wolf3d-browser/js/random.js
Brian Harris e0b653888d Wolfenstein 3D browser version
This is the code for the browser version of Wolfenstein 3D which is
playable on http://www.wolfenstein.com/game_NA.php
2013-05-16 11:34:31 -05:00

74 lines
No EOL
2.9 KiB
JavaScript

/*
* ===========================================================================
*
* Wolf3D Browser Version GPL Source Code
* Copyright (C) 2012 id Software LLC, a ZeniMax Media company.
*
* This file is part of the Wolf3D Browser Version GPL Source Code ("Wolf3D Browser Source Code").
*
* Wolf3D Browser Source Code 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.
*
* Wolf3D Browser Source Code 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 version 2
* along with Wolf3D Browser Source Code. If not, see <http://www.gnu.org/licenses/>.
*
* If you have questions concerning this license, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
*
* ===========================================================================
*/
Wolf.Random = (function() {
/* This is just John Carmack's table driven pseudo-random number generator */
var 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
];
var rndindex = 0;
function init(randomize) {
if (randomize ) {
rndindex = (new Date).getTime() & 0xFF;
} else {
rndindex = 0;
}
}
function rnd() {
rndindex++;
rndindex &= 0xFF;
return rndtable[rndindex];
}
return {
init : init,
rnd : rnd
}
})();