paths: ensure imgui and game_config respects the project path (#1505)

* paths: ensure `imgui` respects the project path

* paths: remove extra creation of `game_config/` this is done when the settings are saved

common/custom_data/TFrag3Data.cpp

@@ -297,7 +297,8 @@ void MercModelGroup::serialize(Serializer& ser) {
 void Level::serialize(Serializer& ser) {
   ser.from_ptr(&version);
   if (ser.is_loading() && version != TFRAG3_VERSION) {
-    ASSERT_MSG(false, fmt::format("version mismatch when loading tfrag3 data. Got {}, expected {}",
+    ASSERT_MSG(false, fmt::format("version mismatch when loading tfrag3 data. Got {}, expected {}, "
+                                  "did you forget to re-decompile?",
                                   version, TFRAG3_VERSION));
   }
 

game/graphics/pipelines/opengl.cpp

@@ -234,6 +234,11 @@ static std::shared_ptr<GfxDisplay> gl_make_display(int width,
   // this does initialization for stuff like the font data
   ImGui::CreateContext();
 
+  // Init ImGui settings
+  ImGuiIO& io = ImGui::GetIO();
+  io.IniFilename = file_util::get_file_path({"imgui.ini"}).c_str();
+  io.LogFilename = file_util::get_file_path({"imgui_log.txt"}).c_str();
+
   // set up to get inputs for this window
   ImGui_ImplGlfw_InitForOpenGL(window, true);
 

game/runtime.cpp

@@ -282,8 +282,6 @@ RuntimeExitStatus exec_runtime(int argc, char** argv) {
   g_argv = argv;
   g_main_thread_id = std::this_thread::get_id();
 
-  file_util::create_dir_if_needed("game_config/");
-
   // parse opengoal arguments
   bool enable_display = true;
   for (int i = 1; i < argc; i++) {