В чем ошибка? Почему валидатор не пропускает?
package com.javarush.games.snake;
import com.javarush.engine.cell.*;
public class SnakeGame extends Game {
public static final int WIDTH = 15;
public static final int HEIGHT = 15;
private int turnDelay;
private Snake snake;
public void initialize(){
setScreenSize(WIDTH, HEIGHT);
createGame();
}
private void createGame(){
snake = new Snake(WIDTH / 2, HEIGHT / 2);
drawScene();
turnDelay = 300;
setTurnTimer(turnDelay);
}
private void drawScene(){
for (int x = 0; x < WIDTH; x++){
for(int y = 0; y < HEIGHT; y++){
setCellValueEx(x, y, Color.GREEN, "");
}
}
snake.draw(this);
}
@Override
public void onTurn(int step){
snake.move();
drawScene();
}
}