Text Ticker - Start ticker on "In" animation

(function() {

  return {

    init: function(comp, context) {
      console.log("Initialize Composition script " + comp.name);

      // we get the Text Ticker widget object
      const wiTextTicker = comp.findWidget("Text Ticker")[0];

      /**********************************************************************/

      // we listen to timeline events
      comp.addListener('timeline_event', (event, msg, e) => {
        // quick exit if a child composition propagated the event
        if (msg.compositionId != comp.id) return;

        const m = msg.message;
        // we reset and set the Text Ticker's speed on the "In" animation start
        if (m.event == "start" && m.targetState == "In") {
          const p = comp.getPayload2();
          // we remember the current ticker speed
          const speed = wiTextTicker.getPayload()["speed"];
          // we reset the speed and the message text
          wiTextTicker.setPayload({
            "speed": 0
          });
          // we set the ticker speed and update messages
          wiTextTicker.setPayload({
            "speed": speed,
            "text": p["Messages"]
          });
        }

        e.stopPropagation();
      });

      /**********************************************************************/

      // we listen to payload / control node changes
      comp.addListener('payload_changed', (event, msg, e) => {
        // quick exit if a child composition propagated the event
        if (msg.compositionId != comp.id) return;

        const p = comp.getPayload2();
        wiTextTicker.setPayload({
          "text": p["Messages"]
        });

        e.stopPropagation();
      });

    },

    close: function(comp, context) {
      console.log("Close Composition script " + comp.name);
    }
  };
})();