52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*******************************************************************************
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MenuetOS MineSweeper
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Copyright (C) 2003 Ivan Poddubny
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*******************************************************************************/
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dword generator; // random number generator - äëÿ ãåíåðàöèè ñëó÷àéíûõ ÷èñåë
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:int random(int max)
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// get pseudo-random number - ïîëó÷èòü ïñåâäîñëó÷àéíîå ÷èñëî
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{
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$rdtsc // eax & edx
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$xor eax,edx
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$not eax
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EBX = generator;
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$ror ebx,3
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$xor ebx,0xdeadbeef
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EBX += EAX;
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generator = EBX;
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EAX += EBX;
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EAX = EAX % max;
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return EAX;
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}
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:randomize()
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// initialize random number generator - èíèöèàëèçèðîâàòü ãåíåðàòîð ñëó÷àéíûõ ÷èñåë
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{
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asm
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{
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mov eax,3
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int 0x40
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ror eax,16
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}
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generator = EAX;
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} |