# Maps for Jet Lag: The Game

## Useful things to know

### Overpass Turbo

https://overpass-turbo.eu/

Can be used to query literally any kind of thing from OpenStreetMaps.
The wizard can be used to generate API queries in a human-readable-ish way.
e.g. you can search for `"Railway Route" in italy` and it'll make a query for you.

Sometimes the queries miss stuff. The above query won't actually get all the train routes.

If you see that your query misses someting (e.g. a railway), you can go to https://www.openstreetmap.org, find that railway, and inspect it to see what you can search for. 

### Map base layer

You can use Carto as a base layer in QGIS.
`Web` -> `QuickMapServices` -> `Carto` -> `Positron`

### Masking the map

Use the `Mask` plugin.

Select a polygon using the `Select Features by Area or Single Click` tool in the toolbar.
Set it as the mask in the plugin menu.

You can combine different polygons using e.g. `Vector` -> `Geoprocessing Tools` -> `Clip`