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Initial commit: bt411 -- standalone Windows BattleTech (Tesla 4.10 port)

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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>
This commit is contained in:
arcattack
2026-07-05 21:03:40 -05:00
co-authored by Claude Opus 4.8
commit 7b7d465e5e
4192 changed files with 604371 additions and 0 deletions
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engine/MUNGA_L4/L4TRACE.cpp
+127
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#include "mungal4.h"
#pragma hdrstop
#include "..\munga\style.h"
void* Get_Caller(int level)
{
char *address;
__asm MOV address, EBP;
while (level--)
{
Check_Pointer(address);
address = *(char**)address;
}
Check_Pointer(address);
return *(char**)(address+4);
}
#if defined(USE_ACTIVE_PROFILE)
#undef inportb
#undef outportb
//
// table of data representing bits on the parallel port at 0x378 (usually LPT1)
// DO NOT ALTER THIS DATA - IT REQUIRES LOTS OF SCHEMATIC TRACING TO DUPLICATE
//
struct ParallelBit
{
unsigned int port;
Byte mask;
int sense;
};
ParallelBit Bit_Table[12] =
{
{0x378, 0x80, 0x00},
{0x378, 0x40, 0x00},
{0x378, 0x20, 0x00},
{0x378, 0x10, 0x00},
{0x37a, 0x08, 0x01},
{0x37a, 0x04, 0x00},
{0x37a, 0x02, 0x01},
{0x37a, 0x01, 0x01},
{0x378, 0x08, 0x00},
{0x378, 0x04, 0x00},
{0x378, 0x02, 0x00},
{0x378, 0x01, 0x00}
};
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
void BitTrace::SetLineImplementation(Byte line)
{
Verify(line < ELEMENTS(Bit_Table));
//
//------------------------------------------------------------------
// read the current value of the appropriate port
//------------------------------------------------------------------
//
Byte port_value = inportb(Bit_Table[line].port);
//
//------------------------------------------------------------------
// set the appropriate bit, taking into account the hardware sense
//------------------------------------------------------------------
//
if (!Bit_Table[line].sense)
{
port_value |= Bit_Table[line].mask;
}
else
{
port_value &= (Byte)(~Bit_Table[line].mask);
}
//
//------------------------------------------------------------------
// put the modified value into the appropriate port
//------------------------------------------------------------------
//
outportb(Bit_Table[line].port, port_value);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
void BitTrace::ClearLineImplementation(Byte line)
{
Verify(line < ELEMENTS(Bit_Table));
//
//------------------------------------------------------------------
// read the current value of the appropriate port
//------------------------------------------------------------------
//
Byte port_value = inportb(Bit_Table[line].port);
//
//------------------------------------------------------------------
// clear the appropriate bit, taking into account the hardware sense
//------------------------------------------------------------------
//
if (!Bit_Table[line].sense)
{
port_value &= (Byte)(~Bit_Table[line].mask);
}
else
{
port_value |= Bit_Table[line].mask;
}
//
//------------------------------------------------------------------
// put the modified value into the appropriate port
//------------------------------------------------------------------
//
outportb(Bit_Table[line].port, port_value);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
Logical
BitTrace::IsLineValidImplementation(Byte line)
{
return line<ELEMENTS(Bit_Table);
}
#endif