Details:
* A queue object is passed to all renderers, allowing each process to
avoid using shared memory when recording signpost data.
* New overviewer.dat file that stores persistent data between runs.
Currently used to store information on signs. markers.js is
generated by merging the stored POI list with the newly generated POI
list.
* POIs are tagged with their type (e.g. "spawn" or "sign"). This
should be useful if different types of POIs needs to be
handled/displayed differently
Known bugs:
* If you delete the last sign in a chunk, it won't be removed from
markers.js
Other things with direction (torches, ladders, stairs, etc) will be
handled in a similar fashion. Note: minetracks on slopes are still
not rendered correctly
The following textures now no longer render as blocks:
* Flowers
* Mushrooms
* Saplings
* Reeds
* Torches
Note that torches attached to wall are still rendered incorrectly
The spawn point is automatically added to the gmap as a marker.
Adding other markers (signs, mob spawners, etc) should be fairly
easy. Note: the math that converts from in-game block coordinates
to pixel coordinates is iffy. it requires a careful codereview
Andrew Chin