How to map an Android keycode to a Unity keycode?-CodePudding

I am trying to get the touchpad of the Vizux M400 to work in Unity. The Vuzix runs on Android and I know that for example a touchpad swipe forward is handled with the android keycode KEYCODE_DPAD_RIGHT (22).

How do I map this keycode now to a keycode in Unity, so that I have access to it? I heard that I might need to create a plugin for that, but I have no idea where to start creating such a plugin. (Side info: Tapping on the touchscreen is received as Mouse0 in Unity, but tapping with 2 fingers is not recognized. So I guess these are not mapped on default)

Any help is appreciated, thank you already!

CodePudding user response：

I don't have the device, so it is difficult for me to test. Generally, you can check the KeyCode of any recognizable device using the following.

// Put this in Update OR OnGUI
if (Input.anyKeyDown)
{
    Event e = Event.current;
    if (e.isKey)
    {
        Debug.Log(e.keycode.ToString())
    }
}

After finding the keycode, use the following code for checking the state:

KeyCode KEYCODE_DPAD_RIGHT = (KeyCode)(<insert your found keycode>)
if (SystemInfo.deviceModel.ToLower().Contains("vuzix"))
{
    if (Input.GetKeyDown(KEYCODE_DPAD_RIGHT))
    {
        // Do anything
    }
}

Edit 1

I believe you can get this to work by explicitly telling Unity to check the different KeyCodes:

for (int i = 0; i < 1000; i  )
    if (Input.GetKeyDown((KeyCode)i)))
    {
        Debug.Log("Working");
        break;
    }
}

Edit 2

Run this code in Update and spam clicking your buttons and swiping/touching actions. You may get a prompt that shows that the action is recognized, and you may confirm that the actions are actually mapped by default to some of the keycodes.

CodePudding user response：

The solution simply was to deactivate the mouse feature of the Vuzix M400s touchpad. It can be done in the devices settings.

So, these are the KeyCodes for the touchpad:

    private const KeyCode _oneFingerTapKeyCode = (KeyCode)330;
    private const KeyCode _oneFingerHoldKeyCode = (KeyCode)319;
    private const KeyCode _oneFingerSwipeBackKeyCode = (KeyCode)276;
    private const KeyCode _oneFingerSwipeForwardKeyCode = (KeyCode)275;
    private const KeyCode _oneFingerSwipeUpKeyCode = (KeyCode)273;
    private const KeyCode _oneFingerSwipeDownKeyCode = (KeyCode)274;
    private const KeyCode _twoFingerTapKeyCode = (KeyCode)27;
    private const KeyCode _twoFingerHoldKeyCode = (KeyCode)278;
    private const KeyCode _twoFingerSwipeForwardKeyCode = (KeyCode)127;
    private const KeyCode _twoFingerSwipeBackKeyCode = (KeyCode)8;

I have seen them somewhere in a different thread already, but I thought that they did not work, but it was just the mouse input.