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]

2 minutes ago, Lumby said:

is missing a mapping

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.

 

10 minutes ago, Animefan8888 said:

it will only store it once for all players.

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]

1 minute ago, Lumby said:

I'm still curious though, is that true?

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

2 minutes ago, Lumby said:

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

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]

3 minutes ago, Animefan8888 said:

Would I be correct in assuming that?

Yes sir