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/* ======================================================================= */
/* CONWAY.CPP */
/* ======================================================================= */
#include "assert.h"
#include "iostream.h"
#include "conio.h"
#include "clheir.h"
#include "screen.h"
#include "conway.h"
#define max(x,y) ((x > y) ? x : y)
#define min(x,y) ((x > y) ? y : x)
const int num_rows = min(50, NUM_ROWS);
const int num_columns = 40;
class site *field_of_play[num_rows][num_columns];
int site::total_surrounding(void)
{
int i, j, imin, imax, jmin, jmax, total;
total = 0;
imin = max(0, x - 1);
imax = min(num_rows - 1, x + 1);
jmin = max(0, y - 1);
jmax = min(num_columns - 1, y + 1);
for (i = imin; i <= imax; i++)
for (j = jmin; j <= jmax; j++)
if (field_of_play[i][j]->read()) total++;
if (alive) total--;
return total;
}
void display(void)
{
int i, j;
for (i = 0; i < num_rows; i++)
for (j = 0; j < num_columns; j++)
{
if (field_of_play[i][j]->read()) write_xyc(2*j, i, 'X');
else write_xyc(2*j, i, '.');
}
hide_cursor();
}
void glider(int x, int y)
{
field_of_play[x - 1][y + 0]->set();
field_of_play[x - 1][y + 1]->set();
field_of_play[x + 0][y - 1]->set();
field_of_play[x + 0][y + 0]->set();
field_of_play[x + 1][y + 1]->set();
}
void traffic_light(int x, int y)
{
field_of_play[x - 1][y]->set();
field_of_play[x + 0][y]->set();
field_of_play[x + 1][y]->set();
}
void main(void)
{
int i, j, c;
init_registry();
for (i = 0; i < num_rows; i++)
for (j = 0; j < num_columns; j++)
field_of_play[i][j] = new site(i, j);
start_over:
traffic_light(num_rows/2 - 8, num_columns/2 - 8);
glider(num_rows/2 + 8, num_columns/2 + 8);
clear_screen();
while (1)
{
display();
if ((c = getch()) == 'q') { clear_screen(); return; }
if (c == 'i')
{
for (i = 0; i < num_rows; i++)
for (j = 0; j < num_columns; j++)
field_of_play[i][j]->clear();
goto start_over;
}
step_everybody();
}
}
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