001    package net.minecraft.world.gen;
002    
003    import java.util.Random;
004    import net.minecraft.world.World;
005    import net.minecraft.world.chunk.IChunkProvider;
006    
007    public class MapGenBase
008    {
009        /** The number of Chunks to gen-check in any given direction. */
010        protected int range = 8;
011    
012        /** The RNG used by the MapGen classes. */
013        protected Random rand = new Random();
014    
015        /** This world object. */
016        protected World worldObj;
017    
018        public void generate(IChunkProvider par1IChunkProvider, World par2World, int par3, int par4, byte[] par5ArrayOfByte)
019        {
020            int var6 = this.range;
021            this.worldObj = par2World;
022            this.rand.setSeed(par2World.getSeed());
023            long var7 = this.rand.nextLong();
024            long var9 = this.rand.nextLong();
025    
026            for (int var11 = par3 - var6; var11 <= par3 + var6; ++var11)
027            {
028                for (int var12 = par4 - var6; var12 <= par4 + var6; ++var12)
029                {
030                    long var13 = (long)var11 * var7;
031                    long var15 = (long)var12 * var9;
032                    this.rand.setSeed(var13 ^ var15 ^ par2World.getSeed());
033                    this.recursiveGenerate(par2World, var11, var12, par3, par4, par5ArrayOfByte);
034                }
035            }
036        }
037    
038        /**
039         * Recursively called by generate() (generate) and optionally by itself.
040         */
041        protected void recursiveGenerate(World par1World, int par2, int par3, int par4, int par5, byte[] par6ArrayOfByte) {}
042    }