UO Rust Libs 
This library contains various modules for reading and writing pre-UOP Ultima Online data files, written in Rust.
This library is still pre-1.0 (although is stabilising), so the API may shift underfoot while you're working with it.
By default, the library contains helper methods for converting to Image types. Import it with default-features = false if you don't need this for your use-case.
This has been tested on a fresh install of Ultima Online: Age of Shadows, but should support clients up to Mondain's Legacy.
Supported files
There are currently readers for the following filetypes:
- anim.mul/anim.idx (and successive files) - Animated characters
- art.mul/art.idx - Tiles and static art
- fonts.mul - Fonts
- gumpart.mul/gumpidx.mul - GUI elements
- hues.mul - Palette swap colours
- map[n].mul - World maps
- mapdif[n].mul/mapdifl[n].mul - Patches for world maps
- radarcol.mul - Color lookup table for map and static tiles
- skills.mul/skills.idx - Skill names
- stadif[n].mul/stadifl[n].mul/stadifi[n].mul - Patches for static locations
- statics[n].mul - Static locations
- texmaps.mul/texidx.mul - 3D texture maps
- tiledata.mul - Information about tiles and statics
Features yet to be added
- sound.mul/soundidx.mul support
- animdata.mul/animinfo.mul
- palette.mul
- skillgrp.mul
- unifont.mul
- speech.mul
- multi.mul/multi.idx
- Converting from images to UO assets/Writing muls back to files
- A built-in viewer application