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TeslaRel410/restoration/source410/BT/HEAT.CPP
T
CydandClaude Fable 5 6451a0a38d BT410 Phase 5.3.14: AggregateHeatSink -- the bank + the ambient radiator (the heat EXIT) 
The central heat bank is now its real class: the binary's 0x0BBE
AggregateHeatSink (the value our VDATA enum named HeatSinkClassID -- there is
no streamed plain HeatSink; the segment walk now builds the bank).

- Ctor (@4ae8d0): heatSinkCount from res +0xFC (bhk1 = 6, matching its six
  condensers); thermalConductance x 0.1 x count (231000 -> 138600); ambient
  setpoint 300 (the mission [mission] temperature overwrite joins the
  Mech-PlayerLink wave).
- RadiatorSimulation (@4ae73c) replaces the base heat step on the bank -- THE
  system's only heat exit: relax toward the ambient target with rate
  k = conductance x (1-damage) x (coolant/capacity) x flowScale / mass; tail
  tops the bank's coolant from the attached store via the DrawCoolant virtual
  (base 0 until the reservoir-attach wave). VERIFIED signed-correct: the bank
  warms 77 -> 300 from the cold start, then flips to actively radiating
  (-48K..-167K/step) once fired heat pushes it past ambient. Until now heat
  only ever POOLED in the central sink; the mech now genuinely sheds it.
- Reservoir master path: capacity = 0.05 x bankCount x streamed = 6 (the
  authentic tank), refilled.

Zero Fail; the expert economy regression stays green (202 heat events under
forced spam).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-24 08:54:21 -05:00

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//===========================================================================//
// File: heat.cpp //
// Project: BattleTech Brick: Mech subsystems //
// Contents: HeatableSubsystem -- a MechSubsystem with a thermal state //
//---------------------------------------------------------------------------//
// Copyright (C) 1995, Virtual World Entertainment, Inc. //
// All Rights reserved worldwide //
// This unpublished sourcecode is PROPRIETARY and CONFIDENTIAL //
//===========================================================================//
#include <bt.hpp>
#pragma hdrstop
#if !defined(HEAT_HPP)
# include <heat.hpp>
#endif
#if !defined(MECH_HPP)
# include <mech.hpp>
#endif
#if !defined(BTPLAYER_HPP)
# include <btplayer.hpp>
#endif
#include <math.h>
//
//#############################################################################
// Tuning constants (byte-verified against the shipped image in the BT411 RE:
// .data / literal-pool reads).
//#############################################################################
//
static const Scalar HeatLoadScale = 0.002f; // heat-load normalising scale -> band [0,1]
static const Scalar HeatLoadMinimum = 0.0f;
static const Scalar HeatLoadMaximum = 1.0f;
static const Scalar HeatEqualizeEpsilon = 1.0e-4f; // BalanceCoolant no-op band
static const Scalar CoolantDrawGate = 1.0e-4f; // DrawCoolant |amount| gate
static const Scalar CoolantDrawFloor = 0.0025f; // draw zero-floor + ACTIVE-off hysteresis
static const Scalar CoolantActiveOn = 0.003f; // coolantActive ON threshold
//
//#############################################################################
// Shared data support -- reuses the base Subsystem sets (no boot-critical
// handlers / attributes of its own).
//#############################################################################
//
Derivation
HeatableSubsystem::ClassDerivations(
MechSubsystem::ClassDerivations,
"HeatableSubsystem"
);
HeatableSubsystem::SharedData
HeatableSubsystem::DefaultData(
HeatableSubsystem::ClassDerivations,
Subsystem::MessageHandlers,
Subsystem::AttributeIndex,
Subsystem::StateCount
);
//
//#############################################################################
//#############################################################################
//
HeatableSubsystem::HeatableSubsystem(
Mech *owner,
int subsystem_ID,
SubsystemResource *subsystem_resource,
SharedData &shared_data
):
MechSubsystem(
owner,
subsystem_ID,
(MechSubsystem::SubsystemResource *)subsystem_resource,
shared_data
)
{
Check(owner);
Check_Pointer(subsystem_resource);
ResetToInitialState();
Check_Fpu();
}
//
//#############################################################################
//#############################################################################
//
HeatableSubsystem::~HeatableSubsystem()
{
}
//
//#############################################################################
//#############################################################################
//
void
HeatableSubsystem::ResetToInitialState()
{
Check(this);
currentTemperature = 300.0f;
heatLoad = 0.0f;
}
//
//#############################################################################
//#############################################################################
//
Logical
HeatableSubsystem::TestClass(Mech &)
{
return True;
}
Logical
HeatableSubsystem::TestInstance() const
{
return IsDerivedFrom(ClassDerivations);
}
//
//#############################################################################
// CreateStreamedSubsystem Model-load-time construction (thermal resource +
// damage-zone stream). Not yet reconstructed (see MECHSUB.NOTES.md).
//#############################################################################
//
int
HeatableSubsystem::CreateStreamedSubsystem(
NotationFile *,
const char *,
const char *,
SubsystemResource *,
NotationFile *,
const ResourceDirectories *,
int
)
{
Fail("HeatableSubsystem::CreateStreamedSubsystem -- heat.cpp not yet reconstructed");
return 0;
}
//###########################################################################
//############################## HeatSink ###############################
//###########################################################################
//
//#############################################################################
// Shared data support
//#############################################################################
//
Derivation
HeatSink::ClassDerivations(
HeatableSubsystem::ClassDerivations,
"HeatSink"
);
//
// The cockpit cooling toggle (id 3 -- the first subsystem-family message).
//
const HeatSink::HandlerEntry
HeatSink::MessageHandlerEntries[]=
{
MESSAGE_ENTRY(HeatSink, ToggleCooling)
};
HeatSink::MessageHandlerSet
HeatSink::MessageHandlers(
ELEMENTS(HeatSink::MessageHandlerEntries),
HeatSink::MessageHandlerEntries,
Subsystem::MessageHandlers
);
HeatSink::SharedData
HeatSink::DefaultData(
HeatSink::ClassDerivations,
HeatSink::MessageHandlers,
Subsystem::AttributeIndex,
Subsystem::StateCount
);
//
//#############################################################################
// The heat sink -- a thermal mass with a coolant loop. A master sink drives
// the per-frame thermal simulation.
//#############################################################################
//
HeatSink::HeatSink(
Mech *owner,
int subsystem_ID,
SubsystemResource *subsystem_resource,
SharedData &shared_data
):
HeatableSubsystem(owner, subsystem_ID, subsystem_resource, shared_data),
linkedSinks(),
heatAlarm(3)
{
Check(owner);
Check_Pointer(subsystem_resource);
currentTemperature = subsystem_resource->startingTemperature;
degradationTemperature = subsystem_resource->degradationTemperature;
failureTemperature = subsystem_resource->failureTemperature;
heatLoad = 0.0f;
coolantEfficiency = 0.5f;
thermalCapacity = 1.0f;
coolantLevel = thermalCapacity;
coolantDraw = 0.0f;
coolantAvailable = 1;
coolantActive = 0;
startingTemperature = currentTemperature;
thermalConductance = subsystem_resource->thermalConductance;
heatFilter.SetSize(15, 0.0f);
filterDecay = 0.4f;
thermalMass = subsystem_resource->thermalMass;
heatEnergy = thermalMass * startingTemperature;
coolantFlowScale = 1.0f;
massScale = 1.0f;
pendingHeat = 0.0f;
radiatedHeat = 0.0f;
//
// Wire the heat-conduction link: the resource names the roster slot of the
// sink this one drains into (weapons/equipment -> the Condenser bank, the
// Condensers -> the central HeatSink). The shipped stream orders sinks so
// the target is already constructed; an unresolvable index leaves the sink
// standalone (its own thermal mass only).
//
{
Subsystem *linked = NULL;
if (subsystem_resource->linkedSinkIndex >= 0
&& subsystem_resource->linkedSinkIndex < owner->GetSubsystemCount())
{
linked = owner->GetSubsystem(subsystem_resource->linkedSinkIndex);
}
if (linked != NULL)
{
linkedSinks.Add(linked);
}
if (getenv("BT_POWER_LOG"))
{
DEBUG_STREAM << "[heat] '" << GetName()
<< "' linkedSinkIdx=" << subsystem_resource->linkedSinkIndex
<< " -> ";
if (linked != NULL)
{
DEBUG_STREAM << linked->GetName();
}
else
{
DEBUG_STREAM << "<none>";
}
DEBUG_STREAM << " thermalMass=" << thermalMass
<< " T0=" << currentTemperature
<< " degrade=" << degradationTemperature
<< " fail=" << failureTemperature
<< " conduct=" << thermalConductance << endl << flush;
}
}
//
// Install the per-frame thermal Performance (replicant copies are driven by
// console updates instead). Derived classes (PoweredSubsystem, Generator,
// the weapons) override with their own Performance in their ctors, each of
// which chains this step.
//
if (owner->GetInstance() != Entity::ReplicantInstance)
{
SetPerformance(&HeatSink::HeatSinkSimulation);
}
Check_Fpu();
}
//
//#############################################################################
//#############################################################################
//
HeatSink::~HeatSink()
{
}
//
//#############################################################################
//#############################################################################
//
void
HeatSink::ResetToInitialState(Logical /*powered*/)
{
Check(this);
currentTemperature = startingTemperature;
heatLoad = 0.0f;
coolantLevel = thermalCapacity;
coolantDraw = 0.0f;
coolantActive = 0;
heatEnergy = thermalMass * startingTemperature;
pendingHeat = 0.0f;
radiatedHeat = 0.0f;
heatAlarm.SetLevel(0);
}
//
//#############################################################################
//#############################################################################
//
Logical
HeatSink::TestClass(Mech &)
{
return True;
}
Logical
HeatSink::TestInstance() const
{
return IsDerivedFrom(ClassDerivations);
}
//
//#############################################################################
// HeatModelActive -- the heat-model master switch (binary FUN_004ad7d4):
// owner mech -> Entity::playerLink -> BTPlayer::heatModelOn, ON only for
// veteran / expert experience. Standard mode has NO heat consequences --
// authentic, not a gap. A NULL player link (unlinked dev mech / target dummy)
// reads ON, matching the permissive dev-rig behavior; the binary derefs
// unguarded (a linked player always exists in pod missions).
//#############################################################################
//
Logical
HeatSink::HeatModelActive()
{
Check(this);
if (owner == NULL)
{
return True;
}
BTPlayer *player = Cast_Object(BTPlayer *, owner->GetPlayerLink());
if (player == NULL)
{
return True;
}
return player->IsHeatModelOn();
}
//
//#############################################################################
// HeatSinkSimulation -- the per-frame thermal step (binary @004ad924).
// Under the heat-model experience gate: absorb the pending heat into the
// thermal mass, recompute the temperature and the smoothed heat-load reading,
// conduct into the linked sink, and run the coolant draw. The degradation /
// failure alarm drive is OUTSIDE the gate (authentic -- with the model off the
// temperature never moves, so the alarm just holds Normal).
//#############################################################################
//
void
HeatSink::HeatSinkSimulation(Scalar time_slice)
{
Check(this);
if (HeatModelActive())
{
heatEnergy += pendingHeat;
currentTemperature = heatEnergy / thermalMass;
UpdateHeatLoad();
pendingHeat = 0.0f;
ConductHeat(time_slice);
}
if (HeatModelActive())
{
UpdateCoolant(time_slice);
}
//
// Drive the degradation / failure alarm.
//
if (currentTemperature > failureTemperature)
{
heatAlarm.SetLevel(FailureHeat);
}
else if (currentTemperature > degradationTemperature)
{
heatAlarm.SetLevel(DegradationHeat);
}
else
{
heatAlarm.SetLevel(NormalHeat);
}
//
// BT_HEAT_LOG: a 5-second per-sink census (temperature / coolant / load).
//
if (getenv("BT_HEAT_LOG"))
{
static Scalar censusAccum = 0.0f;
censusAccum += time_slice;
if (censusAccum >= 5.0f)
{
censusAccum = 0.0f;
DEBUG_STREAM << "[heat-t] " << GetName()
<< " T=" << currentTemperature
<< " cool=" << coolantLevel << "/" << thermalCapacity
<< " load=" << heatLoad << endl << flush;
}
}
Check_Fpu();
}
//
//#############################################################################
// UpdateHeatLoad -- recompute the radiated heat and feed the normalised sample
// through the 15-sample running-average filter to produce the smoothed
// heatLoad reading in the [0,1] band (binary @004ad7f0; the shaping constants
// are byte-verified from the image).
//#############################################################################
//
void
HeatSink::UpdateHeatLoad()
{
Check(this);
radiatedHeat = currentTemperature * coolantLevel;
Scalar sample = HeatLoadScale * radiatedHeat;
if (sample < HeatLoadMinimum)
{
sample = HeatLoadMinimum;
}
else if (sample > HeatLoadMaximum)
{
sample = HeatLoadMaximum;
}
heatFilter.Add(sample);
heatLoad = heatFilter.CalculateAverage();
}
//
//#############################################################################
// ConductHeat -- conduct heat into the linked sink, then rebalance coolant so
// the hotter side sheds load (binary @004ad8ac).
//#############################################################################
//
void
HeatSink::ConductHeat(Scalar time_slice)
{
Check(this);
HeatSink *other = (HeatSink *)linkedSinks.Resolve();
if (other != NULL && coolantAvailable != 0)
{
Scalar flow = ComputeHeatFlow(other, time_slice);
other->pendingHeat += flow;
pendingHeat -= flow;
BalanceCoolant(time_slice);
}
}
//
//#############################################################################
// BalanceCoolant -- move coolant between this sink and its linked sink so that
// the hotter side sheds load (binary @004ada94). Clamped on both ends so
// neither sink goes below empty or above its capacity.
//#############################################################################
//
void
HeatSink::BalanceCoolant(Scalar time_slice)
{
Check(this);
HeatSink *other = (HeatSink *)linkedSinks.Resolve();
if (other == NULL)
{
return;
}
Scalar spread = radiatedHeat - other->radiatedHeat;
if (spread < 0.0f)
{
spread = -spread;
}
if (spread <= HeatEqualizeEpsilon)
{
return;
}
Scalar delta = other->radiatedHeat / currentTemperature - coolantLevel;
//
// Clamp delta to +/- (thermalCapacity * dt).
//
Scalar limit = thermalCapacity * time_slice;
if (delta < -limit)
{
delta = -limit;
}
else if (delta > limit)
{
delta = limit;
}
//
// Clamp so this sink stays within [0, thermalCapacity].
//
Scalar hi = thermalCapacity - coolantLevel;
Scalar lo = -coolantLevel;
if (delta < lo) delta = lo;
else if (delta > hi) delta = hi;
//
// Clamp so the other sink stays within its own [0, thermalCapacity].
//
Scalar otherLo = -(other->thermalCapacity - other->coolantLevel);
if (delta < otherLo) delta = otherLo;
else if (delta > other->coolantLevel) delta = other->coolantLevel;
delta = coolantFlowScale * delta;
coolantLevel += delta;
other->coolantLevel -= delta;
}
//
//#############################################################################
// UpdateCoolant -- consume coolant proportional to the current load, request a
// top-up from the central cooling system, and update the draw state machine
// (binary @004adbf8). The draw scales with THIS subsystem's own structural
// damage: an undamaged subsystem leaks nothing (the coolant bars stay full on
// a pristine mech); the draw rises only as the sink itself takes battle
// damage.
//#############################################################################
//
void
HeatSink::UpdateCoolant(Scalar time_slice)
{
Check(this);
coolantDraw = GetSubsystemDamageLevel() * heatLoad;
if (coolantDraw < CoolantDrawFloor)
{
coolantDraw = 0.0f;
}
Scalar amount = coolantDraw * time_slice;
if (coolantLevel < amount)
{
amount = coolantLevel;
}
coolantLevel -= amount;
if (amount > CoolantDrawGate || amount < -CoolantDrawGate)
{
coolantLevel += DrawCoolant(amount);
}
//
// The draw state machine (hysteresis: ON above 0.003, OFF below 0.0025).
//
if (coolantActive == 0 && coolantDraw > CoolantActiveOn)
{
coolantActive = 1;
}
else if (coolantActive == 1 && coolantDraw < CoolantDrawFloor)
{
coolantActive = 0;
}
}
//
//#############################################################################
// ComputeHeatFlow -- conductive heat exchange between this sink and 'other'
// (binary @004ad9ec):
// tau = thermalMass / massScale
// denom = tau + other->thermalMass
// q = (currentTemperature*massScale
// - (other->heatEnergy + other->pendingHeat + heatEnergy) / denom)
// * tau
// * (1 - exp( -dt * thermalConductance
// * (coolantLevel / thermalCapacity)
// * coolantFlowScale / denom ))
//#############################################################################
//
Scalar
HeatSink::ComputeHeatFlow(HeatSink *other, Scalar time_slice)
{
Check(this);
Check(other);
Scalar tau = thermalMass / massScale;
Scalar denom = tau + other->thermalMass;
Scalar equilibrium =
currentTemperature * massScale
- (other->heatEnergy + other->pendingHeat + heatEnergy) / denom;
Scalar response = 1.0f - (Scalar)exp(
-time_slice * thermalConductance
* (coolantLevel / thermalCapacity)
* coolantFlowScale / denom
);
return equilibrium * tau * response;
}
//
//#############################################################################
// DrawCoolant -- ask the central cooling system for coolant and return how
// much was actually supplied. Base sinks supply nothing on their own; the
// Reservoir (the coolant store) overrides this as the source.
//#############################################################################
//
Scalar
HeatSink::DrawCoolant(Scalar)
{
Check(this);
return 0.0f;
}
//
//#############################################################################
// ToggleCoolingMessageHandler -- the cockpit cooling on/off switch (binary
// @004ad6f8, id 3): novice-locked, press-only; toggles the coolant supply and
// the conduction flow together (OFF = this sink stops conducting into the
// bank -- its heat strands until cooling is switched back on).
//#############################################################################
//
void
HeatSink::ToggleCoolingMessageHandler(ReceiverDataMessageOf<int> *message)
{
Check(this);
Check(message);
if (NoviceLockout())
{
return;
}
if (message->dataContents <= 0) // press only
{
return;
}
if (coolantAvailable != 0)
{
coolantAvailable = 0;
coolantFlowScale = 0.0f;
}
else
{
coolantAvailable = 1;
coolantFlowScale = 1.0f;
}
if (getenv("BT_MECH_LOG"))
{
DEBUG_STREAM << "[cool] '" << GetName()
<< "' cooling toggled -> " << coolantAvailable << endl << flush;
}
}
//###########################################################################
//############################# HeatWatcher #############################
//###########################################################################
Derivation
HeatWatcher::ClassDerivations(
MechSubsystem::ClassDerivations,
"HeatWatcher"
);
HeatWatcher::SharedData
HeatWatcher::DefaultData(
HeatWatcher::ClassDerivations,
Subsystem::MessageHandlers,
Subsystem::AttributeIndex,
Subsystem::StateCount
);
HeatWatcher::HeatWatcher(
Mech *owner,
int subsystem_ID,
SubsystemResource *subsystem_resource,
SharedData &shared_data
):
MechSubsystem(
owner,
subsystem_ID,
(MechSubsystem::SubsystemResource *)subsystem_resource,
shared_data
),
watchedLink(),
heatAlarm(3)
{
Check(owner);
Check_Pointer(subsystem_resource);
degradationTemperature = subsystem_resource->degradationTemperature;
failureTemperature = subsystem_resource->failureTemperature;
watchedSubsystem = subsystem_resource->watchedSubsystem;
//
// The master instance runs WatchSimulation per-frame; the install is
// deferred with that (staged) method.
//
Check_Fpu();
}
HeatWatcher::~HeatWatcher()
{
}
Logical
HeatWatcher::TestClass(Mech &)
{
return True;
}
Logical
HeatWatcher::TestInstance() const
{
return IsDerivedFrom(ClassDerivations);
}
void
HeatWatcher::ResetToInitialState(Logical /*powered*/)
{
Check(this);
heatAlarm.SetLevel(0);
}
//
// Per-frame: resolve the watched subsystem, read its temperature, drive the
// 3-level alarm. Not yet reconstructed.
//
void
HeatWatcher::WatchSimulation(Scalar)
{
Fail("HeatWatcher::WatchSimulation -- heat.cpp not yet reconstructed");
}
//###########################################################################
//############################## Condenser #############################
//###########################################################################
Derivation
Condenser::ClassDerivations(
HeatSink::ClassDerivations,
"Condenser"
);
//
// The cockpit condenser-valve button (the binary's Condenser handler table
// has exactly ONE entry: id 4, "MoveValve"). ToggleCooling (id 3) is
// inherited from the HeatSink chain.
//
const Condenser::HandlerEntry
Condenser::MessageHandlerEntries[]=
{
MESSAGE_ENTRY(Condenser, MoveValve)
};
Condenser::MessageHandlerSet
Condenser::MessageHandlers(
ELEMENTS(Condenser::MessageHandlerEntries),
Condenser::MessageHandlerEntries,
HeatSink::MessageHandlers
);
Condenser::SharedData
Condenser::DefaultData(
Condenser::ClassDerivations,
Condenser::MessageHandlers,
Subsystem::AttributeIndex,
Subsystem::StateCount
);
Condenser::Condenser(
Mech *owner,
int subsystem_ID,
SubsystemResource *subsystem_resource,
SharedData &shared_data
):
HeatSink(owner, subsystem_ID, subsystem_resource, shared_data)
{
Check(owner);
Check_Pointer(subsystem_resource);
//
// The authentic ctor (binary @4ae568): the valve opens at 1, the
// refrigeration output rides the inherited massScale slot, and the
// condenser's own coolantFlowScale starts 0 -- the valve recompute
// (RecomputeValves: MoveValve presses, and once at mech spawn) assigns
// each condenser its share of the total valve opening.
//
valveState = 1;
coolantFlowScale = 0.0f;
refrigerationFactor = subsystem_resource->refrigerationFactor;
massScale = refrigerationFactor;
//
// Condenser number from the segment-name DIGIT suffix ("Condenser1" -> 1;
// the letter form -0x40 is the GENERATOR convention).
//
const char *name = GetName();
condenserNumber = name[strlen(name) - 1] - '0';
if (getenv("BT_POWER_LOG"))
{
DEBUG_STREAM << "[cond] '" << GetName()
<< "' refrigFactor=" << refrigerationFactor
<< " #" << condenserNumber << endl << flush;
}
//
// Install the per-frame refrigeration Performance.
//
if (owner->GetInstance() != Entity::ReplicantInstance)
{
SetPerformance(&Condenser::RefrigerationSimulation);
}
Check_Fpu();
}
Condenser::~Condenser()
{
}
Logical
Condenser::TestClass(Mech &)
{
return True;
}
Logical
Condenser::TestInstance() const
{
return IsDerivedFrom(ClassDerivations);
}
//
//#############################################################################
// RefrigerationSimulation -- the condenser's per-frame step (binary @4ae4d8):
// recompute the refrigeration output as (1 - own structural damage) *
// refrigerationFactor, clamped >= 1, into the inherited massScale slot -- an
// undamaged condenser behaves refrigerationFactor-times "hotter" in the
// conduction exchange, actively pumping heat toward the central bank and
// chilling itself below ambient -- then run the base HeatSink step.
//#############################################################################
//
void
Condenser::RefrigerationSimulation(Scalar time_slice)
{
Check(this);
massScale = (1.0f - GetSubsystemDamageLevel()) * refrigerationFactor;
if (massScale < 1.0f)
{
massScale = 1.0f;
}
HeatSink::HeatSinkSimulation(time_slice);
}
//
//#############################################################################
// MoveValveMessageHandler -- the cockpit condenser-valve button (binary
// @4ae464, id 4): novice-locked, press-only; cycles THIS condenser's valve
// 1 -> 5 -> 50 -> 0 -> 1, then recomputes every condenser's flow share.
//#############################################################################
//
void
Condenser::MoveValveMessageHandler(ReceiverDataMessageOf<int> *message)
{
Check(this);
Check(message);
if (NoviceLockout())
{
return;
}
if (message->dataContents <= 0) // press only
{
return;
}
switch (valveState)
{
case 0: valveState = 1; break;
case 1: valveState = 5; break;
case 5: valveState = 50; break;
case 50: valveState = 0; break;
default: return; // unknown -> no change, no recompute
}
RecomputeValves((Entity *)owner);
}
//
//#############################################################################
// RecomputeValves -- assign every condenser its coolant flow share
// (valve / sum-of-valves) after a valve move (binary @0049f788). All valves
// at the spawn default (1) yield equal shares. (The condenser-alarm change
// pulse joins with the gauge wave.)
//#############################################################################
//
void
Condenser::RecomputeValves(Entity *owner_mech)
{
Check(owner_mech);
int count = owner_mech->GetSubsystemCount();
int total = 0;
int i;
for (i = 2; i < count; ++i)
{
Subsystem *s = owner_mech->GetSubsystem(i);
if (s != NULL && s->IsDerivedFrom(Condenser::ClassDerivations))
{
total += ((Condenser *)s)->valveState;
}
}
for (i = 2; i < count; ++i)
{
Subsystem *s = owner_mech->GetSubsystem(i);
if (s != NULL && s->IsDerivedFrom(Condenser::ClassDerivations))
{
Condenser *condenser = (Condenser *)s;
condenser->coolantFlowScale = (total > 0)
? ((Scalar)condenser->valveState / (Scalar)total)
: 0.0f;
if (getenv("BT_MECH_LOG"))
{
DEBUG_STREAM << "[valve] '" << condenser->GetName()
<< "' valve=" << condenser->valveState
<< " flow=" << condenser->coolantFlowScale << endl;
}
}
}
if (getenv("BT_MECH_LOG"))
{
DEBUG_STREAM << flush;
}
}
//###########################################################################
//######################### AggregateHeatSink ###########################
//###########################################################################
Derivation
AggregateHeatSink::ClassDerivations(
HeatSink::ClassDerivations,
"HeatSinkBank"
);
AggregateHeatSink::SharedData
AggregateHeatSink::DefaultData(
AggregateHeatSink::ClassDerivations,
HeatSink::MessageHandlers,
Subsystem::AttributeIndex,
Subsystem::StateCount
);
//
//#############################################################################
// The heat-sink bank (binary ctor @4ae8d0): the aggregate count scales the
// conductance (0.1 x count, byte-verified), the ambient setpoint defaults
// 300 K (the mission's [mission] temperature overwrites it in the PlayerLink
// pass -- that override joins the Mech-PlayerLink wave), and a master runs
// the RADIATOR Performance instead of the base heat step.
//#############################################################################
//
AggregateHeatSink::AggregateHeatSink(
Mech *owner,
int subsystem_ID,
SubsystemResource *subsystem_resource,
SharedData &shared_data
):
HeatSink(owner, subsystem_ID, subsystem_resource, shared_data)
{
Check(owner);
Check_Pointer(subsystem_resource);
heatSinkCount = subsystem_resource->heatSinkCount;
ambientTemperature = 300.0f;
thermalConductance = 0.1f * (Scalar)heatSinkCount * thermalConductance;
if (getenv("BT_POWER_LOG"))
{
DEBUG_STREAM << "[bank] '" << GetName()
<< "' heatSinkCount=" << heatSinkCount
<< " conductance=" << thermalConductance << endl << flush;
}
if (owner->GetInstance() != Entity::ReplicantInstance)
{
SetPerformance(&AggregateHeatSink::RadiatorSimulation);
}
Check_Fpu();
}
AggregateHeatSink::~AggregateHeatSink()
{
}
Logical
AggregateHeatSink::TestClass(Mech &)
{
return True;
}
Logical
AggregateHeatSink::TestInstance() const
{
return IsDerivedFrom(ClassDerivations);
}
//
//#############################################################################
// RadiatorSimulation -- the bank's per-frame step (binary @4ae73c), replacing
// the base HeatSinkSimulation: under the heat-model gate, absorb + recompute
// the load, then the AMBIENT RADIATOR -- relax the bank toward the setpoint
// target (300 - (300 - ambient) x 3) with rate k = conductance x (1 - own
// damage) x (coolant/capacity) x flowScale / mass. This is the system's ONLY
// heat exit. Tail: top the bank's coolant up from the attached store via the
// DrawCoolant virtual (the reservoir-attach routing joins that wave; the base
// supplies 0 until then, a harmless no-op).
//#############################################################################
//
void
AggregateHeatSink::RadiatorSimulation(Scalar time_slice)
{
Check(this);
if (HeatModelActive())
{
heatEnergy += pendingHeat;
currentTemperature = heatEnergy / thermalMass;
UpdateHeatLoad();
pendingHeat = 0.0f;
Scalar target = 300.0f - (300.0f - ambientTemperature) * 3.0f;
Scalar decay = 1.0f - (Scalar)exp(
(double)(-(time_slice * thermalConductance
* (1.0f - GetSubsystemDamageLevel())
* (coolantLevel / thermalCapacity) * coolantFlowScale)
/ thermalMass)
);
Scalar shed = -((currentTemperature * massScale - target)
* thermalMass * decay);
pendingHeat += shed;
if (getenv("BT_HEAT_LOG"))
{
static Scalar bankAccum = 0.0f;
bankAccum += time_slice;
if (bankAccum >= 5.0f)
{
bankAccum = 0.0f;
DEBUG_STREAM << "[heat-t] " << GetName() << " (bank)"
<< " T=" << currentTemperature
<< " shed=" << shed
<< " cool=" << coolantLevel << "/" << thermalCapacity
<< " load=" << heatLoad << endl << flush;
}
}
}
//
// Coolant top-up from the attached store.
//
Scalar deficit = thermalCapacity - coolantLevel;
if (deficit > 1.0e-4f)
{
coolantLevel += DrawCoolant(deficit);
}
}
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