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Gauges: convert generator-voltage bar to named-member bridge

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The eng-page generator-voltage bar (evolt.pcc, ScalarBarGauge @004c721c) and
the MyomerCluster seek-voltage graph were fed by GeneratorVoltageConnection,
which walked the same dead path as the generator-letter lamp:
ResolveLink(AttributePointerOf(subsystem,"InputVoltage")) -> read resolved
+0x1DC == Generator::outputVoltage. The BT_DEV_GAUGES audio attribute rows
shifted the chained attribute ids so AttributePointerOf no longer lands on
voltageSource@0x1D0 -> the bar always read 0.

New BTGeneratorVoltage(subsystem) bridge (powersub.cpp) reads the NAMED member
via PoweredSubsystem::ResolveVoltageSource()->Generator::MeasuredVoltage()
(outputVoltage@0x1DC), bypassing the attribute table -- same pattern as
BTPowerSourceFrame/BTCoolingLoopFrame. Both GeneratorVoltageConnection callers
(the ScalarBarGauge param + the MyomerCluster seekValue) now pass subsystem_in.

[voltfeed]-verified: Myomers -> 10000V from GeneratorD (was 0 on the dead
path). Both pod + glass builds clean. Eng-page render awaiting live playtest.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
arcattack
2026-07-21 00:21:41 -05:00
co-authored by Claude Opus 4.8
parent 8c7ff639de
commit f2eaf3d0ac
3 changed files with 63 additions and 12 deletions
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game/reconstructed/powersub.cpp
+38
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@@ -716,6 +716,44 @@ int BTPowerSourceFrame(void *subsystem_v)
return frame;
}
//
// BTGeneratorVoltage -- complete-type bridge for the GeneratorVoltageConnection
// (@004c3288), which drives the eng-page generator-voltage bar (evolt.pcc,
// ScalarBarGauge @004c721c) and the MyomerCluster seek-voltage graph. The
// binary resolved the subsystem's InputVoltage link and read resolved+0x1DC ==
// Generator::outputVoltage (0..12000, == MeasuredVoltage()). Same databinding
// trap as BTPowerSourceFrame: the port's ResolveLink(AttributePointerOf(...,
// "InputVoltage")) path is dead after the BT_DEV_GAUGES audio attribute rows
// shifted the chained ids, so the bar read 0. This reads the NAMED member via
// PoweredSubsystem::ResolveVoltageSource(), bypassing the attribute table.
//
Scalar BTGeneratorVoltage(void *subsystem_v)
{
static int s_log = -1;
if (s_log < 0) s_log = getenv("BT_LOOP_LOG") ? 1 : 0;
static int s_n = 0;
int trace = s_log && (s_n++ < 40);
Subsystem *sub = (Subsystem *)subsystem_v;
if (sub == 0 || !sub->IsDerivedFrom(*PoweredSubsystem::GetClassDerivations()))
{
if (trace) DEBUG_STREAM << "[voltfeed] " << (sub ? sub->GetName() : "(null)")
<< " -> 0 (not a PoweredSubsystem)\n" << std::flush;
return 0.0f;
}
Generator *gen = (Generator *)((PoweredSubsystem *)sub)->ResolveVoltageSource();
if (gen == 0 || gen->GetClassID() != RegisteredClass::GeneratorClassID)
{
if (trace) DEBUG_STREAM << "[voltfeed] " << sub->GetName()
<< " -> 0 (no Generator)\n" << std::flush;
return 0.0f;
}
Scalar volts = gen->MeasuredVoltage(); // outputVoltage @0x1DC
if (trace) DEBUG_STREAM << "[voltfeed] " << sub->GetName() << " -> " << volts
<< "V (generator '" << gen->GetName() << "')\n" << std::flush;
return volts;
}
//#############################################################################
// Voltage-source linkage helpers