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2739 | leency | 1 | /******************************************************************************* |
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3 | MenuetOS MineSweeper |
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4 | Copyright (C) 2003 Ivan Poddubny |
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5 | |||
6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2 of the License, or |
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9 | (at your option) any later version. |
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10 | |||
11 | This program is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |||
16 | You should have received a copy of the GNU General Public License |
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17 | along with this program; if not, write to the Free Software |
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18 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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19 | |||
20 | *******************************************************************************/ |
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21 | |||
22 | dword generator; // random number generator - для генерации случайных чисел |
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23 | |||
24 | :int random(int max) |
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25 | // get pseudo-random number - получить псевдослучайное число |
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26 | { |
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27 | $rdtsc // eax & edx |
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28 | $xor eax,edx |
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29 | $not eax |
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30 | |||
31 | EBX = generator; |
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32 | $ror ebx,3 |
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33 | $xor ebx,0xdeadbeef |
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34 | EBX += EAX; |
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35 | generator = EBX; |
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36 | |||
37 | EAX += EBX; |
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38 | EAX = EAX % max; |
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39 | return EAX; |
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40 | } |
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41 | |||
42 | :randomize() |
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43 | // initialize random number generator - инициализировать генератор случайных чисел |
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44 | { |
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45 | asm |
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46 | { |
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47 | mov eax,3 |
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48 | int 0x40 |
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49 | ror eax,16 |
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50 | } |
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51 | generator = EAX; |
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52 | } |