
+	mCoreThreadInterrupt(m_parent->thread());
+}
+
+CoreController::Interrupter::~Interrupter() {
+	if (!m_parent->thread()->impl) {
+		return;
+	}
+	mCoreThreadContinue(m_parent->thread());
+}
--- a/src/platform/qt/CoreController.h
+++ b/src/platform/qt/CoreController.h
@ -0,0 +1,194 @@
+/* Copyright (c) 2013-2017 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef QGBA_CORE_CONTROLLER
+#define QGBA_CORE_CONTROLLER
+
+#include <QByteArray>
+#include <QList>
+#include <QMutex>
+#include <QObject>
+#include <QSize>
+
+#include "VFileDevice.h"
+
+#include <functional>
+#include <memory>
+
+#include <mgba/core/core.h>
+#include <mgba/core/interface.h>
+#include <mgba/core/thread.h>
+#include <mgba/core/tile-cache.h>
+
+struct mCore;
+
+namespace QGBA {
+
+class ConfigController;
+class InputController;
+class LogController;
+class MultiplayerController;
+class Override;
+
+class CoreController : public QObject {
+Q_OBJECT
+
+public:
+	static const bool VIDEO_SYNC = false;
+	static const bool AUDIO_SYNC = true;
+
+	class Interrupter {
+	public:
+		Interrupter(CoreController*, bool fromThread = false);
+		Interrupter(std::shared_ptr<CoreController>, bool fromThread = false);
+		Interrupter(const Interrupter&);
+		~Interrupter();
+
+	private:
+		CoreController* m_parent;
+	};
+
+	CoreController(mCore* core, QObject* parent = nullptr);
+	~CoreController();
+
+	mCoreThread* thread() { return &m_threadContext; }
+
+	color_t* drawContext();
+
+	bool isPaused();
+
+	mPlatform platform() const;
+	QSize screenDimensions() const;
+	QPair<unsigned, unsigned> frameRate() const;
+
+	void loadConfig(ConfigController*);
+
+	mCheatDevice* cheatDevice() { return m_threadContext.core->cheatDevice(m_threadContext.core); }
+
+#ifdef USE_DEBUGGERS
+	mDebugger* debugger() { return m_threadContext.core->debugger; }
+	void setDebugger(mDebugger*);
+#endif
+
+	void setMultiplayerController(MultiplayerController*);
+	void clearMultiplayerController();
+	MultiplayerController* multiplayerController() { return m_multiplayer; }
+
+	mTileCache* tileCache();
+	int stateSlot() const { return m_stateSlot; }
+
+	void setOverride(std::unique_ptr<Override> override);
+	Override* override() { return m_override.get(); }
+
+	void setInputController(InputController*);
+	void setLogger(LogController*);
+
+public slots:
+	void start();
+	void stop();
+	void reset();
+	void setPaused(bool paused);
+	void frameAdvance();
+	void setSync(bool enable);
+
+	void setRewinding(bool);
+	void rewind(int count = 0);
+
+	void setFastForward(bool);
+	void forceFastForward(bool);
+
+	void loadState(int slot = 0);
+	void saveState(int slot = 0);
+	void loadBackupState();
+	void saveBackupState();
+
+	void loadSave(const QString&, bool temporary);
+	void loadPatch(const QString&);
+	void replaceGame(const QString&);
+	void yankPak();
+
+#ifdef USE_PNG
+	void screenshot();
+#endif
+
+	void setRealTime();
+	void setFixedTime(const QDateTime& time);
+	void setFakeEpoch(const QDateTime& time);
+
+	void importSharkport(const QString& path);
+	void exportSharkport(const QString& path);
+
+	void setAVStream(mAVStream*);
+	void clearAVStream();
+
+	void clearOverride();
+
+	void startVideoLog(const QString& path);
+	void endVideoLog();
+
+signals:
+	void started();
+	void paused();
+	void unpaused();
+	void stopping();
+	void crashed(const QString& errorMessage);
+	void failed();
+	void frameAvailable();
+	void stateLoaded();
+	void rewound();
+
+	void rewindChanged(bool);
+	void fastForwardChanged(bool);
+
+	void unimplementedBiosCall(int);
+	void statusPosted(const QString& message);
+	void logPosted(int level, int category, const QString& log);
+
+private:
+	void updateKeys();
+	void finishFrame();
+
+	void updateFastForward();
+
+	mCoreThread m_threadContext{};
+
+	bool m_patched = false;
+
+	QByteArray m_buffers[2];
+	QByteArray* m_activeBuffer;
+	QByteArray* m_completeBuffer = nullptr;
+
+	std::unique_ptr<mTileCache> m_tileCache;
+	std::unique_ptr<Override> m_override;
+
+	QList<std::function<void()>> m_resetActions;
+	QList<std::function<void()>> m_frameActions;
+	QMutex m_mutex;
+
+	VFileDevice m_backupLoadState;
+	QByteArray m_backupSaveState{nullptr};
+	int m_stateSlot = 1;
+	int m_loadStateFlags;
+	int m_saveStateFlags;
+
+	bool m_audioSync = AUDIO_SYNC;
+	bool m_videoSync = VIDEO_SYNC;
+
+	int m_fastForward = false;
+	int m_fastForwardForced = false;
+	float m_fastForwardRatio = -1.f;
+	float m_fpsTarget;
+
+	InputController* m_inputController = nullptr;
+	LogController* m_log = nullptr;
+	MultiplayerController* m_multiplayer = nullptr;
+
+	mVideoLogContext* m_vl = nullptr;
+	VFile* m_vlVf = nullptr;
+};
+
+}
+
+#endif
--- a/src/platform/qt/CoreManager.cpp
+++ b/src/platform/qt/CoreManager.cpp
@ -0,0 +1,165 @@
+/* Copyright (c) 2013-2017 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "CoreManager.h"
+
+#include "CoreController.h"
+#include "LogController.h"
+
+#include <QDir>
+
+#ifdef M_CORE_GBA
+#include <mgba/gba/core.h>
+#endif
+
+#include <mgba/core/core.h>
+#include <mgba-util/vfs.h>
+
+using namespace QGBA;
+
+void CoreManager::setConfig(const mCoreConfig* config) {
+	m_config = config;
+}
+
+void CoreManager::setMultiplayerController(MultiplayerController* multiplayer) {
+	m_multiplayer = multiplayer;
+}
+
+CoreController* CoreManager::loadGame(const QString& path) {
+	QFileInfo info(path);
+	if (!info.isReadable()) {
+		QString fname = info.fileName();
+		QString base = info.path();
+		if (base.endsWith("/") || base.endsWith(QDir::separator())) {
+			base.chop(1);
+		}
+		VDir* dir = VDirOpenArchive(base.toUtf8().constData());
+		if (dir) {
+			VFile* vf = dir->openFile(dir, fname.toUtf8().constData(), O_RDONLY);
+			if (vf) {
+				struct VFile* vfclone = VFileMemChunk(NULL, vf->size(vf));
+				uint8_t buffer[2048];
+				ssize_t read;
+				while ((read = vf->read(vf, buffer, sizeof(buffer))) > 0) {
+					vfclone->write(vfclone, buffer, read);
+				}
+				vf->close(vf);
+				vf = vfclone;
+			}
+			dir->close(dir);
+			loadGame(vf, fname, base);
+		} else {
+			LOG(QT, ERROR) << tr("Failed to open game file: %1").arg(path);
+		}
+		return nullptr;
+	}
+	VFile* vf = nullptr;
+	VDir* archive = VDirOpenArchive(path.toUtf8().constData());
+	if (archive) {
+		VFile* vfOriginal = VDirFindFirst(archive, [](VFile* vf) {
+			return mCoreIsCompatible(vf) != PLATFORM_NONE;
+		});
+		ssize_t size;
+		if (vfOriginal && (size = vfOriginal->size(vfOriginal)) > 0) {
+			void* mem = vfOriginal->map(vfOriginal, size, MAP_READ);
+			vf = VFileMemChunk(mem, size);
+			vfOriginal->unmap(vfOriginal, mem, (size_t) read);
+			vfOriginal->close(vfOriginal);
+		}
+	}
+	QDir dir(info.dir());
+	if (!vf) {
+		vf = VFileOpen(info.canonicalFilePath().toUtf8().constData(), O_RDONLY);
+	}
+	return loadGame(vf, info.fileName(), dir.canonicalPath());
+}
+
+CoreController* CoreManager::loadGame(VFile* vf, const QString& path, const QString& base) {
+	if (!vf) {
+		return nullptr;
+	}
+
+	mCore* core = mCoreFindVF(vf);
+	if (!core) {
+		return nullptr;
+	}
+
+	core->init(core);
+	mCoreInitConfig(core, nullptr);
+
+	if (m_config) {
+		mCoreLoadForeignConfig(core, m_config);
+	}
+
+	if (m_preload) {
+		mCorePreloadVF(core, vf);
+	} else {
+		core->loadROM(core, vf);
+	}
+
+	QFileInfo info(base + "/" + path);
+	QByteArray bytes(info.baseName().toUtf8());
+	strncpy(core->dirs.baseName, bytes.constData(), sizeof(core->dirs.baseName));
+
+	bytes = info.dir().canonicalPath().toUtf8();
+	mDirectorySetAttachBase(&core->dirs, VDirOpen(bytes.constData()));
+	mCoreAutoloadSave(core);
+
+	CoreController* cc = new CoreController(core);
+	if (m_multiplayer) {
+		cc->setMultiplayerController(m_multiplayer);
+	}
+	emit coreLoaded(cc);
+	return cc;
+}
+
+CoreController* CoreManager::loadBIOS(int platform, const QString& path) {
+	QFileInfo info(path);
+	VFile* vf = VFileOpen(info.canonicalFilePath().toUtf8().constData(), O_RDONLY);
+	if (!vf) {
+		return nullptr;
+	}
+
+	mCore* core = nullptr;
+	switch (platform) {
+#ifdef M_CORE_GBA
+	case PLATFORM_GBA:
+		core = GBACoreCreate();
+		break;
+#endif
+	default:
+		vf->close(vf);
+		return nullptr;
+	}
+	if (!core) {
+		vf->close(vf);
+		return nullptr;
+	}
+
+	core->init(core);
+	mCoreInitConfig(core, nullptr);
+
+	if (m_config) {
+		mCoreLoadForeignConfig(core, m_config);
+	}
+
+	core->loadBIOS(core, vf, 0);
+
+	mCoreConfigSetOverrideIntValue(&core->config, "useBios", 1);
+	mCoreConfigSetOverrideIntValue(&core->config, "skipBios", 0);
+
+	QByteArray bytes(info.baseName().toUtf8());
+	strncpy(core->dirs.baseName, bytes.constData(), sizeof(core->dirs.baseName));
+
+	bytes = info.dir().canonicalPath().toUtf8();
+	mDirectorySetAttachBase(&core->dirs, VDirOpen(bytes.constData()));
+
+	CoreController* cc = new CoreController(core);
+	if (m_multiplayer) {
+		cc->setMultiplayerController(m_multiplayer);
+	}
+	emit coreLoaded(cc);
+	return cc;
+}
--- a/src/platform/qt/CoreManager.h
+++ b/src/platform/qt/CoreManager.h
@ -0,0 +1,45 @@
+/* Copyright (c) 2013-2017 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef QGBA_CORE_MANAGER
+#define QGBA_CORE_MANAGER
+
+#include <QFileInfo>
+#include <QObject>
+#include <QString>
+
+struct mCoreConfig;
+struct VFile;
+
+namespace QGBA {
+
+class CoreController;
+class MultiplayerController;
+
+class CoreManager : public QObject {
+Q_OBJECT
+
+public:
+	void setConfig(const mCoreConfig*);
+	void setMultiplayerController(MultiplayerController*);
+	void setPreload(bool preload) { m_preload = preload; }
+
+public slots:
+	CoreController* loadGame(const QString& path);
+	CoreController* loadGame(VFile* vf, const QString& path, const QString& base);
+	CoreController* loadBIOS(int platform, const QString& path);
+
+signals:
+	void coreLoaded(CoreController*);
+
+private:
+	const mCoreConfig* m_config = nullptr;
+	MultiplayerController* m_multiplayer = nullptr;
+	bool m_preload = false;
+};
+
+}
+
+#endif
--- a/src/platform/qt/DebuggerConsoleController.cpp
+++ b/src/platform/qt/DebuggerConsoleController.cpp
@ -5,7 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "DebuggerConsoleController.h"

-#include "GameController.h"
+#include "CoreController.h"

 #include <QMutexLocker>

@ -13,8 +13,8 @@

 using namespace QGBA;

-DebuggerConsoleController::DebuggerConsoleController(GameController* controller, QObject* parent)
-	: DebuggerController(controller, &m_cliDebugger.d, parent)
+DebuggerConsoleController::DebuggerConsoleController(QObject* parent)
+	: DebuggerController(&m_cliDebugger.d, parent)
 {
 	m_backend.d.printf = printf;
 	m_backend.d.init = init;
@ -39,8 +39,10 @@ void DebuggerConsoleController::enterLine(const QString& line) {
 }

 void DebuggerConsoleController::detach() {
-	m_lines.append(QString());
-	m_cond.wakeOne();
+	if (m_cliDebugger.d.state != DEBUGGER_SHUTDOWN) {
+		m_lines.append(QString());
+		m_cond.wakeOne();
+	}
 	DebuggerController::detach();
 }

@ -68,14 +70,16 @@ void DebuggerConsoleController::init(struct CLIDebuggerBackend* be) {
 void DebuggerConsoleController::deinit(struct CLIDebuggerBackend* be) {
 	Backend* consoleBe = reinterpret_cast<Backend*>(be);
 	DebuggerConsoleController* self = consoleBe->self;
-	self->m_lines.append(QString());
-	self->m_cond.wakeOne();
+	if (be->p->d.state != DEBUGGER_SHUTDOWN) {
+		self->m_lines.append(QString());
+		self->m_cond.wakeOne();
+	}
 }

 const char* DebuggerConsoleController::readLine(struct CLIDebuggerBackend* be, size_t* len) {
 	Backend* consoleBe = reinterpret_cast<Backend*>(be);
 	DebuggerConsoleController* self = consoleBe->self;
-	GameController::Interrupter interrupter(self->m_gameController, true);
+	CoreController::Interrupter interrupter(self->m_gameController, true);
 	QMutexLocker lock(&self->m_mutex);
 	while (self->m_lines.isEmpty()) {
 		self->m_cond.wait(&self->m_mutex);
@ -99,7 +103,7 @@ void DebuggerConsoleController::lineAppend(struct CLIDebuggerBackend* be, const
 const char* DebuggerConsoleController::historyLast(struct CLIDebuggerBackend* be, size_t* len) {
 	Backend* consoleBe = reinterpret_cast<Backend*>(be);
 	DebuggerConsoleController* self = consoleBe->self;
-	GameController::Interrupter interrupter(self->m_gameController, true);
+	CoreController::Interrupter interrupter(self->m_gameController, true);
 	QMutexLocker lock(&self->m_mutex);
 	if (self->m_history.isEmpty()) {
 		return "i";
@ -111,7 +115,7 @@ const char* DebuggerConsoleController::historyLast(struct CLIDebuggerBackend* be
 void DebuggerConsoleController::historyAppend(struct CLIDebuggerBackend* be, const char* line) {
 	Backend* consoleBe = reinterpret_cast<Backend*>(be);
 	DebuggerConsoleController* self = consoleBe->self;
-	GameController::Interrupter interrupter(self->m_gameController, true);
+	CoreController::Interrupter interrupter(self->m_gameController, true);
 	QMutexLocker lock(&self->m_mutex);
 	self->m_history.append(QString::fromUtf8(line));
 }
--- a/src/platform/qt/DebuggerConsoleController.h
+++ b/src/platform/qt/DebuggerConsoleController.h
@ -16,13 +16,13 @@

 namespace QGBA {

-class GameController;
+class CoreController;

 class DebuggerConsoleController : public DebuggerController {
 Q_OBJECT

 public:
-	DebuggerConsoleController(GameController* controller, QObject* parent = nullptr);
+	DebuggerConsoleController(QObject* parent = nullptr);

 signals:
 	void log(const QString&);
@ -44,7 +44,7 @@ private:
 	static const char* historyLast(struct CLIDebuggerBackend* be, size_t* len);
 	static void historyAppend(struct CLIDebuggerBackend* be, const char* line);

-	CLIDebugger m_cliDebugger;
+	CLIDebugger m_cliDebugger{};

 	QMutex m_mutex;
 	QWaitCondition m_cond;
--- a/src/platform/qt/DebuggerController.cpp
+++ b/src/platform/qt/DebuggerController.cpp
@ -5,32 +5,44 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "GDBController.h"

-#include "GameController.h"
+#include "CoreController.h"

 using namespace QGBA;

-DebuggerController::DebuggerController(GameController* controller, mDebugger* debugger, QObject* parent)
+DebuggerController::DebuggerController(mDebugger* debugger, QObject* parent)
 	: QObject(parent)
 	, m_debugger(debugger)
-	, m_gameController(controller)
 {
 }

 bool DebuggerController::isAttached() {
+	if (!m_gameController) {
+		return false;
+	}
 	return m_gameController->debugger() == m_debugger;
 }

+void DebuggerController::setController(std::shared_ptr<CoreController> controller) {
+	if (m_gameController && controller != m_gameController) {
+		m_gameController->disconnect(this);
+		detach();
+	}
+	m_gameController = controller;
+	if (controller) {
+		connect(m_gameController.get(), &CoreController::stopping, [this]() {
+			setController(nullptr);
+		});
+	}
+}
+
 void DebuggerController::attach() {
 	if (isAttached()) {
 		return;
 	}
-	if (m_gameController->isLoaded()) {
+	if (m_gameController) {
 		attachInternal();
 		m_gameController->setDebugger(m_debugger);
 		mDebuggerEnter(m_debugger, DEBUGGER_ENTER_ATTACHED, 0);
-	} else {
-		QObject::disconnect(m_autoattach);
-		m_autoattach = connect(m_gameController, &GameController::gameStarted, this, &DebuggerController::attach);
 	}
 }

@ -39,16 +51,18 @@ void DebuggerController::detach() {
 	if (!isAttached()) {
 		return;
 	}
-	GameController::Interrupter interrupter(m_gameController);
-	shutdownInternal();
-	m_gameController->setDebugger(nullptr);
+	if (m_gameController) {
+		CoreController::Interrupter interrupter(m_gameController);
+		shutdownInternal();
+		m_gameController->setDebugger(nullptr);
+	}
 }

 void DebuggerController::breakInto() {
 	if (!isAttached()) {
 		return;
 	}
-	GameController::Interrupter interrupter(m_gameController);
+	CoreController::Interrupter interrupter(m_gameController);
 	mDebuggerEnter(m_debugger, DEBUGGER_ENTER_MANUAL, 0);
 }

@ -57,7 +71,7 @@ void DebuggerController::shutdown() {
 	if (!isAttached()) {
 		return;
 	}
-	GameController::Interrupter interrupter(m_gameController);
+	CoreController::Interrupter interrupter(m_gameController);
 	shutdownInternal();
 }

--- a/src/platform/qt/DebuggerController.h
+++ b/src/platform/qt/DebuggerController.h
@ -8,20 +8,23 @@

 #include <QObject>

+#include <memory>
+
 struct mDebugger;

 namespace QGBA {

-class GameController;
+class CoreController;

 class DebuggerController : public QObject {
 Q_OBJECT

 public:
-	DebuggerController(GameController* controller, mDebugger* debugger, QObject* parent = nullptr);
+	DebuggerController(mDebugger* debugger, QObject* parent = nullptr);

 public:
 	bool isAttached();
+	void setController(std::shared_ptr<CoreController>);

 public slots:
 	virtual void attach();
@ -34,7 +37,7 @@ protected:
 	virtual void shutdownInternal();

 	mDebugger* const m_debugger;
-	GameController* const m_gameController;
+	std::shared_ptr<CoreController> m_gameController;

 private:
 	QMetaObject::Connection m_autoattach;
--- a/src/platform/qt/Display.h
+++ b/src/platform/qt/Display.h
@ -8,16 +8,19 @@

 #include <mgba-util/common.h>

+#include <memory>
+
 #include <QWidget>

 #include "MessagePainter.h"

-struct mCoreThread;
 struct VDir;
 struct VideoShader;

 namespace QGBA {

+class CoreController;
+
 class Display : public QWidget {
 Q_OBJECT

@ -41,6 +44,7 @@ public:
 	bool isIntegerScalingLocked() const { return m_lockIntegerScaling; }
 	bool isFiltered() const { return m_filter; }

+	virtual void startDrawing(std::shared_ptr<CoreController>) = 0;
 	virtual bool isDrawing() const = 0;
 	virtual bool supportsShaders() const = 0;
 	virtual VideoShader* shaders() = 0;
@ -52,7 +56,6 @@ signals:
 	void hideCursor();

 public slots:
-	virtual void startDrawing(mCoreThread* context) = 0;
 	virtual void stopDrawing() = 0;
 	virtual void pauseDrawing() = 0;
 	virtual void unpauseDrawing() = 0;
@ -60,7 +63,7 @@ public slots:
 	virtual void lockAspectRatio(bool lock);
 	virtual void lockIntegerScaling(bool lock);
 	virtual void filter(bool filter);
-	virtual void framePosted(const uint32_t*) = 0;
+	virtual void framePosted() = 0;
 	virtual void setShaders(struct VDir*) = 0;
 	virtual void clearShaders() = 0;

--- a/src/platform/qt/DisplayGL.cpp
+++ b/src/platform/qt/DisplayGL.cpp
@ -7,12 +7,13 @@

 #if defined(BUILD_GL) || defined(BUILD_GLES)

+#include "CoreController.h"
+
 #include <QApplication>
 #include <QResizeEvent>
 #include <QTimer>

 #include <mgba/core/core.h>
-#include <mgba/core/thread.h>
 #ifdef BUILD_GL
 #include "platform/opengl/gl.h"
 #endif
@ -52,14 +53,17 @@ VideoShader* DisplayGL::shaders() {
 	return shaders;
 }

-void DisplayGL::startDrawing(mCoreThread* thread) {
+void DisplayGL::startDrawing(std::shared_ptr<CoreController> controller) {
 	if (m_drawThread) {
 		return;
 	}
+	QSize dims = controller->screenDimensions();
+	setSystemDimensions(dims.width(), dims.height());
+
 	m_isDrawing = true;
-	m_painter->setContext(thread);
+	m_painter->setContext(controller);
 	m_painter->setMessagePainter(messagePainter());
-	m_context = thread;
+	m_context = controller;
 	m_painter->resize(size());
 	m_gl->move(0, 0);
 	m_drawThread = new QThread(this);
@ -69,15 +73,10 @@ void DisplayGL::startDrawing(mCoreThread* thread) {
 	m_painter->moveToThread(m_drawThread);
 	connect(m_drawThread, &QThread::started, m_painter, &PainterGL::start);
 	m_drawThread->start();
-	mCoreSyncSetVideoSync(&m_context->impl->sync, false);

 	lockAspectRatio(isAspectRatioLocked());
 	lockIntegerScaling(isIntegerScalingLocked());

-	unsigned width, height;
-	thread->core->desiredVideoDimensions(thread->core, &width, &height);
-	setSystemDimensions(width, height);
-
 	filter(isFiltered());
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
 	messagePainter()->resize(size(), isAspectRatioLocked(), devicePixelRatioF());
@ -90,41 +89,27 @@ void DisplayGL::startDrawing(mCoreThread* thread) {
 void DisplayGL::stopDrawing() {
 	if (m_drawThread) {
 		m_isDrawing = false;
-		if (mCoreThreadIsActive(m_context)) {
-			mCoreThreadInterrupt(m_context);
-		}
+		CoreController::Interrupter interrupter(m_context);
 		QMetaObject::invokeMethod(m_painter, "stop", Qt::BlockingQueuedConnection);
 		m_drawThread->exit();
 		m_drawThread = nullptr;
-		if (mCoreThreadIsActive(m_context)) {
-			mCoreThreadContinue(m_context);
-		}
 	}
+	m_context.reset();
 }

 void DisplayGL::pauseDrawing() {
 	if (m_drawThread) {
 		m_isDrawing = false;
-		if (mCoreThreadIsActive(m_context)) {
-			mCoreThreadInterrupt(m_context);
-		}
+		CoreController::Interrupter interrupter(m_context);
 		QMetaObject::invokeMethod(m_painter, "pause", Qt::BlockingQueuedConnection);
-		if (mCoreThreadIsActive(m_context)) {
-			mCoreThreadContinue(m_context);
-		}
 	}
 }

 void DisplayGL::unpauseDrawing() {
 	if (m_drawThread) {
 		m_isDrawing = true;
-		if (mCoreThreadIsActive(m_context)) {
-			mCoreThreadInterrupt(m_context);
-		}
+		CoreController::Interrupter interrupter(m_context);
 		QMetaObject::invokeMethod(m_painter, "unpause", Qt::BlockingQueuedConnection);
-		if (mCoreThreadIsActive(m_context)) {
-			mCoreThreadContinue(m_context);
-		}
 	}
 }

@ -155,9 +140,9 @@ void DisplayGL::filter(bool filter) {
 	}
 }

-void DisplayGL::framePosted(const uint32_t* buffer) {
-	if (m_drawThread && buffer) {
-		m_painter->enqueue(buffer);
+void DisplayGL::framePosted() {
+	if (m_drawThread) {
+		m_painter->enqueue(m_context->drawContext());
 		QMetaObject::invokeMethod(m_painter, "draw");
 	}
 }
@ -188,12 +173,6 @@ void DisplayGL::resizePainter() {

 PainterGL::PainterGL(int majorVersion, QGLWidget* parent)
 	: m_gl(parent)
-	, m_active(false)
-	, m_started(false)
-	, m_context(nullptr)
-	, m_shader{}
-	, m_backend(nullptr)
-	, m_messagePainter(nullptr)
 {
 #ifdef BUILD_GL
 	mGLContext* glBackend;
@ -267,7 +246,7 @@ PainterGL::~PainterGL() {
 	m_backend = nullptr;
 }

-void PainterGL::setContext(mCoreThread* context) {
+void PainterGL::setContext(std::shared_ptr<CoreController> context) {
 	m_context = context;

 	if (!context) {
@ -278,9 +257,8 @@ void PainterGL::setContext(mCoreThread* context) {
 #if defined(_WIN32) && defined(USE_EPOXY)
 	epoxy_handle_external_wglMakeCurrent();
 #endif
-	unsigned width, height;
-	context->core->desiredVideoDimensions(context->core, &width, &height);
-	m_backend->setDimensions(m_backend, width, height);
+	QSize size = m_context->screenDimensions();
+	m_backend->setDimensions(m_backend, size.width(), size.height());
 	m_gl->doneCurrent();
 }

@ -334,13 +312,13 @@ void PainterGL::start() {
 }

 void PainterGL::draw() {
-	if (m_queue.isEmpty() || !mCoreThreadIsActive(m_context)) {
+	if (m_queue.isEmpty()) {
 		return;
 	}

-	if (mCoreSyncWaitFrameStart(&m_context->impl->sync) || !m_queue.isEmpty()) {
+	if (mCoreSyncWaitFrameStart(&m_context->thread()->impl->sync) || !m_queue.isEmpty()) {
 		dequeue();
-		mCoreSyncWaitFrameEnd(&m_context->impl->sync);
+		mCoreSyncWaitFrameEnd(&m_context->thread()->impl->sync);
 		m_painter.begin(m_gl->context()->device());
 		performDraw();
 		m_painter.end();
@ -354,7 +332,7 @@ void PainterGL::draw() {
 			m_delayTimer.restart();
 		}
 	} else {
-		mCoreSyncWaitFrameEnd(&m_context->impl->sync);
+		mCoreSyncWaitFrameEnd(&m_context->thread()->impl->sync);
 	}
 	if (!m_queue.isEmpty()) {
 		QMetaObject::invokeMethod(this, "draw", Qt::QueuedConnection);
@ -380,6 +358,7 @@ void PainterGL::stop() {
 	m_backend->swap(m_backend);
 	m_gl->doneCurrent();
 	m_gl->context()->moveToThread(m_gl->thread());
+	m_context.reset();
 	moveToThread(m_gl->thread());
 }

@ -414,9 +393,8 @@ void PainterGL::enqueue(const uint32_t* backing) {
 	} else {
 		buffer = m_free.takeLast();
 	}
-	unsigned width, height;
-	m_context->core->desiredVideoDimensions(m_context->core, &width, &height);
-	memcpy(buffer, backing, width * height * BYTES_PER_PIXEL);
+	QSize size = m_context->screenDimensions();
+	memcpy(buffer, backing, size.width() * size.height() * BYTES_PER_PIXEL);
 	m_queue.enqueue(buffer);
 	m_mutex.unlock();
 }
--- a/src/platform/qt/DisplayGL.h
+++ b/src/platform/qt/DisplayGL.h
@ -46,12 +46,12 @@ public:
 	DisplayGL(const QGLFormat& format, QWidget* parent = nullptr);
 	~DisplayGL();

+	void startDrawing(std::shared_ptr<CoreController>) override;
 	bool isDrawing() const override { return m_isDrawing; }
 	bool supportsShaders() const override;
 	VideoShader* shaders() override;

 public slots:
-	void startDrawing(mCoreThread* context) override;
 	void stopDrawing() override;
 	void pauseDrawing() override;
 	void unpauseDrawing() override;
@ -59,7 +59,7 @@ public slots:
 	void lockAspectRatio(bool lock) override;
 	void lockIntegerScaling(bool lock) override;
 	void filter(bool filter) override;
-	void framePosted(const uint32_t*) override;
+	void framePosted() override;
 	void setShaders(struct VDir*) override;
 	void clearShaders() override;

@ -74,7 +74,7 @@ private:
 	QGLWidget* m_gl;
 	PainterGL* m_painter;
 	QThread* m_drawThread = nullptr;
-	mCoreThread* m_context = nullptr;
+	std::shared_ptr<CoreController> m_context;
 };

 class PainterGL : public QObject {
@ -84,7 +84,7 @@ public:
 	PainterGL(int majorVersion, QGLWidget* parent);
 	~PainterGL();

-	void setContext(mCoreThread*);
+	void setContext(std::shared_ptr<CoreController>);
 	void setMessagePainter(MessagePainter*);
 	void enqueue(const uint32_t* backing);

@ -116,14 +116,14 @@ private:
 	QPainter m_painter;
 	QMutex m_mutex;
 	QGLWidget* m_gl;
-	bool m_active;
-	bool m_started;
-	mCoreThread* m_context;
+	bool m_active = false;
+	bool m_started = false;
+	std::shared_ptr<CoreController> m_context = nullptr;
 	bool m_supportsShaders;
-	VideoShader m_shader;
-	VideoBackend* m_backend;
+	VideoShader m_shader{};
+	VideoBackend* m_backend = nullptr;
 	QSize m_size;
-	MessagePainter* m_messagePainter;
+	MessagePainter* m_messagePainter = nullptr;
 	QElapsedTimer m_delayTimer;
 };

--- a/src/platform/qt/DisplayQt.cpp
+++ b/src/platform/qt/DisplayQt.cpp
@ -5,6 +5,8 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "DisplayQt.h"

+#include "CoreController.h"
+
 #include <QPainter>

 #include <mgba/core/core.h>
@ -17,11 +19,19 @@ DisplayQt::DisplayQt(QWidget* parent)
 {
 }

-void DisplayQt::startDrawing(mCoreThread* context) {
-	context->core->desiredVideoDimensions(context->core, &m_width, &m_height);
+void DisplayQt::startDrawing(std::shared_ptr<CoreController> controller) {
+	QSize size = controller->screenDimensions();
+	m_width = size.width();
+	m_height = size.height();
 	setSystemDimensions(m_width, m_height);
 	m_backing = std::move(QImage());
 	m_isDrawing = true;
+	m_context = controller;
+}
+
+void DisplayQt::stopDrawing() {
+	m_isDrawing = false;
+	m_context.reset();
 }

 void DisplayQt::lockAspectRatio(bool lock) {
@ -39,8 +49,9 @@ void DisplayQt::filter(bool filter) {
 	update();
 }

-void DisplayQt::framePosted(const uint32_t* buffer) {
+void DisplayQt::framePosted() {
 	update();
+	color_t* buffer = m_context->drawContext();
 	if (const_cast<const QImage&>(m_backing).bits() == reinterpret_cast<const uchar*>(buffer)) {
 		return;
 	}
--- a/src/platform/qt/DisplayQt.h
+++ b/src/platform/qt/DisplayQt.h
@ -19,20 +19,20 @@ Q_OBJECT
 public:
 	DisplayQt(QWidget* parent = nullptr);

+	void startDrawing(std::shared_ptr<CoreController>) override;
 	bool isDrawing() const override { return m_isDrawing; }
 	bool supportsShaders() const override { return false; }
 	VideoShader* shaders() override { return nullptr; }

 public slots:
-	void startDrawing(mCoreThread* context) override;
-	void stopDrawing() override { m_isDrawing = false; }
+	void stopDrawing() override;
 	void pauseDrawing() override { m_isDrawing = false; }
 	void unpauseDrawing() override { m_isDrawing = true; }
 	void forceDraw() override { update(); }
 	void lockAspectRatio(bool lock) override;
 	void lockIntegerScaling(bool lock) override;
 	void filter(bool filter) override;
-	void framePosted(const uint32_t*) override;
+	void framePosted() override;
 	void setShaders(struct VDir*) override {}
 	void clearShaders() override {}

@ -44,6 +44,7 @@ private:
 	unsigned m_width;
 	unsigned m_height;
 	QImage m_backing{nullptr};
+	std::shared_ptr<CoreController> m_context = nullptr;
 };

 }
--- a/src/platform/qt/GBAApp.cpp
+++ b/src/platform/qt/GBAApp.cpp
@ -6,9 +6,10 @@
 #include "GBAApp.h"

 #include "AudioProcessor.h"
+#include "CoreController.h"
+#include "CoreManager.h"
 #include "ConfigController.h"
 #include "Display.h"
-#include "GameController.h"
 #include "Window.h"
 #include "VFileDevice.h"

@ -57,6 +58,9 @@ GBAApp::GBAApp(int& argc, char* argv[], ConfigController* config)

 	reloadGameDB();

+	m_manager.setConfig(m_configController->config());
+	m_manager.setMultiplayerController(&m_multiplayer);
+
 	if (!m_configController->getQtOption("audioDriver").isNull()) {
 		AudioProcessor::setDriver(static_cast<AudioProcessor::Driver>(m_configController->getQtOption("audioDriver").toInt()));
 	}
@ -71,7 +75,8 @@ GBAApp::~GBAApp() {

 bool GBAApp::event(QEvent* event) {
 	if (event->type() == QEvent::FileOpen) {
-		m_windows[0]->controller()->loadGame(static_cast<QFileOpenEvent*>(event)->file());
+		CoreController* core = m_manager.loadGame(static_cast<QFileOpenEvent*>(event)->file());
+		m_windows[0]->setController(core, static_cast<QFileOpenEvent*>(event)->file());
 		return true;
 	}
 	return QApplication::event(event);
@ -81,7 +86,7 @@ Window* GBAApp::newWindow() {
 	if (m_windows.count() >= MAX_GBAS) {
 		return nullptr;
 	}
-	Window* w = new Window(m_configController, m_multiplayer.attached());
+	Window* w = new Window(&m_manager, m_configController, m_multiplayer.attached());
 	int windowId = m_multiplayer.attached();
 	connect(w, &Window::destroyed, [this, w]() {
 		m_windows.removeAll(w);
@ -93,7 +98,6 @@ Window* GBAApp::newWindow() {
 	w->setAttribute(Qt::WA_DeleteOnClose);
 	w->loadConfig();
 	w->show();
-	w->controller()->setMultiplayerController(&m_multiplayer);
 	w->multiplayerChanged();
 	for (Window* w : m_windows) {
 		w->updateMultiplayerStatus(m_windows.count() < MAX_GBAS);
@ -107,7 +111,7 @@ GBAApp* GBAApp::app() {

 void GBAApp::pauseAll(QList<Window*>* paused) {
 	for (auto& window : m_windows) {
-		if (!window->controller()->isLoaded() || window->controller()->isPaused()) {
+		if (!window->controller() || window->controller()->isPaused()) {
 			continue;
 		}
 		window->controller()->setPaused(true);
@ -117,7 +121,9 @@ void GBAApp::pauseAll(QList<Window*>* paused) {

 void GBAApp::continueAll(const QList<Window*>& paused) {
 	for (auto& window : paused) {
-		window->controller()->setPaused(false);
+		if (window->controller()) {
+			window->controller()->setPaused(false);
+		}
 	}
 }

--- a/src/platform/qt/GBAApp.h
+++ b/src/platform/qt/GBAApp.h
@ -8,8 +8,12 @@

 #include <QApplication>
 #include <QFileDialog>
+#include <QList>
+#include <QObject>
+#include <QString>
 #include <QThread>

+#include "CoreManager.h"
 #include "MultiplayerController.h"

 struct NoIntroDB;
@ -70,6 +74,7 @@ private:
 	ConfigController* m_configController;
 	QList<Window*> m_windows;
 	MultiplayerController m_multiplayer;
+	CoreManager m_manager;

 	NoIntroDB* m_db = nullptr;
 #ifdef USE_SQLITE3
--- a/src/platform/qt/GDBController.cpp
+++ b/src/platform/qt/GDBController.cpp
@ -5,12 +5,12 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "GDBController.h"

-#include "GameController.h"
+#include "CoreController.h"

 using namespace QGBA;

-GDBController::GDBController(GameController* controller, QObject* parent)
-	: DebuggerController(controller, &m_gdbStub.d, parent)
+GDBController::GDBController(QObject* parent)
+	: DebuggerController(&m_gdbStub.d, parent)
 	, m_bindAddress({ IPV4, 0 })
 {
 	GDBStubCreate(&m_gdbStub);
@ -21,7 +21,7 @@ ushort GDBController::port() {
 }

 bool GDBController::isAttached() {
-	return m_gameController->debugger() == &m_gdbStub.d;
+	return m_gameController && m_gameController->debugger() == &m_gdbStub.d;
 }

 void GDBController::setPort(ushort port) {
@ -34,7 +34,7 @@ void GDBController::setBindAddress(uint32_t bindAddress) {
 }

 void GDBController::listen() {
-	GameController::Interrupter interrupter(m_gameController);
+	CoreController::Interrupter interrupter(m_gameController);
 	if (!isAttached()) {
 		attach();
 	}
--- a/src/platform/qt/GDBController.h
+++ b/src/platform/qt/GDBController.h
@ -14,13 +14,13 @@

 namespace QGBA {

-class GameController;
+class CoreController;

 class GDBController : public DebuggerController {
 Q_OBJECT

 public:
-	GDBController(GameController* controller, QObject* parent = nullptr);
+	GDBController(QObject* parent = nullptr);

 public:
 	ushort port();
@ -38,7 +38,7 @@ signals:
 private:
 	virtual void shutdownInternal() override;

-	GDBStub m_gdbStub;
+	GDBStub m_gdbStub{};

 	ushort m_port = 2345;
 	Address m_bindAddress;
--- a/src/platform/qt/GIFView.cpp
+++ b/src/platform/qt/GIFView.cpp
@ -7,6 +7,7 @@

 #ifdef USE_MAGICK

+#include "CoreController.h"
 #include "GBAApp.h"
 #include "LogController.h"

@ -39,6 +40,12 @@ GIFView::~GIFView() {
 	stopRecording();
 }

+void GIFView::setController(std::shared_ptr<CoreController> controller) {
+	connect(controller.get(), &CoreController::stopping, this, &GIFView::stopRecording);
+	connect(this, &GIFView::recordingStarted, controller.get(), &CoreController::setAVStream);
+	connect(this, &GIFView::recordingStopped, controller.get(), &CoreController::clearAVStream, Qt::DirectConnection);
+}
+
 void GIFView::startRecording() {
 	int delayMs = m_ui.delayAuto->isChecked() ? -1 : m_ui.delayMs->value();
 	ImageMagickGIFEncoderSetParams(&m_encoder, m_ui.frameskip->value(), delayMs);
--- a/src/platform/qt/GIFView.h
+++ b/src/platform/qt/GIFView.h
@ -10,12 +10,16 @@

 #include <QWidget>

+#include <memory>
+
 #include "ui_GIFView.h"

 #include "feature/imagemagick/imagemagick-gif-encoder.h"

 namespace QGBA {

+class CoreController;
+
 class GIFView : public QWidget {
 Q_OBJECT

@ -26,6 +30,8 @@ public:
 	mAVStream* getStream() { return &m_encoder.d; }

 public slots:
+	void setController(std::shared_ptr<CoreController>);
+
 	void startRecording();
 	void stopRecording();

--- a/src/platform/qt/IOViewer.cpp
+++ b/src/platform/qt/IOViewer.cpp
@ -5,7 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "IOViewer.h"

-#include "GameController.h"
+#include "CoreController.h"

 #include <QComboBox>
 #include <QFontDatabase>
@ -1023,7 +1023,7 @@ const QList<IOViewer::RegisterDescription>& IOViewer::registerDescriptions() {
 	return s_registers;
 }

-IOViewer::IOViewer(GameController* controller, QWidget* parent)
+IOViewer::IOViewer(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: QDialog(parent)
 	, m_controller(controller)
 {
@ -1067,16 +1067,17 @@ IOViewer::IOViewer(GameController* controller, QWidget* parent)
 	}

 	selectRegister(0);
+
+	connect(controller.get(), &CoreController::stopping, this, &QWidget::close);
 }

 void IOViewer::updateRegister() {
 	m_value = 0;
 	uint16_t value = 0;
-	m_controller->threadInterrupt();
-	if (m_controller->isLoaded()) {
+	{
+		CoreController::Interrupter interrupter(m_controller);
 		value = GBAView16(static_cast<ARMCore*>(m_controller->thread()->core->cpu), BASE_IO | m_register);
 	}
-	m_controller->threadContinue();

 	for (int i = 0; i < 16; ++i) {
 		m_b[i]->setChecked(value & (1 << i) ? Qt::Checked : Qt::Unchecked);
@ -1095,11 +1096,10 @@ void IOViewer::bitFlipped() {
 }

 void IOViewer::writeback() {
-	m_controller->threadInterrupt();
-	if (m_controller->isLoaded()) {
+	{
+		CoreController::Interrupter interrupter(m_controller);
 		GBAIOWrite(static_cast<GBA*>(m_controller->thread()->core->board), m_register, m_value);
 	}
-	m_controller->threadContinue();
 	updateRegister();
 }

--- a/src/platform/qt/IOViewer.h
+++ b/src/platform/qt/IOViewer.h
@ -9,11 +9,13 @@
 #include <QDialog>
 #include <QList>

+#include <memory>
+
 #include "ui_IOViewer.h"

 namespace QGBA {

-class GameController;
+class CoreController;

 class IOViewer : public QDialog {
 Q_OBJECT
@ -39,7 +41,7 @@ public:
 	};
 	typedef QList<RegisterItem> RegisterDescription;

-	IOViewer(GameController* controller, QWidget* parent = nullptr);
+	IOViewer(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);

 	static const QList<RegisterDescription>& registerDescriptions();

@ -65,7 +67,7 @@ private:

 	QCheckBox* m_b[16];

-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
 };

 }
--- a/src/platform/qt/LoadSaveState.cpp
+++ b/src/platform/qt/LoadSaveState.cpp
@ -5,7 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "LoadSaveState.h"

-#include "GameController.h"
+#include "CoreController.h"
 #include "GamepadAxisEvent.h"
 #include "GamepadButtonEvent.h"
 #include "VFileDevice.h"
@ -20,7 +20,7 @@

 using namespace QGBA;

-LoadSaveState::LoadSaveState(GameController* controller, QWidget* parent)
+LoadSaveState::LoadSaveState(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: QWidget(parent)
 	, m_controller(controller)
 	, m_mode(LoadSave::LOAD)
@ -61,6 +61,8 @@ LoadSaveState::LoadSaveState(GameController* controller, QWidget* parent)
 	escape->setShortcut(QKeySequence("Esc"));
 	escape->setShortcutContext(Qt::WidgetWithChildrenShortcut);
 	addAction(escape);
+
+	connect(m_controller.get(), &CoreController::stopping, this, &QWidget::close);
 }

 void LoadSaveState::setMode(LoadSave mode) {
--- a/src/platform/qt/LoadSaveState.h
+++ b/src/platform/qt/LoadSaveState.h
@ -8,11 +8,13 @@

 #include <QWidget>

+#include <memory>
+
 #include "ui_LoadSaveState.h"

 namespace QGBA {

-class GameController;
+class CoreController;
 class InputController;
 class SavestateButton;

@ -27,7 +29,7 @@ Q_OBJECT
 public:
 	const static int NUM_SLOTS = 9;

-	LoadSaveState(GameController* controller, QWidget* parent = nullptr);
+	LoadSaveState(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);

 	void setInputController(InputController* controller);
 	void setMode(LoadSave mode);
@ -46,7 +48,7 @@ private:
 	void triggerState(int slot);

 	Ui::LoadSaveState m_ui;
-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
 	SavestateButton* m_slots[NUM_SLOTS];
 	LoadSave m_mode;

--- a/src/platform/qt/LogController.cpp
+++ b/src/platform/qt/LogController.cpp
@ -11,8 +11,11 @@ LogController LogController::s_global(mLOG_ALL);

 LogController::LogController(int levels, QObject* parent)
 	: QObject(parent)
-	, m_logLevel(levels)
 {
+	mLogFilterInit(&m_filter);
+	mLogFilterSet(&m_filter, "gba.bios", mLOG_STUB);
+	m_filter.defaultLevels = levels;
+
 	if (this != &s_global) {
 		connect(&s_global, &LogController::logPosted, this, &LogController::postLog);
 		connect(this, &LogController::levelsSet, &s_global, &LogController::setLevels);
@ -26,24 +29,24 @@ LogController::Stream LogController::operator()(int category, int level) {
 }

 void LogController::postLog(int level, int category, const QString& string) {
-	if (!(m_logLevel & level)) {
+	if (!mLogFilterTest(&m_filter, category, static_cast<mLogLevel>(level))) {
 		return;
 	}
 	emit logPosted(level, category, string);
 }

 void LogController::setLevels(int levels) {
-	m_logLevel = levels;
+	m_filter.defaultLevels = levels;
 	emit levelsSet(levels);
 }

 void LogController::enableLevels(int levels) {
-	m_logLevel |= levels;
+	m_filter.defaultLevels |= levels;
 	emit levelsEnabled(levels);
 }

 void LogController::disableLevels(int levels) {
-	m_logLevel &= ~levels;
+	m_filter.defaultLevels &= ~levels;
 	emit levelsDisabled(levels);
 }

--- a/src/platform/qt/LogController.h
+++ b/src/platform/qt/LogController.h
@ -8,6 +8,8 @@

 #include "GBAApp.h"

+#include <mgba/core/log.h>
+
 #include <QObject>
 #include <QStringList>

@ -35,7 +37,8 @@ private:
 public:
 	LogController(int levels, QObject* parent = nullptr);

-	int levels() const { return m_logLevel; }
+	int levels() const { return m_filter.defaultLevels; }
+	mLogFilter* filter() { return &m_filter; }

 	Stream operator()(int category, int level);

@ -55,7 +58,7 @@ public slots:
 	void disableLevels(int levels);

 private:
-	int m_logLevel;
+	mLogFilter m_filter;

 	static LogController s_global;
 };
--- a/src/platform/qt/MemoryModel.cpp
+++ b/src/platform/qt/MemoryModel.cpp
@ -6,7 +6,7 @@
 #include "MemoryModel.h"

 #include "GBAApp.h"
-#include "GameController.h"
+#include "CoreController.h"
 #include "LogController.h"
 #include "VFileDevice.h"

@ -91,7 +91,7 @@ MemoryModel::MemoryModel(QWidget* parent)
 	setRegion(0, 0x10000000, tr("All"));
 }

-void MemoryModel::setController(GameController* controller) {
+void MemoryModel::setController(std::shared_ptr<CoreController> controller) {
 	m_core = controller->thread()->core;
 }

--- a/src/platform/qt/MemoryModel.h
+++ b/src/platform/qt/MemoryModel.h
@ -11,6 +11,7 @@
 #include <QSize>
 #include <QStaticText>
 #include <QVector>
+
 #include <memory>

 #include <mgba-util/text-codec.h>
@ -19,7 +20,7 @@ struct mCore;

 namespace QGBA {

-class GameController;
+class CoreController;

 class MemoryModel : public QAbstractScrollArea {
 Q_OBJECT
@ -27,7 +28,7 @@ Q_OBJECT
 public:
 	MemoryModel(QWidget* parent = nullptr);

-	void setController(GameController* controller);
+	void setController(std::shared_ptr<CoreController> controller);

 	void setRegion(uint32_t base, uint32_t size, const QString& name = QString(), int segment = -1);
 	void setSegment(int segment);
--- a/src/platform/qt/MemorySearch.cpp
+++ b/src/platform/qt/MemorySearch.cpp
@ -8,12 +8,12 @@

 #include <mgba/core/core.h>

-#include "GameController.h"
+#include "CoreController.h"
 #include "MemoryView.h"

 using namespace QGBA;

-MemorySearch::MemorySearch(GameController* controller, QWidget* parent)
+MemorySearch::MemorySearch(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: QWidget(parent)
 	, m_controller(controller)
 {
@ -26,6 +26,8 @@ MemorySearch::MemorySearch(GameController* controller, QWidget* parent)
 	connect(m_ui.numHex, &QPushButton::clicked, this, &MemorySearch::refresh);
 	connect(m_ui.numDec, &QPushButton::clicked, this, &MemorySearch::refresh);
 	connect(m_ui.viewMem, &QPushButton::clicked, this, &MemorySearch::openMemory);
+
+	connect(controller.get(), &CoreController::stopping, this, &QWidget::close);
 }

 MemorySearch::~MemorySearch() {
@ -109,10 +111,7 @@ void MemorySearch::search() {

 	mCoreMemorySearchParams params;

-	GameController::Interrupter interrupter(m_controller);
-	if (!m_controller->isLoaded()) {
-		return;
-	}
+	CoreController::Interrupter interrupter(m_controller);
 	mCore* core = m_controller->thread()->core;

 	if (createParams(&params)) {
@ -125,10 +124,7 @@ void MemorySearch::search() {
 void MemorySearch::searchWithin() {
 	mCoreMemorySearchParams params;

-	GameController::Interrupter interrupter(m_controller);
-	if (!m_controller->isLoaded()) {
-		return;
-	}
+	CoreController::Interrupter interrupter(m_controller);
 	mCore* core = m_controller->thread()->core;

 	if (createParams(&params)) {
@ -139,10 +135,7 @@ void MemorySearch::searchWithin() {
 }

 void MemorySearch::refresh() {
-	GameController::Interrupter interrupter(m_controller);
-	if (!m_controller->isLoaded()) {
-		return;
-	}
+	CoreController::Interrupter interrupter(m_controller);
 	mCore* core = m_controller->thread()->core;

 	m_ui.results->clearContents();
@ -220,7 +213,6 @@ void MemorySearch::openMemory() {
 	MemoryView* memView = new MemoryView(m_controller);
 	memView->jumpToAddress(address);

-	connect(m_controller, &GameController::gameStopped, memView, &QWidget::close);
 	memView->setAttribute(Qt::WA_DeleteOnClose);
 	memView->show();
 }
--- a/src/platform/qt/MemorySearch.h
+++ b/src/platform/qt/MemorySearch.h
@ -6,13 +6,15 @@
 #ifndef QGBA_MEMORY_SEARCH
 #define QGBA_MEMORY_SEARCH

+#include <memory>
+
 #include "ui_MemorySearch.h"

 #include <mgba/core/mem-search.h>

 namespace QGBA {

-class GameController;
+class CoreController;

 class MemorySearch : public QWidget {
 Q_OBJECT
@ -20,7 +22,7 @@ Q_OBJECT
 public:
 	static constexpr size_t LIMIT = 10000;

-	MemorySearch(GameController* controller, QWidget* parent = nullptr);
+	MemorySearch(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);
 	~MemorySearch();

 public slots:
@ -36,7 +38,7 @@ private:

 	Ui::MemorySearch m_ui;

-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;

 	mCoreMemorySearchResults m_results;
 	QByteArray m_string;
--- a/src/platform/qt/MemoryView.cpp
+++ b/src/platform/qt/MemoryView.cpp
@ -6,13 +6,13 @@

 #include "MemoryView.h"

-#include "GameController.h"
+#include "CoreController.h"

 #include <mgba/core/core.h>

 using namespace QGBA;

-MemoryView::MemoryView(GameController* controller, QWidget* parent)
+MemoryView::MemoryView(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: QWidget(parent)
 	, m_controller(controller)
 {
@ -45,12 +45,12 @@ MemoryView::MemoryView(GameController* controller, QWidget* parent)
 	        m_ui.hexfield, static_cast<void (MemoryModel::*)(uint32_t)>(&MemoryModel::jumpToAddress));
 	connect(m_ui.hexfield, &MemoryModel::selectionChanged, this, &MemoryView::updateSelection);

-	connect(controller, &GameController::gameStopped, this, &QWidget::close);
+	connect(controller.get(), &CoreController::stopping, this, &QWidget::close);

-	connect(controller, &GameController::frameAvailable, this, &MemoryView::update);
-	connect(controller, &GameController::gamePaused, this, &MemoryView::update);
-	connect(controller, &GameController::stateLoaded, this, &MemoryView::update);
-	connect(controller, &GameController::rewound, this, &MemoryView::update);
+	connect(controller.get(), &CoreController::frameAvailable, this, &MemoryView::update);
+	connect(controller.get(), &CoreController::paused, this, &MemoryView::update);
+	connect(controller.get(), &CoreController::stateLoaded, this, &MemoryView::update);
+	connect(controller.get(), &CoreController::rewound, this, &MemoryView::update);

 	connect(m_ui.copy, &QAbstractButton::clicked, m_ui.hexfield, &MemoryModel::copy);
 	connect(m_ui.save, &QAbstractButton::clicked, m_ui.hexfield, &MemoryModel::save);
@ -94,9 +94,6 @@ void MemoryView::updateSelection(uint32_t start, uint32_t end) {

 void MemoryView::updateStatus() {
 	int align = m_ui.hexfield->alignment();
-	if (!m_controller->isLoaded()) {
-		return;
-	}
 	mCore* core = m_controller->thread()->core;
 	QByteArray selection(m_ui.hexfield->serialize());
 	QString text(m_ui.hexfield->decodeText(selection));
--- a/src/platform/qt/MemoryView.h
+++ b/src/platform/qt/MemoryView.h
@ -12,13 +12,13 @@

 namespace QGBA {

-class GameController;
+class CoreController;

 class MemoryView : public QWidget {
 Q_OBJECT

 public:
-	MemoryView(GameController* controller, QWidget* parent = nullptr);
+	MemoryView(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);

 public slots:
 	void update();
@ -33,7 +33,7 @@ private slots:
 private:
 	Ui::MemoryView m_ui;

-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
 	QPair<uint32_t, uint32_t> m_selection;
 };

--- a/src/platform/qt/MultiplayerController.cpp
+++ b/src/platform/qt/MultiplayerController.cpp
@ -5,7 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "MultiplayerController.h"

-#include "GameController.h"
+#include "CoreController.h"

 #ifdef M_CORE_GBA
 #include <mgba/internal/gba/gba.h>
@ -153,7 +153,7 @@ MultiplayerController::MultiplayerController() {
 	};
 }

-bool MultiplayerController::attachGame(GameController* controller) {
+bool MultiplayerController::attachGame(CoreController* controller) {
 	if (m_lockstep.attached == MAX_GBAS) {
 		return false;
 	}
@ -232,13 +232,15 @@ bool MultiplayerController::attachGame(GameController* controller) {
 	return false;
 }

-void MultiplayerController::detachGame(GameController* controller) {
+void MultiplayerController::detachGame(CoreController* controller) {
 	mCoreThread* thread = controller->thread();
 	if (!thread) {
 		return;
 	}
+	QList<CoreController::Interrupter> interrupters;
+
 	for (int i = 0; i < m_players.count(); ++i) {
-		m_players[i].controller->threadInterrupt();
+		interrupters.append(m_players[i].controller);
 	}
 	switch (controller->platform()) {
 #ifdef M_CORE_GBA
@ -269,20 +271,16 @@ void MultiplayerController::detachGame(GameController* controller) {
 		break;
 	}

-	controller->threadContinue();
 	for (int i = 0; i < m_players.count(); ++i) {
 		if (m_players[i].controller == controller) {
 			m_players.removeAt(i);
 			break;
 		}
 	}
-	for (int i = 0; i < m_players.count(); ++i) {
-		m_players[i].controller->threadContinue();
-	}
 	emit gameDetached();
 }

-int MultiplayerController::playerId(GameController* controller) {
+int MultiplayerController::playerId(CoreController* controller) {
 	for (int i = 0; i < m_players.count(); ++i) {
 		if (m_players[i].controller == controller) {
 			return i;
--- a/src/platform/qt/MultiplayerController.h
+++ b/src/platform/qt/MultiplayerController.h
@ -23,7 +23,7 @@ struct GBASIOLockstepNode;

 namespace QGBA {

-class GameController;
+class CoreController;

 class MultiplayerController : public QObject {
 Q_OBJECT
@ -31,11 +31,11 @@ Q_OBJECT
 public:
 	MultiplayerController();

-	bool attachGame(GameController*);
-	void detachGame(GameController*);
+	bool attachGame(CoreController*);
+	void detachGame(CoreController*);

 	int attached();
-	int playerId(GameController*);
+	int playerId(CoreController*);

 signals:
 	void gameAttached();
@ -43,7 +43,7 @@ signals:

 private:
 	struct Player {
-		GameController* controller;
+		CoreController* controller;
 		GBSIOLockstepNode* gbNode;
 		GBASIOLockstepNode* gbaNode;
 		int awake;
--- a/src/platform/qt/ObjView.cpp
+++ b/src/platform/qt/ObjView.cpp
@ -5,6 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "ObjView.h"

+#include "CoreController.h"
 #include "GBAApp.h"

 #include <QFontDatabase>
@ -24,7 +25,7 @@

 using namespace QGBA;

-ObjView::ObjView(GameController* controller, QWidget* parent)
+ObjView::ObjView(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: AssetView(controller, parent)
 	, m_controller(controller)
 {
@ -119,16 +120,16 @@ void ObjView::updateTilesGBA(bool force) {
 	};
 	m_objInfo = newInfo;
 	m_tileOffset = tile;
-	mTileCacheSetPalette(m_tileCache.get(), paletteSet);
+	mTileCacheSetPalette(m_tileCache, paletteSet);

 	int i = 0;
 	for (int y = 0; y < height / 8; ++y) {
 		for (int x = 0; x < width / 8; ++x, ++i, ++tile, ++tileBase) {
-			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache.get(), &m_tileStatus[32 * tileBase], tile, palette);
+			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache, &m_tileStatus[32 * tileBase], tile, palette);
 			if (data) {
 				m_ui.tiles->setTile(i, data);
 			} else if (force) {
-				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache.get(), tile, palette));
+				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache, tile, palette));
 			}
 		}
 		tile += newInfo.stride - width / 8;
@ -215,16 +216,16 @@ void ObjView::updateTilesGB(bool force) {
 	m_tileOffset = tile;

 	int i = 0;
-	mTileCacheSetPalette(m_tileCache.get(), 0);
+	mTileCacheSetPalette(m_tileCache, 0);
 	m_ui.tile->setPalette(palette);
 	m_ui.tile->setPaletteSet(0, 512, 1024);
 	for (int y = 0; y < height / 8; ++y, ++i) {
 		unsigned t = tile + i;
-		const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache.get(), &m_tileStatus[16 * t], t, palette);
+		const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache, &m_tileStatus[16 * t], t, palette);
 		if (data) {
 			m_ui.tiles->setTile(i, data);
 		} else if (force) {
-			m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache.get(), t, palette));
+			m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache, t, palette));
 		}
 	}

@ -247,7 +248,7 @@ void ObjView::updateTilesGB(bool force) {

 #ifdef USE_PNG
 void ObjView::exportObj() {
-	GameController::Interrupter interrupter(m_controller);
+	CoreController::Interrupter interrupter(m_controller);
 	QString filename = GBAApp::app()->getSaveFileName(this, tr("Export sprite"),
 	                                                  tr("Portable Network Graphics (*.png)"));
 	VFile* vf = VFileDevice::open(filename, O_WRONLY | O_CREAT | O_TRUNC);
@ -256,11 +257,11 @@ void ObjView::exportObj() {
 		return;
 	}

-	mTileCacheSetPalette(m_tileCache.get(), m_objInfo.paletteSet);
+	mTileCacheSetPalette(m_tileCache, m_objInfo.paletteSet);
 	png_structp png = PNGWriteOpen(vf);
 	png_infop info = PNGWriteHeader8(png, m_objInfo.width * 8, m_objInfo.height * 8);

-	const uint16_t* rawPalette = mTileCacheGetPalette(m_tileCache.get(), m_objInfo.paletteId);
+	const uint16_t* rawPalette = mTileCacheGetPalette(m_tileCache, m_objInfo.paletteId);
 	unsigned colors = 1 << m_objInfo.bits;
 	uint32_t palette[256];
 	for (unsigned c = 0; c < colors && c < 256; ++c) {
--- a/src/platform/qt/ObjView.h
+++ b/src/platform/qt/ObjView.h
@ -7,7 +7,6 @@
 #define QGBA_OBJ_VIEW

 #include "AssetView.h"
-#include "GameController.h"

 #include "ui_ObjView.h"

@ -15,11 +14,13 @@

 namespace QGBA {

+class CoreController;
+
 class ObjView : public AssetView {
 Q_OBJECT

 public:
-	ObjView(GameController* controller, QWidget* parent = nullptr);
+	ObjView(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);

 #ifdef USE_PNG
 public slots:
@ -40,7 +41,7 @@ private:

 	Ui::ObjView m_ui;

-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
 	mTileCacheEntry m_tileStatus[1024 * 32] = {}; // TODO: Correct size
 	int m_objId = 0;
 	struct ObjInfo {
--- a/src/platform/qt/OverrideView.cpp
+++ b/src/platform/qt/OverrideView.cpp
@ -9,7 +9,7 @@
 #include <QPushButton>

 #include "ConfigController.h"
-#include "GameController.h"
+#include "CoreController.h"

 #ifdef M_CORE_GBA
 #include "GBAOverride.h"
@ -28,9 +28,8 @@ QList<enum GBModel> OverrideView::s_gbModelList;
 QList<enum GBMemoryBankControllerType> OverrideView::s_mbcList;
 #endif

-OverrideView::OverrideView(GameController* controller, ConfigController* config, QWidget* parent)
+OverrideView::OverrideView(ConfigController* config, QWidget* parent)
 	: QDialog(parent, Qt::WindowTitleHint | Qt::WindowSystemMenuHint | Qt::WindowCloseButtonHint)
-	, m_controller(controller)
 	, m_config(config)
 {
 #ifdef M_CORE_GB
@ -57,9 +56,6 @@ OverrideView::OverrideView(GameController* controller, ConfigController* config,
 #endif
 	m_ui.setupUi(this);

-	connect(controller, &GameController::gameStarted, this, &OverrideView::gameStarted);
-	connect(controller, &GameController::gameStopped, this, &OverrideView::gameStopped);
-
 	connect(m_ui.hwAutodetect, &QAbstractButton::toggled, [this] (bool enabled) {
 		m_ui.hwRTC->setEnabled(!enabled);
 		m_ui.hwGyro->setEnabled(!enabled);
@ -106,9 +102,16 @@ OverrideView::OverrideView(GameController* controller, ConfigController* config,
 	connect(m_ui.buttonBox, &QDialogButtonBox::accepted, this, &OverrideView::saveOverride);
 	connect(m_ui.buttonBox, &QDialogButtonBox::rejected, this, &QWidget::close);
 	m_ui.buttonBox->button(QDialogButtonBox::Save)->setEnabled(false);
+}

-	if (controller->isLoaded()) {
-		gameStarted(controller->thread());
+void OverrideView::setController(std::shared_ptr<CoreController> controller) {
+	m_controller = controller;
+	gameStarted();
+	connect(controller.get(), &CoreController::stopping, this, &OverrideView::gameStopped);
+	if (m_override) {
+		m_controller->setOverride(std::move(m_override));
+	} else {
+		m_controller->clearOverride();
 	}
 }

@ -149,7 +152,7 @@ bool OverrideView::eventFilter(QObject* obj, QEvent* event) {
 }

 void OverrideView::saveOverride() {
-	if (!m_config) {
+	if (!m_config || !m_controller) {
 		return;
 	}
 	m_config->saveOverride(*m_controller->override());
@ -158,7 +161,7 @@ void OverrideView::saveOverride() {
 void OverrideView::updateOverrides() {
 #ifdef M_CORE_GBA
 	if (m_ui.tabWidget->currentWidget() == m_ui.tabGBA) {
-		GBAOverride* gba = new GBAOverride;
+		std::unique_ptr<GBAOverride> gba(new GBAOverride);
 		memset(gba->override.id, 0, 4);
 		gba->override.savetype = static_cast<SavedataType>(m_ui.savetype->currentIndex() - 1);
 		gba->override.hardware = HW_NO_OVERRIDE;
@ -193,18 +196,18 @@ void OverrideView::updateOverrides() {
 			gba->override.idleLoop = parsedIdleLoop;
 		}

+
 		if (gba->override.savetype != SAVEDATA_AUTODETECT || gba->override.hardware != HW_NO_OVERRIDE ||
 		    gba->override.idleLoop != IDLE_LOOP_NONE) {
-			m_controller->setOverride(gba);
+			m_override = std::move(gba);
 		} else {
-			m_controller->clearOverride();
-			delete gba;
+			m_override.reset();
 		}
 	}
 #endif
 #ifdef M_CORE_GB
 	if (m_ui.tabWidget->currentWidget() == m_ui.tabGB) {
-		GBOverride* gb = new GBOverride;
+		std::unique_ptr<GBOverride> gb(new GBOverride);
 		gb->override.mbc = s_mbcList[m_ui.mbc->currentIndex()];
 		gb->override.model = s_gbModelList[m_ui.gbModel->currentIndex()];
 		gb->override.gbColors[0] = m_gbColors[0];
@ -214,20 +217,17 @@ void OverrideView::updateOverrides() {
 		bool hasOverride = gb->override.mbc != GB_MBC_AUTODETECT || gb->override.model != GB_MODEL_AUTODETECT;
 		hasOverride = hasOverride || (m_gbColors[0] | m_gbColors[1] | m_gbColors[2] | m_gbColors[3]);
 		if (hasOverride) {
-			m_controller->setOverride(gb);
+			m_override = std::move(gb);
 		} else {
-			m_controller->clearOverride();
-			delete gb;
+			m_override.reset();
 		}
 	}
 #endif
 }

-void OverrideView::gameStarted(mCoreThread* thread) {
-	if (!thread->core) {
-		gameStopped();
-		return;
-	}
+void OverrideView::gameStarted() {
+	CoreController::Interrupter interrupter(m_controller);
+	mCoreThread* thread = m_controller->thread();

 	m_ui.tabWidget->setEnabled(false);
 	m_ui.buttonBox->button(QDialogButtonBox::Save)->setEnabled(true);
@ -278,6 +278,7 @@ void OverrideView::gameStarted(mCoreThread* thread) {
 }

 void OverrideView::gameStopped() {
+	m_controller.reset();
 	m_ui.tabWidget->setEnabled(true);
 	m_ui.savetype->setCurrentIndex(0);
 	m_ui.idleLoop->clear();
--- a/src/platform/qt/OverrideView.h
+++ b/src/platform/qt/OverrideView.h
@ -8,10 +8,14 @@

 #include <QDialog>

+#include <memory>
+
 #ifdef M_CORE_GB
 #include <mgba/gb/interface.h>
 #endif

+#include "Override.h"
+
 #include "ui_OverrideView.h"

 struct mCoreThread;
@ -19,21 +23,23 @@ struct mCoreThread;
 namespace QGBA {

 class ConfigController;
-class GameController;
+class CoreController;
 class Override;

 class OverrideView : public QDialog {
 Q_OBJECT

 public:
-	OverrideView(GameController* controller, ConfigController* config, QWidget* parent = nullptr);
+	OverrideView(ConfigController* config, QWidget* parent = nullptr);
+
+	void setController(std::shared_ptr<CoreController> controller);

 public slots:
 	void saveOverride();

 private slots:
 	void updateOverrides();
-	void gameStarted(mCoreThread*);
+	void gameStarted();
 	void gameStopped();

 protected:
@ -42,7 +48,8 @@ protected:
 private:
 	Ui::OverrideView m_ui;

-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
+	std::unique_ptr<Override> m_override;
 	ConfigController* m_config;

 #ifdef M_CORE_GB
--- a/src/platform/qt/PaletteView.cpp
+++ b/src/platform/qt/PaletteView.cpp
@ -5,6 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "PaletteView.h"

+#include "CoreController.h"
 #include "GBAApp.h"
 #include "LogController.h"
 #include "VFileDevice.h"
@ -24,13 +25,13 @@

 using namespace QGBA;

-PaletteView::PaletteView(GameController* controller, QWidget* parent)
+PaletteView::PaletteView(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: QWidget(parent)
 	, m_controller(controller)
 {
 	m_ui.setupUi(this);

-	connect(m_controller, &GameController::frameAvailable, this, &PaletteView::updatePalette);
+	connect(controller.get(), &CoreController::frameAvailable, this, &PaletteView::updatePalette);
 	m_ui.bgGrid->setDimensions(QSize(16, 16));
 	m_ui.objGrid->setDimensions(QSize(16, 16));
 	int count = 256;
@ -61,7 +62,7 @@ PaletteView::PaletteView(GameController* controller, QWidget* parent)
 	connect(m_ui.exportBG, &QAbstractButton::clicked, [this, count] () { exportPalette(0, count); });
 	connect(m_ui.exportOBJ, &QAbstractButton::clicked, [this, count] () { exportPalette(count, count); });

-	connect(controller, &GameController::gameStopped, this, &QWidget::close);
+	connect(controller.get(), &CoreController::stopping, this, &QWidget::close);
 }

 void PaletteView::updatePalette() {
@ -133,7 +134,7 @@ void PaletteView::exportPalette(int start, int length) {
 		length = 512 - start;
 	}

-	GameController::Interrupter interrupter(m_controller);
+	CoreController::Interrupter interrupter(m_controller);
 	QString filename = GBAApp::app()->getSaveFileName(this, tr("Export palette"),
 	                                                  tr("Windows PAL (*.pal);;Adobe Color Table (*.act)"));
 	VFile* vf = VFileDevice::open(filename, O_WRONLY | O_CREAT | O_TRUNC);
--- a/src/platform/qt/PaletteView.h
+++ b/src/platform/qt/PaletteView.h
@ -8,20 +8,22 @@

 #include <QWidget>

-#include "GameController.h"
+#include <memory>
+
 #include "Swatch.h"

 #include "ui_PaletteView.h"

 namespace QGBA {

+class CoreController;
 class Swatch;

 class PaletteView : public QWidget {
 Q_OBJECT

 public:
-	PaletteView(GameController* controller, QWidget* parent = nullptr);
+	PaletteView(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);

 public slots:
 	void updatePalette();
@ -34,7 +36,7 @@ private:

 	Ui::PaletteView m_ui;

-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
 };

 }
--- a/src/platform/qt/ROMInfo.cpp
+++ b/src/platform/qt/ROMInfo.cpp
@ -6,7 +6,7 @@
 #include "ROMInfo.h"

 #include "GBAApp.h"
-#include "GameController.h"
+#include "CoreController.h"

 #include <mgba/core/core.h>
 #ifdef M_CORE_GB
@ -21,21 +21,17 @@

 using namespace QGBA;

-ROMInfo::ROMInfo(GameController* controller, QWidget* parent)
+ROMInfo::ROMInfo(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: QDialog(parent, Qt::WindowTitleHint | Qt::WindowSystemMenuHint | Qt::WindowCloseButtonHint)
 {
 	m_ui.setupUi(this);

-	if (!controller->isLoaded()) {
-		return;
-	}
-
 #ifdef USE_SQLITE3
 	const NoIntroDB* db = GBAApp::app()->gameDB();
 #endif
 	uint32_t crc32 = 0;

-	GameController::Interrupter interrupter(controller);
+	CoreController::Interrupter interrupter(controller);
 	mCore* core = controller->thread()->core;
 	char title[17] = {};
 	core->getGameTitle(core, title);
--- a/src/platform/qt/ROMInfo.h
+++ b/src/platform/qt/ROMInfo.h
@ -8,17 +8,19 @@

 #include <QWidget>

+#include <memory>
+
 #include "ui_ROMInfo.h"

 namespace QGBA {

-class GameController;
+class CoreController;

 class ROMInfo : public QDialog {
 Q_OBJECT

 public:
-	ROMInfo(GameController* controller, QWidget* parent = nullptr);
+	ROMInfo(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);

 private:
 	Ui::ROMInfo m_ui;
--- a/src/platform/qt/SensorView.cpp
+++ b/src/platform/qt/SensorView.cpp
@ -5,7 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "SensorView.h"

-#include "GameController.h"
+#include "CoreController.h"
 #include "GamepadAxisEvent.h"
 #include "InputController.h"

@ -14,9 +14,8 @@

 using namespace QGBA;

-SensorView::SensorView(GameController* controller, InputController* input, QWidget* parent)
+SensorView::SensorView(InputController* input, QWidget* parent)
 	: QDialog(parent, Qt::WindowTitleHint | Qt::WindowSystemMenuHint | Qt::WindowCloseButtonHint)
-	, m_controller(controller)
 	, m_input(input)
 	, m_rotation(input->rotationSource())
 {
@ -26,22 +25,13 @@ SensorView::SensorView(GameController* controller, InputController* input, QWidg
 	        this, &SensorView::setLuminanceValue);
 	connect(m_ui.lightSlide, &QAbstractSlider::valueChanged, this, &SensorView::setLuminanceValue);

-	connect(m_ui.timeNoOverride, &QAbstractButton::clicked, controller, &GameController::setRealTime);
-	connect(m_ui.timeFixed, &QRadioButton::clicked, [controller, this] () {
-		controller->setFixedTime(m_ui.time->dateTime());
-	});
-	connect(m_ui.timeFakeEpoch, &QRadioButton::clicked, [controller, this] () {
-		controller->setFakeEpoch(m_ui.time->dateTime());
-	});
-	connect(m_ui.time, &QDateTimeEdit::dateTimeChanged, [controller, this] (const QDateTime&) {
+	connect(m_ui.time, &QDateTimeEdit::dateTimeChanged, [this] (const QDateTime&) {
 		m_ui.timeButtons->checkedButton()->clicked();
 	});
-	connect(m_ui.timeNow, &QPushButton::clicked, [controller, this] () {
+	connect(m_ui.timeNow, &QPushButton::clicked, [this] () {
 		m_ui.time->setDateTime(QDateTime::currentDateTime());
 	});

-	connect(m_controller, &GameController::luminanceValueChanged, this, &SensorView::luminanceValueChanged);
-
 	m_timer.setInterval(2);
 	connect(&m_timer, &QTimer::timeout, this, &SensorView::updateSensors);
 	if (!m_rotation || !m_rotation->readTiltX || !m_rotation->readTiltY) {
@ -66,6 +56,22 @@ SensorView::SensorView(GameController* controller, InputController* input, QWidg
 		m_input->setGyroSensitivity(value * 1e8f);
 	});
 	m_input->stealFocus(this);
+	connect(m_input, &InputController::luminanceValueChanged, this, &SensorView::luminanceValueChanged);
+}
+
+void SensorView::setController(std::shared_ptr<CoreController> controller) {
+	m_controller = controller;
+	connect(m_ui.timeNoOverride, &QAbstractButton::clicked, controller.get(), &CoreController::setRealTime);
+	connect(m_ui.timeFixed, &QRadioButton::clicked, [controller, this] () {
+		controller->setFixedTime(m_ui.time->dateTime());
+	});
+	connect(m_ui.timeFakeEpoch, &QRadioButton::clicked, [controller, this] () {
+		controller->setFakeEpoch(m_ui.time->dateTime());
+	});
+
+	connect(controller.get(), &CoreController::stopping, [this]() {
+		m_controller.reset();
+	});
 }

 void SensorView::jiggerer(QAbstractButton* button, void (InputController::*setter)(int)) {
@ -107,16 +113,7 @@ bool SensorView::eventFilter(QObject*, QEvent* event) {
 }

 void SensorView::updateSensors() {
-	GameController::Interrupter interrupter(m_controller);
-	if (m_rotation->sample &&
-	    (!m_controller->isLoaded() || !(static_cast<GBA*>(m_controller->thread()->core->board)->memory.hw.devices & (HW_GYRO | HW_TILT)))) {
-		m_rotation->sample(m_rotation);
-		m_rotation->sample(m_rotation);
-		m_rotation->sample(m_rotation);
-		m_rotation->sample(m_rotation);
-		m_rotation->sample(m_rotation);
-		m_rotation->sample(m_rotation);
-		m_rotation->sample(m_rotation);
+	if (m_rotation->sample && (!m_controller || m_controller->isPaused())) {
 		m_rotation->sample(m_rotation);
 	}
 	if (m_rotation->readTiltX && m_rotation->readTiltY) {
@ -132,7 +129,9 @@ void SensorView::updateSensors() {

 void SensorView::setLuminanceValue(int value) {
 	value = std::max(0, std::min(value, 255));
-	m_controller->setLuminanceValue(value);
+	if (m_input) {
+		m_input->setLuminanceValue(value);
+	}
 }

 void SensorView::luminanceValueChanged(int value) {
--- a/src/platform/qt/SensorView.h
+++ b/src/platform/qt/SensorView.h
@ -10,6 +10,7 @@
 #include <QDialog>

 #include <functional>
+#include <memory>

 #include "ui_SensorView.h"

@ -18,7 +19,7 @@ struct mRotationSource;
 namespace QGBA {

 class ConfigController;
-class GameController;
+class CoreController;
 class GamepadAxisEvent;
 class InputController;

@ -26,7 +27,9 @@ class SensorView : public QDialog {
 Q_OBJECT

 public:
-	SensorView(GameController* controller, InputController* input, QWidget* parent = nullptr);
+	SensorView(InputController* input, QWidget* parent = nullptr);
+
+	void setController(std::shared_ptr<CoreController>);

 protected:
 	bool eventFilter(QObject*, QEvent* event) override;
@ -41,7 +44,7 @@ private:
 	Ui::SensorView m_ui;

 	std::function<void(int)> m_jiggered;
-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
 	InputController* m_input;
 	mRotationSource* m_rotation;
 	QTimer m_timer;
--- a/src/platform/qt/SettingsView.cpp
+++ b/src/platform/qt/SettingsView.cpp
@ -183,19 +183,26 @@ SettingsView::SettingsView(ConfigController* controller, InputController* inputC

 SettingsView::~SettingsView() {
 #if defined(BUILD_GL) || defined(BUILD_GLES)
-	if (m_shader) {
-		m_ui.stackedWidget->removeWidget(m_shader);
-		m_shader->setParent(nullptr);
-	}
+	setShaderSelector(nullptr);
 #endif
 }

 void SettingsView::setShaderSelector(ShaderSelector* shaderSelector) {
 #if defined(BUILD_GL) || defined(BUILD_GLES)
+	if (m_shader) {
+		auto items = m_ui.tabs->findItems(tr("Shaders"), Qt::MatchFixedString);
+		for (const auto& item : items) {
+			m_ui.tabs->removeItemWidget(item);
+		}
+		m_ui.stackedWidget->removeWidget(m_shader);
+		m_shader->setParent(nullptr);
+	}
 	m_shader = shaderSelector;
-	m_ui.stackedWidget->addWidget(m_shader);
-	m_ui.tabs->addItem(tr("Shaders"));
-	connect(m_ui.buttonBox, &QDialogButtonBox::accepted, m_shader, &ShaderSelector::saved);
+	if (shaderSelector) {
+		m_ui.stackedWidget->addWidget(m_shader);
+		m_ui.tabs->addItem(tr("Shaders"));
+		connect(m_ui.buttonBox, &QDialogButtonBox::accepted, m_shader, &ShaderSelector::saved);
+	}
 #endif
 }

@ -281,6 +288,7 @@ void SettingsView::updateConfig() {
 	if (displayDriver != m_controller->getQtOption("displayDriver")) {
 		m_controller->setQtOption("displayDriver", displayDriver);
 		Display::setDriver(static_cast<Display::Driver>(displayDriver.toInt()));
+		setShaderSelector(nullptr);
 		emit displayDriverChanged();
 	}

--- a/src/platform/qt/TileView.cpp
+++ b/src/platform/qt/TileView.cpp
@ -5,6 +5,7 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "TileView.h"

+#include "CoreController.h"
 #include "GBAApp.h"

 #include <QFontDatabase>
@ -16,7 +17,7 @@

 using namespace QGBA;

-TileView::TileView(GameController* controller, QWidget* parent)
+TileView::TileView(std::shared_ptr<CoreController> controller, QWidget* parent)
 	: AssetView(controller, parent)
 	, m_controller(controller)
 {
@ -79,40 +80,40 @@ TileView::TileView(GameController* controller, QWidget* parent)
 void TileView::updateTilesGBA(bool force) {
 	if (m_ui.palette256->isChecked()) {
 		m_ui.tiles->setTileCount(1536);
-		mTileCacheSetPalette(m_tileCache.get(), 1);
+		mTileCacheSetPalette(m_tileCache, 1);
 		for (int i = 0; i < 1024; ++i) {
-			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache.get(), &m_tileStatus[32 * i], i, 0);
+			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache, &m_tileStatus[32 * i], i, 0);
 			if (data) {
 				m_ui.tiles->setTile(i, data);
 			} else if (force) {
-				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache.get(), i, 0));
+				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache, i, 0));
 			}
 		}
 		for (int i = 1024; i < 1536; ++i) {
-			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache.get(), &m_tileStatus[32 * i], i, 1);
+			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache, &m_tileStatus[32 * i], i, 1);
 			if (data) {
 				m_ui.tiles->setTile(i, data);
 			} else if (force) {
-				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache.get(), i, 1));
+				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache, i, 1));
 			}
 		}
 	} else {
 		m_ui.tiles->setTileCount(3072);
-		mTileCacheSetPalette(m_tileCache.get(), 0);
+		mTileCacheSetPalette(m_tileCache, 0);
 		for (int i = 0; i < 2048; ++i) {
-			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache.get(), &m_tileStatus[32 * i], i, m_paletteId);
+			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache, &m_tileStatus[32 * i], i, m_paletteId);
 			if (data) {
 				m_ui.tiles->setTile(i, data);
 			} else if (force) {
-				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache.get(), i, m_paletteId));
+				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache, i, m_paletteId));
 			}
 		}
 		for (int i = 2048; i < 3072; ++i) {
-			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache.get(), &m_tileStatus[32 * i], i, m_paletteId + 16);
+			const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache, &m_tileStatus[32 * i], i, m_paletteId + 16);
 			if (data) {
 				m_ui.tiles->setTile(i, data);
 			} else if (force) {
-				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache.get(), i, m_paletteId + 16));
+				m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache, i, m_paletteId + 16));
 			}
 		}
 	}
@ -124,13 +125,13 @@ void TileView::updateTilesGB(bool force) {
 	const GB* gb = static_cast<const GB*>(m_controller->thread()->core->board);
 	int count = gb->model >= GB_MODEL_CGB ? 1024 : 512;
 	m_ui.tiles->setTileCount(count);
-	mTileCacheSetPalette(m_tileCache.get(), 0);
+	mTileCacheSetPalette(m_tileCache, 0);
 	for (int i = 0; i < count; ++i) {
-		const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache.get(), &m_tileStatus[16 * i], i, m_paletteId);
+		const uint16_t* data = mTileCacheGetTileIfDirty(m_tileCache, &m_tileStatus[16 * i], i, m_paletteId);
 		if (data) {
 			m_ui.tiles->setTile(i, data);
 		} else if (force) {
-			m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache.get(), i, m_paletteId));
+			m_ui.tiles->setTile(i, mTileCacheGetTile(m_tileCache, i, m_paletteId));
 		}
 	}
 }
--- a/src/platform/qt/TileView.h
+++ b/src/platform/qt/TileView.h
@ -7,7 +7,6 @@
 #define QGBA_TILE_VIEW

 #include "AssetView.h"
-#include "GameController.h"

 #include "ui_TileView.h"

@ -15,11 +14,13 @@

 namespace QGBA {

+class CoreController;
+
 class TileView : public AssetView {
 Q_OBJECT

 public:
-	TileView(GameController* controller, QWidget* parent = nullptr);
+	TileView(std::shared_ptr<CoreController> controller, QWidget* parent = nullptr);

 public slots:
 	void updatePalette(int);
@ -34,7 +35,7 @@ private:

 	Ui::TileView m_ui;

-	GameController* m_controller;
+	std::shared_ptr<CoreController> m_controller;
 	mTileCacheEntry m_tileStatus[3072 * 32] = {}; // TODO: Correct size
 	int m_paletteId = 0;
 };
--- a/src/platform/qt/VFileDevice.cpp
+++ b/src/platform/qt/VFileDevice.cpp
@ -13,7 +13,33 @@ VFileDevice::VFileDevice(VFile* vf, QObject* parent)
 	: QIODevice(parent)
 	, m_vf(vf)
 {
-	// Nothing to do
+	// TODO: Correct mode
+	if (vf) {
+		setOpenMode(QIODevice::ReadWrite);
+	}
+}
+
+void VFileDevice::close() {
+	QIODevice::close();
+	m_vf->close(m_vf);
+	m_vf = nullptr;
+}
+
+bool VFileDevice::resize(qint64 sz) {
+	m_vf->truncate(m_vf, sz);
+	return true;
+}
+
+bool VFileDevice::seek(qint64 pos) {
+	QIODevice::seek(pos);
+	return m_vf->seek(m_vf, pos, SEEK_SET) == pos;
+}
+
+VFileDevice& VFileDevice::operator=(VFile* vf) {
+	close();
+	m_vf = vf;
+	setOpenMode(QIODevice::ReadWrite);
+	return *this;
 }

 qint64 VFileDevice::readData(char* data, qint64 maxSize) {
--- a/src/platform/qt/VFileDevice.h
+++ b/src/platform/qt/VFileDevice.h
@ -17,7 +17,16 @@ class VFileDevice : public QIODevice {
 Q_OBJECT

 public:
-	VFileDevice(VFile* vf, QObject* parent = nullptr);
+	VFileDevice(VFile* vf = nullptr, QObject* parent = nullptr);
+
+	virtual void close() override;
+	virtual bool seek(qint64 pos) override;
+	virtual qint64 size() const override;
+
+	bool resize(qint64 sz);
+
+	VFileDevice& operator=(VFile*);
+	operator VFile*() { return m_vf; }

 	static VFile* open(const QString& path, int mode);
 	static VDir* openDir(const QString& path);
@ -26,7 +35,6 @@ public:
 protected:
 	virtual qint64 readData(char* data, qint64 maxSize) override;
 	virtual qint64 writeData(const char* data, qint64 maxSize) override;
-	virtual qint64 size() const override;

 private:
 	VFile* m_vf;
--- a/src/platform/qt/VideoView.cpp
+++ b/src/platform/qt/VideoView.cpp
@ -195,6 +195,14 @@ VideoView::~VideoView() {
 	free(m_containerCstr);
 }

+void VideoView::setController(std::shared_ptr<CoreController> controller) {
+	connect(controller.get(), &CoreController::stopping, this, &VideoView::stopRecording);
+	connect(this, &VideoView::recordingStarted, controller.get(), &CoreController::setAVStream);
+	connect(this, &VideoView::recordingStopped, controller.get(), &CoreController::clearAVStream, Qt::DirectConnection);
+
+	setNativeResolution(controller->screenDimensions());
+}
+
 void VideoView::startRecording() {
 	if (!validateSettings()) {
 		return;
--- a/src/platform/qt/VideoView.h
+++ b/src/platform/qt/VideoView.h
@ -10,12 +10,18 @@

 #include <QWidget>

+#include <memory>
+
+#include "CoreController.h"
+
 #include "ui_VideoView.h"

 #include "feature/ffmpeg/ffmpeg-encoder.h"

 namespace QGBA {

+class CoreController;
+
 class VideoView : public QWidget {
 Q_OBJECT

@ -26,6 +32,8 @@ public:
 	mAVStream* getStream() { return &m_encoder.d; }

 public slots:
+	void setController(std::shared_ptr<CoreController>);
+
 	void startRecording();
 	void stopRecording();
 	void setNativeResolution(const QSize&);
--- a/src/platform/qt/Window.cpp
+++ b/src/platform/qt/Window.cpp
--- a/src/platform/qt/Window.h
+++ b/src/platform/qt/Window.h
@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2016 Jeffrey Pfau
+/* Copyright (c) 2013-2017 Jeffrey Pfau
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
@ -12,6 +12,7 @@
 #include <QTimer>

 #include <functional>
+#include <memory>

 #include <mgba/core/thread.h>

@ -22,14 +23,17 @@ struct mArguments;

 namespace QGBA {

+class AudioProcessor;
 class ConfigController;
+class CoreController;
+class CoreManager;
 class DebuggerConsoleController;
 class Display;
-class GameController;
 class GDBController;
 class GIFView;
 class LibraryController;
 class LogView;
+class OverrideView;
 class ShaderSelector;
 class VideoView;
 class WindowBackground;
@ -38,10 +42,10 @@ class Window : public QMainWindow {
 Q_OBJECT

 public:
-	Window(ConfigController* config, int playerId = 0, QWidget* parent = nullptr);
+	Window(CoreManager* manager, ConfigController* config, int playerId = 0, QWidget* parent = nullptr);
 	virtual ~Window();

-	GameController* controller() { return m_controller; }
+	std::shared_ptr<CoreController> controller() { return m_controller; }

 	void setConfig(ConfigController*);
 	void argumentsPassed(mArguments*);
@ -51,13 +55,12 @@ public:
 	void updateMultiplayerStatus(bool canOpenAnother) { m_multiWindow->setEnabled(canOpenAnother); }

 signals:
-	void startDrawing(mCoreThread*);
+	void startDrawing();
 	void shutdown();
-	void audioBufferSamplesChanged(int samples);
-	void sampleRateChanged(unsigned samples);
-	void fpsTargetChanged(float target);
+	void paused(bool);

 public slots:
+	void setController(CoreController* controller, const QString& fname);
 	void selectROM();
 #ifdef USE_SQLITE3
 	void selectROMInArchive();
@ -80,7 +83,6 @@ public slots:
 	void exportSharkport();

 	void openSettingsWindow();
-	void openAboutScreen();

 	void startVideoLog();

@ -113,12 +115,15 @@ protected:
 	virtual void mouseReleaseEvent(QMouseEvent*) override;

 private slots:
-	void gameStarted(mCoreThread*, const QString&);
+	void gameStarted();
 	void gameStopped();
 	void gameCrashed(const QString&);
 	void gameFailed();
 	void unimplementedBiosCall(int);

+	void reloadAudioDriver();
+	void reloadDisplayDriver();
+
 	void tryMakePortable();
 	void mustRestart();

@ -141,8 +146,8 @@ private:

 	void openView(QWidget* widget);

-	template <typename T, typename A> std::function<void()> openTView(A arg);
-	template <typename T> std::function<void()> openTView();
+	template <typename T, typename... A> std::function<void()> openTView(A... arg);
+	template <typename T, typename... A> std::function<void()> openControllerTView(A... arg);

 	QAction* addControlledAction(QMenu* menu, QAction* action, const QString& name);
 	QAction* addHiddenAction(QMenu* menu, QAction* action, const QString& name);
@ -152,8 +157,11 @@ private:
 	QString getFilters() const;
 	QString getFiltersArchive() const;

-	GameController* m_controller;
-	Display* m_display;
+	CoreManager* m_manager;
+	std::shared_ptr<CoreController> m_controller;
+	std::unique_ptr<AudioProcessor> m_audioProcessor;
+
+	std::unique_ptr<Display> m_display;
 	int m_savedScale;
 	// TODO: Move these to a new class
 	QList<QAction*> m_gameActions;
@ -177,14 +185,17 @@ private:
 	QMenu* m_mruMenu = nullptr;
 	QMenu* m_videoLayers;
 	QMenu* m_audioChannels;
-	ShaderSelector* m_shaderView;
+	std::unique_ptr<ShaderSelector> m_shaderView;
 	bool m_fullscreenOnStart = false;
 	QTimer m_focusCheck;
 	bool m_autoresume = false;
 	bool m_wasOpened = false;
+	QString m_pendingPatch;

 	bool m_hitUnimplementedBiosCall;

+	OverrideView* m_overrideView = nullptr;
+
 #ifdef USE_FFMPEG
 	VideoView* m_videoView = nullptr;
 #endif
--- a/src/platform/qt/input/InputController.cpp
+++ b/src/platform/qt/input/InputController.cpp
@ -6,7 +6,7 @@
 #include "InputController.h"

 #include "ConfigController.h"
-#include "GameController.h"
+#include "CoreController.h"
 #include "GamepadAxisEvent.h"
 #include "GamepadButtonEvent.h"
 #include "InputItem.h"
@ -94,18 +94,42 @@ void InputController::addKey(const QString& name) {
 		return;
 	}
 	m_keyIndex.addItem(qMakePair([this, name]() {
-		emit keyPressed(keyId(name));
+		m_activeKeys |= 1 << keyId(name);
 	}, [this, name]() {
-		emit keyReleased(keyId(name));
+		m_activeKeys &= ~(1 << keyId(name));
 	}), name, QString("key%0").arg(name), m_bindings.get());

 	m_keyIndex.addItem(qMakePair([this, name]() {
-		emit keyAutofire(keyId(name), true);
+		setAutofire(keyId(name), true);
 	}, [this, name]() {
-		emit keyAutofire(keyId(name), false);
+		setAutofire(keyId(name), false);
 	}), name, QString("autofire%1").arg(name), m_autofire.get());
 }

+void InputController::setAutofire(int key, bool enable) {
+	if (key >= 32 || key < 0) {
+		return;
+	}
+
+	m_autofireEnabled[key] = enable;
+	m_autofireStatus[key] = 0;
+}
+
+int InputController::updateAutofire() {
+	int active = 0;
+	for (int k = 0; k < 32; ++k) {
+		if (!m_autofireEnabled[k]) {
+			continue;
+		}
+		++m_autofireStatus[k];
+		if (m_autofireStatus[k]) {
+			m_autofireStatus[k] = 0;
+			active |= 1 << k;
+		}
+	}
+	return active;
+}
+
 void InputController::addPlatform(mPlatform platform, const mInputPlatformInfo* info) {
 	m_keyInfo[platform] = info;
 	for (size_t i = 0; i < info->nKeys; ++i) {
@ -130,6 +154,20 @@ void InputController::setPlatform(mPlatform platform) {

 	rebuildKeyIndex();
 	restoreModel();
+
+#ifdef M_CORE_GBA
+	m_lux.p = this;
+	m_lux.sample = [](GBALuminanceSource* context) {
+		InputControllerLux* lux = static_cast<InputControllerLux*>(context);
+		lux->value = 0xFF - lux->p->m_luxValue;
+	};
+
+	m_lux.readLuminance = [](GBALuminanceSource* context) {
+		InputControllerLux* lux = static_cast<InputControllerLux*>(context);
+		return lux->value;
+	};
+	setLuminanceLevel(0);
+#endif
 }

 InputController::~InputController() {
@ -167,7 +205,6 @@ void InputController::setConfiguration(ConfigController* config) {
 	m_config = config;
 	m_inputIndex.setConfigController(config);
 	m_keyIndex.setConfigController(config);
-	setAllowOpposing(config->getOption("allowOpposingDirections").toInt());
 	loadConfiguration(KEYBOARD);
 	loadProfile(KEYBOARD, profileForType(KEYBOARD));
 #ifdef BUILD_SDL
@ -382,7 +419,7 @@ const mInputMap* InputController::map() {
 }

 int InputController::pollEvents() {
-	int activeButtons = 0;
+	int activeButtons = m_activeKeys;
 #ifdef BUILD_SDL
 	if (m_playerAttached && m_sdlPlayer.joystick) {
 		SDL_Joystick* joystick = m_sdlPlayer.joystick->joystick;
@ -853,3 +890,34 @@ void InputController::rebindKey(const QString& key) {
 	bindAxis(SDL_BINDING_BUTTON, item->axis(), item->direction(), key);
 #endif
 }
+
+void InputController::increaseLuminanceLevel() {
+	setLuminanceLevel(m_luxLevel + 1);
+}
+
+void InputController::decreaseLuminanceLevel() {
+	setLuminanceLevel(m_luxLevel - 1);
+}
+
+void InputController::setLuminanceLevel(int level) {
+	int value = 0x16;
+	level = std::max(0, std::min(10, level));
+	if (level > 0) {
+		value += GBA_LUX_LEVELS[level - 1];
+	}
+	setLuminanceValue(value);
+}
+
+void InputController::setLuminanceValue(uint8_t value) {
+	m_luxValue = value;
+	value = std::max<int>(value - 0x16, 0);
+	m_luxLevel = 10;
+	for (int i = 0; i < 10; ++i) {
+		if (value < GBA_LUX_LEVELS[i]) {
+			m_luxLevel = i;
+			break;
+		}
+	}
+	emit luminanceValueChanged(m_luxValue);
+}
+
--- a/src/platform/qt/input/InputController.h
+++ b/src/platform/qt/input/InputController.h
@ -21,6 +21,8 @@
 #include <mgba/core/core.h>
 #include <mgba/core/input.h>

+#include <mgba/gba/interface.h>
+
 #ifdef BUILD_SDL
 #include "platform/sdl/sdl-events.h"
 #endif
@ -62,8 +64,9 @@ public:
 	void saveProfile(uint32_t type, const QString& profile);
 	const char* profileForType(uint32_t type);

-	bool allowOpposing() const { return m_allowOpposing; }
-	void setAllowOpposing(bool allowOpposing) { m_allowOpposing = allowOpposing; }
+	GBAKey mapKeyboard(int key) const;
+
+	void bindKey(uint32_t type, int key, GBAKey);

 	const mInputMap* map();

@ -97,22 +100,29 @@ public:

 	mRumble* rumble();
 	mRotationSource* rotationSource();
+	GBALuminanceSource* luminance() { return &m_lux; }

 signals:
 	void profileLoaded(const QString& profile);
-	void keyPressed(int);
-	void keyReleased(int);
-	void keyAutofire(int, bool enabled);
+	void luminanceValueChanged(int value);

 public slots:
 	void testGamepad(int type);
 	void updateJoysticks();
+	int updateAutofire();
+
+	void setAutofire(int key, bool enable);

 	// TODO: Move these to somewhere that makes sense
 	void suspendScreensaver();
 	void resumeScreensaver();
 	void setScreensaverSuspendable(bool);

+	void increaseLuminanceLevel();
+	void decreaseLuminanceLevel();
+	void setLuminanceLevel(int level);
+	void setLuminanceValue(uint8_t value);
+
 protected:
 	bool eventFilter(QObject*, QEvent*) override;

@ -129,10 +139,21 @@ private:

 	InputIndex m_inputIndex;
 	InputIndex m_keyIndex;
+
+	struct InputControllerLux : GBALuminanceSource {
+		InputController* p;
+		uint8_t value;
+	} m_lux;
+	uint8_t m_luxValue;
+	int m_luxLevel;
+
 	mInputMap m_inputMap;
+	int m_activeKeys;
+	bool m_autofireEnabled[32] = {};
+	int m_autofireStatus[32] = {};
+
 	ConfigController* m_config = nullptr;
 	int m_playerId;
-	bool m_allowOpposing = false;
 	QWidget* m_topLevel;
 	QWidget* m_focusParent;
 	QMap<mPlatform, const mInputPlatformInfo*> m_keyInfo;
--- a/src/platform/qt/library/LibraryController.cpp
+++ b/src/platform/qt/library/LibraryController.cpp
@ -83,6 +83,9 @@ LibraryController::~LibraryController() {
 }

 void LibraryController::setViewStyle(LibraryStyle newStyle) {
+	if (m_currentStyle == newStyle) {
+		return;
+	}
 	m_currentStyle = newStyle;

 	AbstractGameList* newCurrentList = nullptr;