Method Update

Source/Main/engine.cpp:1721–2331

Update the simulation

// Update the simulation
void Engine::Update() {
    game_timer.UpdateWallTime();

    PROFILER_ZONE(g_profiler_ctx, "Update");

    if (check_save_level_changes_dialog_is_showing) {
        // Wait for dialog to be complete
        UpdateControls(ui_timer.timestep, false);
        return;
    }

#ifdef WIN32
    {
        PROFILER_ZONE(g_profiler_ctx, "Wait for object updates");
        if (WaitForSingleObject(data_change_notification, 0) == WAIT_OBJECT_0 || WaitForSingleObject(write_change_notification, 0) == WAIT_OBJECT_0) {
            RequestLiveUpdate();
            while (WaitForSingleObject(data_change_notification, 0) == WAIT_OBJECT_0) {
                FindNextChangeNotification(data_change_notification);
            }
            while (write_change_notification != INVALID_HANDLE_VALUE && WaitForSingleObject(write_change_notification, 0) == WAIT_OBJECT_0) {
                FindNextChangeNotification(write_change_notification);
            }
        }
    }
#endif

#if ENABLE_STEAMWORKS
    {
        PROFILER_ZONE(g_profiler_ctx, "Steam update");
        Steamworks::Instance()->Update(current_engine_state_.type != kEngineLevelState && current_engine_state_.type != kEngineEditorLevelState);
    }
#endif

    while (queued_engine_state_.size() > 0) {
        bool continue_state_change = true;

        EngineState new_engine_state;

        bool found = false;
        std::deque<EngineState> history_copy = state_history;
        std::deque<EngineState> final_pop;

        LOGI << "Checking if we actually allow any state changes" << std::endl;

        switch (current_engine_state_.type) {
            case kEngineLevelState:
            case kEngineEditorLevelState:
                if (scenegraph_) {
                    if (!check_save_level_changes_dialog_is_finished && !check_save_level_changes_dialog_is_showing) {
                        // Trigger save dialog
                        Input::Instance()->SetGrabMouse(false);
                        check_save_level_changes_dialog_is_showing = true;
                        check_save_level_changes_dialog_quit_if_not_cancelled = false;
                        check_save_level_changes_dialog_is_finished = false;
                        return;
                    }

                    continue_state_change = check_save_level_changes_last_result;