code: public void setPosition(float x, float y, boolean moveParticles) {
  		if (moveParticles) {
  			adjust = true;
  			adjustx -= this.x - x;
  			adjusty -= this.y - y;
  		}
  		this.x = x;
  		this.y = y;		
  	}
docs: Set the position of this particle source
  
  @param x
  The x coodinate of that this emitter should spawn at
  @param y
  The y coodinate of that this emitter should spawn at
  @param moveParticles
  True if particles should be moved with the emitter