Robot face1;
Robot face2;
Robot face3;
 
  
void setup() {
 size(640, 480);
  smooth();
  rectMode(CENTER);
  face1 = new Robot(random(width), random(height), random(0.1, 1), random(10, 255));
  face2 = new Robot(random(width), random(height), random(0.1, 1), random(10, 255));
  face3 = new Robot(random(width), random(height), random(0.1, 1), random(10, 255));
 
}
  
void draw() {
  background(255);
  face1.moveArm();
  face1.moveEye();
  face1.move();
  face1.display();
  face2.moveArm();
  face2.moveEye();
  face2.move();
  face2.display();
  face3.moveArm();
  face3.moveEye();
  face3.move();
  face3.display();
}

class Robot {
  float x;
  float y;
  float scalar;
  float armLength = 291;
  float armMovement = random(1, 60);
  float eyeSize = 10;
  float eyeMovement = random(1, 20);
  float speed = random(1, 4);
  float fillColor;
    
  Robot(float x_in, float y_in, float scalar_in, float fillColor_in) {
    x = x_in;
    y = y_in;
    scalar = scalar_in;
    fillColor = fillColor_in;
  }
    
  void move() {
    x += random(-speed, speed);
    x = constrain(x, 0, width);
    y += random(-speed, speed);
    y = constrain(y, 0, height);
  }
    
  void display() {
    pushMatrix();
      translate(x, y);
      scale(scalar);
      stroke(fillColor);
      strokeWeight(25);
      line(192, 231, 192, armLength); //arms
      line(41, 231, 41, armLength);
      line(139, 312, 139, 351); //legs
      line(95, 312, 95, 351);
      strokeWeight(3);
      line(141, 171, 152, 151); //antennas
      line(93, 171, 82, 151);
      noStroke();
      fill(fillColor);
      arc(117, 219, 115, 115, PI, PI * 2); //body
      rect(117, 275, 115, 100);
      fill(255);
      ellipse(143, 189, eyeSize, eyeSize);
      ellipse(91, 189, eyeSize, eyeSize);
   popMatrix();
  }
    
  void moveArm() {
   armLength += armMovement;
   if(armLength < 200 || armLength > 300) {
     armMovement = - armMovement;
   }
  }
  void moveEye() {
   eyeSize += eyeMovement;
   if(eyeSize < 5 || eyeSize > 20) {
     eyeMovement = - eyeMovement;
   }
  }
}