xmatic/pepa-pi-bot
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

fix(runtime): pin MC_VERSION=1.21.4 + ground-truth probe + close-loop dig

Browse Source 
Two-pronged response to user-confirmed "bot stands still, doesn't actually
chop" on play.xmatic.team:

1. Pin protocol — .env now sets MC_VERSION=1.21.4. minecraft-data has
   wrong packet ID mappings for protocol 775 (server 26.1.2 via
   ViaBackwards 5.9.1) — see mineflayer#3888 and #3717. 1.21.5 also has
   an enchants decoder bug that breaks bot.dig. 1.21.4 is the last
   protocol mineflayer 4.37.1 can speak cleanly through VIA.

2. Don't trust dig success — runtime/actions.js chopNearestTree and
   runtime/skills/gather-stone.js now lookAt(face center)+forceLook,
   await collectBlock, then re-read the target block. If the log/stone
   is STILL there, return ok:false code:"silent_dig_failure" and
   blacklist the position. Prevents the curriculum from reporting
   "wood.16 in progress" while the world hasn't actually changed.

3. Defensive default — runtime/movement-profiles.js: canDig=false on
   every profile until dig is confirmed working live. Otherwise
   pathfinder schedules paths through must-dig blocks and the bot loops.

4. Ground-truth probe — runtime/skills/diagnose-physics.js dispatches
   forward/jump/dig probes and writes the result to the diary. New
   IPC command cmd:run-skill lets the operator (or a future curriculum
   trigger) fire any skill on demand; it waits for the current action
   to finish before dispatching. /tmp/pepa-runskill.mjs is a one-shot
   client.

Live probe on play.xmatic.team confirmed: forward Δ=0.003 over 2s
(BROKEN — server rejects movement packets), jump ΔY=0.42 (likely
physics jitter, not a real jump). Strongly suggests an anti-cheat
plugin gating bot-style movements server-side — beyond protocol pin.

npm test 124/124.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
mayatnikov
2026-05-26 11:51:43 +03:00
co-authored by Claude Opus 4.7
parent 19dc8e12c6
commit 86f0c1799e
9 changed files with 232 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files
runtime/compat.test.js
+8 -4
View File
@@ -13,16 +13,20 @@ import { isManMadeBlockName, classifyArea, shouldAvoid } from "./claim-avoidance
// We can't import owned-blocks.js until config-driven stateDir exists,
// so it's tested via an isolated import in a temp dir below.
test("movement profile descriptor: gather has canDig=true, canPlace=false", () => {
// 2026-05-26: canDig is FALSE on every profile because bot.dig silently
// fails on the live server (mineflayer #3888 / protocol 775). Once the
// 1.21.4 pin restores real digging, gather/travel/flee profiles can flip
// canDig back to true.
test("movement profile descriptor: gather has canDig=false (silent-dig safeguard)", () => {
const d = describeProfile(PROFILES.GATHER);
assert.equal(d.canDig, true);
assert.equal(d.canDig, false);
assert.equal(d.canPlace, false);
assert.equal(d.allow1by1towers, false);
});
test("movement profile descriptor: flee allows higher drop, still canDig=true", () => {
test("movement profile descriptor: flee allows higher drop, canDig=false", () => {
const d = describeProfile(PROFILES.FLEE);
assert.equal(d.canDig, true);
assert.equal(d.canDig, false);
assert.equal(d.maxDropDown, 8);
});