Gamepad Support

[jendaz]

Is it possible to add Gamepad support for controllers. It is well documented and I guess quite useful to get interaction for all buttons, touch pad, thumbstick on controllers. https://immersive-web.github.io/webxr-gamepads-module/

PS: It looks like I don't have permission to add label Enhancement

[mrdoob]

How do you think the API should look like?

[jendaz]

I would expect, that you can subscribe to button state change and axes change on controller.gamepad for example. Then in event there will be directly the ThreeButton or ThreeAxes that will have reference to gamepad.

ThreeGamepad can have:

• identifier/type (goController, questController, xbox...)
• hand left, right, null for VR controllers?
• mapping - standard, xr-standard

ThreeButton should contain:

• index: Int - index to XRInputSource.gamepad.buttons
• identifier: string(enum) - primaryTrigger (index 0), primarySqueez (index 1), primaryTouchpad, primaryThumbstick, button5 (index 4)... according to https://immersive-web.github.io/webxr-gamepads-module/#xr-standard-gamepad-mapping. Maybe some other mapping for quest A,B buttons and other controllers. This could be helpfull. Also supporting standard mapping buttons could be interesting: https://www.w3.org/TR/gamepad/#gamepadmappingtype-enum
• standard values: pressed, touched, value
• gamepad: ThreeGamepad ref

ThreeAxes should be remapped to:

• index: int - should correspond to its button -> indexes [0, 1] -> will be 2, [2, 3] -> will be 3
• identifier: string(enum) - same as ThreeButton identifier so for [0, 1] -> primaryTouchpad, [2,3] -> primaryThumbstick
• x: double
• y: double
• gamepad: ThreeGamepad ref

This is just a quick overview that I have in my mind now. I'm not a JS developer, but I would expect interface something like that. What do you thing? Is it interesting for you or someone to work on?