//
// Copyright(C) 1993-1996 Id Software, Inc.
// 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.
//
// DESCRIPTION:
//	Random number LUT.
//

//
// M_Random
// Returns a 0-255 number
//

static const unsigned char rndtable[256] = {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};

int rndindex = 0;
int prndindex = 0;

// Which one is deterministic?
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;
}
