1 /* ======================================================================= */
3 /* ======================================================================= */
5 class site: public location
7 char x, y, alive, next_alive;
8 int total_surrounding(void);
10 site(int xi, int yi): x(xi), y(yi), alive(0) { }
12 char read() { return alive; }
13 void set(void) { alive = 1; }
14 void clear(void) { alive = 0; }
15 void compute_next_state(void)
17 int n = total_surrounding();
19 if (n < 2 || n > 3) next_alive = 0;
20 else if (n > 2) next_alive = 1;
22 void step(void) { alive = next_alive; }