// CSC220F19DemoE_ClassArrayTranslate Parson's csc120 recap

Avatar1 [] av1 = new Avatar1 [57];
// setup() called once at the start of Run
void setup() {
  size(800, 700);  // At a minimum set display window size in setup().
  frameRate(60);    // Must be explicit in newer Macs after setting size.
  rectMode(CENTER);
  ellipseMode(CENTER);
  for (int i = 0 ; i < av1.length ; i++) {
    av1[i] = new Avatar1(int(random(0,width)), int(random(0, height)));
  }
}

// draw() is called in a loop at the frameRate, defaults to once every 60th sec.
void draw() {
  background(255, 255, 0);  // screen color, use Tools -> Color Selector, RGB
  int i = 0 ;
  while (i < av1.length) {
    av1[i].display();  // function call to the display() function to display avatar
    av1[i].move();
    i++ ;
  }
}

class Avatar1 {
  int elx, ely ; // X, Y location
  int exspeed, eyspeed ; // X, Y speed
  int ewidth = 75, eheight = 50 ; // w & h of Avatar1
  // added in 020 section at 1:30
  float scaleFactor, scaleSpeed ; // scale "location" and speed
  Avatar1(int initialx, int initialy) {
    // constructor for a class builds an object of that class
    elx = initialx ;
    ely = initialy ;
    exspeed = round(random(1,4)) ;
    eyspeed = round(random(1,5)) ; ;
    scaleFactor = random(.1, 2.0);
    scaleSpeed = .01 ;
  }
  void display() {
    pushMatrix();
    translate(elx, ely);
    scale(scaleFactor); // added in 1:30 class
    // display my avatar
    // body
    stroke(0);
    fill(255);
    rect(0, 0, ewidth/2, eheight/2);
    //head 
    stroke(0, 0, 255); // Sets stroke around shapes, alternatively noStroke()
    fill(255, 128, 0); // Sets fill within closed shape, alternatively noFill()
    ellipse(0, -eheight/2, ewidth, eheight); // X, Y, Ewidth, Eheight
    popMatrix();
  }
  
  void move() {
    // move my avatar
    elx = elx + exspeed ;
    ely += eyspeed ;
    if (elx > width+ewidth) {
      // if horizontal loc is off right side of display
      exspeed = - exspeed ;  // reverse direction
    } else if (elx < 0-ewidth) {
      // if horizontal loc is off left side of display
      exspeed = - exspeed ;
    }
    if (ely < 0-eheight || ely > height+eheight) {
      // if vertical off top or bottom
      eyspeed = - eyspeed ;
    }
    scaleFactor += scaleSpeed ;
    if (scaleFactor < 0 || scaleFactor > 2) {
      scaleSpeed = - scaleSpeed ;
    }
  }
}