Mountains with Surface Builder

Hello guys! I have just started Minecraft modding recently and am trying to make another dimension. I got that to work with a custom biome but I want to make a custom mountain type that is very tall but thin. I decided to try to do this with Surface Builder but I do not now how to use Surface Builders. I tried to use the default mountain class as a test but I don't think it is working. Could you please give me some pointers on how to move forward. Thanks in advance!

public class ExtremeWaterfallsSurfaceBuilder extends SurfaceBuilder<SurfaceBuilderConfig> {

    public ExtremeWaterfallsSurfaceBuilder(Function<Dynamic<?>, ? extends SurfaceBuilderConfig> function) {
        super(function);
    }

    @Override
    public void buildSurface(Random random, IChunk chunkIn, Biome biomeIn, int x, int z, int startHeight, double noise,
                             BlockState defaultBlock, BlockState defaultFluid, int seaLevel, long seed, SurfaceBuilderConfig config) {
        Random rd = new Random();
        int i = rd.nextInt(3);
        if (i == 0) {
            SurfaceBuilder.DEFAULT.buildSurface(random, chunkIn, biomeIn, x, z, startHeight, noise, defaultBlock,
                    defaultFluid, seaLevel, seed,
                    new SurfaceBuilderConfig(Blocks.GRASS_BLOCK.getDefaultState(),
                            Blocks.DIRT.getDefaultState(), Blocks.STONE.getDefaultState()));

            //My attempt at a mountain surface builder
            SurfaceBuilder.MOUNTAIN.buildSurface(random, chunkIn, biomeIn, x, z, startHeight, noise, defaultBlock,
                    defaultFluid, seaLevel, seed,
                    new SurfaceBuilderConfig(Blocks.GRASS.getDefaultState(),
                            Blocks.DIRT.getDefaultState(), Blocks.STONE.getDefaultState()));


        } else {
            SurfaceBuilder.DEFAULT.buildSurface(random, chunkIn, biomeIn, x, z, startHeight, noise, defaultBlock,
                    defaultFluid, seaLevel, seed,
                    new SurfaceBuilderConfig(
                            i == 1 ? Blocks.GRASS_BLOCK.getDefaultState()
                                    : Blocks.DIRT.getDefaultState(),
                            Blocks.STONE.getDefaultState(), Blocks.WATER.getDefaultState()));
            SurfaceBuilder.MOUNTAIN.buildSurface(random, chunkIn, biomeIn, x, z, startHeight, noise, defaultBlock, defaultFluid, seaLevel, seed, new SurfaceBuilderConfig(Blocks.GRASS.getDefaultState(), Blocks.DIRT.getDefaultState(), Blocks.STONE.getDefaultState()));

        }
    }
}

Edited May 19, 20205 yr by Mine215