public void update(float tpf) {
        frameTPF = tpf;

        // Activate safemode if the TPF value is so small
        // that rounding errors are inevitable
        safeMode = tpf < 0.015f;

        long currentTime = keys.getInputTimeNanos();
        frameDelta = currentTime - lastUpdateTime;

        eventsPermitted = true;

        keys.update();
        mouse.update();
        if (joystick != null) {
            joystick.update();
        }
        if (touch != null) {
            touch.update();
        }

        eventsPermitted = false;

        processQueue();
        invokeUpdateActions();

        lastLastUpdateTime = lastUpdateTime;
        lastUpdateTime = currentTime;
    }
Updates the <code>InputManager</code>.
This will query current input devices and send
appropriate events to registered listeners.

@param tpf Time per frame value.
jme3-core/src/main/java/com/jme3/input/InputManager.java