ref: a7460558a76596504f617ee8e1267006a7369338
dir: /src/hexen/m_random.c/
// // Copyright(C) 1993-1996 Id Software, Inc. // Copyright(C) 1993-2008 Raven Software // Copyright(C) 2005-2014 Simon Howard // // 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. // // HEADER FILES ------------------------------------------------------------ #include "m_random.h" // This is the new flat distribution table static const unsigned char rndtable[256] = { 201, 1, 243, 19, 18, 42, 183, 203, 101, 123, 154, 137, 34, 118, 10, 216, 135, 246, 0, 107, 133, 229, 35, 113, 177, 211, 110, 17, 139, 84, 251, 235, 182, 166, 161, 230, 143, 91, 24, 81, 22, 94, 7, 51, 232, 104, 122, 248, 175, 138, 127, 171, 222, 213, 44, 16, 9, 33, 88, 102, 170, 150, 136, 114, 62, 3, 142, 237, 6, 252, 249, 56, 74, 30, 13, 21, 180, 199, 32, 132, 187, 234, 78, 210, 46, 131, 197, 8, 206, 244, 73, 4, 236, 178, 195, 70, 121, 97, 167, 217, 103, 40, 247, 186, 105, 39, 95, 163, 99, 149, 253, 29, 119, 83, 254, 26, 202, 65, 130, 155, 60, 64, 184, 106, 221, 93, 164, 196, 112, 108, 179, 141, 54, 109, 11, 126, 75, 165, 191, 227, 87, 225, 156, 15, 98, 162, 116, 79, 169, 140, 190, 205, 168, 194, 41, 250, 27, 20, 14, 241, 50, 214, 72, 192, 220, 233, 67, 148, 96, 185, 176, 181, 215, 207, 172, 85, 89, 90, 209, 128, 124, 2, 55, 173, 66, 152, 47, 129, 59, 43, 159, 240, 239, 12, 189, 212, 144, 28, 200, 77, 219, 198, 134, 228, 45, 92, 125, 151, 5, 53, 255, 52, 68, 245, 160, 158, 61, 86, 58, 82, 117, 37, 242, 145, 69, 188, 115, 76, 63, 100, 49, 111, 153, 80, 38, 57, 174, 224, 71, 231, 23, 25, 48, 218, 120, 147, 208, 36, 226, 223, 193, 238, 157, 204, 146, 31 }; int rndindex = 0; int prndindex = 0; /* =============== = = M_Random = = Returns a 0-255 number = =============== */ int P_Random(void) { prndindex = (prndindex + 1) & 0xff; return rndtable[prndindex]; } int M_Random(void) { rndindex = (rndindex + 1) & 0xff; return rndtable[rndindex]; } void M_ClearRandom(void) { rndindex = prndindex = 0; } // inspired by the same routine in Eternity, thanks haleyjd int P_SubRandom (void) { int r = P_Random(); return r - P_Random(); }