    001    package net.minecraft.world.gen.feature;
    002
    003    import java.util.Random;
    004    import net.minecraft.block.Block;
    005    import net.minecraft.entity.item.EntityEnderCrystal;
    006    import net.minecraft.world.World;
    007
    008    public class WorldGenSpikes extends WorldGenerator
    009    {
    010        /**
    011         * The Block ID that the generator is allowed to replace while generating the terrain.
    012         */
    013        private int replaceID;
    014
    015        public WorldGenSpikes(int par1)
    016        {
    017            this.replaceID = par1;
    018        }
    019
    020        public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
    021        {
    022            if (par1World.isAirBlock(par3, par4, par5) && par1World.getBlockId(par3, par4 - 1, par5) == this.replaceID)
    023            {
    024                int var6 = par2Random.nextInt(32) + 6;
    025                int var7 = par2Random.nextInt(4) + 1;
    026                int var8;
    027                int var9;
    028                int var10;
    029                int var11;
    030
    031                for (var8 = par3 - var7; var8 <= par3 + var7; ++var8)
    032                {
    033                    for (var9 = par5 - var7; var9 <= par5 + var7; ++var9)
    034                    {
    035                        var10 = var8 - par3;
    036                        var11 = var9 - par5;
    037
    038                        if (var10 * var10 + var11 * var11 <= var7 * var7 + 1 && par1World.getBlockId(var8, par4 - 1, var9) != this.replaceID)
    039                        {
    040                            return false;
    041                        }
    042                    }
    043                }
    044
    045                for (var8 = par4; var8 < par4 + var6 && var8 < 128; ++var8)
    046                {
    047                    for (var9 = par3 - var7; var9 <= par3 + var7; ++var9)
    048                    {
    049                        for (var10 = par5 - var7; var10 <= par5 + var7; ++var10)
    050                        {
    051                            var11 = var9 - par3;
    052                            int var12 = var10 - par5;
    053
    054                            if (var11 * var11 + var12 * var12 <= var7 * var7 + 1)
    055                            {
    056                                par1World.setBlockWithNotify(var9, var8, var10, Block.obsidian.blockID);
    057                            }
    058                        }
    059                    }
    060                }
    061
    062                EntityEnderCrystal var13 = new EntityEnderCrystal(par1World);
    063                var13.setLocationAndAngles((double)((float)par3 + 0.5F), (double)(par4 + var6), (double)((float)par5 + 0.5F), par2Random.nextFloat() * 360.0F, 0.0F);
    064                par1World.spawnEntityInWorld(var13);
    065                par1World.setBlockWithNotify(par3, par4 + var6, par5, Block.bedrock.blockID);
    066                return true;
    067            }
    068            else
    069            {
    070                return false;
    071            }
    072        }
    073    }