Reverse-engineered the vehicleSubSystems config primitive end to end (Ghidra
headless, all ~28 functions). It is NOT a widget: it is the engineering-screen
(MFD) subsystem-panel system. Its Make (FUN_004cbaf0) is a per-subsystem factory
that builds a SubsystemCluster-family status panel onto one of 12 auxiliary MFD
positions, dispatching on subsystem classID (HeatSink/Myomer/Energy/Ballistic
clusters). The whole cluster family (base + 5 subclasses) + 4 btl4gau2 sub-gauges
(CoolingLoop/PowerSource/ScalarBarGauge/ConfigMapGauge) are declared in btl4gau2.hpp
but not reconstructed.
BLOCKER: the Make reads base subsystem fields subsystem[0x1dc] (aux-screen position),
[0x1e4]/[0x1e0]/[0x224] that our MechSubsystem reconstruction (ends 0x114) does not
have or populate -- so the panels render nothing until the core subsystem layout is
extended + populated from the resource parse, which touches the working combat/heat
subsystem code (regression risk). Checkpointed at full spec pending go/no-go on the
large core-touching implementation.
- docs/VEHICLE_SUBSYSTEMS.md: complete reconstruction spec (dispatch table, geometry
table, class family map, sub-gauge inventory, engine-primitive reuse, the blocker,
the Phase-1/Phase-2 plan).
- reference/ghidra_scripts/DecompVSS.java: headless address-list decompiler (reusable
for any function the assert-anchored exporter skipped).
- CLAUDE.md: record the finding in the gauge-widget notes.
Co-Authored-By: Claude Opus 4.8 (1M context) <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>
