getHighestBlockYAt returning 0 even though chunk is loaded [818]

I call this with a random x and z:

Code:

    public void loadSpawn(int x, int z)
    {
        log.info("Chunk loaded successfully: " + world.loadChunk(x/16, z/16, true));
        int spawnY = world.getHighestBlockYAt(x, z);
        log.info("Setting spawn at [" + x + ", " + spawnY + ", " + z + "]");
        world.getBlockAt(x, spawnY, z).setType(Material.SPONGE);
        world.setSpawnLocation(x, spawnY, z);
    }

and get this output:

Code:

13:22:09 [INFO] [Siege] Initializing...
13:22:09 [INFO] [Siege] Chunk loaded successfully: true
13:22:09 [INFO] [Siege] Setting spawn at [8273, 0, -525]

However, if I use a chunk loaded by the game (not the loadChunk method) I get the correct y.

 

I have the same problem. Solution?

 

I watched this thread long ago when I had this problem.

It isn't pretty, but this is how I solved it:

Code:

public int getHighestBlockYAt(int x, int z, World world) {
        ensureChunkLoaded(x, z, world);
        return world.getHighestBlockYAt(x, z);
    }
    
    //Make sure the target is loaded, if not, load it
    public void ensureChunkLoaded(int x, int z, World world) {
        //Apparently all the chunk functions need to deal with chunk ints, or with a Chunk type variable, so make a location
        Location randlocation = new Location(world, Double.parseDouble(Integer.toString(x)), 0.0, Double.parseDouble(Integer.toString(z)));
        //To get a Chunk
        Chunk chunk = world.getChunkAt(randlocation);
        //To check if loaded and if not load
        if(!world.isChunkLoaded(chunk)) world.loadChunk(chunk);
    }

Hope this helps, although looking at this old code makes me cringe, it does work.

 

Cool, I was having this problem with my world generator. Finally a solution!