A reimplementation of some of the datastructures used in the minecraft mod.
Modrinth: https://modrinth.com/mod/distanthorizons
Source: https://gitlab.com/distant-horizons-team/distant-horizons
- Load DH data from sqlite database
- Decompress section data (lzma2 supported, lz4 still missing)
- Display LoDs of selected detail level (currently hardcoded)
- Display blocks as they would in a minecraft map
- Nether detection, which hides the nether roof
- Move and zoom around the map
- UI to select world and dimension
- Select detail level based on zoom
- Show beacon marker
- Debug overlay (loading/decompression status, available detail levels)
- Mouse support (Drag'n'drop the map, wheel to zoom)
- L: load the map (path read from DH_PATH env variable)
- WASD: move around
- +/-: zoom
- ESC/Q: exit
We're playing with JJThunder To The Max which amplifies the terrain a lot and without DH we could only see slivers of our world. This screenshot is more than 10.000 blocks wide and still only contains a beach area, the obvious river and the beginning of a mountain range.
The detail level is set to 8 (DetailLevel::Chunk16, a section is 16 chunks wide), which makes each pixel 4x4 blocks.
At first this started as a way to verify that an external tool used to merge database files from different players or machines wouldn't corrupt the data. After implementation of the loading was done I was searching for a way to visualize the data, but just rendering squares was more complicated than anticipated, so I switched to bevy, which is a full game engine. The rendering performance was good enough for data verification but I saw a lot of potential, so I improved it a lot by rendering each section as an image, which reduced the entity (every element in bevy is an entity) count by 64*64=4096. Since the fps was now at or above my monitor refresh rate, I implemented zooming and moving the camera. To watch it while playing at the same time without needing to copy the database and restarting the visualizer every time, I implemented reloading. I was relieved when I noticed DH handled a second process accessing the sqlite file at the same time without any problems.
One of the next goals would be to render different detail levels based on the current zoom.
Thanks to all the developers and their work put into DH <3. Your mod is truly awesome and makes a lot of us play minecraft again to view it in whole new perspective.