public boolean onBlockBreak (Player player, Block block){
        int b = block.getType();
        int dist = 5;
        if(b==52){
            for (BaseEntity e : block.getWorld().getEntityList()){
                if (e.getEntity() instanceof OEntityXPOrb){
                    double distance = distance(e.getX(), e.getY(), e.getZ(), block.getX(), block.getY(), block.getZ());
                    if (distance <= dist){
                        e.destroy();
                    }
                }
            }
            player.getWorld().dropItem(block.getLocation(), 52);
        }
        return false;
    }
    public double distance(double x1, double y1, double z1, double x2, double y2, double z2) {
        return Math.sqrt(Math.pow((x1-x2),2)+Math.pow((y1-y2),2)+Math.pow((z1-z2),2));
    }