package net.minecraft.world.gen.layer;

import net.minecraft.world.biome.BiomeGenBase;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class GenLayerHills extends GenLayer
{
    private static final Logger logger = LogManager.getLogger();
    private GenLayer field_151628_d;

    public GenLayerHills(long p_i45479_1_, GenLayer p_i45479_3_, GenLayer p_i45479_4_)
    {
        super(p_i45479_1_);
        this.parent = p_i45479_3_;
        this.field_151628_d = p_i45479_4_;
    }

    /**
     * Returns a list of integer values generated by this layer. These may be interpreted as temperatures, rainfall
     * amounts, or biomeList[] indices based on the particular GenLayer subclass.
     */
    public int[] getInts(int areaX, int areaY, int areaWidth, int areaHeight)
    {
        int[] var5 = this.parent.getInts(areaX - 1, areaY - 1, areaWidth + 2, areaHeight + 2);
        int[] var6 = this.field_151628_d.getInts(areaX - 1, areaY - 1, areaWidth + 2, areaHeight + 2);
        int[] var7 = IntCache.getIntCache(areaWidth * areaHeight);

        for (int var8 = 0; var8 < areaHeight; ++var8)
        {
            for (int var9 = 0; var9 < areaWidth; ++var9)
            {
                this.initChunkSeed((long)(var9 + areaX), (long)(var8 + areaY));
                int var10 = var5[var9 + 1 + (var8 + 1) * (areaWidth + 2)];
                int var11 = var6[var9 + 1 + (var8 + 1) * (areaWidth + 2)];
                boolean var12 = (var11 - 2) % 29 == 0;

                if (var10 > 255)
                {
                    logger.debug("old! " + var10);
                }

                if (var10 != 0 && var11 >= 2 && (var11 - 2) % 29 == 1 && var10 < 128)
                {
                    if (BiomeGenBase.getBiome(var10 + 128) != null)
                    {
                        var7[var9 + var8 * areaWidth] = var10 + 128;
                    }
                    else
                    {
                        var7[var9 + var8 * areaWidth] = var10;
                    }
                }
                else if (this.nextInt(3) != 0 && !var12)
                {
                    var7[var9 + var8 * areaWidth] = var10;
                }
                else
                {
                    int var13 = var10;
                    int var14;

                    if (var10 == BiomeGenBase.desert.biomeID)
                    {
                        var13 = BiomeGenBase.desertHills.biomeID;
                    }
                    else if (var10 == BiomeGenBase.forest.biomeID)
                    {
                        var13 = BiomeGenBase.forestHills.biomeID;
                    }
                    else if (var10 == BiomeGenBase.birchForest.biomeID)
                    {
                        var13 = BiomeGenBase.birchForestHills.biomeID;
                    }
                    else if (var10 == BiomeGenBase.roofedForest.biomeID)
                    {
                        var13 = BiomeGenBase.plains.biomeID;
                    }
                    else if (var10 == BiomeGenBase.taiga.biomeID)
                    {
                        var13 = BiomeGenBase.taigaHills.biomeID;
                    }
                    else if (var10 == BiomeGenBase.megaTaiga.biomeID)
                    {
                        var13 = BiomeGenBase.megaTaigaHills.biomeID;
                    }
                    else if (var10 == BiomeGenBase.coldTaiga.biomeID)
                    {
                        var13 = BiomeGenBase.coldTaigaHills.biomeID;
                    }
                    else if (var10 == BiomeGenBase.plains.biomeID)
                    {
                        if (this.nextInt(3) == 0)
                        {
                            var13 = BiomeGenBase.forestHills.biomeID;
                        }
                        else
                        {
                            var13 = BiomeGenBase.forest.biomeID;
                        }
                    }
                    else if (var10 == BiomeGenBase.icePlains.biomeID)
                    {
                        var13 = BiomeGenBase.iceMountains.biomeID;
                    }
                    else if (var10 == BiomeGenBase.jungle.biomeID)
                    {
                        var13 = BiomeGenBase.jungleHills.biomeID;
                    }
                    else if (var10 == BiomeGenBase.ocean.biomeID)
                    {
                        var13 = BiomeGenBase.deepOcean.biomeID;
                    }
                    else if (var10 == BiomeGenBase.extremeHills.biomeID)
                    {
                        var13 = BiomeGenBase.extremeHillsPlus.biomeID;
                    }
                    else if (var10 == BiomeGenBase.savanna.biomeID)
                    {
                        var13 = BiomeGenBase.savannaPlateau.biomeID;
                    }
                    else if (biomesEqualOrMesaPlateau(var10, BiomeGenBase.mesaPlateau_F.biomeID))
                    {
                        var13 = BiomeGenBase.mesa.biomeID;
                    }
                    else if (var10 == BiomeGenBase.deepOcean.biomeID && this.nextInt(3) == 0)
                    {
                        var14 = this.nextInt(2);

                        if (var14 == 0)
                        {
                            var13 = BiomeGenBase.plains.biomeID;
                        }
                        else
                        {
                            var13 = BiomeGenBase.forest.biomeID;
                        }
                    }

                    if (var12 && var13 != var10)
                    {
                        if (BiomeGenBase.getBiome(var13 + 128) != null)
                        {
                            var13 += 128;
                        }
                        else
                        {
                            var13 = var10;
                        }
                    }

                    if (var13 == var10)
                    {
                        var7[var9 + var8 * areaWidth] = var10;
                    }
                    else
                    {
                        var14 = var5[var9 + 1 + (var8 + 1 - 1) * (areaWidth + 2)];
                        int var15 = var5[var9 + 1 + 1 + (var8 + 1) * (areaWidth + 2)];
                        int var16 = var5[var9 + 1 - 1 + (var8 + 1) * (areaWidth + 2)];
                        int var17 = var5[var9 + 1 + (var8 + 1 + 1) * (areaWidth + 2)];
                        int var18 = 0;

                        if (biomesEqualOrMesaPlateau(var14, var10))
                        {
                            ++var18;
                        }

                        if (biomesEqualOrMesaPlateau(var15, var10))
                        {
                            ++var18;
                        }

                        if (biomesEqualOrMesaPlateau(var16, var10))
                        {
                            ++var18;
                        }

                        if (biomesEqualOrMesaPlateau(var17, var10))
                        {
                            ++var18;
                        }

                        if (var18 >= 3)
                        {
                            var7[var9 + var8 * areaWidth] = var13;
                        }
                        else
                        {
                            var7[var9 + var8 * areaWidth] = var10;
                        }
                    }
                }
            }
        }

        return var7;
    }
}
