public class GameMap {



    /* Item's ID */

    private final int snakeID = 0,

    mapID = 1,

    borderID = 2,

    appleID = 3;



    /* Game Map */

    private int[][] GameMap;



    /* Snake Object */

    public Snake object;



    /* Apple Pos */

    private int[] applePosition = new int[2];



    public GameMap() {

    }



    /* Map Dimension: 7x7 */

    public void createMap(){

        int[][] map = {

                {2, 2, 2, 2, 2, 2, 2},

                    {2, 1, 1, 1, 1, 1, 2},

                    {2, 1, 1, 1, 1, 1, 2},

                    {2, 1, 1, 1, 1, 1, 2},

                    {2, 1, 1, 1, 1, 1, 2},

                    {2, 1, 1, 1, 1, 1, 2},

                    {2, 2, 2, 2, 2, 2, 2}

                            };



        this.GameMap = map;

    }



    public boolean setMap(int[] pos, int[] newPos){

        // Remove a old snake pos.

        this.GameMap[pos[0]][pos[1]] = this.mapID;



        // Set a new snake position.

        if (this.GameMap[newPos[0]][newPos[1]] == this.borderID){ // if occur colision then..

            return true;

        } else if (this.GameMap[newPos[0]][newPos[1]] == this.appleID) { // if eat apple then..

            object.setSize();

            createApple();

            this.GameMap[newPos[0]][newPos[1]] = this.snakeID; // new pos.

        } else {

            this.GameMap[newPos[0]][newPos[1]] = this.snakeID; // new pos.

        }

        return false;

    }



    /* Create Snake on the map */

    public void createSnake(){



        int row = (int) Math.random() * this.GameMap.length,

        column = (int) Math.random() * this.GameMap.length;



        if(this.GameMap[row][column] == 1){

            this.GameMap[row][column] = this.snakeID;



            object = new Snake(row, column);

        } else {

            createSnake();

        }

    }



    /* Create Apple on the map */

    public void createApple(){

        int row = (int) Math.random() * this.GameMap.length;

        int column = (int) Math.random() * this.GameMap.length;



        if(this.GameMap[row][column] != 2 && this.GameMap[row][column] != 0){

            this.GameMap[row][column] = this.appleID;



            this.applePosition[0] = row;

            this.applePosition[1] = column;

        } else {

            createApple();

        }

    }



    public int[] getApplePosition(){

        return this.applePosition;

    }



    public int getMapID(int row, int column){

        return this.GameMap[row][column];

    }



}


public class Snake {

    private boolean Live;

    private int size; // implements after.

    private int[] position = new int[2];

    public GameMap pos;



    public Snake(int row, int column){

        this.Live = true;

        this.size = 1;



        this.position[0] = row;

        this.position[1] = column;

    }



    public int[] getPosition() {

        return this.position;

    }



    public void setPosition(int[] newPos){

        pos = new GameMap();

        boolean check = pos.setMap(this.position, newPos);



        if(check == true){

            this.Live = false;

        } else {

            this.position = newPos;



        }

    }

    public void setSize(){
        this.size += 1;
    }



    public boolean isLive() {

        return this.Live;

    }

}