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/***            ΦΩΤΑΚΙΑ                                      ***/
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class fotaki
{
  int r, g, b;
  boolean on;
  int x, y;
  
  
  fotaki(int pr, int pg, int pb, boolean pon, int px, int py)
  {
    r = pr;
    g = pg;
    b = pb;
    on = pon;
    x = px;
    y = py;
  }
  
  void display()
  {
    float alpha;
    
    if (on)
    {
      alpha = 1000.0;
    }
    else
    {
      alpha = 0.0;
    }
    fill(r, g, b, alpha);
    ellipse(x, y, 20, 20);
  }
  
  
  void change()
  {
    on = !on;
  }
  
}