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dhewm3-sdk/idlib/Lib.cpp
Daniel Gibson 53db277bae Make it build as SDK 
I created this repo from the original dhewm3 repo, but I used
git filter-branch to kill all the files that are not needed to just
build base.dll and d3xp.dll (or .so or .dylib or whatever).
So this is basically just the files the original Doom3 SDK had, but
taken from dhewm3 instead (and thus GPL licensed and patched for
64bit-support etc) + some dhewm3 specific stuff + CMakeLists.txt
to build them.

The git filter-branch details:

filter-branch -f --prune-empty --tree-filter /tmp/killkill.sh @

## /tmp/killkill.sh:

#!/bin/sh

find . -exec /tmp/removeothers.sh {} \;

exit 0

## /tmp/removeothers.sh:

#!/bin/bash

FNAME="$1"

if [[ $FNAME == \./\.git* ]] || [[ $FNAME == \./d3xp/* ]] || [[ $FNAME == \./game/* ]]
then
	#echo "ignoring $FNAME"
	exit 0
fi

if ! grep -Fxq "$FNAME" /tmp/d3sdklist.txt
then
	#echo "REMOVING $FNAME"
	rm -rf "$FNAME"
fi

exit 0

## /tmp/d3sdklist.txt was is just a textfile with one path per line with
   all the files (and directories!) I wanted to keep, like:

.
..
./sys/platform.h
./framework/Game.h
./config.h.in
./CMakeLists.txt
## ... and all the relevant files from the SDK
2018-08-26 01:43:10 +02:00

529 lines
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/*
===========================================================================
Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
Doom 3 Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Doom 3 Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#if defined( MACOS_X ) || defined(__unix__)
#include <signal.h>
#include <sys/types.h>
#endif
#ifndef _MSC_VER
#include <unistd.h>
#endif
// DG: I don't want a build dependency on SDL for mods just for SDL_endian.h,
// so I copied (most of) it into sys/:
#include "sys/Stub_SDL_endian.h"
#include "sys/platform.h"
#include "idlib/math/Vector.h"
#include "idlib/math/Polynomial.h"
#include "idlib/Str.h"
#include "idlib/Dict.h"
#include "framework/Common.h"
#include "idlib/Lib.h"
/*
===============================================================================
idLib
===============================================================================
*/
idSys * idLib::sys = NULL;
idCommon * idLib::common = NULL;
idCVarSystem * idLib::cvarSystem = NULL;
idFileSystem * idLib::fileSystem = NULL;
int idLib::frameNumber = 0;
/*
================
idLib::Init
================
*/
void idLib::Init( void ) {
assert( sizeof( bool ) == 1 );
// assumptions from the scripting compiler/interpreter
assert( sizeof( float ) == sizeof( int ) );
assert( sizeof( idVec3 ) == sizeof( float ) * 3 );
// initialize memory manager
Mem_Init();
// init string memory allocator
idStr::InitMemory();
// initialize generic SIMD implementation
idSIMD::Init();
// initialize math
idMath::Init();
// test idMatX
//idMatX::Test();
// test idPolynomial
idPolynomial::Test();
// initialize the dictionary string pools
idDict::Init();
}
/*
================
idLib::ShutDown
================
*/
void idLib::ShutDown( void ) {
// shut down the dictionary string pools
idDict::Shutdown();
// shut down the string memory allocator
idStr::ShutdownMemory();
// shut down the SIMD engine
idSIMD::Shutdown();
// shut down the memory manager
Mem_Shutdown();
}
/*
===============================================================================
Colors
===============================================================================
*/
idVec4 colorBlack = idVec4( 0.00f, 0.00f, 0.00f, 1.00f );
idVec4 colorWhite = idVec4( 1.00f, 1.00f, 1.00f, 1.00f );
idVec4 colorRed = idVec4( 1.00f, 0.00f, 0.00f, 1.00f );
idVec4 colorGreen = idVec4( 0.00f, 1.00f, 0.00f, 1.00f );
idVec4 colorBlue = idVec4( 0.00f, 0.00f, 1.00f, 1.00f );
idVec4 colorYellow = idVec4( 1.00f, 1.00f, 0.00f, 1.00f );
idVec4 colorMagenta= idVec4( 1.00f, 0.00f, 1.00f, 1.00f );
idVec4 colorCyan = idVec4( 0.00f, 1.00f, 1.00f, 1.00f );
idVec4 colorOrange = idVec4( 1.00f, 0.50f, 0.00f, 1.00f );
idVec4 colorPurple = idVec4( 0.60f, 0.00f, 0.60f, 1.00f );
idVec4 colorPink = idVec4( 0.73f, 0.40f, 0.48f, 1.00f );
idVec4 colorBrown = idVec4( 0.40f, 0.35f, 0.08f, 1.00f );
idVec4 colorLtGrey = idVec4( 0.75f, 0.75f, 0.75f, 1.00f );
idVec4 colorMdGrey = idVec4( 0.50f, 0.50f, 0.50f, 1.00f );
idVec4 colorDkGrey = idVec4( 0.25f, 0.25f, 0.25f, 1.00f );
static dword colorMask[2] = { 255, 0 };
/*
================
ColorFloatToByte
================
*/
ID_INLINE static byte ColorFloatToByte( float c ) {
return (byte) ( ( (dword) ( c * 255.0f ) ) & colorMask[FLOATSIGNBITSET(c)] );
}
/*
================
PackColor
================
*/
dword PackColor( const idVec4 &color ) {
dword dw, dx, dy, dz;
dx = ColorFloatToByte( color.x );
dy = ColorFloatToByte( color.y );
dz = ColorFloatToByte( color.z );
dw = ColorFloatToByte( color.w );
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
return ( dx << 0 ) | ( dy << 8 ) | ( dz << 16 ) | ( dw << 24 );
#else
return ( dx << 24 ) | ( dy << 16 ) | ( dz << 8 ) | ( dw << 0 );
#endif
}
/*
================
UnpackColor
================
*/
void UnpackColor( const dword color, idVec4 &unpackedColor ) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
unpackedColor.Set( ( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 24 ) & 255 ) * ( 1.0f / 255.0f ) );
#else
unpackedColor.Set( ( ( color >> 24 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ) );
#endif
}
/*
================
PackColor
================
*/
dword PackColor( const idVec3 &color ) {
dword dx, dy, dz;
dx = ColorFloatToByte( color.x );
dy = ColorFloatToByte( color.y );
dz = ColorFloatToByte( color.z );
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
return ( dx << 0 ) | ( dy << 8 ) | ( dz << 16 );
#else
return ( dy << 16 ) | ( dz << 8 ) | ( dx << 0 );
#endif
}
/*
================
UnpackColor
================
*/
void UnpackColor( const dword color, idVec3 &unpackedColor ) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
unpackedColor.Set( ( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ) );
#else
unpackedColor.Set( ( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ) );
#endif
}
/*
===============
idLib::Error
===============
*/
void idLib::Error( const char *fmt, ... ) {
va_list argptr;
char text[MAX_STRING_CHARS];
va_start( argptr, fmt );
idStr::vsnPrintf( text, sizeof( text ), fmt, argptr );
va_end( argptr );
common->Error( "%s", text );
}
/*
===============
idLib::Warning
===============
*/
void idLib::Warning( const char *fmt, ... ) {
va_list argptr;
char text[MAX_STRING_CHARS];
va_start( argptr, fmt );
idStr::vsnPrintf( text, sizeof( text ), fmt, argptr );
va_end( argptr );
common->Warning( "%s", text );
}
/*
===============================================================================
Byte order functions
===============================================================================
*/
/*
================
FloatSwap
================
*/
ID_INLINE static float FloatSwap( float f ) {
union {
float f;
unsigned int u;
} id_attribute((may_alias)) dat;
dat.f = f;
dat.u = SDL_Swap32(dat.u);
return dat.f;
}
/*
=====================================================================
RevBytesSwap
Reverses byte order in place.
INPUTS
bp bytes to reverse
elsize size of the underlying data type
elcount number of elements to swap
RESULTS
Reverses the byte order in each of elcount elements.
===================================================================== */
ID_INLINE static void RevBytesSwap( void *bp, int elsize, int elcount ) {
register unsigned char *p, *q;
p = ( unsigned char * ) bp;
if ( elsize == 2 ) {
q = p + 1;
while ( elcount-- ) {
*p ^= *q;
*q ^= *p;
*p ^= *q;
p += 2;
q += 2;
}
return;
}
while ( elcount-- ) {
q = p + elsize - 1;
while ( p < q ) {
*p ^= *q;
*q ^= *p;
*p ^= *q;
++p;
--q;
}
p += elsize >> 1;
}
}
/*
=====================================================================
RevBytesSwap
Reverses byte order in place, then reverses bits in those bytes
INPUTS
bp bitfield structure to reverse
elsize size of the underlying data type
RESULTS
Reverses the bitfield of size elsize.
===================================================================== */
ID_INLINE static void RevBitFieldSwap( void *bp, int elsize) {
int i;
unsigned char *p, t, v;
LittleRevBytes( bp, elsize, 1 );
p = (unsigned char *) bp;
while ( elsize-- ) {
v = *p;
t = 0;
for (i = 7; i; i--) {
t <<= 1;
v >>= 1;
t |= v & 1;
}
*p++ = t;
}
}
/*
================
SixtetsForIntLittle
================
*/
ID_INLINE static void SixtetsForIntLittle( byte *out, int src) {
byte *b = (byte *)&src;
out[0] = ( b[0] & 0xfc ) >> 2;
out[1] = ( ( b[0] & 0x3 ) << 4 ) + ( ( b[1] & 0xf0 ) >> 4 );
out[2] = ( ( b[1] & 0xf ) << 2 ) + ( ( b[2] & 0xc0 ) >> 6 );
out[3] = b[2] & 0x3f;
}
/*
================
SixtetsForIntBig
TTimo: untested - that's the version from initial base64 encode
================
*/
ID_INLINE static void SixtetsForIntBig( byte *out, int src) {
for( int i = 0 ; i < 4 ; i++ ) {
out[i] = src & 0x3f;
src >>= 6;
}
}
/*
================
IntForSixtetsLittle
================
*/
ID_INLINE static int IntForSixtetsLittle( byte *in ) {
int ret = 0;
byte *b = (byte *)&ret;
b[0] |= in[0] << 2;
b[0] |= ( in[1] & 0x30 ) >> 4;
b[1] |= ( in[1] & 0xf ) << 4;
b[1] |= ( in[2] & 0x3c ) >> 2;
b[2] |= ( in[2] & 0x3 ) << 6;
b[2] |= in[3];
return ret;
}
/*
================
IntForSixtetsBig
TTimo: untested - that's the version from initial base64 decode
================
*/
ID_INLINE static int IntForSixtetsBig( byte *in ) {
int ret = 0;
ret |= in[0];
ret |= in[1] << 6;
ret |= in[2] << 2*6;
ret |= in[3] << 3*6;
return ret;
}
/*
==========
Swap_IsBigEndian
==========
*/
bool Swap_IsBigEndian( void ) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
return false;
#else
return true;
#endif
}
short BigShort( short l ) {
return SDL_SwapBE16(l);
}
short LittleShort( short l ) {
return SDL_SwapLE16(l);
}
int BigInt( int l ) {
return SDL_SwapBE32(l);
}
int LittleInt( int l ) {
return SDL_SwapLE32(l);
}
float BigFloat( float l ) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
return FloatSwap(l);
#else
return l;
#endif
}
float LittleFloat( float l ) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
return l;
#else
return FloatSwap(l);
#endif
}
void BigRevBytes( void *bp, int elsize, int elcount ) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
RevBytesSwap(bp, elsize, elcount);
#else
return;
#endif
}
void LittleRevBytes( void *bp, int elsize, int elcount ){
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
return;
#else
RevBytesSwap(bp, elsize, elcount);
#endif
}
void LittleBitField( void *bp, int elsize ){
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
return;
#else
RevBitFieldSwap(bp, elsize);
#endif
}
void SixtetsForInt( byte *out, int src) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
SixtetsForIntLittle(out, src);
#else
SixtetsForIntBig(out, src);
#endif
}
int IntForSixtets( byte *in ) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
return IntForSixtetsLittle(in);
#else
return IntForSixtetsBig(in);
#endif
}
/*
===============================================================================
Assertion
===============================================================================
*/
void AssertFailed( const char *file, int line, const char *expression ) {
idLib::sys->DebugPrintf( "\n\nASSERTION FAILED!\n%s(%d): '%s'\n", file, line, expression );
#ifdef _MSC_VER
__debugbreak();
_exit(1);
#elif defined(__unix__)
// __builtin_trap() causes an illegal instruction which is kinda ugly.
// especially if you'd like to be able to continue after the assertion during debugging
raise(SIGTRAP); // this will break into the debugger.
#elif defined( __GNUC__ )
__builtin_trap();
_exit(1);
#endif
}
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