arcattackandClaude Fable 5
77190c93e5
ConsolidateAndSendDamage @0049b784 fully implemented: the beam path submits
into AddDamageMessage; each messmgr tick builds ONE Entity::
TakeDamageStreamMessage (id 0x13; wire-verified 0x34+4+Nx12) with the
common impact record + appended {type, amount, subsystemID} entries and
Dispatches it at the victim -- the T0 handler (ENTITY.cpp:817) re-splits
into per-record TakeDamage; replicants reroute cross-pod. Real
ResolveExplosionID (firing weapon's +0x3E4, guarded) + SubmitExplosion via
the Explosion::Make port; TWO chain-purge bugs fixed (the "iterator dtor
clears it" assumption was wrong -- records re-applied every tick, observed
1->2->3->4 double-counting). @004b9728 identity corrected (SendDamageMessage,
not DrawWeaponPip). Verified solo: 25 clean single-record consolidations ->
kill -> death transition. Residue: weapon-side submission awaits the
damage-economy reconciliation (authored 0.25-scale vs kShotDamage=12).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
75 lines
5.0 KiB
Markdown
75 lines
5.0 KiB
Markdown
---
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id: subsystems
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title: "Subsystems — the factory + the reconstruction waves"
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status: established
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source_sections: "PROGRESS_LOG.md §10d; docs/SUBSYS_PLAN.md; docs/VEHICLE_SUBSYSTEMS.md; docs/RESOURCE_AUDIT.md"
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related_topics: [decomp-reference, reconstruction-gotchas, combat-damage, gauges-hud]
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key_terms: [subsystem, factory, ClassID, subsystem-roster, PoweredSubsystem, bridge]
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open_questions:
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- "Myomers coupling (gates on owning-player @mech+0x190); 0xBD3 damage-hub untangle (WAVE 8)"
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---
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# Subsystems
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The mech's components (heat/power/weapons/sensor/gyro/torso/myomers/…), built by the Mech-ctor
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factory. Full per-family plan: `docs/SUBSYS_PLAN.md`; the engineering-cluster panels:
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`docs/VEHICLE_SUBSYSTEMS.md`; the layout audit: `docs/RESOURCE_AUDIT.md`. ClassID map:
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[[decomp-reference]] §2.
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## The factory
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The Mech ctor switches on the resource ClassID to build each subsystem into the [[subsystem-roster]]
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(`subsystemArray@0x128`). **The `case <Name>ClassID` LABELS are systematically MISLABELED** — the
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real class is the `// FUN_004xxxxx` ctor-address comment reconciled via `CLASSMAP.md`, not the case
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name (e.g. 0xBBE case="Sensor" is actually AggregateHeatSink). Each real class is wired via a
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`Create<Class>Subsystem(Mech*,int,void*)` **bridge** in the class's own `.cpp` (do NOT `#include` the
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real subsystem headers into mech.cpp — the local stubs collide). Keep the alloc SIZE + special-cache.
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[T2]
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## Class hierarchy (two branches, shared only at MechSubsystem)
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- **Heat leaf:** `PoweredSubsystem : HeatSink : HeatableSubsystem : MechSubsystem`. Emitter/PPC/
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Sensor/Myomers/ProjectileWeapon/MissileLauncher/GaussRifle chain here. Uses 0xC `SubsystemConnection`
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+ 0x54 `GaugeAlarm54` (alarm level at +0x14). [T1]
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- **Watcher branch:** `Torso/Gyroscope/Searchlight/ThermalSight/HUD : PowerWatcher : HeatWatcher :
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MechSubsystem`; `AmmoBin : HeatWatcher`. Uses a 0xC `WatchedConnection` + 0x54 `WatcherGaugeAlarm`. [T1]
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Making a base byte-exact GROWS every subclass — they must be re-based TOGETHER in one build, each
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`static_assert`-locked (the P7 alarm-unification: HeatSink 0x1D0 → PoweredSubsystem 0x31C → MechWeapon
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0x3F0 → Emitter 0x478). [T2]
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## Reconstruction waves (state: ALL 20 factory cases wired to real classes — 0xBD3 = the real SubsystemMessageManager since task #7, 2026-07-11; the mapper lives in roster slot 0)
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- **WAVE 1** — HeatableSubsystem re-based onto MechSubsystem (de-shadow cascade).
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- **WAVE 2** — heat family (Condenser/AggregateHeatSink/Reservoir) + HUD + MechTech (un-swap).
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- **WAVE 3** — power bus (Generator/PoweredSubsystem) + Emitter/PPC fire-path (end-to-end fire; heat
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conducts to the central sink via the linked-sink roster).
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- **WAVE 4** — standalone readouts: Sensor/Searchlight/ThermalSight/AmmoBin (de-shim, gate fixes).
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- **WAVE 5** — Torso (aim twist/elevation; joint-I/O reconstructed; the BLH record disables torso →
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faithfully no visible twist).
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- **WAVE 6** — Myomers (mover-coupled; structural un-stub is INERT — no live mover/heat coupling).
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- **WAVE 7** — projectile/missile weapons (byte-exact; flying projectiles are a PORT reconstruction —
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the 2007 Entity is 0x1BC vs the binary's 0x300, so raw base-offset reads fail).
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- **TASK #56 (2026-07-11)** — Gyroscope LIVE byte-exact (ctor @004b3778, sizeof 0x3D0 locked;
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integrators + `FUN_004b2980` damage fan-out; joint dispatch from the Mech performance tail
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@0x4aaf74/83; `BT_GYRO_LOG`/`BT_GYRO_TRACE`) — see [[cockpit-view]].
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- **DEFERRED** — SubsystemMessageManager 0xBD3 (WAVE 8 — a
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**damage/explosion consolidation hub** cached to `Mech[0x10d]`=0x434; recon MISLABELS the slot
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`controlsMapper` + the drive squats there while the real mapper is roster slot 0, so wiring it needs
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an untangle. NOT the valve/advanced-damage gate — that's the owning **BTPlayer** @mech+0x190, see
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[[combat-damage]]/[[open-questions]]). [T2]
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## The four systemic checks (every subsystem)
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See [[reconstruction-gotchas]]: (1) shadowing (re-declared engine-base fields), (2) the `Wword` trap,
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(3) message-handler chaining, (4) entity validity. Plus resource-struct layout (must mirror the class
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hierarchy, byte-exact — the RESOURCE_AUDIT found 8 bugs) and object-layout (alias/phantom/interior
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fields). A `+0x128`-style owner offset is the ROSTER, not the segment table (the heat-link type
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confusion that caused a heap-corruption via OOB `ConductHeat` writes). [T2]
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## Engineering cluster panels (`vehicleSubSystems`)
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Not a widget — a per-subsystem FACTORY (`FUN_004cbaf0`) building a status CLUSTER onto one of 12 aux
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MFD positions, dispatching on classID → HeatSinkCluster/MyomerCluster/EnergyWeaponCluster/
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BallisticWeaponCluster. Reads `PoweredSubsystem::auxScreenNumber/Placement/Label` (res +0x104/8/C) via
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the `BTGetSubsystemAuxScreen` bridge. See `docs/VEHICLE_SUBSYSTEMS.md` + [[gauges-hud]]. [T2]
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## Key Relationships
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- Data: [[decomp-reference]] (ClassIDs/hierarchy). Bugs: [[reconstruction-gotchas]].
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- Feeds: [[combat-damage]] (weapons/damage), [[gauges-hud]] (attribute state).
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- Plan: `docs/SUBSYS_PLAN.md`.
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