// @uthor Utroz.

// Game Map
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];

    private boolean GameStatus;

    public GameMap() {

        GameStatus = true;

    }

    /* 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 void setMap(int[] newPos){

        // Catch a snake position.
        int[] pos = object.getPosition();

        // 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){

            object.setLive(false); // set dead.
            this.GameStatus = false; // finish game.

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

            object.setSize();
            createApple();

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

            object.setPosition(newPos);

        } else {

            this.GameMap[newPos[0]][newPos[1]] = this.snakeID; // new pos.
            object.setPosition(newPos);
        }
    }

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

    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){

        this.position[0] = newPos[0];
        this.position[1] = newPos[1];

    }

    public void setLive(boolean arg){
        this.Live = false;
    }

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

    }

    public boolean isLive() {
        return this.Live;

    }

}