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Generate Ore in Nether


admiralmattbar

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Hello All,

 

I've been having trouble generating ore in the Nether. My ore generates fine in Overworld, but it never shows up below.

Here is my WorldGenOre class:

package org.gsa.basemod.World;


import net.minecraft.block.state.IBlockState;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraft.world.chunk.IChunkGenerator;
import net.minecraft.world.chunk.IChunkProvider;
import net.minecraft.world.gen.feature.WorldGenMinable;
import net.minecraftforge.fml.common.IWorldGenerator;
import org.gsa.basemod.init.ModBlocks;

import java.util.Random;

public class WorldGenOre implements IWorldGenerator {


    @Override
    public void generate(Random random, int chunkX, int chunkZ, World world, IChunkGenerator chunkGenerator, IChunkProvider chunkProvider) {

        /*
        if(world.provider.getDimension() == 0) {
            generateOverworld(random, chunkX, chunkZ, world, chunkGenerator, chunkProvider);
        }
        */
        if(world.provider.getDimension() == -1){
            generateNether(random, chunkX, chunkZ, world, chunkGenerator, chunkProvider);
        }

    }

    private void generateOverworld(Random random, int chunkX, int chunkZ, World world, IChunkGenerator chunkGenerator, IChunkProvider chunkProvider) {
        /*
        This method is what places the blocks in the world. Size aregument gives minimum number per chunk and adds a random number up to but not including 4. Chances is
        how many times the probability of the ore is checked per chunk.
         */
        generateOre(ModBlocks.dice.getDefaultState(), world, random, chunkX * 16, chunkZ * 16, 16, 100, 4 + random.nextInt(4), 16);
    }

    private void generateNether(Random random, int chunkX, int chunkZ, World world, IChunkGenerator chunkGenerator, IChunkProvider chunkProvider) {
        /*
        This method is what places the blocks in the world. Size aregument gives minimum number per chunk and adds a random number up to but not including 4. If it's too high the game crashes.
        Chances is how many times the probability of the ore is checked per chunk.
         */
        generateOre(ModBlocks.dice.getDefaultState(), world, random, chunkX * 16, chunkZ * 16, 0, 256, 10 + random.nextInt(4), 10);
    }

    private void generateOre(IBlockState ore, World world, Random random, int x, int z, int minY, int maxY, int size, int chances){

        int deltaY = maxY - minY;
        for(int i=0; i<chances; i++){
            BlockPos pos = new BlockPos(x + random.nextInt(16), minY + random.nextInt(deltaY), z + random.nextInt(16));
            WorldGenMinable generator = new WorldGenMinable(ore, size);
            generator.generate(world, random, pos);
        }
    }
}

I've also tried it with switch statements and got the same results. i can find the dice blocks in Overworld but not the Nether.

 

Thanks!

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If you use the WorldGenMinable(IBlockState, int) constructor, your ore will only generate in the "natural" variants of Blocks.STONE (i.e. Stone, Granite, Diorite or Andesite; but not the Smooth variants). These don't normally generate in the Nether, so your ore won't generate either.

 

To generate your ore in other blocks, you need to use the WorldGenMinable(IBlockState, int, Predicate<IBlockState>) constructor and supply a Predicate that returns true for the block(s) your ore can generate in.

 

Vanilla provides several Predicate<IBlockState> implementations in the net.minecraft.block.state.pattern package, you can also specify your own using a lambda or method reference.

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Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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This code worked. I'll probably bring back the switch statement next.

 

package org.gsa.basemod.World;
 
 
import net.minecraft.block.Block;
import net.minecraft.block.state.IBlockState;
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.IChunkGenerator;
import net.minecraft.world.chunk.IChunkProvider;
import net.minecraft.world.gen.feature.WorldGenMinable;
import net.minecraftforge.fml.common.IWorldGenerator;
import org.gsa.basemod.init.ModBlocks;
 
import java.util.Random;
 
public class WorldGenOre implements IWorldGenerator {
 
 
 
    @Override
    public void generate(Random random, int chunkX, int chunkZ, World world, IChunkGenerator chunkGenerator, IChunkProvider chunkProvider) {
 
 
        if(world.provider.getDimension() == 0) {
            generateOverworld(random, chunkX, chunkZ, world, chunkGenerator, chunkProvider);
        }
 
        if(world.provider.getDimension() == -1){
            generateNether(random, chunkX, chunkZ, world, chunkGenerator, chunkProvider);
        }
 
    }
 
    private void generateOverworld(Random random, int chunkX, int chunkZ, World world, IChunkGenerator chunkGenerator, IChunkProvider chunkProvider) {
        /*
        This method is what places the blocks in the world. Size aregument gives minimum number per chunk and adds a random number up to but not including 4. Chances is
        how many times the probability of the ore is checked per chunk.
         */
        generateOre(ModBlocks.dice.getDefaultState(), world, random, chunkX * 16, chunkZ * 16, 16, 100, 4 + random.nextInt(4), 16, Blocks.STONE);
    }
 
    private void generateNether(Random random, int chunkX, int chunkZ, World world, IChunkGenerator chunkGenerator, IChunkProvider chunkProvider) {
        /*
        This method is what places the blocks in the world. Size arguement gives minimum number per chunk and adds a random number up to but not including 4. If it's too high the game crashes.
        Chances is how many times the probability of the ore is checked per chunk.
         */
        generateOre(ModBlocks.dice.getDefaultState(), world, random, chunkX * 16, chunkZ * 16, 0, 256, 10 + random.nextInt(4), 10, Blocks.NETHERRACK);
/*At the end you call a block that your ore can generate on. This includes any natural state of Netherrack. The default is stone, so if you don't call this in WorldGenMinable your ore won't generate in the Nether because there is no stone in the nether.*/
    }
 
    private void generateOre(IBlockState ore, World world, Random random, int x, int z, int minY, int maxY, int size, int chances, Block block){
 
        int deltaY = maxY - minY;
        for(int i=0; i<chances; i++){
            BlockPos pos = new BlockPos(x + random.nextInt(16), minY + random.nextInt(deltaY), z + random.nextInt(16));
            WorldGenMinable generator = new WorldGenMinable(ore, size, BlockMatcher.forBlock(block));
            //The last parameter in the WorldGenMinable constructor is the block your ore can generate on.
            generator.generate(world, random, pos);
        }
    }
}

 

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