SeekVoltageGraph: full reconstruction -- the eng-page POWER graph + top-box eraser (Gitea #11)
The #10 audit's one WRONG: the port Execute was a bring-up no-op, so the emitter/myomer engineering pages never erased their top data box -> stale sibling-page ghosts on the shared Eng bit-plane (SYSTEM 10 PPC showing the Streak ammo box, etc). Full faithful widget landed: - btl4gau2: ctor/BecameActive/Execute/clear/ticks/cursor recovered from the capstone disasm of @004c6798/@004c6920/@004c6934/@004c6be4/@004c6c30/ @004c6c6c (Ghidra dropped every x87 arg). Plot: v=0..12000 step 1200, x=Round(response(v)*230), y=Round(v*(1/12000)*187) (ld80 @004c6bd0/@004c6d74 = exactly 1/12000); change-test samples the response at 12000V vs the 9999 activation sentinel; XOR op for tick/cursor move-by-redraw; destroyed branch centres edestryd.pcc and revives via own vtbl+0xC (BecameActive, slot 3 of PTR_0051a1fc -- vtable-dump verified). - The vtbl+0x3C sampler identified from the binary vtables: Emitter slot 15 @004bb42c = sqrt(P(v)/2.0e8), P @004bb3f4 = damageFraction*v^2*0.5* energyCoefficient; Myomers slot 15 @004b8f94 = sqrt(AvailableOutput(v)*3.6/ 350). FUN_004dd138 == sqrt (part_015.c:4026): myomers' fabs reading corrected, GetSpeedReading renamed SeekVoltageResponse. Port dispatch via complete-type bridges BTSeekVoltageSample/BTMyomersSeekSample + BTSubsystemDestroyed (databinding rule). - Emitter's AUTHENTIC attribute table recovered (binary @0x511dd4, ids 0x1D-0x25) and published: Laser*/Seek*/OutputVoltage@0x414 (currentLevel, RAW volts -- the live-cursor feed). Field renames per the table: 0x3F8 minSeekVoltageIndex / 0x3FC maxSeekVoltageIndex (static_assert-locked). The MechWeapon 0x1D OutputVoltage PORT ALIAS retired (binary table ends 0x1C; Find walks lowest-id-first, the alias shadowed the authentic row). PPC::DefaultData -> Emitter::GetAttributeIndex(). - mech4: BT_PRESET_HOLD=<n> (freeze the #9 preset cycler after n pulses) for steady-state pixel verification; BT_SEEK_LOG diag. Verified live (BLH, autofire): both #10 repro pairs held ghost-free for minutes (SYS09->SYS10 PPC, SYS02->SYS04 ERMed, SYS05->SYS06 Myomers); curves draw with live cursors; one replot per activation; quad panels/J-K-L/sec panel un-regressed. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
arcattack
co-authored by
Claude Fable 5
Claude Fable 5
parent
f1a6ccbaaf
commit
63b168cb92
@@ -40,8 +40,9 @@
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// ConnectToMover/DisconnectFromMover bodies.
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// best-effort : MyomersSimulation (@004b8d18) is the per-tick Performance
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// (only reachable via function pointer; SetPerformance call
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// site not captured -- see note); GetSpeedReading (@004b8f94,
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// slot 15) purpose; ToggleSeekVoltage (@004b8a48) not present
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// site not captured -- see note); [slot 15 @004b8f94 RESOLVED
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// issue #11: SeekVoltageResponse -- the SeekVoltageGraph
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// sampler, sqrt not fabs]; ToggleSeekVoltage (@004b8a48) not present
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// in the decompiled shards; the heat-base field @0x150 and
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// graphic-state block (this[7..9]) inherit-pattern stores.
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// excluded : @0x4b7f94..@0x4b881c (gimbal / torso-horizon display, base
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@@ -315,7 +316,7 @@ int Myomers::CreateStreamedSubsystem(
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//***************************************************************************
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//
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// Core drive computation: returns the locomotion drive available for a given
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// input voltage. (helper; called by RegisterMaxOutput and GetSpeedReading.)
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// input voltage. (helper; called by RegisterMaxOutput and SeekVoltageResponse.)
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//
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// base = ownerMech[0x34C] * (input_voltage / seekVoltage[recommendedIndex])
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// ^ Mech base-speed scalar ^ normalise to the recommended gear
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@@ -372,19 +373,40 @@ void Myomers::RegisterMaxOutput()
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//***************************************************************************
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// Myomers::GetSpeedReading slot 15 @004b8f94
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// Myomers::SeekVoltageResponse slot 15 @004b8f94
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//***************************************************************************
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//
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// PoweredSubsystem virtual slot 15 (base @004b1780). Best-effort: converts
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// AvailableOutput(input_voltage) into a normalised gauge reading -- output is
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// scaled by 3.6 (m/s -> km/h) and divided by 350 (gauge full scale), then run
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// through FUN_004dd138 (fp magnitude helper / sqrt). Drives a cockpit
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// speed gauge. (Decompiled body discards the result -> returned via FPU.)
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// PoweredSubsystem virtual slot 15 (base @004b1780) == the shared subsystem
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// vtbl+0x3C sampler the SeekVoltageGraph's Execute (@004c6934) plots -- THIS
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// is what draws the myomer engineering page's POWER curve (issue #11; the
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// old "drives a cockpit speed gauge" guess and the GetSpeedReading name are
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// retired). Converts AvailableOutput(input_voltage) into the graph's 0..1
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// x-response: scaled by 3.6 (m/s -> km/h), normalised to a 350 km/h full
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// scale, then FUN_004dd138 == SQRT (part_015.c:4026 -- the old "fp magnitude
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// / fabs" reading was wrong; sqrt is also what Emitter's analog @004bb42c
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// applies to its power ratio). (Decompiled body discards the result ->
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// returned via FPU.)
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//
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Scalar Myomers::GetSpeedReading(Scalar input_voltage)
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Scalar Myomers::SeekVoltageResponse(Scalar input_voltage)
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{
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Scalar output = AvailableOutput(input_voltage); // @004b8ac0
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return (Scalar)fabs((double)((output * 3.6f - 0.0f) / 350.0f)); // FUN_004dd138 (fp magnitude)
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Scalar r = (output * 3.6f - 0.0f) / 350.0f;
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// (FUN_004dd138 routes a negative operand to the matherr handler; output
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// >= 0 in practice -- guarded for port safety.)
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return (r > 0.0f) ? (Scalar)sqrt((double)r) : 0.0f; // FUN_004dd138 (sqrt)
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}
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//***************************************************************************
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// issue #11 bridge -- the Myomers leg of the SeekVoltageGraph sample dispatch
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// (see emitter.cpp BTSeekVoltageSample). Guarded: a non-Myomers subsystem
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// samples 0 (only emitter/myomer pages own a graph in the shipped config).
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//***************************************************************************
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Scalar BTMyomersSeekSample(void *subsystem, Scalar voltage)
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{
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Entity *entity = (Entity *)subsystem;
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if (entity == 0 || !entity->IsDerivedFrom(Myomers::ClassDerivations))
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return 0.0f;
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return ((Myomers *)entity)->SeekVoltageResponse(voltage); // @004b8f94
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}
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