class="kw">package com.hypixel.hytale.math.util;

class="kw">import java.util.function.BiPredicate;
class="kw">import java.util.function.DoubleUnaryOperator;
class="kw">import javax.annotation.Nonnull;
class="kw">import javax.annotation.Nullable;
class="kw">import org.joml.Vector3d;
class="kw">import org.joml.Vector3i;

class="kw">public class="kw">final class NearestBlockUtil {
   class="kw">public class="kw">static class="kw">final NearestBlockUtil.IterationElement[] DEFAULT_ELEMENTS = new NearestBlockUtil.IterationElement[]{
      new NearestBlockUtil.IterationElement(-1, 0, 0, var0 -> 0.0, var0 -> var0, var0 -> var0),
      new NearestBlockUtil.IterationElement(1, 0, 0, var0 -> 1.0, var0 -> var0, var0 -> var0),
      new NearestBlockUtil.IterationElement(0, -1, 0, var0 -> var0, var0 -> 0.0, var0 -> var0),
      new NearestBlockUtil.IterationElement(0, 1, 0, var0 -> var0, var0 -> 1.0, var0 -> var0),
      new NearestBlockUtil.IterationElement(0, 0, -1, var0 -> var0, var0 -> var0, var0 -> 0.0),
      new NearestBlockUtil.IterationElement(0, 0, 1, var0 -> var0, var0 -> var0, var0 -> 1.0)
   };

   class="kw">private NearestBlockUtil() {
      throw new UnsupportedOperationException();
   }

   @Nullable
   class="kw">public class="kw">static <T> Vector3i findNearestBlock(@Nonnull Vector3d var0, @Nonnull BiPredicate<Vector3i, T> var1, T var2) {
      class="kw">return findNearestBlock(DEFAULT_ELEMENTS, var0.x(), var0.y(), var0.z(), var1, var2);
   }

   @Nullable
   class="kw">public class="kw">static <T> Vector3i findNearestBlock(
      @Nonnull NearestBlockUtil.IterationElement[] var0, @Nonnull Vector3d var1, @Nonnull BiPredicate<Vector3i, T> var2, T var3
   ) {
      class="kw">return findNearestBlock(var0, var1.x(), var1.y(), var1.z(), var2, var3);
   }

   @Nullable
   class="kw">public class="kw">static <T> Vector3i findNearestBlock(double var0, double var2, double var4, @Nonnull BiPredicate<Vector3i, T> var6, T var7) {
      class="kw">return findNearestBlock(DEFAULT_ELEMENTS, var0, var2, var4, var6, var7);
   }

   @Nullable
   class="kw">public class="kw">static <T> Vector3i findNearestBlock(
      @Nonnull NearestBlockUtil.IterationElement[] var0, double var1, double var3, double var5, @Nonnull BiPredicate<Vector3i, T> var7, T var8
   ) {
      int var9 = MathUtil.floor(var1);
      int var10 = MathUtil.floor(var3);
      int var11 = MathUtil.floor(var5);
      double var12 = var1 - var9;
      double var14 = var3 - var10;
      double var16 = var5 - var11;
      Vector3i var26 = null;
      Vector3i var27 = new Vector3i();
      double var28 = Double.POSITIVE_INFINITY;

      for (NearestBlockUtil.IterationElement var33 : var0) {
         double var18 = var12 - var33.getX().applyAsDouble(var12);
         double var20 = var14 - var33.getY().applyAsDouble(var14);
         double var22 = var16 - var33.getZ().applyAsDouble(var16);
         double var24 = var18 * var18 + var20 * var20 + var22 * var22;
         var27.set(var9 + var33.getOffsetX(), var10 + var33.getOffsetY(), var11 + var33.getOffsetZ());
         if (var24 < var28 && var7.test(var27, var8)) {
            var28 = var24;
            if (var26 == null) {
               var26 = new Vector3i();
            }

            var26.set(var27);
         }
      }

      class="kw">return var26;
   }

   class="kw">public class="kw">static class IterationElement {
      class="kw">private class="kw">final int ox;
      class="kw">private class="kw">final int oy;
      class="kw">private class="kw">final int oz;
      class="kw">private class="kw">final DoubleUnaryOperator x;
      class="kw">private class="kw">final DoubleUnaryOperator y;
      class="kw">private class="kw">final DoubleUnaryOperator z;

      class="kw">public IterationElement(int var1, int var2, int var3, DoubleUnaryOperator var4, DoubleUnaryOperator var5, DoubleUnaryOperator var6) {
         this.ox = var1;
         this.oy = var2;
         this.oz = var3;
         this.x = var4;
         this.y = var5;
         this.z = var6;
      }

      class="kw">public int getOffsetX() {
         class="kw">return this.ox;
      }

      class="kw">public int getOffsetY() {
         class="kw">return this.oy;
      }

      class="kw">public int getOffsetZ() {
         class="kw">return this.oz;
      }

      class="kw">public DoubleUnaryOperator getX() {
         class="kw">return this.x;
      }

      class="kw">public DoubleUnaryOperator getY() {
         class="kw">return this.y;
      }

      class="kw">public DoubleUnaryOperator getZ() {
         class="kw">return this.z;
      }
   }
}