164 lines
2.3 KiB
164 lines
2.3 KiB
/*** |
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* |
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* Copyright (c) 1996-2002, Valve LLC. All rights reserved. |
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* |
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* This product contains software technology licensed from Id |
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* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc. |
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* All Rights Reserved. |
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* |
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* Use, distribution, and modification of this source code and/or resulting |
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* object code is restricted to non-commercial enhancements to products from |
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* Valve LLC. All other use, distribution, or modification is prohibited |
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* without written permission from Valve LLC. |
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* |
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****/ |
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// |
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// parsemsg.cpp |
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// |
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typedef unsigned char byte; |
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#define true 1 |
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static byte *gpBuf; |
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static int giSize; |
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static int giRead; |
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static int giBadRead; |
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void BEGIN_READ( void *buf, int size ) |
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{ |
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giRead = 0; |
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giBadRead = 0; |
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giSize = size; |
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gpBuf = (byte*)buf; |
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} |
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int READ_CHAR( void ) |
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{ |
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int c; |
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if( giRead + 1 > giSize ) |
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{ |
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giBadRead = true; |
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return -1; |
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} |
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c = (signed char)gpBuf[giRead]; |
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giRead++; |
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return c; |
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} |
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int READ_BYTE( void ) |
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{ |
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int c; |
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if( giRead + 1 > giSize ) |
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{ |
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giBadRead = true; |
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return -1; |
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} |
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c = (unsigned char)gpBuf[giRead]; |
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giRead++; |
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return c; |
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} |
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int READ_SHORT( void ) |
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{ |
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int c; |
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if( giRead + 2 > giSize ) |
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{ |
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giBadRead = true; |
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return -1; |
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} |
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c = (short)( gpBuf[giRead] + ( gpBuf[giRead + 1] << 8 ) ); |
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giRead += 2; |
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return c; |
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} |
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int READ_WORD( void ) |
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{ |
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return READ_SHORT(); |
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} |
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int READ_LONG( void ) |
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{ |
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int c; |
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if( giRead + 4 > giSize ) |
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{ |
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giBadRead = true; |
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return -1; |
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} |
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c = gpBuf[giRead] + ( gpBuf[giRead + 1] << 8 ) + ( gpBuf[giRead + 2] << 16 ) + ( gpBuf[giRead + 3] << 24 ); |
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giRead += 4; |
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return c; |
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} |
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float READ_FLOAT( void ) |
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{ |
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union |
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{ |
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byte b[4]; |
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float f; |
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int l; |
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} dat; |
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dat.b[0] = gpBuf[giRead]; |
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dat.b[1] = gpBuf[giRead + 1]; |
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dat.b[2] = gpBuf[giRead + 2]; |
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dat.b[3] = gpBuf[giRead + 3]; |
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giRead += 4; |
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//dat.l = LittleLong( dat.l ); |
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return dat.f; |
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} |
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char* READ_STRING( void ) |
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{ |
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static char string[2048]; |
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int l, c; |
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string[0] = 0; |
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l = 0; |
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do |
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{ |
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if( giRead+1 > giSize ) |
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break; // no more characters |
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c = READ_BYTE(); |
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if( c == -1 || c == 0 ) |
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break; |
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string[l] = c; |
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l++; |
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}while( l < sizeof(string) - 1 ); |
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string[l] = 0; |
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return string; |
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} |
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float READ_COORD( void ) |
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{ |
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return (float)( READ_SHORT() * ( 1.0 / 8 ) ); |
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} |
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float READ_ANGLE( void ) |
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{ |
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return (float)( READ_CHAR() * ( 360.0 / 256 ) ); |
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} |
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float READ_HIRESANGLE( void ) |
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{ |
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return (float)( READ_SHORT() * ( 360.0 / 65536 ) ); |
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}
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