Block Teleporting Player Between Dimensions

[Lumby]

I've successfully created a dimension and a block that teleports the player to said dimension's 0, y, 0 position (y being the top most block in the world given the x z value). My problem, however, is getting the player to teleport back. My goal is to create the same type of teleport block in the other dimension, which holds a tileEntity that will store where in the overworld the player teleported from. When I did this, however, the game threw a runtime exception saying my tileEntity is missing a mapping and crashed spectacularly. My guess is this because my tileEntity isn't created until my player has finished teleporting to the other dimension, but I don't really know any other way of giving the block in the other dimension a BlockPos. Any suggestions on how to fix this, or just a overall better approach would be more than welcome. Thanks in advance!

 

Block code:

public class NightmareObelisk extends BlockBase{
	public NightmareObelisk(String name, Material material) {
		super(name, material);
		setSoundType(SoundType.STONE);
		setResistance(18000000.0F);
		setBlockUnbreakable();
		
		
	}
	
	@Override
	public boolean onBlockActivated(World worldIn, BlockPos pos, IBlockState state, EntityPlayer playerIn,
			EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {
		
		if(worldIn.provider.getDimension() == 0) {
	        if (!worldIn.isRemote && !playerIn.isRiding() && !playerIn.isBeingRidden())
	        {
	        	BlockPos nightmareSpawn = getAndCreateSpawn(playerIn.getServer().getWorld(Reference.NIGHTMARE), playerIn.getPosition());
	        	CustomTeleporter.teleportToDimension(playerIn, 
	        			Reference.NIGHTMARE, 
	        			nightmareSpawn.getX(), 
	        			nightmareSpawn.getY(), 
	        			nightmareSpawn.getZ()
        			);
	        	return true;
	        }
		}else if(worldIn.provider.getDimension() == Reference.NIGHTMARE) {
	        if (!worldIn.isRemote && !playerIn.isRiding() && !playerIn.isBeingRidden())
	        {	
	        	if(worldIn.getTileEntity(pos) instanceof TileEntityNightmareObelisk){
		        	BlockPos respawnPos = ((TileEntityNightmareObelisk)worldIn.getTileEntity(pos)).getTargetPos();
		        	CustomTeleporter.teleportToDimension(playerIn, 0, respawnPos.getX(), respawnPos.getY(), respawnPos.getZ());
	        	}

	        	return true;
	        }
		}

		
        return false;
	}
	
	private BlockPos getAndCreateSpawn(World world, BlockPos overworldPos) {
		BlockPos outputPos  = world.getTopSolidOrLiquidBlock(new BlockPos(0,0,0)).up();
		world.setBlockState(outputPos, ModBlocks.BedrockBrick.getDefaultState());
		world.setBlockState(outputPos.east(), ModBlocks.BedrockBrick.getDefaultState());
		world.setBlockState(outputPos.west(), ModBlocks.BedrockBrick.getDefaultState());
		world.setBlockState(outputPos.north(), ModBlocks.BedrockBrick.getDefaultState());
		world.setBlockState(outputPos.north().east(), ModBlocks.BedrockBrick.getDefaultState());
		world.setBlockState(outputPos.north().west(), ModBlocks.BedrockBrick.getDefaultState());
		world.setBlockState(outputPos.south(), ModBlocks.BedrockBrick.getDefaultState());
		world.setBlockState(outputPos.south().east(), ModBlocks.BedrockBrick.getDefaultState());
		world.setBlockState(outputPos.south().west(), ModBlocks.BedrockBrick.getDefaultState());
		
		world.setBlockState(outputPos.up().north(), ModBlocks.NightmareObelisk.getDefaultState());
		world.setBlockState(outputPos.up().north().up(), Blocks.STONE_SLAB.getDefaultState());
		world.setBlockState(outputPos.up(), Blocks.TORCH.getDefaultState());
		if(world.getTileEntity(outputPos.up().north()) instanceof TileEntityNightmareObelisk) {
			((TileEntityNightmareObelisk)world.getTileEntity(outputPos.up().north())).setTargetPos(overworldPos.getX(), overworldPos.getY(), overworldPos.getZ());
		}
		
		outputPos = outputPos.up();
		return outputPos;
		
	}
	
	@Override
    public TileEntity createTileEntity(World world, IBlockState state) {
    	TileEntityNightmareObelisk tileEntityNightmareObelisk = new TileEntityNightmareObelisk();
        
        return tileEntityNightmareObelisk;
 
    }
    
    @Override
    public boolean hasTileEntity(IBlockState state) {
    	return true;
    }
    


}

 

 

 

The CustomTeleporter code: 

public class CustomTeleporter extends Teleporter{

	private final WorldServer world;
	private double x,y,z;
	
	public CustomTeleporter(WorldServer world, double x, double y, double z) {
		super(world);
		this.world = world;
		this.x = x;
		this.y = y;
		this.z = z;
	}
	
	public void placeInPortal(Entity entity, float rotationYaw) {
		this.world.getBlockState(new BlockPos((int)this.x, (int)this.y, (int)this.z));
		entity.setPosition(x, y, z);
		entity.motionX = 0F;
		entity.motionY = 0F;
		entity.motionZ = 0F;
	}

	public static void teleportToDimension(EntityPlayer player, int dimension, double x, double y, double z) {
		int oldDimension = player.getEntityWorld().provider.getDimension();
		EntityPlayerMP entityPlayerMP = (EntityPlayerMP)player;
		MinecraftServer server = player.getEntityWorld().getMinecraftServer();
		WorldServer worldServer = server.getWorld(dimension);
		
		if(worldServer == null || server == null) {
			throw new IllegalArgumentException("Dimension: " +dimension + " doesn't exist");
		}
		worldServer.getMinecraftServer().getPlayerList().transferPlayerToDimension(entityPlayerMP, dimension, new CustomTeleporter(worldServer, x,y,z));
		player.setPositionAndUpdate(x, y, z);
	}
	
}

 

 

 

 

TileEntity code:

public class TileEntityNightmareObelisk extends TileEntity{
	private int x,y,z;
	
	public TileEntityNightmareObelisk() {
		this.x = 0;
		this.y = 0;
		this.z = 0;
	}
	
	
	@Override
	public void readFromNBT(NBTTagCompound compound)
	{
		super.readFromNBT(compound);
		if (compound.hasKey("x") && compound.hasKey("y") && compound.hasKey("z")) {
			x = compound.getInteger("x");
			y = compound.getInteger("y");
			z = compound.getInteger("z");
		}else {
			x=0;
			y=0;
			z=0;
		}

	}
	
	@Override
	public NBTTagCompound writeToNBT(NBTTagCompound compound) 
	{
		super.writeToNBT(compound);
		
		compound.setInteger("x", x);
		compound.setInteger("y", y);
		compound.setInteger("z", z);
		
		
		return compound;
	}
	
	public BlockPos getTargetPos() {
		return new BlockPos(this.x, this.y, this.z);
	}
	
	public void setTargetPos(int x, int y, int z) {
		this.x = x;
		this.y = y;
		this.z = z;
	}

	
}

 

 

 

Edited October 14, 2018 by Lumby

[Animefan8888]

  On 10/14/2018 at 3:38 AM, Lumby said:

is missing a mapping

Expand  

This means you did not register the tile entity. However if you store this in a TileEntity it will only store it once for all players. So you should store it in the player as a capability instead.

[Lumby]

My bad, sorry that was a dumb move on my part -.- I keep forgetting to register my tile entities. Thanks for helping and tolerating my ignorance lol.

 

  On 10/14/2018 at 3:43 AM, Animefan8888 said:

it will only store it once for all players.

Expand  

For my purposes it doesn't matter since I'll only have one of these portals in my world. I did however, also think about using capabilities to handle this beforehand, but I read somewhere that whenever a player respawns or dies custom capabilities added by forge are cleared and need to be readded through a player clone. I didn't want to bother with that if all players are going to teleport to the same place any way. I'm still curious though, is that true?

[Animefan8888]

  On 10/14/2018 at 3:54 AM, Lumby said:

I'm still curious though, is that true?

Expand  

Yes, but it is as simple as copying over the data from the previous player instance to the new one in the PlayerCloneEvent.

  On 10/14/2018 at 3:54 AM, Lumby said:

For my purposes it doesn't matter since I'll only have one of these portals in my world.

Expand  

I assume you mean one portal in the overworld/nether/end(whatever dimension you travel from to get to your dimension). Would I be correct in assuming that?

 

[Lumby]

  On 10/14/2018 at 3:58 AM, Animefan8888 said:

Would I be correct in assuming that?

Expand  

Yes sir