void NativeEngine::HandleCommand()

in agdk/game_controller/gameactivity/app/src/main/cpp/native_engine.cpp [255:349]
82 lines of code
21 McCabe index (conditional complexity)

void NativeEngine::HandleCommand(int32_t cmd) {
    SceneManager *mgr = SceneManager::GetInstance();

    VLOGD("NativeEngine: handling command %d.", cmd);
    switch (cmd) {
        case APP_CMD_SAVE_STATE:
            // The system has asked us to save our current state.
            VLOGD("NativeEngine: APP_CMD_SAVE_STATE");
            mState.mHasFocus = mHasFocus;
            mApp->savedState = malloc(sizeof(mState));
            *((NativeEngineSavedState *) mApp->savedState) = mState;
            mApp->savedStateSize = sizeof(mState);
            break;
        case APP_CMD_INIT_WINDOW:
            // We have a window!
            VLOGD("NativeEngine: APP_CMD_INIT_WINDOW");
            if (mApp->window != NULL) {
                mHasWindow = true;
                if (mApp->savedStateSize == sizeof(mState) && mApp->savedState != nullptr) {
                    mState = *((NativeEngineSavedState *) mApp->savedState);
                    mHasFocus = mState.mHasFocus;
                } else {
                    // Workaround APP_CMD_GAINED_FOCUS issue where the focus state is not
                    // passed down from NativeActivity when restarting Activity
                    mHasFocus = appState.mHasFocus;
                }
            }
            VLOGD("HandleCommand(%d): hasWindow = %d, hasFocus = %d", cmd,
                  mHasWindow ? 1 : 0, mHasFocus ? 1 : 0);
            break;
        case APP_CMD_TERM_WINDOW:
            // The window is going away -- kill the surface
            VLOGD("NativeEngine: APP_CMD_TERM_WINDOW");
            KillSurface();
            mHasWindow = false;
            break;
        case APP_CMD_GAINED_FOCUS:
            VLOGD("NativeEngine: APP_CMD_GAINED_FOCUS");
            mHasFocus = true;
            mState.mHasFocus = appState.mHasFocus = mHasFocus;
            break;
        case APP_CMD_LOST_FOCUS:
            VLOGD("NativeEngine: APP_CMD_LOST_FOCUS");
            mHasFocus = false;
            mState.mHasFocus = appState.mHasFocus = mHasFocus;
            break;
        case APP_CMD_PAUSE:
            VLOGD("NativeEngine: APP_CMD_PAUSE");
            mgr->OnPause();
            break;
        case APP_CMD_RESUME:
            VLOGD("NativeEngine: APP_CMD_RESUME");
            mgr->OnResume();
            break;
        case APP_CMD_STOP:
            VLOGD("NativeEngine: APP_CMD_STOP");
            Paddleboat_onStop(mJniEnv);
            mIsVisible = false;
            break;
        case APP_CMD_START:
            VLOGD("NativeEngine: APP_CMD_START");
            Paddleboat_onStart(mJniEnv);
            mIsVisible = true;
            break;
        case APP_CMD_WINDOW_RESIZED:
        case APP_CMD_CONFIG_CHANGED:
            VLOGD("NativeEngine: %s", cmd == APP_CMD_WINDOW_RESIZED ?
                                      "APP_CMD_WINDOW_RESIZED" : "APP_CMD_CONFIG_CHANGED");
            // Window was resized or some other configuration changed.
            // Note: we don't handle this event because we check the surface dimensions
            // every frame, so that's how we know it was resized. If you are NOT doing that,
            // then you need to handle this event!
            break;
        case APP_CMD_LOW_MEMORY:
            VLOGD("NativeEngine: APP_CMD_LOW_MEMORY");
            // system told us we have low memory. So if we are not visible, let's
            // cooperate by deallocating all of our graphic resources.
            if (!mHasWindow) {
                VLOGD("NativeEngine: trimming memory footprint (deleting GL objects).");
                KillGLObjects();
            }
            break;
        case APP_CMD_WINDOW_INSETS_CHANGED:
            VLOGD("NativeEngine: APP_CMD_WINDOW_INSETS_CHANGED");
            UpdateSystemBarOffset();
            break;
        default:
            VLOGD("NativeEngine: (unknown command).");
            break;
    }

    VLOGD("NativeEngine: STATUS: F%d, V%d, W%d, EGL: D %p, S %p, CTX %p, CFG %p",
          mHasFocus, mIsVisible, mHasWindow, mEglDisplay, mEglSurface, mEglContext,
          mEglConfig);
}