This is an example implementation of a treasure hunt game in Dart. It is meant for educational purposes to learn programming in Dart.

You can try the following example application in your browser:

Treasure Hunt Demo

• Predefined treasure destinations (in latitude and longitude). User can choose a destination.
• Uses HTML5 Geolocation API (GPS, etc.) to get the position of the user.
• Calculates distance between user and destination.
• Displays a compass to indicate the direction of the destination.
• If supported by the device, the compass is turned to always face the magnetic north.
• When close enough (e.g. 30m) to the destination, a message and an imaage is displayed.

The treasure hunt app could easily be changed into various other scenarios:

• A Geocaching client.
• A Scavenger Hunt.

• In iOS Safari the compass points in an arbitrary direction. North will point in the direction the device is facing when the app was loaded. This will be resolved when [Dart Issue 19119](is fixed).

• An Introduction to the Geolocation API
• An Introduction to the Device Orientation API