add persistent dir

loader/include/Geode/loader/Dirs.hpp

@@ -56,4 +56,9 @@ namespace geode::dirs {
      * Directory where crashlogs are stored
      */
     GEODE_DLL std::filesystem::path getCrashlogsDir();
+    /**
+     * Directory where mods' persistent files lie
+     * This directory is not deleted even when Geode is uninstalled
+     */
+    GEODE_DLL std::filesystem::path getModPersistentDir();
 }

loader/include/Geode/loader/Mod.hpp

@@ -172,6 +172,11 @@ namespace geode {
          * Get the mod's config directory path
          */
         std::filesystem::path getConfigDir(bool create = true) const;
+        /**
+         * Get the mod's persistent directory path
+         * This directory is not deleted even when Geode/mod is uninstalled
+         */
+        std::filesystem::path getPersistentDir(bool create = true) const;
 
         /**
          * Returns true if this mod has any settings

loader/src/loader/Dirs.cpp

@@ -24,15 +24,15 @@ std::filesystem::path dirs::getGeodeLogDir() {
 }
 
 std::filesystem::path dirs::getTempDir() {
-    return getGeodeDir() / "temp";
+    return dirs::getGeodeDir() / "temp";
 }
 
 std::filesystem::path dirs::getModsDir() {
-    return getGeodeDir() / "mods";
+    return dirs::getGeodeDir() / "mods";
 }
 
 std::filesystem::path dirs::getModsSaveDir() {
-    return getGeodeSaveDir() / "mods";
+    return dirs::getGeodeSaveDir() / "mods";
 }
 
 std::filesystem::path dirs::getModConfigDir() {
@@ -46,3 +46,7 @@ std::filesystem::path dirs::getIndexDir() {
 std::filesystem::path dirs::getCrashlogsDir() {
     return crashlog::getCrashLogDirectory();
 }
+
+std::filesystem::path dirs::getModPersistentDir() {
+    return dirs::getSaveDir() / "geode-persistent";
+}

loader/src/loader/Mod.cpp

@@ -143,6 +143,10 @@ std::filesystem::path Mod::getConfigDir(bool create) const {
     return m_impl->getConfigDir(create);
 }
 
+std::filesystem::path Mod::getPersistentDir(bool create) const {
+    return m_impl->getPersistentDir(create);
+}
+
 bool Mod::hasSettings() const {
     return m_impl->hasSettings();
 }

loader/src/loader/ModImpl.cpp

@@ -656,6 +656,14 @@ std::filesystem::path Mod::Impl::getConfigDir(bool create) const {
     return dir;
 }
 
+std::filesystem::path Mod::Impl::getPersistentDir(bool create) const {
+    auto dir = dirs::getModPersistentDir() / m_metadata.getID();
+    if (create) {
+        (void)file::createDirectoryAll(dir);
+    }
+    return dir;
+}
+
 std::string_view Mod::Impl::expandSpriteName(std::string_view name) {
     std::string nameKey(name);
     if (m_expandedSprites.contains(nameKey)) return m_expandedSprites[nameKey];

loader/src/loader/ModImpl.hpp

@@ -113,6 +113,7 @@ namespace geode {
 
         std::filesystem::path getSaveDir() const;
         std::filesystem::path getConfigDir(bool create = true) const;
+        std::filesystem::path getPersistentDir(bool create = true) const;
 
         bool hasSettings() const;
         std::vector<std::string> getSettingKeys() const;