In all the demos in the readme that can spawn entities, is it only possible to control the spawn using the space bar on a PC keyboard?
I tried using the WebXR Device Emulator and Immersive Web Emulator browser extensions to simulate VR gamepad button to spawn entities in the demos, but it didn't work. I also tested with an actual device (PICO), and it didn't work either.

I noticed the listener code in spawner.component.js:

AFRAME.registerComponent('spawner', {
  schema: {
    template: { default: '' },
    keyCode: { default: 32 }
  },

  init: function() {
    this.onKeyUp = this.onKeyUp.bind(this);
    document.addEventListener("keyup", this.onKeyUp);
  },

Does this mean that I can only spawn entities using the space bar in demo?