How to use

isDimensionRegistered

method

in

net.minecraftforge.common.DimensionManager

@Nullable
private static Integer findFreeDimensionID()
{
  for (int i=2; i<Integer.MAX_VALUE; i++)
  {
    if (!DimensionManager.isDimensionRegistered(i))
    {
      // DEBUG
      System.out.println("Found free dimension ID = "+i);
      return i;
    }
  }
  
  // DEBUG
  System.out.println("ERROR: Could not find free dimension ID");
  return null;
}

@Nullable
public World getWorld(MinecraftServer server) {
  World world = this.world.get();
  if (world == null && DimensionManager.isDimensionRegistered(dimension)) {
    this.world = new WeakReference<>(world = server.getWorld(dimension));
  }
  return world;
}

public static @Nonnull String getDimenionName(int dim) {
 if (!DimensionManager.isDimensionRegistered(dim)) {
  return Integer.toString(dim);
 }
 DimensionType type = DimensionManager.getProviderType(dim);
 if (type == null) {
  return Integer.toString(dim);
 }
 String name = type.getName();
 int[] dims = DimensionManager.getDimensions(type);
 if (dims != null && dims.length > 1) {
  name += " " + dim;
 }
 return name;
}

@Nullable
public ForgeChunkManager.Ticket requestTicket(MinecraftServer server, TicketKey key)
{
  ForgeChunkManager.Ticket ticket = ticketMap.get(key);
  if (ticket == null && DimensionManager.isDimensionRegistered(key.dimension))
  {
    WorldServer worldServer = server.getWorld(key.dimension);
    ticket = ForgeChunkManager.requestTicket(FTBUtilities.INST, worldServer, ForgeChunkManager.Type.NORMAL);
    if (ticket != null)
    {
      ticketMap.put(key, ticket);
      ticket.getModData().setString("Team", key.teamId);
    }
  }
  return ticket;
}

  @Override
  public void fromNBT(NBTTagCompound tag) {
    NBTTagList list = tag.getTagList("list", MinecraftHelpers.NBTTag_Types.NBTTagCompound.ordinal());

    for(int i = 0; i < list.tagCount(); i++) {
      NBTTagCompound elementTag = list.getCompoundTagAt(i);
      int dimensionId = elementTag.getInteger("dimension");
      BlockPos pos = BlockPos.fromLong(elementTag.getLong("pos"));
      EnumFacing side = null;
      if (elementTag.hasKey("side", Constants.NBT.TAG_INT)) {
        side = EnumFacing.VALUES[elementTag.getInteger("side")];
      }

      if(!net.minecraftforge.common.DimensionManager.isDimensionRegistered(dimensionId)) {
        IntegratedDynamics.clog(Level.WARN, String.format("Skipped loading part from a network at the " +
            "invalid dimension id %s.", dimensionId));
      } else {
        World world = FMLCommonHandler.instance().getMinecraftServerInstance().getWorld(dimensionId);
        IPathElement pathElement = TileHelpers.getCapability(world, pos, side, PathElementConfig.CAPABILITY);
        if(pathElement == null) {
          IntegratedDynamics.clog(Level.WARN, String.format("Skipped loading part from a network at " +
              "position %s in world %s because it has no valid path element.", pos, dimensionId));
        } else {
          elements.add(SidedPathElement.of(pathElement, side));
        }
      }
    }
  }
}

if (!DimensionManager.isDimensionRegistered(chunk.getPos().dim))

    throw t;
  if (!DimensionManager.isDimensionRegistered(dimension)) {
    throw new CommandException("chat.cofh.command.world.notFound");
    throw t;
  if (!DimensionManager.isDimensionRegistered(dimension)) {
    throw new CommandException("chat.cofh.command.world.notFound");
  if (!DimensionManager.isDimensionRegistered(dimension)) {
    throw new CommandException("chat.cofh.command.world.notFound");
int dimension = CommandBase.parseInt(arguments[5]);
if (!DimensionManager.isDimensionRegistered(dimension)) {
  throw new CommandException("chat.cofh.command.world.notFound");