package ConwaysLife;

public class main {

    public static void main(String[] args) {
        int n = 17, i, j;
        cell arr1[][] = new cell[n][n];
        cell arr2[][] = new cell[n][n];

        for (i = 0; i < arr1.length; i++)
            for (j = 0; j < arr1[0].length; j++) {
                arr1[i][j] = new white(i, j);
            }

        for (i = 0; i < arr2.length; i++)
            for (j = 0; j < arr2[0].length; j++) {
                arr2[i][j] = new white(i, j);
            }

        arr1[3][8] = new black(3, 8);
        arr1[4][7] = new black(4, 7);
        arr1[5][7] = new black(5, 7);
        arr1[5][8] = new black(5, 8);
        arr1[5][9] = new black(5, 9);
        arr1[10][7] = new black(10, 7);
        arr1[10][8] = new black(10, 8);
        arr1[10][9] = new black(10, 9);
        arr1[11][7] = new black(11, 7);
        arr1[12][8] = new black(12, 8);
        arr1[3][2] = new black(3, 2);
        arr1[4][3] = new black(4, 3);
        arr1[5][1] = new black(5, 1);
        arr1[5][2] = new black(5, 2);
        arr1[5][3] = new black(5, 3);
        arr1[9][1] = new black(9, 1);
        arr1[9][2] = new black(9, 2);
        arr1[9][3] = new black(9, 3);
        arr1[10][3] = new black(10, 3);
        arr1[11][2] = new black(11, 2);
        print(arr1);

        System.out.println();
        for (int k = 1; k < 5; k++) {
            if (k % 2 != 0) {
                WhatNext(arr1, arr2);
                print(arr2);
            } else {
                WhatNext(arr2, arr1);
                print(arr1);
            }
        }
    }


    public static void WhatNext(cell[][] arr1, cell[][] s) {
        int n = 17, i, j;
        for (i = 1; i < n - 1; i++) {
            for (j = 1; j < n - 1; j++) {
                s[i][j] = arr1[i][j].NextColor(arr1);
            }
        }
    }

    static void print(cell[][] b) {
        for (int i=1; i<16; i++) {
            for (int j=1; j<16; j++)
                if(b[i][j].who() == 1)
                    System.out.print("X" + " ");
                else
                    System.out.print("-" + " ");
            System.out.println();
        }
        System.out.println();
    }

}

/////

package ConwaysLife;

public abstract class cell {
    public int x, y;

    public cell(int x, int y) {
        this.x = x;
        this.y = y;
    }
    abstract int who();
    abstract cell NextColor(cell[][] a);

    public int neighbours(cell[][] a) {
        int i, j, count;
        count = 0;
        for (i = -1; i < 2; i++) {
            for (j = -1; j < 2; j++) {
                count += a[x + i][y + j].who();
            }
        }
        count -= a[x][y].who();
        return count;
    }

}

/////

package ConwaysLife;

public class white extends cell {
    public white(int x, int y) {
        super(x,y);
    }
    public int who() {
    return 0;
    }
    cell NextColor(cell[][] arr1)
    {
        int count = neighbours(arr1);
        if (count==3)
            return new black(x,y);
        return this;
    }
}

/////

package ConwaysLife;

public class black extends cell {

    public black(int x, int y) {
        super(x, y);
    }
    public int who() {
    return 1;
    }
    cell NextColor(cell[][] arr1)
    {
        int count = neighbours(arr1);
        if (count == 2 || count == 3)
            return this;
        return new white(x, y);
    }
}