Navigate the map with game-like controls | TrackAsia GL JS Docs

Use the keyboard's arrow keys to move around the map with game-like controls.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Navigate the map with game-like controls</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://unpkg.com/trackasia-gl@1.0.5/dist/trackasia-gl.js"></script>
<link href="https://unpkg.com/trackasia-gl@1.0.5/dist/trackasia-gl.css" rel="stylesheet" />
<style>
	body { margin: 0; padding: 0; }
	#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<div id="map"></div>
 
<script>
var map = new trackasiagl.Map({
container: 'map',
style: 'https://maps.track-asia.com/styles/v1/streets.json?key=public_key',
center: {"lat":10.762622,"lng":106.660172},
zoom: 16,
bearing: -12,
pitch: 60,
interactive: false
});
 
// pixels the map pans when the up or down arrow is clicked
var deltaDistance = 100;
 
// degrees the map rotates when the left or right arrow is clicked
var deltaDegrees = 25;
 
function easing(t) {
return t * (2 - t);
}
 
map.on('load', function () {
map.getCanvas().focus();
 
map.getCanvas().addEventListener(
'keydown',
function (e) {
e.preventDefault();
if (e.which === 38) {
// up
map.panBy([0, -deltaDistance], {
easing: easing
});
} else if (e.which === 40) {
// down
map.panBy([0, deltaDistance], {
easing: easing
});
} else if (e.which === 37) {
// left
map.easeTo({
bearing: map.getBearing() - deltaDegrees,
easing: easing
});
} else if (e.which === 39) {
// right
map.easeTo({
bearing: map.getBearing() + deltaDegrees,
easing: easing
});
}
},
true
);
});
</script>
 
</body>
</html>