001package net.minecraft.world.gen.feature;
002
003import java.util.Random;
004import net.minecraft.block.Block;
005import net.minecraft.block.material.Material;
006import net.minecraft.world.World;
007
008public class WorldGenSand extends WorldGenerator
009{
010    /** Stores ID for WorldGenSand */
011    private int sandID;
012
013    /** The maximum radius used when generating a patch of blocks. */
014    private int radius;
015
016    public WorldGenSand(int par1, int par2)
017    {
018        this.sandID = par2;
019        this.radius = par1;
020    }
021
022    public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
023    {
024        if (par1World.getBlockMaterial(par3, par4, par5) != Material.water)
025        {
026            return false;
027        }
028        else
029        {
030            int l = par2Random.nextInt(this.radius - 2) + 2;
031            byte b0 = 2;
032
033            for (int i1 = par3 - l; i1 <= par3 + l; ++i1)
034            {
035                for (int j1 = par5 - l; j1 <= par5 + l; ++j1)
036                {
037                    int k1 = i1 - par3;
038                    int l1 = j1 - par5;
039
040                    if (k1 * k1 + l1 * l1 <= l * l)
041                    {
042                        for (int i2 = par4 - b0; i2 <= par4 + b0; ++i2)
043                        {
044                            int j2 = par1World.getBlockId(i1, i2, j1);
045
046                            if (j2 == Block.dirt.blockID || j2 == Block.grass.blockID)
047                            {
048                                par1World.setBlockAndMetadataWithNotify(i1, i2, j1, this.sandID, 0, 2);
049                            }
050                        }
051                    }
052                }
053            }
054
055            return true;
056        }
057    }
058}