Check out the demo application or open the demo in the browser
Install the module using using the standard devkit install process:
devkit install https://github.com/gameclosure/geoloc#v2.0.0
The geolocation module works differently than most modules - importing it
adds the geolocation function to the navigator object for any
platform that does not have it (mobile devices). All you need to do is import
the module, then access navigator.geolocation as if you were in
a browser.
At the top of your game's src/Application.js:
import geoloc;
Now you can use the normal HTML5 navigator.geolocation.getCurrentPosition API:
navigator.geolocation.getCurrentPosition(bind(this, function(pos) {
var lat = pos.coords.latitude;
var lng = pos.coords.longitude;
var acc = pos.coords.accuracy;
logger.log("geolocation",
"lat", lat,
"lng", lng,
"acc", acc
);
}), bind(this, function(err) {
logger.log("FAIL:", err.code);
}), {
'enableHighAccuracy': true
});
This gives you lat, long and accuracy. Accuracy is in meters.
To enable higher-accuracy location like GPS, be sure to pass 'enableHighAccuracy': true as an option.
Does not seem to work for file:// paths, so you will want to test it in the basil serve mode to see it working.
On Chrome you will want to add the localhost:9200 "domain" to the geolocation permitted groups. There will be a new icon on the right of the navigator bar you can interact with to add it.
On other browsers it will work the same as the normal HTML5 geolocation API.
The GPS subsystem will be enabled by a popup that the user must accept.
Requests until they accept the popup will fail.
The GPS subsystem is often manually turned off to save battery, so the user will be prompted to switch to the Settings app to enable GPS for use in your app. If they tap the OK button it will take them right to that settings pane. Pressing the back button will take them directly back to your game.
Until the network/GPS location provider warms up you will receive the last known position of the device. Requesting the position repeatedly over time will improve accuracy.
The location requests are canceled when the user places your app in the background, to conserve battery.