arcattackandClaude Opus 4.8
7b7d465e5e
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>
141 lines
5.8 KiB
C++
141 lines
5.8 KiB
C++
#pragma once
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#include <iostream>
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#include "style.h"
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//##########################################################################
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//####################### MemoryStream ###############################
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//##########################################################################
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class MemoryStream
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{
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friend MemoryStream& MemoryStream_Write(MemoryStream *stream, const MemoryStream *input_stream);
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public:
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MemoryStream(void *stream_start, size_t stream_size, size_t initial_offset=0);
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size_t GetIndex() const { return currentPosition - streamStart; }
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size_t GetSize() const { return streamSize; }
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size_t GetBytesUsed() const { return currentPosition - streamStart; }
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void Rewind() { SetPointer(0U); }
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bool TestInstance() const;
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virtual void* GetPointer() const { return currentPosition; }
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virtual size_t GetBytesRemaining() const { return streamSize - GetBytesUsed(); }
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virtual void SetPointer(void *new_pointer) { currentPosition = (char*)new_pointer; }
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virtual void SetPointer(size_t index) { currentPosition = streamStart + index; }
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virtual bool AllocateBytes(size_t count) { return GetBytesRemaining() <= count; }
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virtual MemoryStream& RewindPointer(size_t count) { currentPosition -= count; return *this; }
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virtual MemoryStream& AdvancePointer(size_t count) { currentPosition += count; return *this; }
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virtual MemoryStream& ReadBytes(void *ptr, size_t number_of_bytes);
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virtual MemoryStream& WriteBytes(const void *ptr, size_t number_of_bytes);
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void operator= (void *new_pointer) { SetPointer(new_pointer); }
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void operator= (size_t index) { SetPointer(index); }
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MemoryStream& operator+= (size_t count) { return AdvancePointer(count); }
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MemoryStream& operator-= (size_t count) { return RewindPointer(count); }
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protected:
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char *streamStart, *currentPosition;
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size_t streamSize;
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};
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//--------------------------------------------------------------------------
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// Extraction operators
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//
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template <class T> inline MemoryStream& operator>>(MemoryStream &stream, T &output)
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{ return MemoryStream_Read(&stream, &output); }
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inline MemoryStream& MemoryStream_Read(MemoryStream* stream, char *output)
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{ return stream->ReadBytes(output, sizeof(*output)); }
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inline MemoryStream& MemoryStream_Read(MemoryStream* stream, unsigned char *output)
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{ return stream->ReadBytes(output, sizeof(*output)); }
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inline MemoryStream& MemoryStream_Read(MemoryStream* stream, short *output)
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{ return stream->ReadBytes(output, sizeof(*output)); }
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inline MemoryStream& MemoryStream_Read(MemoryStream* stream, unsigned short *output)
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{ return stream->ReadBytes(output, sizeof(*output)); }
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inline MemoryStream& MemoryStream_Read(MemoryStream* stream, int *output)
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{ return stream->ReadBytes(output, sizeof(*output)); }
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inline MemoryStream& MemoryStream_Read(MemoryStream* stream, unsigned int *output)
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{ return stream->ReadBytes(output, sizeof(*output)); }
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inline MemoryStream& MemoryStream_Read(MemoryStream* stream, long *output)
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{ return stream->ReadBytes(output, sizeof(*output)); }
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inline MemoryStream& MemoryStream_Read(MemoryStream* stream, unsigned long *output)
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{ return stream->ReadBytes(output, sizeof(*output)); }
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//--------------------------------------------------------------------------
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// Insertion operators
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//
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template <class T> inline MemoryStream& operator<<(MemoryStream &stream, const T &input)
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{ return MemoryStream_Write(&stream, &input); }
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inline MemoryStream& MemoryStream_Write(MemoryStream* stream, const char *input)
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{ return stream->WriteBytes(input, sizeof(*input)); }
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inline MemoryStream& MemoryStream_Write(MemoryStream* stream, const unsigned char *input)
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{ return stream->WriteBytes(input, sizeof(*input)); }
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inline MemoryStream& MemoryStream_Write(MemoryStream* stream, const short *input)
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{ return stream->WriteBytes(input, sizeof(*input)); }
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inline MemoryStream& MemoryStream_Write(MemoryStream* stream, const unsigned short *input)
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{ return stream->WriteBytes(input, sizeof(*input)); }
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inline MemoryStream& MemoryStream_Write(MemoryStream* stream, const int *input)
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{ return stream->WriteBytes(input, sizeof(*input)); }
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inline MemoryStream& MemoryStream_Write(MemoryStream* stream, const unsigned int *input)
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{ return stream->WriteBytes(input, sizeof(*input)); }
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inline MemoryStream& MemoryStream_Write(MemoryStream* stream, const long *input)
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{ return stream->WriteBytes(input, sizeof(*input)); }
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inline MemoryStream& MemoryStream_Write(MemoryStream* stream, const unsigned long *input)
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{ return stream->WriteBytes(input, sizeof(*input)); }
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MemoryStream& MemoryStream_Write(MemoryStream* stream, std::istream *input);
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MemoryStream& MemoryStream_Write(MemoryStream* stream, const MemoryStream* input_stream);
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#define MEM_STRM_WRITE_ENTRY(stream, name_list, type, name)\
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{\
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type name;\
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const char* data = (const char*)(name_list)->FindData(#name);\
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if (!data)\
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{\
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DEBUG_STREAM << "DYN_MEM_STRM_WRITE_ENTRY - #name == " << std::flush;\
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DEBUG_STREAM << #name << "\n" << std::flush;\
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Fail("DYN_MEM_STRM_WRITE_ENTRY - (name_list)->FindData(#name) == NULL");\
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}\
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Check_Pointer(data);\
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Convert_From_Ascii(data, &name);\
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stream << name;\
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}
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//##########################################################################
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//################### DynamicMemoryStream ############################
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//##########################################################################
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class DynamicMemoryStream : public MemoryStream
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{
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public:
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DynamicMemoryStream(size_t stream_size = 0);
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DynamicMemoryStream(void *stream_start, size_t stream_size, size_t initial_offset = 0);
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~DynamicMemoryStream();
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bool TestInstance() const { return ((size_t)(currentPosition - streamStart) <= streamSize && streamLength <= streamSize); }
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size_t GetBytesRemaining() const { return streamSize - GetBytesUsed(); }
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bool AllocateBytes(size_t count);
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MemoryStream& WriteBytes(const void *ptr, size_t number_of_bytes);
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private:
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size_t streamLength;
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bool ownsStream;
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}; |