let rez = 10;

let w;

let h;

let food;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  frameRate(10);

  w = floor(width / rez);

  h = floor(height / rez);

  snake = new Snake();

  foodLocation();

}

​

function foodLocation() {

  let x = floor(random(w));

  let y = floor(random(h));

  food = createVector(x, y);  

}

​

function keyPressed() {

  if (keyCode == UP_ARROW) {

    snake.direction(0, -1);

  } else if (keyCode == DOWN_ARROW) {

    snake.direction(0, 1);

  } else if (keyCode == RIGHT_ARROW) {

    snake.direction(1, 0);

  } else if (keyCode == LEFT_ARROW) {

    snake.direction(-1, 0);

  }

}

​

function draw() {

  scale(rez);

  background(0);

  snake.update();

  snake.show();

  fill(255, 0, 0);

  noStroke();

  rect(food.x, food.y, 1, 1);

}