content: package net.minecraft.world.gen.layer;
  
  public class GenLayerAddIsland extends GenLayer {
      public GenLayerAddIsland(long p_i2119_1_, GenLayer p_i2119_3_) {
          super(p_i2119_1_);
          this.parent = p_i2119_3_;
      }
  
      public int[] getInts(int areaX, int areaY, int areaWidth, int areaHeight) {
          int i = areaX - 1;
          int j = areaY - 1;
          int k = areaWidth + 2;
          int l = areaHeight + 2;
          int[] aint = this.parent.getInts(i, j, k, l);
          int[] aint1 = IntCache.getIntCache(areaWidth * areaHeight);
  
          for (int i1 = 0; i1 < areaHeight; ++i1) {
              for (int j1 = 0; j1 < areaWidth; ++j1) {
                  int k1 = aint[j1 + (i1) * k];
                  int l1 = aint[j1 + 2 + (i1) * k];
                  int i2 = aint[j1 + (i1 + 2) * k];
                  int j2 = aint[j1 + 2 + (i1 + 2) * k];
                  int k2 = aint[j1 + 1 + (i1 + 1) * k];
                  this.initChunkSeed(j1 + areaX, i1 + areaY);
  
                  if (k2 != 0 || k1 == 0 && l1 == 0 && i2 == 0 && j2 == 0) {
                      if (k2 > 0 && (k1 == 0 || l1 == 0 || i2 == 0 || j2 == 0)) {
                          if (this.nextInt(5) == 0) {
                              if (k2 == 4) {
                                  aint1[j1 + i1 * areaWidth] = 4;
                              } else {
                                  aint1[j1 + i1 * areaWidth] = 0;
                              }
                          } else {
                              aint1[j1 + i1 * areaWidth] = k2;
                          }
                      } else {
                          aint1[j1 + i1 * areaWidth] = k2;
                      }
                  } else {
                      int l2 = 1;
                      int i3 = 1;
  
                      if (k1 != 0 && this.nextInt(l2++) == 0) {
                          i3 = k1;
                      }
  
                      if (l1 != 0 && this.nextInt(l2++) == 0) {
                          i3 = l1;
                      }
  
                      if (i2 != 0 && this.nextInt(l2++) == 0) {
                          i3 = i2;
                      }
  
                      if (j2 != 0 && this.nextInt(l2++) == 0) {
                          i3 = j2;
                      }
  
                      if (this.nextInt(3) == 0) {
                          aint1[j1 + i1 * areaWidth] = i3;
                      } else if (i3 == 4) {
                          aint1[j1 + i1 * areaWidth] = 4;
                      } else {
                          aint1[j1 + i1 * areaWidth] = 0;
                      }
                  }
              }
          }
  
          return aint1;
      }
  }
  