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/*
* Random bubbles.
*
* start with a wall-filled field - then erase a circle,
* then fill a smaller one inside it - repeat
*
* Copyright (C) 2003, Chris Guirl
* Released under the GNU General Public License (v2)
*/
#include "map.h"
#include "misc.h"
void bubbles()
{
int r, c, b;
int size;
int centerx, centery;
int outradius, inradius, midradius;
int bubblesx, bubblesy; /* number of bubbles in a row or column */
int numbubbles;
clear_invert_map();
/*
* outer is the main bubble
* inner is the black dot in the bubble
* what's the middle??
*/
size = (map.sec_width > map.sec_height ? map.sec_width : map.sec_height);
outradius = rand_num(size/3, size);
inradius = rand_num(outradius/1.5, outradius*(7.0/8.0));
midradius = (outradius + inradius) / 2;
midradius = (midradius == 0 ? 1 : midradius);
bubblesx = map.sec_width / midradius;
bubblesy = map.sec_height / midradius;
numbubbles = (bubblesx * bubblesy);
numbubbles = (numbubbles == 0 ? 1 : numbubbles);
for( r = 0; r < map.num_row; r++ )
{
for( c = 0; c < map.num_col; c++ )
{
for( b = 0; b < numbubbles; b++ )
{
rand_point_section_offset(¢erx, ¢ery, r, c, 0);
/*
*centerx *= (centerx / bubblesx);
*centery *= (centery / bubblesy);
*/
circlefill(map.map, centerx, centery, outradius, 255);
circlefill(map.map, centerx, centery, inradius, 0);
}
} /* for(c..) */
} /* for(r..) */
return;
}
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