public boolean build(Player p, int tips, int id) {
   if (!plugin.getConfig().getBoolean("allow.zero_room")) {
     TARDISMessage.send(p, "ZERO_DISABLED");
     return true;
   }
   TARDISInteriorPostioning tintpos = new TARDISInteriorPostioning(plugin);
   int slot = tips;
   if (tips == -1) {
     slot = tintpos.getFreeSlot();
     // uodate TARDIS table with new slot number
     QueryFactory qf = new QueryFactory(plugin);
     HashMap<String, Object> set = new HashMap<String, Object>();
     set.put("tips", slot);
     HashMap<String, Object> where = new HashMap<String, Object>();
     where.put("tardis_id", id);
     qf.doUpdate("tardis", set, where);
   }
   TARDISTIPSData pos = tintpos.getTIPSData(slot);
   int x = pos.getCentreX();
   int y = 64;
   int z = pos.getCentreZ();
   World w = plugin.getServer().getWorld("TARDIS_Zero_room");
   if (w == null) {
     TARDISMessage.send(p, "ZERO_NOT_FOUND");
     return true;
   }
   Location l = new Location(w, x, y, z);
   TARDISRoomBuilder builder = new TARDISRoomBuilder(plugin, "ZERO", l, COMPASS.SOUTH, p);
   if (builder.build()) {
     UUID uuid = p.getUniqueId();
     // ok, room growing was successful, so take their energy!
     int amount = plugin.getRoomsConfig().getInt("rooms.ZERO.cost");
     QueryFactory qf = new QueryFactory(plugin);
     HashMap<String, Object> set = new HashMap<String, Object>();
     set.put("uuid", p.getUniqueId().toString());
     qf.alterEnergyLevel("tardis", -amount, set, p);
     // remove blocks from condenser table if rooms_require_blocks is true
     if (plugin.getConfig().getBoolean("growth.rooms_require_blocks")) {
       TARDISCondenserData c_data = plugin.getGeneralKeeper().getRoomCondenserData().get(uuid);
       for (Map.Entry<String, Integer> entry : c_data.getBlockIDCount().entrySet()) {
         HashMap<String, Object> wherec = new HashMap<String, Object>();
         wherec.put("tardis_id", c_data.getTardis_id());
         wherec.put("block_data", entry.getKey());
         qf.alterCondenserBlockCount(entry.getValue(), wherec);
       }
       plugin.getGeneralKeeper().getRoomCondenserData().remove(uuid);
     }
     // are we doing an achievement?
     if (plugin.getAchievementConfig().getBoolean("rooms.enabled")) {
       TARDISAchievementFactory taf =
           new TARDISAchievementFactory(
               plugin, p, "rooms", plugin.getBuildKeeper().getSeeds().size());
       taf.doAchievement("ZERO");
     }
   }
   return true;
 }