#ifndef GOL_ARRAY_H
#define GOL_ARRAY_H

#include <stdint.h>


/* 
 * Represents a state of the Game of Life.  The coordinates of all live cells
 * is stored in an array: [x1, y1, x2, y2, x3, y3,...].  N is the number of
 * live cells, size is the size of the array. 
 */

struct gol_board {
	int_least32_t *live_cells;
	uint_least32_t n;
	uint_least32_t size;
	int_least32_t max_x;
	int_least32_t min_x;
	int_least32_t max_y;
	int_least32_t min_y;
};

/*
 * Check that a cell located at (x,y) in the game board is live.
 */
int gol_is_live(struct gol_board *state, int_least32_t x, int_least32_t y, char *is_live);

/*
 * Append the coordinates of the live cell to the array.
 */
int gol_vivify(struct gol_board *state, int_least32_t x, int_least32_t y);

#endif