From 7cc6c9cbe613b7022ad3b5ae1a8a9bd7811e5e6a Mon Sep 17 00:00:00 2001 From: Tim Angus Date: Wed, 3 Jan 2001 22:43:20 +0000 Subject: 1.27 upgrade --- src/game/bg_lib.c | 1337 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1337 insertions(+) create mode 100644 src/game/bg_lib.c (limited to 'src/game/bg_lib.c') diff --git a/src/game/bg_lib.c b/src/game/bg_lib.c new file mode 100644 index 00000000..e55b47bd --- /dev/null +++ b/src/game/bg_lib.c @@ -0,0 +1,1337 @@ +// Copyright (C) 1999-2000 Id Software, Inc. +// +// Copyright (C) 1999-2000 Id Software, Inc. +// +// bg_lib,c -- standard C library replacement routines used by code +// compiled for the virtual machine + +/* + * Portions Copyright (C) 2000-2001 Tim Angus + * + * This program 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 2, or (at your option) + * any later version. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/* To assertain which portions are licensed under the GPL and which are + * licensed by Id Software, Inc. please run a diff between the equivalent + * versions of the "Tremulous" modification and the unmodified "Quake3" + * game source code. + */ + +#include "q_shared.h" + +/*- + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char sccsid[] = "@(#)qsort.c 8.1 (Berkeley) 6/4/93"; +#endif +static const char rcsid[] = + "$Id$"; +#endif /* LIBC_SCCS and not lint */ + +//typedef int cmp_t(const void *, const void *); +static char* med3(char *, char *, char *, cmp_t *); +static void swapfunc(char *, char *, int, int); + +#ifndef min +#define min(a, b) (a) < (b) ? a : b +#endif + +/* + * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function". + */ +#define swapcode(TYPE, parmi, parmj, n) { \ + long i = (n) / sizeof (TYPE); \ + register TYPE *pi = (TYPE *) (parmi); \ + register TYPE *pj = (TYPE *) (parmj); \ + do { \ + register TYPE t = *pi; \ + *pi++ = *pj; \ + *pj++ = t; \ + } while (--i > 0); \ +} + +#define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \ + es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1; + +static void +swapfunc(a, b, n, swaptype) + char *a, *b; + int n, swaptype; +{ + if(swaptype <= 1) + swapcode(long, a, b, n) + else + swapcode(char, a, b, n) +} + +#define swap(a, b) \ + if (swaptype == 0) { \ + long t = *(long *)(a); \ + *(long *)(a) = *(long *)(b); \ + *(long *)(b) = t; \ + } else \ + swapfunc(a, b, es, swaptype) + +#define vecswap(a, b, n) if ((n) > 0) swapfunc(a, b, n, swaptype) + +static char * +med3(a, b, c, cmp) + char *a, *b, *c; + cmp_t *cmp; +{ + return cmp(a, b) < 0 ? + (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a )) + :(cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c )); +} + +void +qsort(a, n, es, cmp) + void *a; + size_t n, es; + cmp_t *cmp; +{ + char *pa, *pb, *pc, *pd, *pl, *pm, *pn; + int d, r, swaptype, swap_cnt; + +loop: SWAPINIT(a, es); + swap_cnt = 0; + if (n < 7) { + for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es) + for (pl = pm; pl > (char *)a && cmp(pl - es, pl) > 0; + pl -= es) + swap(pl, pl - es); + return; + } + pm = (char *)a + (n / 2) * es; + if (n > 7) { + pl = a; + pn = (char *)a + (n - 1) * es; + if (n > 40) { + d = (n / 8) * es; + pl = med3(pl, pl + d, pl + 2 * d, cmp); + pm = med3(pm - d, pm, pm + d, cmp); + pn = med3(pn - 2 * d, pn - d, pn, cmp); + } + pm = med3(pl, pm, pn, cmp); + } + swap(a, pm); + pa = pb = (char *)a + es; + + pc = pd = (char *)a + (n - 1) * es; + for (;;) { + while (pb <= pc && (r = cmp(pb, a)) <= 0) { + if (r == 0) { + swap_cnt = 1; + swap(pa, pb); + pa += es; + } + pb += es; + } + while (pb <= pc && (r = cmp(pc, a)) >= 0) { + if (r == 0) { + swap_cnt = 1; + swap(pc, pd); + pd -= es; + } + pc -= es; + } + if (pb > pc) + break; + swap(pb, pc); + swap_cnt = 1; + pb += es; + pc -= es; + } + if (swap_cnt == 0) { /* Switch to insertion sort */ + for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es) + for (pl = pm; pl > (char *)a && cmp(pl - es, pl) > 0; + pl -= es) + swap(pl, pl - es); + return; + } + + pn = (char *)a + n * es; + r = min(pa - (char *)a, pb - pa); + vecswap(a, pb - r, r); + r = min(pd - pc, pn - pd - es); + vecswap(pb, pn - r, r); + if ((r = pb - pa) > es) + qsort(a, r / es, es, cmp); + if ((r = pd - pc) > es) { + /* Iterate rather than recurse to save stack space */ + a = pn - r; + n = r / es; + goto loop; + } +/* qsort(pn - r, r / es, es, cmp);*/ +} + +//================================================================================== + + +// this file is excluded from release builds because of intrinsics + +size_t strlen( const char *string ) { + const char *s; + + s = string; + while ( *s ) { + s++; + } + return s - string; +} + + +char *strcat( char *strDestination, const char *strSource ) { + char *s; + + s = strDestination; + while ( *s ) { + s++; + } + while ( *strSource ) { + *s++ = *strSource++; + } + *s = 0; + return strDestination; +} + +char *strcpy( char *strDestination, const char *strSource ) { + char *s; + + s = strDestination; + while ( *strSource ) { + *s++ = *strSource++; + } + *s = 0; + return strDestination; +} + + +int strcmp( const char *string1, const char *string2 ) { + while ( *string1 == *string2 && *string1 && *string2 ) { + string1++; + string2++; + } + return *string1 - *string2; +} + + +char *strchr( const char *string, int c ) { + while ( *string ) { + if ( *string == c ) { + return ( char * )string; + } + string++; + } + return (char *)0; +} + +char *strstr( const char *string, const char *strCharSet ) { + while ( *string ) { + int i; + + for ( i = 0 ; strCharSet[i] ; i++ ) { + if ( string[i] != strCharSet[i] ) { + break; + } + } + if ( !strCharSet[i] ) { + return (char *)string; + } + string++; + } + return (char *)0; +} + +#if !defined ( _MSC_VER ) && !defined ( __linux__ ) + +int tolower( int c ) { + if ( c >= 'A' && c <= 'Z' ) { + c += 'a' - 'A'; + } + return c; +} + + +int toupper( int c ) { + if ( c >= 'a' && c <= 'z' ) { + c += 'A' - 'a'; + } + return c; +} + +#endif +//#ifndef _MSC_VER + +void *memmove( void *dest, const void *src, size_t count ) { + int i; + + if ( dest > src ) { + for ( i = count-1 ; i >= 0 ; i-- ) { + ((char *)dest)[i] = ((char *)src)[i]; + } + } else { + for ( i = 0 ; i < count ; i++ ) { + ((char *)dest)[i] = ((char *)src)[i]; + } + } + return dest; +} + + +#if 0 + +double floor( double x ) { + return (int)(x + 0x40000000) - 0x40000000; +} + +void *memset( void *dest, int c, size_t count ) { + while ( count-- ) { + ((char *)dest)[count] = c; + } + return dest; +} + +void *memcpy( void *dest, const void *src, size_t count ) { + while ( count-- ) { + ((char *)dest)[count] = ((char *)src)[count]; + } + return dest; +} + +char *strncpy( char *strDest, const char *strSource, size_t count ) { + char *s; + + s = strDest; + while ( *strSource && count ) { + *s++ = *strSource++; + count--; + } + while ( count-- ) { + *s++ = 0; + } + return strDest; +} + +double sqrt( double x ) { + float y; + float delta; + float maxError; + + if ( x <= 0 ) { + return 0; + } + + // initial guess + y = x / 2; + + // refine + maxError = x * 0.001; + + do { + delta = ( y * y ) - x; + y -= delta / ( 2 * y ); + } while ( delta > maxError || delta < -maxError ); + + return y; +} + + +float sintable[1024] = { +0.000000,0.001534,0.003068,0.004602,0.006136,0.007670,0.009204,0.010738, +0.012272,0.013805,0.015339,0.016873,0.018407,0.019940,0.021474,0.023008, +0.024541,0.026075,0.027608,0.029142,0.030675,0.032208,0.033741,0.035274, +0.036807,0.038340,0.039873,0.041406,0.042938,0.044471,0.046003,0.047535, +0.049068,0.050600,0.052132,0.053664,0.055195,0.056727,0.058258,0.059790, 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sintable[1023-index]; + case 1: + return -sintable[index]; + case 2: + return -sintable[1023-index]; + } + return 0; +} + + +/* +void create_acostable( void ) { + int i; + FILE *fp; + float a; + + fp = fopen("c:\\acostable.txt", "w"); + fprintf(fp, "float acostable[] = {"); + for (i = 0; i < 1024; i++) { + if (!(i & 7)) + fprintf(fp, "\n"); + a = acos( (float) -1 + i / 512 ); + fprintf(fp, "%1.8f,", a); + } + fprintf(fp, "\n}\n"); + fclose(fp); +} +*/ + + +float acostable[] = { +3.14159265,3.07908248,3.05317551,3.03328655,3.01651113,3.00172442,2.98834964,2.97604422, +2.96458497,2.95381690,2.94362719,2.93393068,2.92466119,2.91576615,2.90720289,2.89893629, +2.89093699,2.88318015,2.87564455,2.86831188,2.86116621,2.85419358,2.84738169,2.84071962, +2.83419760,2.82780691,2.82153967,2.81538876,2.80934770,2.80341062,2.79757211,2.79182724, +2.78617145,2.78060056,2.77511069,2.76969824,2.76435988,2.75909250,2.75389319,2.74875926, 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+0.25065566,0.24265636,0.23438976,0.22582651,0.21693146,0.20766198,0.19796546,0.18777575, +0.17700769,0.16554844,0.15324301,0.13986823,0.12508152,0.10830610,0.08841715,0.06251018, +}; + +double acos( double x ) { + int index; + + if (x < -1) + x = -1; + if (x > 1) + x = 1; + index = (float) (1.0 + x) * 511.9; + return acostable[index]; +} + + +double atan2( double y, double x ) { + float base; + float temp; + float dir; + float test; + int i; + + if ( x < 0 ) { + if ( y >= 0 ) { + // quad 1 + base = M_PI / 2; + temp = x; + x = y; + y = -temp; + } else { + // quad 2 + base = M_PI; + x = -x; + y = -y; + } + } else { + if ( y < 0 ) { + // quad 3 + base = 3 * M_PI / 2; + temp = x; + x = -y; + y = temp; + } + } + + if ( y > x ) { + base += M_PI/2; + temp = x; + x = y; + y = temp; + dir = -1; + } else { + dir = 1; + } + + // calcualte angle in octant 0 + if ( x == 0 ) { + return base; + } + y /= x; + + for ( i = 0 ; i < 512 ; i++ ) { + test = sintable[i] / sintable[1023-i]; + if ( test > y ) { + break; + } + } + + return base + dir * i * ( M_PI/2048); +} + + +#endif + +double tan( double x ) { + return sin(x) / cos(x); +} + + +static int randSeed = 0; + +void srand( unsigned seed ) { + randSeed = seed; +} + +int rand( void ) { + randSeed = (69069 * randSeed + 1); + return randSeed & 0x7fff; +} + +double atof( const char *string ) { + float sign; + float value; + int c; + + + // skip whitespace + while ( *string <= ' ' ) { + if ( !*string ) { + return 0; + } + string++; + } + + // check sign + switch ( *string ) { + case '+': + string++; + sign = 1; + break; + case '-': + string++; + sign = -1; + break; + default: + sign = 1; + break; + } + + // read digits + value = 0; + c = string[0]; + if ( c != '.' ) { + do { + c = *string++; + if ( c < '0' || c > '9' ) { + break; + } + c -= '0'; + value = value * 10 + c; + } while ( 1 ); + } else { + string++; + } + + // check for decimal point + if ( c == '.' ) { + double fraction; + + fraction = 0.1; + do { + c = *string++; + if ( c < '0' || c > '9' ) { + break; + } + c -= '0'; + value += c * fraction; + fraction *= 0.1; + } while ( 1 ); + + } + + // not handling 10e10 notation... + + return value * sign; +} + +double _atof( const char **stringPtr ) { + const char *string; + float sign; + float value; + int c; + + string = *stringPtr; + + // skip whitespace + while ( *string <= ' ' ) { + if ( !*string ) { + *stringPtr = string; + return 0; + } + string++; + } + + // check sign + switch ( *string ) { + case '+': + string++; + sign = 1; + break; + case '-': + string++; + sign = -1; + break; + default: + sign = 1; + break; + } + + // read digits + value = 0; + if ( string[0] != '.' ) { + do { + c = *string++; + if ( c < '0' || c > '9' ) { + break; + } + c -= '0'; + value = value * 10 + c; + } while ( 1 ); + } + + // check for decimal point + if ( c == '.' ) { + double fraction; + + fraction = 0.1; + do { + c = *string++; + if ( c < '0' || c > '9' ) { + break; + } + c -= '0'; + value += c * fraction; + fraction *= 0.1; + } while ( 1 ); + + } + + // not handling 10e10 notation... + *stringPtr = string; + + return value * sign; +} + + +#if !defined( _MSC_VER ) && !defined( __linux__ ) + +int atoi( const char *string ) { + int sign; + int value; + int c; + + + // skip whitespace + while ( *string <= ' ' ) { + if ( !*string ) { + return 0; + } + string++; + } + + // check sign + switch ( *string ) { + case '+': + string++; + sign = 1; + break; + case '-': + string++; + sign = -1; + break; + default: + sign = 1; + break; + } + + // read digits + value = 0; + do { + c = *string++; + if ( c < '0' || c > '9' ) { + break; + } + c -= '0'; + value = value * 10 + c; + } while ( 1 ); + + // not handling 10e10 notation... + + return value * sign; +} + + +int _atoi( const char **stringPtr ) { + int sign; + int value; + int c; + const char *string; + + string = *stringPtr; + + // skip whitespace + while ( *string <= ' ' ) { + if ( !*string ) { + return 0; + } + string++; + } + + // check sign + switch ( *string ) { + case '+': + string++; + sign = 1; + break; + case '-': + string++; + sign = -1; + break; + default: + sign = 1; + break; + } + + // read digits + value = 0; + do { + c = *string++; + if ( c < '0' || c > '9' ) { + break; + } + c -= '0'; + value = value * 10 + c; + } while ( 1 ); + + // not handling 10e10 notation... + + *stringPtr = string; + + return value * sign; +} + +int abs( int n ) { + return n < 0 ? -n : n; +} + +double fabs( double x ) { + return x < 0 ? -x : x; +} + + + +//========================================================= + + +#define ALT 0x00000001 /* alternate form */ +#define HEXPREFIX 0x00000002 /* add 0x or 0X prefix */ +#define LADJUST 0x00000004 /* left adjustment */ +#define LONGDBL 0x00000008 /* long double */ +#define LONGINT 0x00000010 /* long integer */ +#define QUADINT 0x00000020 /* quad integer */ +#define SHORTINT 0x00000040 /* short integer */ +#define ZEROPAD 0x00000080 /* zero (as opposed to blank) pad */ +#define FPT 0x00000100 /* floating point number */ + +#define to_digit(c) ((c) - '0') +#define is_digit(c) ((unsigned)to_digit(c) <= 9) +#define to_char(n) ((n) + '0') + +void AddInt( char **buf_p, int val, int width, int flags ) { + char text[32]; + int digits; + int signedVal; + char *buf; + + digits = 0; + signedVal = val; + if ( val < 0 ) { + val = -val; + } + do { + text[digits++] = '0' + val % 10; + val /= 10; + } while ( val ); + + if ( signedVal < 0 ) { + text[digits++] = '-'; + } + + buf = *buf_p; + + if( !( flags & LADJUST ) ) { + while ( digits < width ) { + *buf++ = ( flags & ZEROPAD ) ? '0' : ' '; + width--; + } + } + + while ( digits-- ) { + *buf++ = text[digits]; + width--; + } + + if( flags & LADJUST ) { + while ( width-- ) { + *buf++ = ( flags & ZEROPAD ) ? '0' : ' '; + } + } + + *buf_p = buf; +} + +void AddFloat( char **buf_p, float fval, int width, int prec ) { + char text[32]; + int digits; + float signedVal; + char *buf; + int val; + + // get the sign + signedVal = fval; + if ( fval < 0 ) { + fval = -fval; + } + + // write the float number + digits = 0; + val = (int)fval; + do { + text[digits++] = '0' + val % 10; + val /= 10; + } while ( val ); + + if ( signedVal < 0 ) { + text[digits++] = '-'; + } + + buf = *buf_p; + + while ( digits < width ) { + *buf++ = ' '; + width--; + } + + while ( digits-- ) { + *buf++ = text[digits]; + } + + *buf_p = buf; + + if (prec < 0) + prec = 6; + // write the fraction + digits = 0; + while (digits < prec) { + fval -= (int) fval; + fval *= 10.0; + val = (int) fval; + text[digits++] = '0' + val % 10; + } + + if (digits > 0) { + buf = *buf_p; + *buf++ = '.'; + for (prec = 0; prec < digits; prec++) { + *buf++ = text[prec]; + } + *buf_p = buf; + } +} + + +void AddString( char **buf_p, char *string, int width, int prec ) { + int size; + char *buf; + + buf = *buf_p; + + if ( string == NULL ) { + string = "(null)"; + prec = -1; + } + + if ( prec >= 0 ) { + for( size = 0; size < prec; size++ ) { + if( string[size] == '\0' ) { + break; + } + } + } + else { + size = strlen( string ); + } + + width -= size; + + while( size-- ) { + *buf++ = *string++; + } + + while( width-- > 0 ) { + *buf++ = ' '; + } + + *buf_p = buf; +} + +/* +vsprintf + +I'm not going to support a bunch of the more arcane stuff in here +just to keep it simpler. For example, the '*' and '$' are not +currently supported. I've tried to make it so that it will just +parse and ignore formats we don't support. +*/ +int vsprintf( char *buffer, const char *fmt, va_list argptr ) { + int *arg; + char *buf_p; + char ch; + int flags; + int width; + int prec; + int n; + char sign; + + buf_p = buffer; + arg = (int *)argptr; + + while( qtrue ) { + // run through the format string until we hit a '%' or '\0' + for ( ch = *fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++ ) { + *buf_p++ = ch; + } + if ( ch == '\0' ) { + goto done; + } + + // skip over the '%' + fmt++; + + // reset formatting state + flags = 0; + width = 0; + prec = -1; + sign = '\0'; + +rflag: + ch = *fmt++; +reswitch: + switch( ch ) { + case '-': + flags |= LADJUST; + goto rflag; + case '.': + n = 0; + while( is_digit( ( ch = *fmt++ ) ) ) { + n = 10 * n + ( ch - '0' ); + } + prec = n < 0 ? -1 : n; + goto reswitch; + case '0': + flags |= ZEROPAD; + goto rflag; + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + n = 0; + do { + n = 10 * n + ( ch - '0' ); + ch = *fmt++; + } while( is_digit( ch ) ); + width = n; + goto reswitch; + case 'c': + *buf_p++ = (char)*arg; + arg++; + break; + case 'd': + case 'i': + AddInt( &buf_p, *arg, width, flags ); + arg++; + break; + case 'f': + AddFloat( &buf_p, *(double *)arg, width, prec ); +#ifdef __LCC__ + arg += 1; // everything is 32 bit in my compiler +#else + arg += 2; +#endif + break; + case 's': + AddString( &buf_p, (char *)*arg, width, prec ); + arg++; + break; + case '%': + *buf_p++ = ch; + break; + default: + *buf_p++ = (char)*arg; + arg++; + break; + } + } + +done: + *buf_p = 0; + return buf_p - buffer; +} + + +/* this is really crappy */ +int sscanf( const char *buffer, const char *fmt, ... ) { + int cmd; + int **arg; + int count; + + arg = (int **)&fmt + 1; + count = 0; + + while ( *fmt ) { + if ( fmt[0] != '%' ) { + fmt++; + continue; + } + + cmd = fmt[1]; + fmt += 2; + + switch ( cmd ) { + case 'i': + case 'd': + case 'u': + **arg = _atoi( &buffer ); + break; + case 'f': + *(float *)*arg = _atof( &buffer ); + break; + } + arg++; + } + + return count; +} + +#endif -- cgit