100% Generation? [1.12.2]

[StudioMaker]

Hey, i want to have my snow block to generate 100 % on stone over the y cords 110. Is it possible to do that? This is my class rn

 

package com.studiomaker.poweredelements2.world.gen;

import java.util.Random;

import com.studiomaker.poweredelements2.init.ModBlocks;

import net.minecraft.block.state.pattern.BlockMatcher;
import net.minecraft.init.Blocks;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraft.world.chunk.IChunkProvider;
import net.minecraft.world.gen.IChunkGenerator;
import net.minecraft.world.gen.feature.WorldGenMinable;
import net.minecraft.world.gen.feature.WorldGenerator;
import net.minecraftforge.fml.common.IWorldGenerator;
import net.minecraftforge.fml.common.Mod.EventHandler;

public class WorldGenCustomOres implements IWorldGenerator
{
	private WorldGenerator snow_mountain;
	// private WorldGenerator energetic_ore_block;
	// private WorldGenerator red_crystal;
	
	public WorldGenCustomOres() 
	{	
		
		snow_mountain = new WorldGenMinable(ModBlocks.SNOW_MOUNTAIN.getDefaultState(), 3, BlockMatcher.forBlock(Blocks.STONE));
		// energetic_ore_block = new WorldGenMinable(ModBlocks.ENERGETIC_ORE_BLOCK.getDefaultState(), 3, BlockMatcher.forBlock(Blocks.STONE));
	}
	
	@Override
	public void generate(Random random, int chunkX, int chunkZ, World world, IChunkGenerator chunkGenerator, IChunkProvider chunkProvider) 
	{
		switch(world.provider.getDimension())
		{
		case 0:
			
			runGenerator(snow_mountain, world, random, chunkX, chunkZ, 255, 110, 100);
			// runGenerator(energetic_ore_block, world, random, chunkX, chunkZ, 50, 0, 100);
			
		}
	}
	
	private void runGenerator(WorldGenerator gen, World world, Random rand, int chunkX, int chunkZ, int chance, int minHeight, int maxHeight)
	{
		if(minHeight > maxHeight || minHeight < 0 || maxHeight > 256) throw new IllegalArgumentException("Ore generated out of bounds");
		
		int heightDiff = maxHeight - minHeight + 1;
		for(int i = 0; i < chance; i++)
		{
			int x = chunkX * 32 + rand.nextInt(32);
			int y = minHeight + rand.nextInt(heightDiff);
			int z = chunkZ * 32 + rand.nextInt(32);
			
			gen.generate(world, rand, new BlockPos(x,y,z));
		}
	}
}

 

[Matryoshika]

The generators are given the chunkx & chunkz coordinates.
From there, you need to manually iterate over 0-16 for both x & z. From there, calculate (chunkx << 4) + x to get the actual blockX coordinate. Do the same for z.
There should be a method in the World object to get the top block (blockY coordinate) (World::getHeight or World::getTopSolidBlock; Not at my IDE so can't provide the exact name).
Now you got all three positions, which means you should be able to spawn the snow at blockX, blockY + 1, blockZ.

(the "<< 4" is a bit-shift operator. It's equivalent to doing "n * 16". Bit shifting should be done instead of multiplying/dividing by 16 because dividing negative chunk coordinates will result in wrong coordinates as integers get rounded down)

[Draco18s]

1 hour ago, Matryoshika said:

(the "<< 4" is a bit-shift operator. It's equivalent to doing "n * 16". Bit shifting should be done instead of multiplying/dividing by 16 because dividing negative chunk coordinates will result in wrong coordinates as integers get rounded down)

More or less. In this case, yes.

 

However, blockX >> 4 and blockX / 16 are not the same.

For example:

-280 >> 4 = -18

-280 / 16 = -17