int x = 100;
int y = 400;
int w = 60;
int h = 60;
int eyeSize = 16;
int speed = 3;

void setup(){
  size(1000,800);
  smooth();
}

void draw(){
  x = x+speed;
  
  if ((x>width)||(x<0)){
    speed = speed *-1;
  }
  
  background(255);
  ellipseMode(CENTER);
  rectMode(CENTER);
  
  for (int i = y+5; i < y+h; i += 10){
    stroke(0);
    line(x-w/3,i,x+w/3,i);
  }

//Zoog's body
  stroke(0);
  fill(175);
  rect(x,y,w/6,h*2);

//Zoog's head  
  fill(255);
  ellipse(x,y-h/2,w,h);
  
//Zoog's eyes  
  fill(0);
  ellipse(x-w/3,y-h/2,eyeSize,eyeSize*2);
  ellipse(x+w/3,y-h/2,eyeSize,eyeSize*2);
  
//Zoog's legs
  stroke(0);
  line(x-w/12,y+h,x-w/4,y+h+10);
  line(x+w/12,y+h,x+w/4,y+h+10);
}