Need help coding with coding SNAKE

Processing Coding Questions
1

Hello, I really need help. I have to code snake but I have no clue anymore what to do. I currently have the snake coded and an apple which spawns at the start randomly.

I need help in the following:

  • Snake should be able to eat the apple and when eating, the size should increase +1 and a new apple should spawn
  • A score display, how many apples the snake ate
  • When touching the edge, the game should stop

Optional:

  • If you are moving to the right, you cant move to the left. The same on the opposite way

I’m trying to code it for about 5 hours now but I’m just not friendly with that PVector (but I have to)

My code:

ArrayList<PVector> snake = new ArrayList<PVector>();


int speed = 50;
PImage background;
float appleX = random(780), appleY = random(780);


void setup() {
  PVector head = new PVector(150, 350);
  snake.add(head);

  for (int i = 0; i < 3; i++) {
    snake.add(new PVector(100 + i * 50, 350));
  }
  background = loadImage("Background.png");
  image(background, 0, 0);
  size(800, 800);
  frameRate(6);
}


void draw() {
  background(background);
  drawApple();
  fill(#426fe3);
  move();

  for (int i = 0; i < snake.size(); i++) {
    PVector element = snake.get(i);
    rect(element.x, element.y, 50, 50, 12);
  }
}


void move() {
  int xMove = 0, yMove = 0;

  switch (keyCode) {
  case UP:
    yMove = -speed; 
    break;

  case DOWN: 
    yMove = speed; 
    break;

  case LEFT: 
    xMove = -speed; 
    break;

  case RIGHT: 
    xMove = speed;
    break;
  }
  if (xMove == 0 && yMove == 0) {
    return;
  }
  PVector newHead = new PVector(snake.get(0).x + xMove, snake.get(0).y + yMove);
  snake.add(0, newHead); 
  snake.remove(snake.size()-1);
}


void drawApple() {
  fill(#ff0000);
  rect(appleX, appleY, 40, 40, 24);
}
2

5 hours is not much

Look at dist() command to get the dist between snake head and apple