//===========================================================================//
// File:	projtile.cpp                                                        //
// Project: BattleTech           Brick: Mech weapons                          //
// Contents: Projectile -- the flying-round entity base (Missile derives)    //
//---------------------------------------------------------------------------//
// Copyright (C) 1995, Virtual World Entertainment, Inc.                     //
// All Rights reserved worldwide                                             //
// This unpublished sourcecode is PROPRIETARY and CONFIDENTIAL               //
//===========================================================================//
//
// PARTIAL (binary ctor @004be1bc, vtable @00512a5c, 0x340 bytes): the base
// chains the Mover make path -- the MakeMessage's resourceID is the
// projectile GameModel, so the Mover ctor streams the authored mass / drag /
// inertia.  The tracer/ballistic body (the unguided MoveAndCollide, smoke
// trail, PROJTILE.TCP surface) joins the autocannon wave; the Missile
// subclass carries the only flying rounds in the 4.10 pod content.
//

#include <bt.hpp>
#pragma hdrstop

#if !defined(PROJTILE_HPP)
#	include <projtile.hpp>
#endif

Derivation
	Projectile::ClassDerivations(
		Mover::ClassDerivations,
		"Projectile"
	);

Projectile::SharedData
	Projectile::DefaultData(
		Projectile::ClassDerivations,
		Mover::MessageHandlers,
		Mover::AttributeIndex,
		1,
		(Entity::MakeHandler)Projectile::Make
	);

Projectile*
	Projectile::Make(MakeMessage *creation_message)
{
	return new Projectile(creation_message);
}

Projectile::Projectile(
	MakeMessage	*creation_message,
	SharedData	&shared_data
):
	Mover(creation_message, shared_data)
{
	Check(creation_message);

	//
	// LOAD-BEARING: the Entity base ctor ALLOCATES the raw damage-zone
	// pointer array whenever the resource family carries a DamageZoneStream
	// (entity.cpp:1032) and leaves the slots UNINITIALIZED -- filling them
	// is the derived entity's job (the Mech's Pass 3).  A projectile has no
	// zones, so NULL every slot; otherwise ~Entity's teardown walks the
	// array and deletes 20 garbage pointers (virtual dtor calls through
	// trash vtables -- the 5.3.18 death-row page fault, EIP-in-heap after
	// the subsystem dtors completed).
	//
	if (damageZones != NULL)
	{
		for (int dz = 0; dz < damageZoneCount; ++dz)
		{
			damageZones[dz] = NULL;
		}
	}

	Check_Fpu();
}

Projectile::~Projectile()
{
}

Logical
	Projectile::TestInstance() const
{
	return IsDerivedFrom(ClassDerivations);
}