Files
BT412/game/reconstructed/btl4mppr.hpp
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arcattackandClaude Opus 4.8 7b7d465e5e Initial commit: bt411 -- standalone Windows BattleTech (Tesla 4.10 port)
Clean, self-contained extraction of the BattleTech-specific work from the
reverse-engineering workspace -- engine + game + content + build, with nothing
from Red Planet or the raw archive dumps. Builds green (Win32) and runs the
single-player drive->animate->target->fire->damage->destroy loop out of the box.

Layout:
  engine/   MUNGA + MUNGA_L4 shared 2007 engine, carrying our BT render/loader
            work (bgfload/L4D3D/L4VIDEO: BSL bit-slice decode, LOD/ground/shadow
            models) + image codec; the minimal rp/ headers the audio HAL needs
  game/     reconstructed BT logic + surviving-original BT source + fwd shims
            + WinMain launcher
  content/  full runtime tree (BTL4.RES, VIDEO/, GAUGE/, AUDIO/, eggs, BTDPL.INI)
  docs/     format specs + reconstruction ledgers
  reference/ raw Ghidra pseudocode (recon source-of-truth) + decomp exporter
  tools/    MP console emulator + map/resource scanners

One top-level CMake builds munga_engine lib + bt410_l4 game lib + btl4.exe.
All paths relativized (186 fwd shims + ~437 CMake abs paths -> repo-relative);
DXSDK is the one external, overridable via -DDXSDK. Verified: builds to a
byte-identical 2.27MB exe and runs combat (TARGET DESTROYED, 0 crashes) against
the bundled content.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-05 21:03:40 -05:00

315 lines
11 KiB
C++

//===========================================================================//
// File: btl4mppr.hpp //
// Project: BattleTech Brick: BattleTech LBE Application //
// Contents: The L4-application-side Mech controls mappers -- the platform //
// (cockpit-hardware) layer that wires physical Thrustmaster / RIO //
// panel inputs onto the in-Mech MechControlsMapper demands, the //
// target-range zoom, control/display modes and the pilot hotbox. //
//---------------------------------------------------------------------------//
// Date Who Modification //
// -------- --- ---------------------------------------------------------- //
// //
//---------------------------------------------------------------------------//
// Copyright (C) 1995, Virtual World Entertainment, Inc. //
// All Rights reserved worldwide //
// This unpublished sourcecode is PROPRIETARY and CONFIDENTIAL //
//===========================================================================//
//
// RECONSTRUCTED -- no header survived for this TU. BTL4.MAK lists btl4mppr.obj
// and the class names are recovered from the .rdata string pool
// ("L4MechControlsMapper" @0051e1eb, "MechThrustmasterMapper" @0051e2b3,
// "MechRIOMapper" @0051e2e3). The shape mirrors the surviving Red Planet
// analog RP_L4\RPL4MPPR.h (L4VTVControlsMapper / VTVThrustmasterMapper /
// VTVRIOMapper) -- the only substitution is Mech for VTV and the in-Mech base
// MechControlsMapper (mechmppr.cpp) for VTVControlsMapper.
//
// Hierarchy (parallels RP exactly):
// Subsystem -> MechControlsMapper [mechmppr.cpp, already recovered]
// -> L4MechControlsMapper [this TU] ctor @004d17ac vtable @0051e440
// ├─ MechThrustmasterMapper ctor @004d21d0 vtable @0051e3f0
// └─ MechRIOMapper ctor @004d266c vtable @0051e3a0
//
#if !defined(BTL4MPPR_HPP)
# define BTL4MPPR_HPP
# if !defined(MECHMPPR_HPP)
# include <mechmppr.hpp>
# endif
class Mech;
class L4Lamp;
//
// ClassID stamped onto the in-Mech controls-mapper subsystem (the
// class_ID passed to the L4MechControlsMapper ctor). Recovered as 0x7dc
// (@004d21d0 / @004d266c call sites in btl4app.cpp).
//
enum { MechControlsMapperClassID = 0x7dc };
//##########################################################################
//#################### L4MechControlsMapper ##########################
//##########################################################################
//
// The platform-independent L4 layer. Adds the target-range "zoom"
// (exponential, driven from the panel), the mission-review mode watcher,
// and the configuration-time temporary event mappings. Pure-platform
// behaviour (which physical buttons do what) is supplied by the two
// derived mappers below.
//
class L4MechControlsMapper:
public MechControlsMapper
{
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Shared Data Support
//
public:
// WinTesla refactored the static derivation/handler objects behind
// Get* accessors (avoids static-init ordering bugs).
static Derivation *GetClassDerivations();
static SharedData DefaultData;
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Messaging Support
//
public:
enum {
KeypressMessageID = MechControlsMapper::NextMessageID,
StringMatchMessageID,
NextMessageID
};
void
KeypressMessageHandler( // @004d1bf0
ReceiverDataMessageOf<ControlsKey> *message
);
protected:
static const HandlerEntry MessageHandlerEntries[];
static MessageHandlerSet& GetMessageHandlers();
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Model Support
//
public:
void
InterpretControls(Scalar time_slice); // @004d196c
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Target-range "zoom"
//
public:
void
ZoomTargetRangeIn(), // @004d1b64
ZoomTargetRangeOut(); // @004d1b9c
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Control / display modes
//
public:
void
SetControlMode(int new_mode); // @004d1ae4 (mode-mask switch)
void
SetPresetMode(int group, int item); // @004d1b24 (preset mode-mask)
void
NotifyOfControlModeChange(int new_mode), // @004d195c (no-op)
NotifyOfConfigurationModeChange(Logical new_state); // @004d1964 (no-op)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Configuration support (overrides MechControlsMapper traps)
//
public:
void
CreateTemporaryEventMappings( // @004d1840
Receiver *receiver,
Receiver::MessageID config_message_id
),
RemoveTemporaryEventMappings(); // @004d18dc
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Construction and Destruction Support
//
public:
L4MechControlsMapper( // @004d17ac
Mech *owner,
int subsystem_ID,
SubsystemResource *subsystem_resource,
ClassID class_ID,
SharedData &shared_data = DefaultData
);
~L4MechControlsMapper(); // @004d1814
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Protected data (object grows to >= 0x1bc)
//
protected:
Scalar
targetRangeExponentDemand, // @0x1a0 panel "zoom" demand (init 2.0, range 0..5)
targetRangeExponent; // @0x1a4 smoothed value -> mech target range (2^x)
int
previousMissionReviewMode; // @0x1a8 last-seen mech mission-review flag
//
// Per-platform input staging slots (filled by the derived ctor's
// controls-group .Add()s; the two platforms use them differently --
// Thrustmaster routes throttle scalars here, the RIO routes panel
// buttons here). Cleared to 0 by both derived ctors.
//
ControlsScalar
throttleForward; // @0x1ac
// NOTE (engine drift): the recovered code staged the reverse throttle in
// a ControlsScalar mapped to a "ScalarThrottleReverse" group that does
// NOT exist in the WinTesla LBE4ControlsManager. Reverse is a button in
// this engine generation, so this slot is a ControlsButton mapped to
// LBE4ControlsManager::ButtonThrottle1 (mirrors the era's L4MPPR.CPP).
ControlsButton
throttleReverse; // @0x1b0
ControlsScalar
leftPedal, // @0x1b4
rightPedal; // @0x1b8
};
//##########################################################################
//#################### MechThrustmasterMapper ########################
//##########################################################################
//
// Joystick + throttle + pedals "Thrustmaster" cockpit. Maps the analog
// throttle / pedal axes and the PC keyboard onto the Mech demands.
//
class MechThrustmasterMapper:
public L4MechControlsMapper
{
public:
static Derivation *GetClassDerivations(); // @0051dc78
static SharedData DefaultData; // @0051dcxx
typedef void
(MechThrustmasterMapper::*Performance)(Scalar time_slice);
void
InterpretControls(Scalar time_slice); // @004d2150
void
SetPerformance(Performance performance)
{
Check(this);
activePerformance = (Simulation::Performance)performance;
}
protected:
static const HandlerEntry MessageHandlerEntries[]; // {Keypress, 0x17}
static MessageHandlerSet MessageHandlers;
public:
MechThrustmasterMapper( // @004d21d0
Mech *owner,
int subsystem_ID,
SubsystemResource *subsystem_resource,
ClassID class_ID,
SharedData &shared_data = DefaultData
);
~MechThrustmasterMapper(); // @004d22b4
Logical
TestInstance() const; // @004d22e0
};
//##########################################################################
//########################### MechRIOMapper ##########################
//##########################################################################
//
// The full "RIO" / Cockpit panel: aux-equipment quadrant buttons, target
// hotbox, target-range zoom, control-mode and preset selection.
//
class MechRIOMapper:
public L4MechControlsMapper
{
public:
static Derivation *GetClassDerivations(); // @0051dd00
static SharedData DefaultData; // @0051dcxx
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Messaging Support
//
public:
enum {
Aux1QuadMessageID = L4MechControlsMapper::NextMessageID, // 3
Aux1Eng1MessageID, Aux1Eng2MessageID, Aux1Eng3MessageID, Aux1Eng4MessageID,
Aux2QuadMessageID, Aux2Eng1MessageID, Aux2Eng2MessageID, Aux2Eng3MessageID, Aux2Eng4MessageID,
Aux3QuadMessageID, Aux3Eng1MessageID, Aux3Eng2MessageID, Aux3Eng3MessageID, Aux3Eng4MessageID,
ZoomInMessageID, // 0x12
ZoomOutMessageID, // 0x13
HotboxMessageID, // pilot-target select
NextMessageID
};
void
Aux1QuadMessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d22fc
Aux1Eng1MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d231c
Aux1Eng2MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d233c
Aux1Eng3MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d235c
Aux1Eng4MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d237c
Aux2QuadMessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d239c
Aux2Eng1MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d23bc
Aux2Eng2MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d23dc
Aux2Eng3MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d23fc
Aux2Eng4MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d241c
Aux3QuadMessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d243c
Aux3Eng1MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d245c
Aux3Eng2MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d247c
Aux3Eng3MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d249c
Aux3Eng4MessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d24bc
ZoomInMessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d24dc
ZoomOutMessageHandler(ReceiverDataMessageOf<ControlsButton> *message), // @004d24f8
HotboxMessageHandler(ReceiverDataMessageOf<ControlsButton> *message); // @004d2574
protected:
static const HandlerEntry MessageHandlerEntries[]; // @0051dd30
static MessageHandlerSet MessageHandlers;
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Model Support
//
public:
typedef void
(MechRIOMapper::*Performance)(Scalar time_slice);
void
InterpretControls(Scalar time_slice); // @004d25c0
void
SetPerformance(Performance performance)
{
Check(this);
activePerformance = (Simulation::Performance)performance;
}
void
AddOrErase( // @004d25e8
unsigned int button_ID,
Receiver *target,
Receiver::MessageID message_ID
);
void
AddOrErase( // @004d262c
unsigned int button_ID,
ControlsButton *destination
);
public:
MechRIOMapper( // @004d266c
Mech *owner,
int subsystem_ID,
SubsystemResource *subsystem_resource,
ClassID class_ID,
SharedData &shared_data = DefaultData
);
~MechRIOMapper(); // @004d27cc
Logical
TestInstance() const; // @004d27f8
};
#endif