001package net.minecraft.world.gen.layer;
002
003public class GenLayerSmooth extends GenLayer
004{
005    public GenLayerSmooth(long par1, GenLayer par3GenLayer)
006    {
007        super(par1);
008        super.parent = par3GenLayer;
009    }
010
011    /**
012     * Returns a list of integer values generated by this layer. These may be interpreted as temperatures, rainfall
013     * amounts, or biomeList[] indices based on the particular GenLayer subclass.
014     */
015    public int[] getInts(int par1, int par2, int par3, int par4)
016    {
017        int i1 = par1 - 1;
018        int j1 = par2 - 1;
019        int k1 = par3 + 2;
020        int l1 = par4 + 2;
021        int[] aint = this.parent.getInts(i1, j1, k1, l1);
022        int[] aint1 = IntCache.getIntCache(par3 * par4);
023
024        for (int i2 = 0; i2 < par4; ++i2)
025        {
026            for (int j2 = 0; j2 < par3; ++j2)
027            {
028                int k2 = aint[j2 + 0 + (i2 + 1) * k1];
029                int l2 = aint[j2 + 2 + (i2 + 1) * k1];
030                int i3 = aint[j2 + 1 + (i2 + 0) * k1];
031                int j3 = aint[j2 + 1 + (i2 + 2) * k1];
032                int k3 = aint[j2 + 1 + (i2 + 1) * k1];
033
034                if (k2 == l2 && i3 == j3)
035                {
036                    this.initChunkSeed((long)(j2 + par1), (long)(i2 + par2));
037
038                    if (this.nextInt(2) == 0)
039                    {
040                        k3 = k2;
041                    }
042                    else
043                    {
044                        k3 = i3;
045                    }
046                }
047                else
048                {
049                    if (k2 == l2)
050                    {
051                        k3 = k2;
052                    }
053
054                    if (i3 == j3)
055                    {
056                        k3 = i3;
057                    }
058                }
059
060                aint1[j2 + i2 * par3] = k3;
061            }
062        }
063
064        return aint1;
065    }
066}