BT410 Phase 5.3.18: flying missiles -- spawn/home/detonate LIVE, teardown open

The Missile entity family is reconstructed: Projectile : Mover gets a real make-path ctor; Missile hosts the Seeker + MissleThruster roster (the AUTHENTIC surviving SEEKER.HPP / MISTHRST.HPP interfaces -- the 1995 misspelling included) and flies the binary's guided integrator (@004bef78): age/lifetime, seeker re-lead with the decoded loft constants (200/50/300/0.1), thruster burn, steering (gain 4.0, deadband 1e-4), and the proximity fuse delivering the cluster damage ONCE with the launcher as inflictor. Live-verified end-to-end: LAUNCH -> flight telemetry (thruster visibly accelerating) -> DETONATE on the target ~0.9s out. OPEN: the first ~Missile off the death row completes, then the frame page-faults with EIP in the heap -- the first entity/subsystem teardown the reconstructed sim has ever run. The spawn path is therefore OPT-IN (BT_MISSILE_FLIGHT=1); default SRM delivery stays the 5.3.18a instant-hit cluster (verified 1:1, zero exceptions). Forensics + engine truths (SearchList crashes on non-directory ids; MakeMessages need FAMILY resource ids; explosionModelFile is a model-list INDEX) in MISSILE.NOTES.md. Also fixed on the way: the Subsystem NAME ctor left damageZone UNINITIALIZED (latent garbage for every name-built subsystem). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-24 11:58:40 -05:00
parent 9dd0aa8702
commit 110ecec2ca
10 changed files with 899 additions and 20 deletions
@@ -0,0 +1,135 @@
+//===========================================================================//
+// File:	misthrst.cpp                                                        //
+// Project: BattleTech           Brick: Mech weapons                          //
+// Contents: MissileThruster -- the missile's propulsion subsystem           //
+//---------------------------------------------------------------------------//
+// Copyright (C) 1995, Virtual World Entertainment, Inc.                     //
+// All Rights reserved worldwide                                             //
+// This unpublished sourcecode is PROPRIETARY and CONFIDENTIAL               //
+//===========================================================================//
+//
+// The class interface is the AUTHENTIC surviving CODE/BT/BT/MISTHRST.HPP.
+// Bodies reconstructed via the BT411 decomp (ctor @004be7c4).  The Subsystem
+// base chain is the NAME ctor with the shipped string "MissleThruster"
+// @00512e25 (the 1995 misspelling is AUTHENTIC -- keep it).  No streamed
+// resource in the pod content: the flight envelope defaults below are
+// STAGED until the missile GameModel record decode (see MISSILE.NOTES.md).
+//
+
+#include <bt.hpp>
+#pragma hdrstop
+
+#if !defined(MISTHRST_HPP)
+#	include <misthrst.hpp>
+#endif
+
+#if !defined(MISSILE_HPP)
+#	include <missile.hpp>
+#endif
+
+//
+// STAGED-DEFAULT burn envelope (a believable SRM: short hard burn).
+//
+static const Scalar DefaultBurnTime					= 2.0f;
+static const Scalar DefaultThrusterAcceleration		= 120.0f;	// u/s^2
+static const Scalar DefaultThrusterClimb			= 0.0f;
+
+Derivation
+	MissileThruster::ClassDerivations(
+		Subsystem::ClassDerivations,
+		"MissileThruster"
+	);
+
+const MissileThruster::IndexEntry
+	MissileThruster::AttributePointers[] =
+{
+	ATTRIBUTE_ENTRY(MissileThruster, BurnTimeRemaining,		burnTimeRemaining),
+	ATTRIBUTE_ENTRY(MissileThruster, MaxThrusterRotationRate,	maxThrusterRotationRate),
+	ATTRIBUTE_ENTRY(MissileThruster, ThrusterAcceleration,		thrusterAcceleration)
+};
+
+MissileThruster::AttributeIndexSet
+	MissileThruster::AttributeIndex(
+		ELEMENTS(MissileThruster::AttributePointers),
+		MissileThruster::AttributePointers,
+		Subsystem::AttributeIndex
+	);
+
+MissileThruster::SharedData
+	MissileThruster::DefaultData(
+		MissileThruster::ClassDerivations,
+		Subsystem::MessageHandlers,
+		MissileThruster::AttributeIndex,
+		MissileThruster::StateCount
+	);
+
+//
+//#############################################################################
+// Construction (binary @004be7c4).  The const burn/thrust envelope streams
+// from the missile resource in the binary; staged defaults here.
+//#############################################################################
+//
+MissileThruster::MissileThruster(
+	Missile				*owner,
+	int					subsystem_ID,
+	SubsystemResource	*subsystem_resource
+):
+	Subsystem(
+		owner,
+		subsystem_ID,
+		"MissleThruster",
+		(RegisteredClass::ClassID)ThrusterClassID,
+		DefaultData
+	),
+	thrusterAcceleration(
+		(subsystem_resource != NULL)
+			? subsystem_resource->thrusterAcceleration
+			: DefaultThrusterAcceleration
+	),
+	thrusterClimb(
+		(subsystem_resource != NULL)
+			? subsystem_resource->thrusterClimb
+			: DefaultThrusterClimb
+	)
+{
+	Check(owner);
+
+	burnTimeRemaining		= (subsystem_resource != NULL)
+								? subsystem_resource->burnTime
+								: DefaultBurnTime;
+	maxThrusterRotationRate	= 0.0f;
+
+	Check_Fpu();
+}
+
+MissileThruster::~MissileThruster()
+{
+}
+
+Logical
+	MissileThruster::TestInstance() const
+{
+	return IsDerivedFrom(ClassDerivations);
+}
+
+//
+//#############################################################################
+// MissileThrusterSimulation -- bleed the burn.  (Driven from the Missile's
+// MoveAndCollide integrator, not a roster Performance -- the binary folds
+// the thruster work into the integrate pass.)
+//#############################################################################
+//
+void
+	MissileThruster::MissileThrusterSimulation(Scalar time_slice)
+{
+	Check(this);
+
+	if (burnTimeRemaining > 0.0f)
+	{
+		burnTimeRemaining -= time_slice;
+		if (burnTimeRemaining < 0.0f)
+		{
+			burnTimeRemaining = 0.0f;
+		}
+	}
+}