text: reward = 0;
  
  x = 200;
  y = 600;
  r = 40;
  
  gold_r = 10;
  
  wall = [
  [0, 0, 50, 800, 0], 
  [0, 0, 350, 50, 0],
  [450, 0, 350, 50, 0],
  [0, 800 - 50, 800, 50, 0], /* I know it's 750, doing this for clarity */
  [800 - 50, 0, 50, 800, 0]
  ];
  