code: def draw_arc(self, color, world_loc, world_radius, start_angle, stop_angle,
                 thickness=1):
      
      center = self.world_to_surf.fwd_pt(world_loc).round()
      radius = max(1, int(self.world_to_surf.fwd_dist(world_radius)))
      rect = pygame.Rect(center - radius, (radius * 2, radius * 2))
      pygame.draw.arc(self.surf, color, rect, start_angle, stop_angle,
                      thickness if thickness < radius else 0)
docs: Draw an arc using world coordinates, radius, start and stop angles.