class Fire {
  float x, y;
  float vx, vy;

  
  /*Flake(float xpos, float ypos, float velx, float vely, int ittl, int ir, int ig, int ib)
  {
    r = ir; g = ig; b = ib;
    x = xpos;
    y = ypos;
    vx = velx;
    vy = vely;
    ttl = ittl;
  }*/
}

class Firework
{
  float x, y;
  int r, g, b;
  int ttl;
  Fire[] children;
}

class FireworksShow {
  int w, h;
  Firework[] works;
  int newest;
  
  FireworksShow(int wi, int hi)
  {
    w = wi;
    h = hi;
    works = new Firework[10];
    newest = 0;
  }
  
  void Draw(float xpos, float ypos, int s)
  {
    int rand = int(random(w*s));
    if (works[newest] == null)
    {
      if (rand % 50 == 0) {
        Firework r = new Firework();
        r.x = rand;
        r.y = h*s;
        r.ttl = int(random(20,50));
        r.children = null;
        r.r = int(100 + random(0,150));
        r.g = int(100 + random(0,150));
        r.b = int(100 + random(0,150));
        works[newest] = r;
        newest = (newest + 1) % works.length;
        println("created new");
      }
    }
    
    for (int i = 0; i < works.length; i++)
    {

      rand = int(random(w));
      if (works[i] != null)
      {
        //println("in");
        stroke(works[i].r, works[i].g, works[i].b);
        fill(works[i].r, works[i].g, works[i].b);
      
        if (works[i].children != null)
        {
          works[i].ttl--;
          for (int j = 0; j < works[i].children.length; j++)
          {
            if (works[i].children[j].x < 3*s)
              continue;
            if (works[i].children[j].x > (w-3)*s)
              continue;
            if (works[i].children[j].y > (h - 5)*s)
              continue;
            
            works[i].children[j].x += works[i].children[j].vx;
            works[i].children[j].y += works[i].children[j].vy;
            works[i].children[j].vy += .01;
            
            if (works[i].children[j].y < 3*s)
              continue;
            
            rect(xpos + works[i].children[j].x, ypos + works[i].children[j].y, s, s);
           // println("e");
          }
          if (works[i].ttl < 0)
            works[i] = null;
        }
        else
        {
          works[i].y -= 3;
          works[i].ttl--;
          if (works[i].ttl < 0)
          {
            works[i].children = new Fire[30];
            float ang = 0;
            works[i].ttl = 200;
            for (int j = 0; j < works[i].children.length; j++)
            {
              ang = 360.0 * j / float(works[i].children.length);
              works[i].children[j] = new Fire();
              works[i].children[j].x = works[i].x;
              works[i].children[j].y = works[i].y;
              works[i].children[j].vx = cos(ang);
              works[i].children[j].vy = sin(ang);
            }
          }
          rect(xpos + works[i].x, ypos + works[i].y, s, s);
//          println("a");
        }
        
        //println( (xpos + works[i].x) + ", " + (ypos + works[i].y) );
      }
    }
    
    /*
    for (int i = 0; i < flakes.length; i++)
    {
      rand = int(random(w));
      if (flakes[i] != null)
      {
        if (random(1) > .5)
        {
          flakes[i].y += rand % 2;
          flakes[i].vx += (rand % 3) - 1;
          if (flakes[i].vx > 5)
            flakes[i].vx = 5;
          if (flakes[i].vx < -5)
            flakes[i].vx = -5;
          flakes[i].x += flakes[i].vx * .2;
          if (flakes[i].x < 3*s)
            flakes[i].x = 3*s;
          if (flakes[i].x > (w-3)*s)
            flakes[i].x = (w-3)*s;
        }
        
        PImage type = types[flakes[i].t];
        image(type, xpos + flakes[i].x, ypos + flakes[i].y, type.width*s, type.height*s);
        
        if (flakes[i].y > (h - 10 + flakes[i].depth)*s)
        {
          //bg.beginDraw();
          //bg.image(type, flakes[i].x/s, flakes[i].y/s);
          //bg.endDraw();
          flakes[i] = null;
        }
      }
    }*/
  }
}