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gauges: publish Mech attribute table (dense prefix 0x15..0x21 -> LinearSpeed live)

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mech.cpp shipped an EMPTY, unchained Mech::AttributeIndex (a default-constructed
AttributeIndexSet passed to DefaultData), so Simulation::GetAttributePointer
severed the whole parent chain -> EVERY bare Mech gauge binding (LinearSpeed /
MaxRunSpeed / DuckState / RadarRange / ...) resolved to NullAttribute.

Add the Mech AttributeID enum (full binary set 0x15..0x38, VA 0x50be84) + a
Mech::AttributePointers[] table + Mech::GetAttributeIndex() chained to
JointedMover::GetAttributeIndex(), and change DefaultData to pass it.

DENSE-TABLE HAZARD (systemic): AttributeIndexSet::Build (SIMULATE.cpp:565) sizes
the built index to max(id) and Find (SIMULATE.cpp:663) strcmps EVERY slot, and
Build does NOT zero gap slots -> an unpublished id between the parent's
NextAttributeID and the max published id holds a garbage entryName -> AV on the
next name lookup.  So the table is a DENSE PREFIX 0x15..0x21 (JointedMover's
NextAttributeID through LinearSpeed): the ids the BLH cockpit doesn't bind
(collision/eyepoint/reticle/footstep/anim-state) point at one shared read-only
attrPad member; CurrentSpeed/MaxRunSpeed bind to the existing gait members
legCycleSpeed/reverseStrideLength; LinearSpeed binds a new linearSpeed member
populated each frame in PerformAndWatch (|adv|/dt = forward ground speed).  Ids
0x22..0x38 stay declared in the enum for later extension (RadarRange/DuckState
when the map/duck widgets land) but are NOT published yet.  New members appended
to Mech's own region (no locked base/gait offset shifts); inited in the ctor.

Verified live (BT_DEV_GAUGES + drive): the radar-surface SPEED readout
(numericSpeed(LinearSpeed), a base engine primitive already drawing NULL) now
shows 225 (~63 u/s in the widget's display units) instead of 0, tracking the
mech's motion.  Heat surface CurrentTemperature=77 un-regressed.  Combat un-
regressed (TARGET DESTROYED after 8 hits), 0 attribute-not-found, and Mech
construction + attribute-index build is heap-clean under BT_HEAPCHECK.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
arcattack
2026-07-06 18:26:58 -05:00
co-authored by Claude Opus 4.8
parent 9ea4bdaf50
commit 9e31408ba2
3 changed files with 109 additions and 4 deletions
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game/reconstructed/mech4.cpp
+2
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@@ -1290,6 +1290,7 @@ void
// leg channel keeps running as the local sim it is in the binary
// (its joint writes land first and are overwritten by the body's).
const Scalar localAdv = adv * dir;
linearSpeed = (localAdv < 0.0f ? -localAdv : localAdv) * invDt; // forward ground speed -> LinearSpeed gauge
Vector3D localVel(0.0f, 0.0f, -localAdv * invDt); // exact frame distance as velocity
Matrix34 orient; // rotation from the heading (set @ line ~626)
Matrix34::FromQuaternion(&orient, &localOrigin.angularPosition);
@@ -1348,6 +1349,7 @@ void
: ((throttle < 0.0f) ? -1.0f : 1.0f);
localOrigin.linearPosition.x += fx * adv * dir;
localOrigin.linearPosition.z += fz * adv * dir;
linearSpeed = (dt > 0.0f) ? ((adv < 0.0f ? -adv : adv) / dt) : 0.0f; // LinearSpeed gauge
localToWorld = localOrigin; // rebuild with the new position
gBodyAnimLog += dt;