GradientDensityAsset

package com.hypixel.hytale.builtin.hytalegenerator.assets.density;

import com.hypixel.hytale.builtin.hytalegenerator.density.Density;
import com.hypixel.hytale.builtin.hytalegenerator.density.nodes.ConstantValueDensity;
import com.hypixel.hytale.builtin.hytalegenerator.density.nodes.GradientDensity;
import com.hypixel.hytale.codec.Codec;
import com.hypixel.hytale.codec.KeyedCodec;
import com.hypixel.hytale.codec.builder.BuilderCodec;
import com.hypixel.hytale.codec.validation.LegacyValidator;
import com.hypixel.hytale.codec.validation.Validators;
import com.hypixel.hytale.math.vector.Vector3d;
import javax.annotation.Nonnull;

public class GradientDensityAsset extends DensityAsset {
   public static final BuilderCodec<GradientDensityAsset> CODEC = BuilderCodec.builder(
         GradientDensityAsset.class, GradientDensityAsset::new, DensityAsset.ABSTRACT_CODEC
      )
      .append(new KeyedCodec<>("Axis", Vector3d.CODEC, false), (t, k) -> t.axis = k, k -> k.axis)
      .addValidator((LegacyValidator<? super Vector3d>)((v, r) -> {
         if (v.x == 0.0 && v.y == 0.0 && v.z == 0.0) {
            r.fail("Axis can't be zero.");
         }
      }))
      .add()
      .<Double>append(new KeyedCodec<>("SampleRange", Codec.DOUBLE, false), (t, k) -> t.sampleRange = k, t -> t.sampleRange)
      .addValidator(Validators.greaterThan(0.0))
      .add()
      .build();
   private Vector3d axis = new Vector3d(0.0, 1.0, 0.0);
   private double sampleRange = 1.0;

   public GradientDensityAsset() {
   }

   @Nonnull
   @Override
   public Density build(@Nonnull DensityAsset.Argument argument) {
      return (Density)(this.isSkipped()
         ? new ConstantValueDensity(0.0)
         : new GradientDensity(this.buildFirstInput(argument), this.sampleRange, this.axis.clone()));
   }

   @Override
   public void cleanUp() {
      this.cleanUpInputs();
   }
}