main.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdio_ext.h>

#define SIZE_X 20  
#define SIZE_Y 20

int cells[SIZE_X][SIZE_Y];

void loadPattern()
{
    FILE * file = fopen("pattern.txt","r");
    for (int i = 0; i< SIZE_X; i++)
        for (int j = 0; j< SIZE_Y; j++)
            fscanf(file, "%d", &cells[i][j]);
    fclose(file);
}

int countAlive(int x, int y)
{
    int i = 0;
    if (cells[(x + SIZE_Y - 1) % SIZE_Y][ y]) { i++;}
    if (cells[(x + SIZE_Y - 1) % SIZE_Y][ (y + SIZE_X - 1) % SIZE_X]) {i++;}
    if (cells[(x + SIZE_Y - 1) % SIZE_Y][ (y + 1) % SIZE_X]) {i++;}
    if (cells[x][ (y + SIZE_X - 1) % SIZE_X]) { i++;}
    if (cells[x][ (y + 1) % SIZE_X])   {i++;}
    if (cells[(x + 1) % SIZE_Y][ (y + SIZE_X - 1) % SIZE_X]) { i++;}
    if (cells[(x + 1) % SIZE_Y][y]) {i++;}
    if (cells[(x + 1) % SIZE_Y][ (y + 1) % SIZE_X]) {i++;}
    return i;
}

void generate()
{
    int c;
    int tmp[SIZE_Y][ SIZE_X];
    for (int i = 0; i < SIZE_Y; ++i)
        for (int j = 0; j < SIZE_X; ++j)
            {tmp[i][j] = cells[i][j];}
    for (int i = 0; i < SIZE_Y; ++i)
        for (int j = 0; j < SIZE_X; ++j) {
            c = countAlive(i, j);
            if (cells[i][j])
                if (c < 2 || c > 3) {tmp[i][j] = 0;}
            if (cells[i][j] == 0)
                if (c == 3) {tmp[i][j] = 1;}
        }
    for (int i = 0; i < SIZE_Y; ++i)
        for (int j = 0; j < SIZE_X; ++j)
            cells[i][j] = tmp[i][j];
}

void redraw()
{
    for (int i = 0; i< SIZE_X; i++){
        for(int j = 0; j < SIZE_Y; j++){
            if (cells[i][j])
                {printf("%2c", '*');}
            else
                {printf("%2c", ' ');}
        }
        puts("");
    }
}

void clrscr(void)
{
    printf("\033[2J");          /* Clear the entire screen. */
    printf("\033[0;0f");        /* Move cursor to the top left hand corner */
} 

int main(int argc, char * argv[])
{
    puts("Type amount of cycles");
    loadPattern();
    int n ;
    scanf("%d",&n); __fpurge(stdin);
    for (int i = 0; i< n; i++){
        system("sleep 0.1");
        clrscr();
        printf("Life game - %d cycle\n", i);
        redraw();
        generate();
    }
    return EXIT_SUCCESS;
}