//At the Top
ArrayList<Splosion> explosions = new ArrayList<Splosion>();


//At the bottom of your draw code
drawExplosions();



//To make an Explosion
 Explode(x, y, number of Sparks, length of explosion);

Ex  Explode(50, 80, 8, 10);

8 sparks that go for 10 frames located at (50,80)


//Paste ALL this at the bottom of your program



void drawExplosions() {
  for (int i =0; i < explosions.size(); i++) explosions.get(i).render();


  for (int i =0; i < explosions.size(); i++) {
    if (explosions.get(i).countdown < 0) explosions.remove(i);
  }
}


void Explode(int x, int y, int s, int d) {
  explosions.add(new Splosion(x, y, s, d));
}





class Mover {
  float x, y; 
  float sx, sy, ax, ay;
  Mover (float a, float b) {
    this.x = a;
    this.y = b;

    this.sx = 0;
    this.sy = 0;

    this.ax = 0;
    this.ay = 0;
  }

  void move() {

    this.sx += this.ax;
    this.sy += this.ay;
    this.x += this.sx;
    this.y += this.sy;
  }
}

class Particle extends Mover {

  Particle (float x, float y, float sx, float sy) {
    super(x, y);
    this.sx = sx;
    this.sy = sy;
  }


  void render() {
    this.move();

    float size = dist(0, 0, this.sx, this.sy);

    rect(this.x, this.y, size, size);
  }
}


class Splosion {
  Particle[] bits;
  int[] fades;
  int countdown;
  int max;
  Splosion (float x, float y, int s, int d) {
    bits = new Particle[s];
    fades = new int[s];
    for (int i=0; i < s; i++) {
      bits[i] = new Particle(x, y, -10 + random(20), random(20) - 10);
      fades[i] = rando(255);
    }
    this.max = d;
    this.countdown = d;
  }

  void render() {
    for (int i=0; i < this.bits.length; i++) {
      if (this.fades[i] > 0) {
        fill(255, 255, 255, this.fades[i]);

        this.bits[i].render();
        this.fades[i] --;
      }
    }

    this.countdown--;
  }
}



int rando(int n) {
  return floor(random(n));
}