example of jumping (tested on desktop only, assuming ground at 0)

index.html

@@ -3005,6 +3005,10 @@ AFRAME.registerComponent('collision-check', {
   }
 });
 
+function jump(){
+	document.getElementById("rig").emit(`jump`, null, false)
+}
+
 // used for testing
 AFRAME.registerComponent('startfunctions', {
   init: function () {
@@ -3040,7 +3044,7 @@ AFRAME.registerComponent('startfunctions', {
 	      </template>
       </a-assets>
 
-      <a-entity id="rig">
+      <a-entity id="rig" animation="property: position.y; to: 0.4; dir: alternate; loop:1; startEvents:jump; dur: 400">
 		<a-sound src="../content/street-crowd-ambience.mp3" autoplay=true loop=true volume=0.2></a-sound><!-- warning skipped on Quest, does autoplay there -->
 		<a-sound id="snapping-sound" src="url(../content/magnets_snap.mp3)"></a-sound>
 		<a-entity id="player" networked="template:#avatar-template;attachTemplateToLocal:false;"