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

class="kw">import javax.annotation.Nonnull;

class="kw">public class="kw">final class SphereSpiralIterator {
   @Nonnull
   class="kw">private class="kw">final SphereOffsets shared;
   class="kw">private class="kw">volatile int playerRsq;
   class="kw">private int centerX;
   class="kw">private int centerY;
   class="kw">private int centerZ;
   class="kw">private int cursor;
   class="kw">private int startCursor;
   class="kw">private int endCursor;
   class="kw">private int startDistSqAtInit;
   class="kw">private int endDistSqAtInit;
   @Nonnull
   class="kw">private class="kw">final SpherePosition position = new SpherePosition();

   class="kw">public SphereSpiralIterator(@Nonnull SphereOffsets var1) {
      this.shared = var1;
   }

   class="kw">public void configure(int var1) {
      if (var1 < 0) {
         throw new IllegalArgumentException("radius must be non-negative: R=" + var1);
      }

      if (var1 > this.shared.maxR) {
         throw new IllegalArgumentException("player radius " + var1 + " exceeds shared max " + this.shared.maxR);
      }

      this.playerRsq = var1 * var1;
   }

   class="kw">public void init(int var1, int var2, int var3) {
      this.init(var1, var2, var3, 0, Integer.MAX_VALUE);
   }

   class="kw">public void init(int var1, int var2, int var3, int var4, int var5) {
      this.centerX = var1;
      this.centerY = var2;
      this.centerZ = var3;
      int var6 = Math.min(var5, this.playerRsq);
      this.startDistSqAtInit = var4;
      this.endDistSqAtInit = var6;
      this.cursor = lowerBound(this.shared.distSq, var4);
      this.startCursor = this.cursor;
      this.endCursor = upperBound(this.shared.distSq, var6);
   }

   class="kw">public boolean containsOffset(int var1, int var2, int var3) {
      class="kw">return var1 * var1 + var2 * var2 + var3 * var3 <= this.playerRsq;
   }

   class="kw">public boolean advance() {
      if (this.cursor >= this.endCursor) {
         class="kw">return false;
      }

      int var1 = this.cursor;
      this.position.x = this.centerX + this.shared.dx[var1];
      this.position.y = this.centerY + this.shared.dy[var1];
      this.position.z = this.centerZ + this.shared.dz[var1];
      this.position.distSq = this.shared.distSq[var1];
      this.cursor = var1 + 1;
      class="kw">return true;
   }

   @Nonnull
   class="kw">public SpherePosition position() {
      class="kw">return this.position;
   }

   class="kw">public int getCompletedDistSq() {
      if (this.cursor >= this.endCursor) {
         class="kw">return this.endDistSqAtInit;
      }

      if (this.cursor == this.startCursor) {
         class="kw">return this.startDistSqAtInit - 1;
      }

      int var1 = this.shared.distSq[this.cursor - 1];
      int var2 = this.shared.distSq[this.cursor];
      class="kw">return var2 > var1 ? var1 : var1 - 1;
   }

   @Nonnull
   class="kw">public SphereOffsets sharedOffsets() {
      class="kw">return this.shared;
   }

   class="kw">private class="kw">static int lowerBound(int[] var0, int var1) {
      int var2 = 0;
      int var3 = var0.length;

      while (var2 < var3) {
         int var4 = var2 + var3 >>> 1;
         if (var0[var4] < var1) {
            var2 = var4 + 1;
         } else {
            var3 = var4;
         }
      }

      class="kw">return var2;
   }

   class="kw">private class="kw">static int upperBound(int[] var0, int var1) {
      int var2 = 0;
      int var3 = var0.length;

      while (var2 < var3) {
         int var4 = var2 + var3 >>> 1;
         if (var0[var4] <= var1) {
            var2 = var4 + 1;
         } else {
            var3 = var4;
         }
      }

      class="kw">return var2;
   }
}