Method processJoystickEvents

src/SFML/Window/WindowImpl.cpp:287–348

///////////////////////////////////////////////////////

////////////////////////////////////////////////////////////
void WindowImpl::processJoystickEvents()
{
    // First update the global joystick states
    JoystickManager::getInstance().update();

    for (unsigned int i = 0; i < Joystick::Count; ++i)
    {
        // Copy the previous state of the joystick and get the new one
        const JoystickState previousState = m_joystickStatesImpl->states[i];
        m_joystickStatesImpl->states[i]   = JoystickManager::getInstance().getState(i);

        // Connection state
        const bool connected = m_joystickStatesImpl->states[i].connected;
        if (previousState.connected != connected)
        {
            if (connected)
                pushEvent(Event::JoystickConnected{i});
            else
                pushEvent(Event::JoystickDisconnected{i});

            // Clear previous axes positions
            if (connected)
                m_previousAxes[i].fill(0.f);
        }

        if (connected)
        {
            const JoystickCaps caps = JoystickManager::getInstance().getCapabilities(i);

            // Axes
            for (unsigned int j = 0; j < Joystick::AxisCount; ++j)
            {
                const auto axis = static_cast<Joystick::Axis>(j);
                if (caps.axes[axis])
                {
                    const float prevPos = m_previousAxes[i][axis];
                    const float currPos = m_joystickStatesImpl->states[i].axes[axis];
                    if (std::abs(currPos - prevPos) >= m_joystickThreshold)
                    {
                        pushEvent(Event::JoystickMoved{i, axis, currPos});
                        m_previousAxes[i][axis] = currPos;
                    }
                }
            }

            // Buttons
            for (unsigned int j = 0; j < caps.buttonCount; ++j)
            {
                const bool prevPressed = previousState.buttons[j];
                const bool currPressed = m_joystickStatesImpl->states[i].buttons[j];

                if (prevPressed != currPressed)
                {
                    if (currPressed)
                        pushEvent(Event::JoystickButtonPressed{i, j});
                    else
                        pushEvent(Event::JoystickButtonReleased{i, j});
                }