[1.10] Specific spawn areas for custom world generator?

[drok0920]

Hello again,

I am making a custom world generator that has large pillars and I find that i spawn on them more than on normal terrain.  This is an issue because they are around 100 blocks away from the ground.  These pillars are one whole chunk in size so my question is: is there a way to blacklist this chunks so i dont spawn in them.  I know that this is a strange question but any help would be apreiciated

[Draco18s]

I find that i spawn on them more than on normal terrain

 

...What?

[drok0920]

Sorry if my question was confusing but i have terrai nthat looks like this:

http://i1180.photobucket.com/albums/x401/Drok_/2016-07-16_18.51.59_zpss9japfrs.png[/img]

And I cant figure out how to stop the player from spawning on the bedrock.

[Matryoshika]

World#getSpawnPoint gives you a BlockPos of the world's spawn-point. Of course, the WorldProvider gives a "spawnfuzz" meaning players spawn randomly around that BlockPos provided by World#getSpawnPoint. Not much, but about anywhere within ~10 blocks out from the BlockPos.

 

Make sure that your worldGenerator does not spawn in a chunk that is within the world-generators range of the world#getSpawnPoint, and your issue should be solved.

[drok0920]

Sorry im confused could you explain what you mean?

[Matryoshika]

As you have not given any source code to go over, I will presume your "world generator" implements IWorldGenerator, and it not based on the decorate event.

 

You need to add a check before spawning the pillar.

Using the world.getSpawnPoint(); you get access to a BlockPos. Where the spawn-point is.

Before anything is placed, get the chunk you are currently in. The generate method supplemented by IWorldGenerator provides the chunkX & chunkZ coordinate.

 

Of course, as your pillars seem to be quite big, you need to check if your pillar generator is placing near the spawn-point. This can be done by having two for-loops (x-axis & z-axis), that each let's say start at negative 5, and end at positive 5, meaning you would check a 11x11 chunk area, centered on the spawn-chunk, if you modify the chunkX & chunkZ variable. It would be something akin to this:

for(int dx = min; dx < max; dx++){
for(int dz = min; dz < max; dz++){
	if(world.getChunkFromBlockCoords(world.getSpawnPoint()) == world.getChunkFromChunkCoords(chunkX+dx, chunkZ+dz)){
		return;
	}
}
}

Let's say the min variable is indeed -5, and max is 5. This means: if pillar generator tries to place a pillar in a chunk that is 5 or less chunks away from the spawn-chunk, then do not generate the pillar.