Island Gen Code

public boolean genIsland(World world, int radius, int xIn, int yIn, int zIn)
    {
        FloatingRuins.baseDepth = Math.max(2, Math.min(50, FloatingRuins.baseDepth));
        FloatingRuins.depthVariation = Math.max(0, Math.min(50, FloatingRuins.depthVariation));
        int specialOre = getSpecialOre();
        Random random = new Random();
        float depthRatio = random.nextInt(5) == 0 ? random.nextFloat() * 0.5F + 2.0F : random.nextFloat() * 0.2F + 0.4F;
        int height = (int)Math.ceil((float)radius * depthRatio);
        int yg = CommonUtils.getLowestGroundBlock(world, xIn, yIn - height, zIn);
        for(int x = -radius; x <= radius; x++)
            for(int y = 15; y >= -height; y--)
                for(int z = -radius; z <= radius; z++)
                {
                    float dist = Math.round(Math.sqrt(Math.pow(x, 2D) + Math.pow(z, 2D) + (y > 0 ? 0.0D : Math.pow((float)y / depthRatio, 2D))));
                    int block = world.getBlockId(x + xIn, yg + y, z + zIn);
                    if(dist <= (float)radius)
                    {
                        int metadata = world.getBlockMetadata(x + xIn, yg + y, z + zIn);
                        if((y <= 0) || (block != Block.waterStill.blockID && block != Block.waterMoving.blockID
                                && (world.isBlockNormalCube(x + xIn, yg + y, z + zIn) || block == Block.leaves.blockID)
                                && !CommonUtils.isItemInList(block, metadata, FloatingRuins.blockIDBlacklist)))
                        {
                            world.setBlockAndMetadata(x + xIn, y + yIn, z + zIn, block, metadata);
                            world.setBlockWithNotify(x + xIn, yg + y, z + zIn, 0);
                        }
                    }
                    if(random.nextInt(3) == 0 && world.getBlockId(x + xIn, y + yIn, z + zIn) == Block.stone.blockID && Math.abs(x) <= 1 && Math.abs(z) <= 1 &&
                            Math.abs(y + height / 2) <= 2)
                        world.setBlock(x + xIn, y + yIn, z + zIn, specialOre);
                }

        if(depthRatio < 1.0F)
            for(int x = -radius; x <= radius; x++)
                for(int y = 5; y >= -height; y--)
                    for(int z = -radius; z <= radius; z++)
                    {
                        int block = world.getBlockId(x + xIn, y + yIn, z + zIn);
                        if(block != 0 && world.isAirBlock(x + xIn, (y + yIn) - 1, z + zIn))
                            if(block == Block.gravel.blockID)
                                world.setBlock(x + xIn, y + yIn, z + zIn, Block.stone.blockID);
                            else if(block == Block.sand.blockID)
                                world.setBlock(x + xIn, y + yIn, z + zIn, Block.sandStone.blockID);
                    }

        return true;
    }