add 'display.limit-fps-iconified' setting

res/layouts/pages/settings_display.xml.lua

@@ -60,4 +60,5 @@ function on_open()
     create_checkbox("camera.shaking", "Camera Shaking")
     create_checkbox("camera.inertia", "Camera Inertia")
     create_checkbox("camera.fov-effects", "Camera FOV Effects")
+    create_checkbox("display.limit-fps-iconified", "Limit Background FPS")
 end

res/texts/ru_RU.txt

@@ -76,6 +76,7 @@ settings.Regular Sounds=Обычные Звуки
 settings.UI Sounds=Звуки Интерфейса
 settings.V-Sync=Вертикальная Синхронизация
 settings.Key=Кнопка
+settings.Limit Background FPS=Ограничить фоновую частоту кадров
 
 # Управление
 chunks.reload=Перезагрузить Чанки

src/engine.cpp

@@ -185,8 +185,11 @@ void Engine::mainloop() {
         if (!Window::isIconified()) {
             renderFrame(batch);
         }
-        Window::setFramerate(Window::isIconified() ? 20 : 
+        Window::setFramerate(
-                             settings.display.framerate.get());
+            Window::isIconified() && settings.display.limitFpsIconified.get()
+                ? 20
+                : settings.display.framerate.get()
+        );
 
         processPostRunnables();
 

src/files/settings_io.cpp

@@ -51,6 +51,7 @@ SettingsHandler::SettingsHandler(EngineSettings& settings) {
     builder.add("samples", &settings.display.samples);
     builder.add("framerate", &settings.display.framerate);
     builder.add("fullscreen", &settings.display.fullscreen);
+    builder.add("limit-fps-iconified", &settings.display.limitFpsIconified);
 
     builder.section("camera");
     builder.add("sensitivity", &settings.camera.sensitivity);

src/settings.hpp

@@ -29,6 +29,8 @@ struct DisplaySettings {
     IntegerSetting samples {0};
     /// @brief Framerate limit
     IntegerSetting framerate {-1, -1, 120};
+    /// @brief Limit framerate when window is iconified
+    FlagSetting limitFpsIconified {false};
 };
 
 struct ChunksSettings {