// My moving Squares
// Marcella Todaro
// http://www.openprocessing.org/sketch/49183

SquaresArray [] button = new SquaresArray [300];

void setup () {
  size (500, 500);
  smooth ();


  //Array of Squares

  for (int i=0; i<button.length; i++) {

    button[i] = new SquaresArray (200, 200, 20);
  }
}


void draw () {

  background (169, 43, 288);  // Purple color

  for (int i=0; i<button.length; i++) {


    button[i].checkCollisions ();
    button[i].drawSquaresArray ();
    button[i].update ();
  }
}

void mousePressed () {

  for (int i=0; i<button.length; i++) {

    button[i].checkMousePress ();
  }
}


class SquaresArray {

  float x;
  float y;
  float xspeed;
  float yspeed;
  float squareSize;
  boolean clicked;


  SquaresArray (float xpos, float ypos, float sSize) {

    x = xpos;
    y = ypos;
    squareSize = sSize;

    xspeed = random (-10);
    yspeed = random (-10);

    clicked = false;
  }

  void update () {

    x += xspeed;
    y += yspeed;
  }

  void checkCollisions () {

    if ( (x<0) || (x>width-squareSize)) {
      xspeed = -xspeed;
    }

    if ( (y<0)  || (y>height-squareSize)) {
      yspeed = -yspeed;
    }
  }

  void drawSquaresArray () {

    if (clicked) {

      fill (133, 133, 221); //Fill square light blue
      
    }

    else {

      fill (255, 255, 0); // Fill square yellow
      
    }

    rect (x, y, squareSize, squareSize);
  }

  void checkMousePress () {

    if ((mouseX > x) && (mouseX< x + squareSize) && (mouseY > y) && (mouseY< y + squareSize)) {

      clicked = !clicked;
    }
  }
}