Just a note to anyone who may be getting this error: Unknown World!
VoxelMap is one of my essential mods and I love it, but I'd been having a nagging issue with "Unknown world" errors in chat whenever I'd change worlds. I tried multiple server plugins as suggested in this thread to manage the world names, but no matter how many times I'd chosen the world in the map UI it never saved.
I just found out it's because I was using our world names with colons. Our worlds always follow a naming convention of "Destinos:WorldName" and I was using that convention in VoxelMap.
When I just on a whim, thought to try "Destonos_Worldname" it started working fine So if you're having this problem, try eliminiating :'s (and maybe other special characters?) from your names in VoxelMap.
I'm not sure if this is caused due to caching issues of the mini-map or some incompatibilities with other mods, but I would love to know whether these 1.12.2 issues of the mod could be addressed, so players using it could experience less game crashes
"I let people see how horrendous my code is specifically so it can become less bad." ~ Spirit 2018-10-18
"Never, ever, EVER give a maid a bazooka..." ~ CaerMaster 2018-02-10
"When in doubt read Zsashas' Signature " ~ Vadis365 2016-09-09
"Your post count reflects your uncertainty more than it does your knowledge." ~ Me
Yeah, it seems from moving the cursor that the coordinate display changes corresponding to the area of the map. However, the further zoomed out I am, the more off the coordinates displayed are from the actual world. If I want to get an accurate coordinate set from the world map, I have to zoom all the way in, and even then can be 50-100 meters off from where I am in the world.
When zoomed all the way out, it's wayyyyy off. As an example, I'm currently standing on -340, +250. I hit 'M' for world map and hovered the cursor above my icon. It says I'm at -1150, -242. The numbers change depending on where the map is centered.
Edit - I think I figured out what's going on. In the world map, it's calculating coordinates relative to the top left corner rather than relative to the center. That's why it's more accurate the more zoomed in I am. I just tried zooming all the way in and putting my icon in the top left, and it gave me the correct coordinates when I hovered the cursor over my icon. Does that make sense?
I'm still experiencing this on 1.10.6b for Minecraft 1.16.1, Fabric 0.8.9 build 203, and it makes the world map extremely hard to use. I'm on macOS if that makes a difference. I find it strange that this isn't a more widespread issue. Perhaps it's only affecting macs?