Customizable saves path

src/backend/core/Mem.cpp

@@ -38,6 +38,9 @@ void Mem::Reset() {
 void Mem::LoadSRAM(SaveType save_type, fs::path path) {
   if(save_type == SAVE_SRAM_256k) {
     std::error_code error;
+    if (!savePath.empty()) {
+      path = savePath / path.filename();
+    }
     sramPath = path.replace_extension(".sram").string();
     if(saveData.is_mapped()) {
       saveData.sync(error);

src/backend/core/mem/Flash.cpp

@@ -12,7 +12,11 @@ void Flash::Reset() {
 
 void Flash::Load(SaveType saveType, const std::string& path) {
   if(saveType == SAVE_FLASH_1m) {
-    flashPath = fs::path(path).replace_extension(".flash").string();
+    fs::path flashPath_ = path;
+    if (!savePath.empty()) {
+      flashPath_ = savePath / flashPath_.filename();
+    }
+    flashPath = flashPath_.replace_extension(".flash").string();
     std::error_code error;
     if (saveData.is_mapped()) {
       saveData.sync(error);

src/backend/core/mmio/PIF.cpp

@@ -30,7 +30,11 @@ void PIF::Reset() {
 
 void PIF::MaybeLoadMempak() {
   if(!mempakOpen) {
-    mempakPath = fs::path(mempakPath).replace_extension(".mempak").string();
+    fs::path mempakPath_ = mempakPath;
+    if (!savePath.empty()) {
+      mempakPath_ = savePath / mempakPath_.filename();
+    }
+    mempakPath = mempakPath_.replace_extension(".mempak").string();
     std::error_code error;
     if (mempak.is_mapped()) {
       mempak.sync(error);
@@ -74,7 +78,11 @@ FORCE_INLINE size_t GetSaveSize(SaveType saveType) {
 
 void PIF::LoadEeprom(SaveType saveType, const std::string& path) {
   if(saveType == SAVE_EEPROM_16k || saveType == SAVE_EEPROM_4k) {
-    eepromPath = fs::path(path).replace_extension(".eeprom").string();
+    fs::path eepromPath_ = path;
+    if (!savePath.empty()) {
+      eepromPath_ = savePath / eepromPath_.filename();
+    }
+    eepromPath = eepromPath_.replace_extension(".eeprom").string();
     std::error_code error;
     if (eeprom.is_mapped()) {
       eeprom.sync(error);

src/common.hpp

@@ -19,6 +19,7 @@ using m128i = __m128i;
 
 constexpr u32 N64_CPU_FREQ = 93750000;
 constexpr u16 KAIZEN_VERSION = 0x010;
+extern std::string savePath;
 
 static FORCE_INLINE constexpr u32 GetCyclesPerFrame(bool pal) {
   if (pal) {

src/frontend/JSONUtils.hpp

@@ -16,6 +16,7 @@ static inline nlohmann::json JSONOpenOrCreate(const std::string& path) {
   } else {
     auto file = std::fstream(path, std::fstream::in | std::fstream::out | std::fstream::trunc);
     nlohmann::json json;
+    json["general"]["savePath"] = "";
     json["audio"]["volumeL"] = 0.5;
     json["audio"]["volumeR"] = 0.5;
     json["audio"]["lock"] = true;

src/frontend/SettingsWindow.cpp

@@ -2,10 +2,16 @@
 #include <QGroupBox>
 #include <QVBoxLayout>
 #include <QButtonGroup>
+#include <QFileDialog>
+#include <fmt/core.h>
+
+std::string savePath = "";
 
 SettingsWindow::SettingsWindow() : QWidget(nullptr) {
   settings = JSONOpenOrCreate("resources/settings.json");
 
+  savePath = JSONGetField<std::string>(settings, "general", "savePath");
+
   if (objectName().isEmpty())
     setObjectName("Settings");
 
@@ -15,9 +21,31 @@ SettingsWindow::SettingsWindow() : QWidget(nullptr) {
   cpuSettings = new CPUSettings(settings);
   audioSettings = new AudioSettings(settings);
   inputSettings = new InputSettings(settings);
+  generalSettings = new QWidget;
   keyMap = inputSettings->GetMappedKeys();
 
+  folderLabelPrefix = new QLabel("Save files' path: ");
+  folderLabel = new QLabel(fmt::format("{}", savePath).c_str());
+
+  connect(folderBtn, &QPushButton::pressed, this, [&]() {
+    savePath = QFileDialog::getExistingDirectory(this, tr("Select directory")).toStdString();
+    folderLabel->setText(fmt::format("{}", savePath).c_str());
+    JSONSetField(settings, "general", "savePath", savePath);
+    apply->setEnabled(true);
+  });
+
+  auto generalLayout = new QHBoxLayout;
+  auto generalLayoutV = new QVBoxLayout;
+  generalLayout->addWidget(folderLabelPrefix);
+  generalLayout->addWidget(folderLabel);
+  generalLayout->addStretch();
+  generalLayout->addWidget(folderBtn);
+  generalLayoutV->addLayout(generalLayout);
+  generalLayoutV->addStretch();
+  generalSettings->setLayout(generalLayoutV);
+
   auto* tabs = new QTabWidget;
+  tabs->addTab(generalSettings, tr("General"));
   tabs->addTab(cpuSettings, tr("CPU"));
   tabs->addTab(audioSettings, tr("Audio"));
   tabs->addTab(inputSettings, tr("Input"));

src/frontend/SettingsWindow.hpp

@@ -2,6 +2,7 @@
 #include <QWidget>
 #include <QTabWidget>
 #include <QPushButton>
+#include <QFileIconProvider>
 #include <CPUSettings.hpp>
 #include <AudioSettings.hpp>
 #include <InputSettings.hpp>
@@ -9,6 +10,10 @@
 class SettingsWindow : public QWidget {
   QPushButton* cancel = new QPushButton("Cancel");
   QPushButton* apply = new QPushButton("Apply");
+  QFileIconProvider* iconProv = new QFileIconProvider;
+  QPushButton* folderBtn = new QPushButton(iconProv->icon(QFileIconProvider::Folder), "");
+  QLabel* folderLabelPrefix;
+  QLabel* folderLabel;
   Q_OBJECT
 public:
   float getVolumeL() { return float(audioSettings->volumeL->value()) / 100.f; }
@@ -19,6 +24,7 @@ public:
   CPUSettings* cpuSettings;
   AudioSettings* audioSettings;
   InputSettings* inputSettings;
+  QWidget* generalSettings;
 Q_SIGNALS:
   void regrabKeyboard();
 };