Robottini

Robot.pde

class Robot {
  float x;
  float y;
  float torsoW = random(50, 100);
  float torsoH = torsoW + 10;
  color torsoColor = color(random(360), 100, 100);
  float eyesRadius = 10;
  color eyesColor = color(random(360), 100, 100);

  Robot(float posX, float posY) {
    x = posX;
    y = posY;
  }

  void display() {
    pushMatrix();
    translate(x, y);
    fill(hue(torsoColor), 80, 80);
    ellipse(0, -torsoH, torsoW * 0.8, torsoW * 0.7);
    fill(eyesColor);
    ellipse(-(eyesRadius + 2), -torsoH -5, eyesRadius, eyesRadius);
    ellipse((eyesRadius + 2), -torsoH -5, eyesRadius, eyesRadius); 
    fill(torsoColor);
    rect(0, -torsoH / 2, torsoW, torsoH);   
    popMatrix();
  }
}

Robottini.pde

Robot[] r;
Robot[] rTemp;
int numberOfRobots = 3;

boolean reloadArray = false;
void setup() {
  //size(800, 600);
  rectMode(CENTER);
  noStroke();
  colorMode(HSB, 360, 100, 100);

  r = new Robot[numberOfRobots];
  for (int i = 0; i < r.length; i++) {
    r[i] = new Robot(random(width), random(height));
  }
}

void draw() {
  background(#ffffff);
  if (reloadArray == true) {
    r = rTemp;
    reloadArray = false;
  }
  for (int i = 0; i < r.length; i++) {
    r[i].display();
  }
}

void mouseReleased() {
  rTemp = new Robot[r.length + 1];
  for (int i = 0; i < r.length; i++) {
    rTemp[i] = r[i];
  }
  rTemp[rTemp.length - 1] = new Robot(mouseX, mouseY);

  reloadArray = true;
}