UI itself is usable

src/backend/Core.cpp

@@ -18,19 +18,21 @@ Core::Core() {
   if(SDL_GameControllerAddMappingsFromFile("resources/gamecontrollerdb.txt") < 0) {
     Util::warn("Failed to load game controller DB");
   }
+
+  cpu = std::make_unique<Interpreter>();
 }
 
 void Core::Stop() {
-  cpu->Reset();
-  cpu->mem.Reset();
   pause = true;
   romLoaded = false;
+  cpu->Reset();
+  cpu->mem.Reset();
 }
 
 void Core::LoadROM(const std::string& rom_) {
+  pause = true;
   rom = rom_;
   cpu->Reset();
-  pause = false;
   romLoaded = true;
 
   std::string archive_types[] = {".zip",".7z",".rar",".tar"};
@@ -49,6 +51,7 @@ void Core::LoadROM(const std::string& rom_) {
   cpu->mem.flash.Load(cpu->mem.saveType, rom);
   cpu->mem.LoadSRAM(cpu->mem.saveType, rom);
   PIF::ExecutePIF(cpu->mem, cpu->regs);
+  pause = false;
 }
 
 void Core::Run(float volumeL, float volumeR) {

src/frontend/CMakeLists.txt

@@ -50,7 +50,14 @@ set(CMAKE_AUTORCC ON)
 set(CMAKE_AUTOUIC ON)
 
 add_executable(kaizen-qt
-  main.cpp)
+  main.cpp
+  KaizenQt.hpp
+  KaizenQt.cpp
+  EmuThread.hpp
+  EmuThread.cpp
+  mainwindow.ui
+  MainWindow.hpp
+  MainWindow.cpp)
 
 target_link_libraries(kaizen-qt PUBLIC Qt6::Core Qt6::Gui Qt6::Widgets SDL2::SDL2 fmt::fmt mio::mio nlohmann_json::nlohmann_json
   discord-rpc nfd parallel-rdp backend)

src/frontend/EmuThread.cpp

@@ -0,0 +1,11 @@
+#include <EmuThread.hpp>
+
+EmuThread::EmuThread(QObject* parent_object) noexcept : QThread(parent_object) {}
+
+[[noreturn]] void EmuThread::run() noexcept {
+  while (true) {
+    if (!core.pause) {
+      core.Run(0.5, 0.5);
+    }
+  }
+}

src/frontend/EmuThread.hpp

@@ -0,0 +1,36 @@
+#pragma once
+#include <QThread>
+#include <Core.hpp>
+
+class EmuThread : public QThread
+{
+  Q_OBJECT
+
+public:
+  explicit EmuThread(QObject* parent_object) noexcept;
+
+  [[noreturn]] void run() noexcept override;
+
+  n64::Core core;
+  bool running = false;
+
+  void TogglePause()
+  {
+    running = !running;
+  }
+
+  void Reset()
+  {
+    running = false;
+    core.Stop();
+    core.LoadROM(core.rom);
+    running = true;
+  }
+
+  void Stop()
+  {
+    core.rom = {};
+    running = false;
+    core.Stop();
+  }
+};

src/frontend/KaizenQt.cpp

@@ -0,0 +1,28 @@
+#include <KaizenQt.hpp>
+#include <QMessageBox>
+#include <QApplication>
+
+KaizenQt::KaizenQt() noexcept
+  : mainWindow(new MainWindowController),
+  emuThread(new EmuThread(mainWindow))
+{
+  ConnectMainWindowSignalsToSlots();
+
+  mainWindow->show();
+}
+
+void KaizenQt::ConnectMainWindowSignalsToSlots() noexcept
+{
+  connect(mainWindow, &MainWindowController::OpenROM, this, &KaizenQt::LoadROM);
+  connect(mainWindow, &MainWindowController::Exit, this, []() {
+    QApplication::quit();
+    });
+  connect(mainWindow, &MainWindowController::Reset, emuThread, &EmuThread::Reset);
+  connect(mainWindow, &MainWindowController::Stop, emuThread, &EmuThread::Stop);
+  connect(mainWindow, &MainWindowController::Pause, emuThread, &EmuThread::TogglePause);
+}
+
+void KaizenQt::LoadROM(const QString& file_name) noexcept
+{
+  emuThread->core.LoadROM(file_name.toStdString());
+}

src/frontend/KaizenQt.hpp

@@ -0,0 +1,14 @@
+#pragma once
+#include <MainWindow.hpp>
+#include <EmuThread.hpp>
+
+class KaizenQt : public QObject {
+  Q_OBJECT
+public:
+  KaizenQt() noexcept;
+  void LoadROM(const QString& path) noexcept;
+private:
+  void ConnectMainWindowSignalsToSlots() noexcept;
+  MainWindowController* mainWindow;
+  EmuThread* emuThread;
+};

src/frontend/MainWindow.cpp

@@ -0,0 +1,54 @@
+#include <MainWindow.hpp>
+#include <QFileDialog>
+#include <QMessageBox>
+
+MainWindowController::MainWindowController() noexcept
+{
+  view.setupUi(this);
+  ConnectSignalsToSlots();
+}
+
+void MainWindowController::ConnectSignalsToSlots() noexcept
+{
+  connect(view.actionOpen, &QAction::triggered, this, [this]() {
+    QString file_name = QFileDialog::getOpenFileName(this);
+
+    if (!file_name.isEmpty())
+    {
+      view.actionPause->setEnabled(true);
+      view.actionReset->setEnabled(true);
+      view.actionStop->setEnabled(true);
+      emit OpenROM(file_name);
+    }
+    });
+
+  connect(view.actionExit, &QAction::triggered, this, [this]() {
+    emit Exit();
+    });
+
+  connect(view.actionReset, &QAction::triggered, this, [this]() {
+    emit Reset();
+    });
+
+  connect(view.actionStop, &QAction::triggered, this, [this]() {
+    view.actionPause->setDisabled(true);
+    view.actionReset->setDisabled(true);
+    view.actionStop->setDisabled(true);
+    emit Stop();
+    });
+
+  connect(view.actionPause, &QAction::triggered, this, [this]() {
+    textPauseToggle = !textPauseToggle;
+    view.actionPause->setText(textPauseToggle ? "Resume" : "Pause");
+    emit Pause();
+    });
+
+  connect(view.actionAbout, &QAction::triggered, this, [this]() {
+    QMessageBox::about(
+      this, tr("About Kaizen"),
+      tr("Kaizen is a Nintendo 64 emulator that strives to offer a friendly user "
+        "experience and great compatibility.\n"
+        "sliice is licensed under the BSD 3-clause license.\n"
+        "Nintendo 64 is a registered trademarks of Nintendo Co., Ltd."));
+    });
+}

src/frontend/MainWindow.hpp

@@ -0,0 +1,24 @@
+#pragma once
+#include <QMainWindow>
+#include "ui_mainwindow.h"
+
+class MainWindowController : public QMainWindow
+{
+  Q_OBJECT
+
+public:
+  MainWindowController() noexcept;
+
+private:
+  void ConnectSignalsToSlots() noexcept;
+
+  Ui::MainWindow view;
+  bool textPauseToggle = false;
+
+signals:
+  void OpenROM(const QString& rom_file);
+  void Exit();
+  void Reset();
+  void Stop();
+  void Pause();
+};

src/frontend/main.cpp

@@ -1,6 +1,7 @@
 #include <QApplication>
 #include <QCommandLineParser>
 #include <QCommandLineOption>
+#include <KaizenQt.hpp>
 
 int main(int argc, char** argv) {
   QApplication app(argc, argv);
@@ -12,5 +13,10 @@ int main(int argc, char** argv) {
   parser.addHelpOption();
   parser.addPositionalArgument("rom", "Rom to launch from command-line");
   parser.process(app);
+  
+  KaizenQt kaizenQt;
+  if (!parser.positionalArguments().isEmpty())
+    kaizenQt.LoadROM(parser.positionalArguments().first());
+
   return app.exec();
 }

src/frontend/mainwindow.ui

@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Kaizen</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QVBoxLayout" name="verticalLayout">
+    <property name="spacing">
+     <number>0</number>
+    </property>
+    <property name="leftMargin">
+     <number>0</number>
+    </property>
+    <property name="topMargin">
+     <number>0</number>
+    </property>
+    <property name="rightMargin">
+     <number>0</number>
+    </property>
+    <property name="bottomMargin">
+     <number>0</number>
+    </property>
+   </layout>
+  </widget>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>800</width>
+     <height>21</height>
+    </rect>
+   </property>
+   <widget class="QMenu" name="menuFile">
+    <property name="title">
+     <string>File</string>
+    </property>
+    <addaction name="actionOpen"/>
+    <addaction name="actionExit"/>
+   </widget>
+   <widget class="QMenu" name="menuEmulation">
+    <property name="title">
+     <string>Emulation</string>
+    </property>
+    <addaction name="actionPause"/>
+    <addaction name="actionReset"/>
+    <addaction name="actionStop"/>
+   </widget>
+   <widget class="QMenu" name="menuAbout">
+    <property name="title">
+     <string>Help</string>
+    </property>
+    <addaction name="actionAbout"/>
+   </widget>
+   <addaction name="menuFile"/>
+   <addaction name="menuEmulation"/>
+   <addaction name="menuAbout"/>
+  </widget>
+  <widget class="QStatusBar" name="statusbar"/>
+  <action name="actionAbout">
+   <property name="text">
+    <string>About Kaizen</string>
+   </property>
+   <property name="statusTip">
+    <string>About this emulator</string>
+   </property>
+  </action>
+  <action name="actionOpen">
+   <property name="text">
+    <string>Open...</string>
+   </property>
+   <property name="statusTip">
+    <string>Open a ROM</string>
+   </property>
+   <property name="shortcut">
+    <string>Ctrl+O</string>
+   </property>
+  </action>
+  <action name="actionExit">
+   <property name="text">
+    <string>Exit</string>
+   </property>
+   <property name="statusTip">
+    <string>Quit the emulator</string>
+   </property>
+  </action>
+  <action name="actionPause">
+   <property name="text">
+    <string>Pause</string>
+   </property>
+   <property name="statusTip">
+    <string>Pause the emulation</string>
+   </property>
+  </action>
+  <action name="actionReset">
+   <property name="text">
+    <string>Reset</string>
+   </property>
+   <property name="statusTip">
+    <string>Reset the emulation</string>
+   </property>
+  </action>
+  <action name="actionStop">
+   <property name="text">
+    <string>Stop</string>
+   </property>
+   <property name="statusTip">
+    <string>Stop the emulation</string>
+   </property>
+  </action>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>