Tiled map support

[zackthehuman]

It's just too much work to build a custom map editor. Tiled works just as well, or even better, and you can just write some scripts to convert the XML output into nice JSON. This issue should be used to track tooling for the map conversion.

You can probably save each room as a separate map file, and then put all the rooms together by reading in the files and merging their JSON together with a simple node JavaScript process.

[zackthehuman]

Reconsidering this. The map editor (uchuu-web) might already be good enough.