code: public void moveAll(ParticleEmitter emitter, float x, float y) {
  		ParticlePool pool = (ParticlePool) particlesByEmitter.get(emitter);
  		for (int i=0;i<pool.particles.length;i++) {
  			if (pool.particles[i].inUse()) {
  				pool.particles[i].move(x, y);
  			}
  		}
  	}
docs: Move all the particles owned by the specified emitter
  
  @param emitter The emitter owning the particles that should be released
  @param x The amount on the x axis to move the particles
  @param y The amount on the y axis to move the particles