// class definition
class Firefly {
  float x, y;
  float w, h;
  float speed;
  float speedY;
  int life;
  float blinkRate;
  float alphaFill;
  float overlap;
  int cool;
  int warm;
  float speedTemp;
  float speedYTemp;
  
  // class declaration
  Firefly (float ix, float iy, float ialpha, float iblink) {
    x = ix;
    y = iy;
    w = 5;
    h = 5;
    speed = random(-.03, .03);
    speedY = random(-.03, .03);
    life = 1;
    blinkRate = iblink;
    alphaFill = ialpha;
    overlap = (width+height)/3;
    cool = 255;
    warm = 255;
  }
  
  // main function
  void update() {
    //print(" " + overlap);
    
    if (life == 1) {
      checkImpact();
      move();
      blink();
      warm = 255;
      cool = 255;
    }
    if (life == 0) {
      slow();
      warm = 0;
    }
    if (life == 2) {
      fast();
      cool = 0;
    }
  }
  
  void move() {
        // update position
    x = x + speed;
    y = y + speedY;

    
    // check boundaries
    if (x > (width - 3)){
      x = (width - 3);
      //speed = random(-.03, -.001);
      speed = (speed*-1 + random(-.03, -.001))/2;
      speedTemp = speed;
      //println (speed);
    }
    if (x < 3){
      x = 3;
      //speed = random(.001, .03);
      speed = (speed*-1+random(.001, .03))/2;
      speedTemp = speed;
      //println (speed);
    }
    if (y > (height-3)){
      y = (height-3);
      //speedY = random(-.03, -.001);
      speedY = (speedY*-1 + random(-.03, -.001))/2;
      speedYTemp = speedY;
      //println (speedY);
    }
    if (y < 3){
      y = 3;
      //speedY = random(.001, .03);
      speedY = (speedY*-1+random(.001, .03))/2;
      speedYTemp = speedY;
      //println (speedY);
    
    }

        // move around mouse position
    if ((abs(mouseX - x) < 100) && (abs(mouseY - y) < 100) && (abs(mouseX - x) > 2) && (abs(mouseY - y) > 2)){
        //X direction
        speedTemp = speed;
        speed = random(0, .03) - 3/(mouseX - x)*(10/abs(mouseY - y));
        //if (x < 2) { x = abs(x); }
        //if (x > width - 2) { x = 2*width - x; }
        //Y direction      
        speedYTemp = speedY;
        speedY = random(0, .03) - 3/(mouseY - y)*(10/abs(mouseX - x));
        //if (y < 2) { y = abs(y); }
        //if (y > height - 2) { y = 2*height - y; }    
    }else{
      speed = speedTemp;
      speedY = speedYTemp;
    }
    
  }
  
//*
  void checkImpact() {
    // if firefly overlaps with neighbors set to new life stage
    for (int i=0;i<fireflies.length;i++) {
      if ((abs(fireflies[i].x - x) < overlap) && (abs(fireflies[i].y - y) < overlap)) {
        if (fireflies[i].alphaFill < alphaFill) {
          life = 2;
        }
        if (fireflies[i].alphaFill > alphaFill) {
          life = 0;
        }
      }
      //check for mouse presence
      if ((abs(mouseX - x) < 50) && (abs(mouseY - y) < 50)) {
        alphaFill = 10;
        blinkRate = 1.0001;
    }
  }
  }
//*/ 
 
  void blink() {
    // slowly fade
    if (alphaFill > 0) {
      alphaFill = alphaFill / (blinkRate);// + random(-.0001,.0001));
    }
    // blink on
    if (alphaFill < 1) {
      alphaFill = 195;
    }
    // draw with new alpha
    fill(cool,255,warm,alphaFill+60);
    ellipse(x,y,w,h);
  }
  
  
  void slow() {
    if (blinkRate > 1.02) {
      blinkRate = blinkRate - 0.0002;
    }
    if (blinkRate <= 1.02) {
      //blinkRate = blinkRate + 0.00002;
    }
      life = 1;
      //print("slow ");
    }

    
  void fast() {
    if (blinkRate < 1.06) {
      blinkRate = blinkRate + 0.0001;
    }
    if (blinkRate >= 1.06) {
      //blinkRate = blinkRate - 0.00001;
    }
      life = 1;
      //print("fast ");
    }
    
  
}