Question New Input System: Detect Touchpad click North/South (WMR/ Vive)

I am trying out the new input system and wanted to track when the touchpad (WMR controller and Vive controller) is clicked North and South in order to activate Teleportation.
I used the example project of the XR Toolkit as a guideline, where the teleport behavior was mapped to the Primary2DAxis. The example uses an action of type Button and a binding to the Primary2DAxis with the Interaction "Sector".

I thought all I need to do is adding the Interaction "Press" and use the "Press Only" state in order to get the Teleport started when I press the Touchpad North or South, but it does not work.
How can I get a teleport behavior like in the SteamVR Home application, where I need to click the Touchpad North/South in order to start teleporting and release the click to teleport?

 

Hi, I'm using my vive controllers and I just noticed that the default input actions work fine for the primary2DAxis (turn/sector west-east, teleport/sector north). However, that's not the case when I try to bind the primary2DAxisClick for those actions.

The XR input debugger indicates primary2DAxisClick (true) when pressed. I've created new actions using several action types and paths each time (e.g. button, vector 2, <XRController>{RightHand}/Primary2DAxisClick, etc), but nothing seems to work. I would really like to turn and teleport by clicking (not touching) the trackpad on my vive controllers. Has anyone resolved this using the new input system? I'm on unity 2020.3.

 

Hi Chris, thanks for the quick response. Sadly, that approach did not work out. I did create a button (Primary2DAxisClick) with one modifier composite (Primary2DAxis) as you mentioned. However, the "snap turn provider action-based script (default)" associated with the locomotion system was only set to read Vector2 values. Therefore when implementing, the console displays an error message. If I'm not missing something else (as I'm new to the new input system), I might have to tweak a little these scripts (action turn provider and turn provider base) to read vector2 and boolean values. I hope you could tell me if I'm on the right track.

 

Did anyone end up getting this to work? When I try to make a custom composite, it just doesn't show up in the input actions UI.

 

Kind of. To solve this I used 3 actions. A touchpad click action for detecting when the touchpad is clicked down (primary2DAxisClick with a press and release interaction), a basic touchpad action for detecting where the touchpad was currently being touched (Primary2DAxis with no interactions), and another touchpad action for detecting when the touchpad is released, because the action system is dumb and doesn't let you combine these 2 (Primary2DAxis with a release interaction).

When processing the 2nd action, I just copied Unity's code for determining which sector you're in

Code (CSharp):

1. var angle = Mathf.Atan2(value.y, value.x) * Mathf.Rad2Deg;
2.         var absAngle = Mathf.Abs(angle);
3.         if (absAngle < 45f)
4.             return SectorEnum.EAST;
5.         if (absAngle > 135f)
6.             return SectorEnum.WEST;
7.         return angle >= 0f ? SectorEnum.NORTH : SectorEnum.SOUTH;

Save that result to a var and set it to none on release. Then when processing the click, refer to the current sector to determine which click action to do.

 

Going off the documentation, I'm trying to get the trackpad position on a Vive controller when its pressed, but receiving InvalidOperationException.

Code (CSharp):

1.     private InputAction trackPadAction;
2.  
3.     private void Awake()
4.     {
5.         trackPadAction = new InputAction();
6.         trackPadAction.AddCompositeBinding( "TrackPadPressed" )
7.             .With( "Binding", "<XRController>*/primary2DAxis" )
8.             .With( "Modifier", "<XRController>*/trackPadClicked" );
9.         trackPadAction.performed += ( context ) => Debug.Log( $"{context.ReadValue<Vector2>()}" );
10.     }
11.