teleport-poisoned finite difference, not heat, not the reset, not velocity
The one-line fix is the binary's own SECOND Reset instruction, dropped in
transcription: FUN_00408440(mech+0x58c, param_2) ==
accelPrevPos = origin.linearPosition;
+0x58c is the previous-position memory of the AccelerationLastFrame ring feed
(+0x81c/0x824/0x828/0x82c). The port reconstructed the ring faithfully (ctor
part_012.c:9836, derivative :15169) but Reset never re-seeded its cache, so the
first post-respawn sample computed |newPos - prevPos|/dt = TELEPORT DISTANCE/dt
(~1e5) into the velocity ring; the ring-mean derivative spiked
AccelerationLastFrame (pure forward, with an opposite-sign echo ~15 frames later
as the sample rotated out of the 15-ring); and the myomer integrator @004b8d18
turned it into a one-tick pendingHeat deposit of ~3e9:
termAccel = (1-accEff) * |v| * |a| * m * dt
= 0.2 * 40 * 1.04e5 * 75000 * 0.044 = 2.75e9
snapping the freshly-reset myomers from T=77 to T~9000 against failT=2000 ->
speedEffect 0 -> speedDemand *= 0 -> "respawned unable to move until it cools".
WHY ~8% IN THE FIELD: the deposit needs |v| in the same 1-2 frames, so only
pilots whose throttle was still forward at the respawn -- physical lever /
HOTAS, exactly who reported it -- had gait-republished speed in the spike
frames. Idle-throttle respawns deposit ~nothing. (And frozen-subset-of-
died-hot: died hot == was running hard == lever still forward.)
MEASURED, same abusive bench (0.95 throttle + continuous autofire):
before: deposits up to 3.35e9, every one 3-4 lines after a Mech::Reset;
4-6 of 7 respawns frozen; post-reset myomers T 7700-12100
after: deposits >1e7: ZERO across 7 respawns; frozen: ZERO;
post-reset myomers T 77-178 (vs degradeT=1000)
THEORIES KILLED ON THE WAY, each by operand data, in order:
* stale pendingHeat carryover (bounded to 1 frame, +1.2K -- gates agent)
* slow accumulation during the death window (consumers tick the wreck)
* conduction from a hot neighbour (roster-wide snapshot: ALL partners 77;
flow trap: zero e6 flows into the myomers, ever)
* drag/impulse writers (both trapped: never fired)
* my own earlier "velocity-driven, players accelerate to top speed" close of
the ticket -- arithmetically impossible (input ceiling ~6.5e5/frame ~=
60 deg/s; the observed snap was 1,100-21,000 deg/s) and corrected in
context/subsystems.md, which carried the wrong paragraph.
* the localAcceleration zero-fill (+0x1dc) restored along the way is KEPT --
the binary does it -- but it was NOT the cause; the snapshot is rebuilt
from the position difference one frame later.
Probes kept (all BT_HEAT_LOG-gated): roster-wide [myofreeze] at-death/at-reset/
post-reset (T + heatEnergy + pendingHeat per subsystem), the [heatflow]
conduction trap with full operands, the [myodep] deposit trap with mech
identity + acceleration components. Engine MOVER.cpp traps reverted -- they
proved their negative (drag/impulse innocent) and do not belong in engine
source.
Gotcha #30 records the class: when the binary's Reset writes a cell you don't
recognize, that write IS the spec -- transcribe the whole zero/seed list; any
prev-value cell backing a finite difference must be re-seeded at every
teleport; and derived state (T) sampled at the reset proves nothing about the
backing producers.
The operator called the shape of this two days ago: "maybe the math gets screwy
in respawning while some systems are ticking while values are being reset."
That is precisely what it was.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018SgmXGNMXavXiafKXf9MDC
