I have GameRegistry.registerWorldGenerator(new RainbowGeneration(), 0); in my main mod file under PreInit.

 

I have no problems, errors, red underline at all in my mod, but no ore spawns, and I need help.

And I used Mr. Crayfishes' 1.7 modding tutorials and his worked fine.

Below is my RainbowGeneration.java

 

 

 

 

 

 

 

package giratinaninja.Xcite;

 

import java.util.Random;

 

import net.minecraft.block.Block;

import net.minecraft.init.Blocks;

import net.minecraft.world.World;

import net.minecraft.world.chunk.IChunkProvider;

import net.minecraft.world.gen.feature.WorldGenMinable;

import cpw.mods.fml.common.IWorldGenerator;

 

public class RainbowGeneration implements IWorldGenerator {

 

@Override

public void generate(Random random, int chunkX, int chunkZ, World world,

IChunkProvider chunkGenerator, IChunkProvider chunkProvider) {

switch (world.provider.dimensionId) {

case 1:

generateEnd(world, random, chunkX, chunkZ);

break;

case 0:

generateOverworld(world, random, chunkX, chunkZ);

break;

case -1:

generateNether(world, random, chunkX, chunkZ);

break;

}

}

 

 

public void generateNether(World world, Random rand, int x, int z) {

generateOre(XcitementMod.blockRainbowore, world, rand, x, z, 2, 10, 5,

0, 100, Blocks.stone);

}

 

public void generateOverworld(World world, Random rand, int x, int z) {

generateOre(XcitementMod.blockRainbowore, world, rand, x, z, 2, 10, 5,

0, 100, Blocks.stone);

}

 

// generateOre(XcitementMod.blockRainbowore, world, rand, x, z, 1, 3, 60, 0,

// 40, Blocks.stone);

 

public void generateEnd(World world, Random rand, int x, int z) {

generateOre(XcitementMod.blockRainbowore, world, rand, x, z, 2, 10, 5,

0, 100, Blocks.end_stone);

}

 

public void generateOre(Block block, World world, Random random,

int chunkX, int chunkZ, int minVeinSize, int maxVeinSize,

int chance, int minY, int maxY, Block generateIn) {

int vienSize = minVeinSize + random.nextInt(maxVeinSize - minVeinSize);

int heightRange = maxY - minY;

WorldGenMinable gen = new WorldGenMinable(block, vienSize, generateIn);

for (int i = 0; i < chance; i++) {

int xRand = chunkX * 16 + random.nextInt(16);

int yRand = random.nextInt(heightRange + minY);

int zRand = chunkZ * 16 + random.nextInt(16);

gen.generate(world, random, xRand, yRand, zRand);

 

}

}

}

 

Probably it's because your ore is too rare to find.

Try adjusting the chance value around 100.

Isn't it because you gave your generator a weighting of 0 when you registered it?