python mudlib using telnetlib3
Jared Miller
8a5ef7b1f6
Implements the opcode set needed for Lost Pig (V8): - op_aread: V5+ input with text at byte 2, char count at byte 1, stores terminating character - op_save_undo/op_restore_undo: stub returning -1/0 (undo not yet available, game continues without it) - op_log_shift/op_art_shift: logical and arithmetic bit shifts - op_scan_table: table search with configurable entry size and word/byte comparison - op_tokenize: re-tokenize text buffer against dictionary - op_copy_table: memory copy/zero with forward/backward support - op_set_font: returns 1 for font 1, 0 for others - op_print_unicode/op_check_unicode: basic Unicode output support Lost Pig now runs to completion: 101K steps, 61 unique opcodes, 3 full input cycles with room descriptions rendering correctly. |
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|---|---|---|
| .claude | ||
| content | ||
| docs | ||
| scripts | ||
| src/mudlib | ||
| tests | ||
| worlds/earth | ||
| .dockerignore | ||
| .gitignore | ||
| compose.yml | ||
| demo_terrain.py | ||
| Dockerfile | ||
| DREAMBOOK.md | ||
| justfile | ||
| mud.tin | ||
| pyproject.toml | ||
| README.md | ||
| uv.lock | ||
mudlib
A telnet MUD engine. No client needed — just telnet and you're in.
Built on telnetlib3, Python 3.12+, managed with uv.
Quickstart
uv sync
just run
Then connect: telnet localhost 6789
Commands
just check # lint + typecheck + test
just run # start the server
just debug # start with debug logging
just render # generate world map HTML
What's in here
src/mudlib/— the engine (commands, world, combat, rendering, storage)tests/— pytest testsworlds/— world definitions (yaml/toml)docs/— internal knowledge baseDREAMBOOK.md— vision and wild ideas
How it works
The world is a toroidal 2D grid of terrain tiles, not discrete rooms. Players see a viewport centered on their position. Terrain types have mechanics — shallow water slows you, mountains block you, forests hide you.
Combat is timing-based with telegraphed moves and cooldown management, not turn-based.
The server runs a tick-based async game loop alongside the telnet server. SQLite handles persistence. Session mode stacks filter what reaches the player depending on context (exploring, fighting, composing, solving puzzles).