The MadCat torso twists, the view turns with it, and targeting follows.
Three reconstruction fronts closed:
THE ELECTRICAL WATCHDOG CHAIN (why the torso never powered up):
- PowerWatcher::UpdateWatch reconstructed (@004b181c, the REAL registered
Performance -- PTR @0050f5fc; Ghidra missed the fn start): the watchdog
MIRRORS the watched subsystem's electrical level (+0x278), brownout
downgrade when gen output <= minVoltage% x rated. @004b1804 relabeled
ResetToInitialState (slot 10) -- the old "Simulation" tag was wrong.
- The factory watcher-CONNECT pass reconstructed (vtable slot +0x38,
@004aee2c/@004b1a40 byte-identical, recovered from raw exe bytes):
watchedLink.Add(roster[watchedSubsystem]) on the master node. Was the
SubProxy::Start() no-op -- every watchdog sat at 0 forever.
- MinVoltageScale = 0.01 (a 10-byte x87 literal @0x4b1924; was 1.0f =
permanent brownout) and PowerWatcher's Derivation chains its REAL base
HeatWatcher (the HeatableSubsystem stand-in broke IsDerivedFrom for the
whole Torso/Searchlight/ThermalSight family).
- KB correction swept: derivation tag 0x50e604 = HEATWATCHER (not
"HeatSink"); the btl4gaug heat-widget gate now tests it via the
BTIsHeatWatcher bridge.
THE CROSSHAIR (task #58 forensics, 6-agent workflow + live probes):
- The VIEW is TORSO-MOUNTED: jointtorso -> jointeye -> siteeyepoint in
every twist-capable .SKL; the camera + canopy ride the same hinge
subtree through HingeRenderable's live matrix-stack compose -- ALREADY
WORKING in the port. The crosshair stays screen-centered (center IS
the boresight); the twist reads on the tape carets/compass/radar.
- The real bug was the port's gBTAimX = tan(twist) slew (the falsified
"body-mounted view" model): the camera already carried the twist, so
the crosshair counter-slid to hull-forward and the fire ray with it.
Deleted; the pick ray inherits the twist from the yawing eye basis.
- Two instrumentation traps documented (chase-eye-as-default-camera,
BT_FORCE_TORSO clobbering real joints -> the hook now only fills
unresolved ones); an over-correcting explicit eye compose was added on
those false readings and retired the same day.
CONTROLS + REPLICATION:
- Q/E spring-center on release (the axis is a twist-RATE demand; the old
hold-deflection model drifted forever); X also zeroes the axis and
pulses the authentic torso Recenter (@004b6918). M cycles control
mode via the real CycleControlMode body.
- Torso update-record DIRECTION fixed: engine truth is Write=serialize /
Read=apply; @004b6a78 is the READ (was mislabeled Write) and the
missing WRITE @004b6a1c recovered from raw disasm (recordLength 0x1C,
twist/vel/rate at +0x10/14/18) -- kills the replicant's 0xCDCDCDCD
-140-degree ghost twist.
- Marching-ghost desync: 4 Standing-case guards zero stale reverse
cycleSpeed (negative cadence passed the <= ZeroSpeed stop gate).
- Kill credit rerouted to the OBSERVED killer (lastInflictingID ->
killer's player link) -- kills count, target K/D populates.
KB: subsystems.md (watcher chain), multiplayer.md (record direction),
combat-damage.md + gauges-hud.md + cockpit-view.md (torso-mounted view
re-correction), decomp-reference.md (new addresses + tag fix),
open-questions.md (dead capability-roster loops 2-4, snapshot CD read).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Binary census [T1]: mech+0x434 has exactly 2 writers (ctor init + factory
case 0xBD3) and ONE reader (@0x4b984b in MechWeapon::SendDamageMessage
@004b9728) -- pure message-manager semantics, nothing mapper-like. The
factory case now builds the real SubsystemMessageManager (ctor @0049bca4,
0x130, ConsolidateAndSendDamage Performance); the misbuilt MechControlsMapper
squatter is evicted. Every mapper consumer re-pointed to MappingMapper()
(roster slot 0 = the binary's **(mech+0x128); SetMappingSubsystem @0049fe40
touches ONLY slot 0 -- its [0x10d] mirror removed). Non-viewpoint mechs get
a slot-0 demand LATCH (base mapper, [T3] accommodation -- the binary leaves
slot 0 NULL off-viewpoint but never drives/animates those paths; ours does).
Verified: solo drive+gait clean; MP replicant gait through the latch (full
run lifecycle); 3x kill/respawn cycle with type-6 records on the observer.
Remaining (task #7 tail): the messmgr's consolidated TakeDamageStream send +
weapon-path routing (@004b9728 real body).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- Writer transcribed from the recovered disasm; reader rewritten from
part_012.c with every Wword absorber promoted to named engine/port members
(updateOrigin/updateVelocity/projectedOrigin/projectedVelocity/nextUpdate/
lastUpdate + bodyTargetSpeed/latches/alarms). Wire sizes verified live:
0x14/0x20/0x2c/0x78.
- movementMode UNIFIED with Simulation::simulationState (binary mech+0x40 =
StateIndicator@0x2c currentState) -- death/limbo/airborne now replicate in
every record header. Three mislabels of the same binary fns retired:
SetInstanceFlags + RequestActionFlags -> Mech::ForceUpdate (updateModel |=
mask, 0xfe03 disabled filter); IsNetworkCopy -> IsDisabled.
- Senders wired byte-exact: gait transitions Force(8), knockdown Force(1|0x20),
death Force(1|0x40), Reset Force(0x1f) + binary zero-set, perf-loop
deadbands (speed type 2, orientation type 4, heat type 7).
- 2-node verified: types 2/3/4 flow while driving; kill -> type-6 record
(simState=9) -> the OBSERVER's replicant runs the wreck sink loop with no
double death transition; respawn 0x1f burst snaps + un-wrecks the peer;
walking replicant un-regressed (run 12, cycle tracking); solo clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Clean, self-contained extraction of the BattleTech-specific work from the
reverse-engineering workspace -- engine + game + content + build, with nothing
from Red Planet or the raw archive dumps. Builds green (Win32) and runs the
single-player drive->animate->target->fire->damage->destroy loop out of the box.
Layout:
engine/ MUNGA + MUNGA_L4 shared 2007 engine, carrying our BT render/loader
work (bgfload/L4D3D/L4VIDEO: BSL bit-slice decode, LOD/ground/shadow
models) + image codec; the minimal rp/ headers the audio HAL needs
game/ reconstructed BT logic + surviving-original BT source + fwd shims
+ WinMain launcher
content/ full runtime tree (BTL4.RES, VIDEO/, GAUGE/, AUDIO/, eggs, BTDPL.INI)
docs/ format specs + reconstruction ledgers
reference/ raw Ghidra pseudocode (recon source-of-truth) + decomp exporter
tools/ MP console emulator + map/resource scanners
One top-level CMake builds munga_engine lib + bt410_l4 game lib + btl4.exe.
All paths relativized (186 fwd shims + ~437 CMake abs paths -> repo-relative);
DXSDK is the one external, overridable via -DDXSDK. Verified: builds to a
byte-identical 2.27MB exe and runs combat (TARGET DESTROYED, 0 crashes) against
the bundled content.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
