CydandClaude Fable 5
fdf26d6e55
The death-row page fault was the THIRD strike of the uninitialized zone-array trap: the staged spawn rides the mech family's resourceID, whose DamageZoneStream makes the Entity base ctor allocate the 20-pointer damageZones[] array with UNINITIALIZED slots -- the Missile never fills it, and ~Entity's teardown deleted 20 garbage pointers through trash vtables (the dtor-chain bisect showed every dtor completing, then EIP-in-heap). Fix: the Projectile ctor NULLs every inherited zone slot. RULE, now three-crashes-proven: any entity subclass that does not FILL the allocated zone array must NULL it -- the engine never initializes the slots, on construction OR destruction. Missiles are now the default SRM delivery (BT_MISSILE_INSTANT=1 = the 5.3.18a instant-hit as an A/B opt-out). Verified: 20 launches -> 20 detonations -> 20 clean death-row teardowns over a 110s mutual fight, zero faults; smoke + novice regressions green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
//===========================================================================//
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// File: projtile.cpp //
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// Project: BattleTech Brick: Mech weapons //
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// Contents: Projectile -- the flying-round entity base (Missile derives) //
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//---------------------------------------------------------------------------//
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// Copyright (C) 1995, Virtual World Entertainment, Inc. //
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// All Rights reserved worldwide //
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// This unpublished sourcecode is PROPRIETARY and CONFIDENTIAL //
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//===========================================================================//
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//
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// PARTIAL (binary ctor @004be1bc, vtable @00512a5c, 0x340 bytes): the base
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// chains the Mover make path -- the MakeMessage's resourceID is the
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// projectile GameModel, so the Mover ctor streams the authored mass / drag /
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// inertia. The tracer/ballistic body (the unguided MoveAndCollide, smoke
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// trail, PROJTILE.TCP surface) joins the autocannon wave; the Missile
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// subclass carries the only flying rounds in the 4.10 pod content.
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//
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#include <bt.hpp>
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#pragma hdrstop
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#if !defined(PROJTILE_HPP)
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# include <projtile.hpp>
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#endif
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Derivation
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Projectile::ClassDerivations(
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Mover::ClassDerivations,
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"Projectile"
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);
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Projectile::SharedData
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Projectile::DefaultData(
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Projectile::ClassDerivations,
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Mover::MessageHandlers,
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Mover::AttributeIndex,
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1,
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(Entity::MakeHandler)Projectile::Make
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);
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Projectile*
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Projectile::Make(MakeMessage *creation_message)
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{
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return new Projectile(creation_message);
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}
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Projectile::Projectile(
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MakeMessage *creation_message,
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SharedData &shared_data
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):
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Mover(creation_message, shared_data)
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{
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Check(creation_message);
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//
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// LOAD-BEARING: the Entity base ctor ALLOCATES the raw damage-zone
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// pointer array whenever the resource family carries a DamageZoneStream
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// (entity.cpp:1032) and leaves the slots UNINITIALIZED -- filling them
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// is the derived entity's job (the Mech's Pass 3). A projectile has no
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// zones, so NULL every slot; otherwise ~Entity's teardown walks the
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// array and deletes 20 garbage pointers (virtual dtor calls through
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// trash vtables -- the 5.3.18 death-row page fault, EIP-in-heap after
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// the subsystem dtors completed).
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//
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if (damageZones != NULL)
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{
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for (int dz = 0; dz < damageZoneCount; ++dz)
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{
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damageZones[dz] = NULL;
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}
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}
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Check_Fpu();
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}
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Projectile::~Projectile()
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{
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}
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Logical
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Projectile::TestInstance() const
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{
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return IsDerivedFrom(ClassDerivations);
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}
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