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/****************************************************************************\
* *
* Copyright by Casimo, 2013 *
* *
* This file is part of fxMaze. *
* *
* fxMaze 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 3 of the License, or *
* (at your option) any later version. *
* *
* fxMaze 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 *
* along with fxMaze. If not, see <http://www.gnu.org/licenses/>. *
* *
\****************************************************************************/
#include "global.h"
#include "calc.h"
#include "syscalls.h"
// table that holds precalculated values for the floor and ceiling
int TDist[64];
// random number generator; could be improved
static uint lastrandom = 0x123456;
void seedrandom(void)
{
lastrandom = RTC_GetTicks();
}
unsigned int random()
{
lastrandom = (0x41C64E6D*lastrandom) + 0x3039;
return (lastrandom >> 16);
}
// inits constants for floor etc
void table()
{
int x;
for(x = 0; x < 64; x++)
{
TDist[x] = (64 << 8) / (2.0 * x - 64);
}
}
// fills an array
void fill(uint *ptr, uint element, uint arraysize)
{
for(;arraysize > 0; arraysize--, ptr++)
*ptr = element;
}
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