Add Joystick and Gamepad support

Support for Joystick & Gamepad

To add GamePad and Joystick support, we will use the JInput java library.

To integrate the library with Maven dependency manager :

<dependency>
    <groupId>net.java.jinput</groupId>
    <artifactId>jinput</artifactId>
    <version>2.0.9</version>
</dependency>
<dependency>
    <groupId>net.java.jinput</groupId>
    <artifactId>jinput</artifactId>
    <version>2.0.9</version>
    <classifier>natives-all</classifier>
</dependency>

Need to add the build step

    <plugin>
        <groupId>com.googlecode.mavennatives</groupId>
        <artifactId>maven-nativedependencies-plugin</artifactId>
    </plugin>

And a simple usecase from the official website :

/* Create an event object for the underlying plugin to populate */
Event event = new Event();

/* Get the available controllers */
Controller[] controllers = ControllerEnvironment.getDefaultEnvironment().getControllers();
for (int i = 0; i < controllers.length; i++) {
    /* Remember to poll each one */
    controllers[i].poll();

    /* Get the controllers event queue */
    EventQueue queue = controllers[i].getEventQueue();

    /* For each object in the queue */
    while (queue.getNextEvent(event)) {
        /* Get event component */
        Component comp = event.getComponent();

        /* Process event (your awesome code) */
        ...
    }
}

And a implementation usecase : UI to test JInput entries

Start by inspecting the Maven build configuration and the project's current input or game-loop entry points. Read the JInput documentation and the linked UI example to understand controller polling and event handling. Done means the project includes the required JInput dependencies and native build step, with joystick and gamepad input integrated in a testable use case.