L.2 Turtle

void setup() {
  size(400, 300);
  background(60, 237, 221);

  frameRate(20);
}

int walk_right = 70;
int walk_front = -100;

void draw()  
{
  background(60, 237, 221);
  draw_turtle(walk_right,walk_front );
  draw_turtle(-walk_right,walk_front );
  draw_turtle(0,walk_front );
   walk_right = walk_right + 1;
   if (walk_right > 200) {walk_right = 70;}
   walk_front = walk_front + 3;
   if (walk_front > 290) {walk_front = -100;}
  
  
 
}
void draw_turtle(int walk_right, int walk_front)
{
  fill(173, 255, 47);
  ellipse(165+walk_right, 220-walk_front, 30, 15);
  ellipse(165+walk_right, 260-walk_front, 30, 15);
  ellipse(235+walk_right, 220-walk_front, 30, 15);
  ellipse(235+walk_right, 260-walk_front, 30, 15);
  ellipse(200+walk_right, 285-walk_front, 10, 20);
  ellipse(200+walk_right, 185-walk_front, 40, 40);
  fill(85, 107, 47);
  ellipse(200+walk_right, 240-walk_front, 70, 90);
  line(200+walk_right, 205-walk_front, 200+walk_right, 275-walk_front);
  quad(180+walk_right, 210-walk_front, 196+walk_right, 205-walk_front, 196+walk_right, 220-walk_front, 185+walk_right, 220-walk_front);
  quad(180+walk_right, 230-walk_front, 196+walk_right, 235-walk_front, 196+walk_right, 220-walk_front, 185+walk_right, 220-walk_front);
  quad(180+walk_right, 240-walk_front, 196+walk_right, 235-walk_front, 196+walk_right, 250-walk_front, 185+walk_right, 250-walk_front);
  quad(180+walk_right, 260-walk_front, 196+walk_right, 265-walk_front, 196+walk_right, 250-walk_front, 185+walk_right, 250-walk_front);
  quad(180+walk_right, 275-walk_front, 196+walk_right, 280-walk_front, 196+walk_right, 265-walk_front, 185+walk_right, 265-walk_front);
  quad(220+walk_right, 210-walk_front, 204+walk_right, 205-walk_front, 204+walk_right, 220-walk_front, 215+walk_right, 220-walk_front);
  quad(220+walk_right, 230-walk_front, 204+walk_right, 235-walk_front, 204+walk_right, 220-walk_front, 215+walk_right, 220-walk_front);
  quad(220+walk_right, 240-walk_front, 204+walk_right, 235-walk_front, 204+walk_right, 250-walk_front, 215+walk_right, 250-walk_front);
  quad(220+walk_right, 260-walk_front, 204+walk_right, 265-walk_front, 204+walk_right, 250-walk_front, 215+walk_right, 250-walk_front);
  quad(220+walk_right, 275-walk_front, 204+walk_right, 280-walk_front, 204+walk_right, 265-walk_front, 215+walk_right, 265-walk_front);
  ellipse(185+walk_right, 179-walk_front, 10, 10);
  ellipse(215+walk_right, 179-walk_front, 10, 10);
}