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- /*
- Copyright (C) 2004 Michael Liebscher
- 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
- of the License, 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.
- */
- /*
- * random_number.c: Wolfenstein3-D random number generator.
- *
- * Author: Michael Liebscher <johnnycanuck@users.sourceforge.net>
- * Date: 2004
- *
- * Acknowledgement:
- * This code was derived from Wolfenstein3-D, and was originally
- * written by Id Software, Inc.
- *
- */
- #include "../wolfiphone.h"
- /* This is just John Carmack's table driven pseudo-random number generator */
- W32 rndtable[] = {
- 0, 8, 109, 220, 222, 241, 149, 107, 75, 248, 254, 140, 16, 66,
- 74, 21, 211, 47, 80, 242, 154, 27, 205, 128, 161, 89, 77, 36,
- 95, 110, 85, 48, 212, 140, 211, 249, 22, 79, 200, 50, 28, 188,
- 52, 140, 202, 120, 68, 145, 62, 70, 184, 190, 91, 197, 152, 224,
- 149, 104, 25, 178, 252, 182, 202, 182, 141, 197, 4, 81, 181, 242,
- 145, 42, 39, 227, 156, 198, 225, 193, 219, 93, 122, 175, 249, 0,
- 175, 143, 70, 239, 46, 246, 163, 53, 163, 109, 168, 135, 2, 235,
- 25, 92, 20, 145, 138, 77, 69, 166, 78, 176, 173, 212, 166, 113,
- 94, 161, 41, 50, 239, 49, 111, 164, 70, 60, 2, 37, 171, 75,
- 136, 156, 11, 56, 42, 146, 138, 229, 73, 146, 77, 61, 98, 196,
- 135, 106, 63, 197, 195, 86, 96, 203, 113, 101, 170, 247, 181, 113,
- 80, 250, 108, 7, 255, 237, 129, 226, 79, 107, 112, 166, 103, 241,
- 24, 223, 239, 120, 198, 58, 60, 82, 128, 3, 184, 66, 143, 224,
- 145, 224, 81, 206, 163, 45, 63, 90, 168, 114, 59, 33, 159, 95,
- 28, 139, 123, 98, 125, 196, 15, 70, 194, 253, 54, 14, 109, 226,
- 71, 17, 161, 93, 186, 87, 244, 138, 20, 52, 123, 251, 26, 36,
- 17, 46, 52, 231, 232, 76, 31, 221, 84, 37, 216, 165, 212, 106,
- 197, 242, 98, 43, 39, 175, 254, 145, 190, 84, 118, 222, 187, 136,
- 120, 163, 236, 249
- };
- W32 rndindex = 0;
- /*
- -----------------------------------------------------------------------------
- Function:
-
- Parameters:
-
- Returns:
-
- Notes:
- -----------------------------------------------------------------------------
- */
- PUBLIC void US_InitRndT( int randomize )
- {
- if( randomize )
- {
- rndindex = time( NULL ) & 0xFF;
- }
- else
- {
- rndindex = 0;
- }
- }
- /*
- -----------------------------------------------------------------------------
- Function:
-
- Parameters:
-
- Returns:
-
- Notes:
- -----------------------------------------------------------------------------
- */
- PUBLIC int US_RndT( void )
- {
- rndindex++;
- rndindex &= 0xFF;
-
- return rndtable[ rndindex ];
- }
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