Generic Sapling Block Code

package net.mod.adamDoesMods.Biomes.features;

import java.util.List;

import java.util.Random;

import net.minecraft.block.Block;
import net.minecraft.block.BlockSapling;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.init.Blocks;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.IIcon;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;
import net.minecraft.world.gen.feature.WorldGenBigTree;
import net.minecraft.world.gen.feature.WorldGenCanopyTree;
import net.minecraft.world.gen.feature.WorldGenForest;
import net.minecraft.world.gen.feature.WorldGenMegaJungle;
import net.minecraft.world.gen.feature.WorldGenMegaPineTree;
import net.minecraft.world.gen.feature.WorldGenSavannaTree;
import net.minecraft.world.gen.feature.WorldGenTaiga2;
import net.minecraft.world.gen.feature.WorldGenTrees;
import net.minecraft.world.gen.feature.WorldGenerator;
import net.mod.adamDoesMods.adamDoesMods;
import net.mod.adamDoesMods.Biomes.features.WorldGenAphockTree;

public class admSaplings extends BlockSapling {
    public static final String[] saplings = new String[] {"Aphock"};
    private static final IIcon[] icons = new IIcon[saplings.length];

    public admSaplings() {
         float var1 = 0.4F;
         this.setBlockBounds(0.5F - var1, 0.0F, 0.5F - var1, 0.5F + var1, var1 * 2.0F, 0.5F + var1);
         this.setCreativeTab(CreativeTabs.tabDecorations);
    }

    public void updateTick(World world, int x, int y, int z, Random random)
    {
        if (!world.isRemote)
        {
            super.updateTick(world, x, y, z, random);

            if (world.getBlockLightValue(x, y + 1, z) >= 9 && random.nextInt(7) == 0)
            {
                this.func_149879_c(world, x, y, z, random);
            }
        }
    }

    public IIcon getIcon(int side, int meta)
    {
        meta &= 7;
        return icons[MathHelper.clamp_int(meta, 0, 5)];
    }

    //markOrGrowMarked
    public void func_149879_c(World world, int x, int y, int z, Random random)
    {
        int i = world.getBlockMetadata(x, y, z);

        if ((i & 8) == 0)
        {
            world.setBlockMetadataWithNotify(x, y, z, i | 8, 4);
        }
        else
        {
            this.func_149878_d(world, x, y, z, random);
        }
    }

    //growTree
    @Override
    public void func_149878_d(World world, int x, int y, int z, Random random)
    {
        if(!net.minecraftforge.event.terraingen.TerrainGen.saplingGrowTree(world, random, x, y, z)) return;



        int var6 = world.getBlockMetadata(x, y, z) & 7;
        Object object = random.nextInt(10) == 0 ? new WorldGenBigTree(true) : new WorldGenTrees(true);
        int var8 = 0;
        int var9 = 0;
        boolean var10 = false;

        switch (var6)
        {
            case 0:
                break;

            case 1:
               object = new WorldGenAphockTree(adamDoesMods.logs, adamDoesMods.leaves, 0, 0, false, 9, 15, false);

                break;


            case 3:
               break;

            case 4:

                break;

            case 5:

               break;

            default:
                break;

        }


        Block var11 = Blocks.air;

        if (var10)
        {
            world.setBlock(x + var8, y, z + var9, var11, 0, 4);
            world.setBlock(x + var8 + 1, y, z + var9, var11, 0, 4);
            world.setBlock(x + var8, y, z + var9 + 1, var11, 0, 4);
            world.setBlock(x + var8 + 1, y, z + var9 + 1, var11, 0, 4);
        }
        else
        {
            world.setBlock(x, y, z, var11, 0, 4);
        }

        if (!((WorldGenerator)object).generate(world, random, x + var8, y, z + var9))
        {
            if (var10)
            {
                world.setBlock(x + var8, y, z + var9, this, var6, 4);
                world.setBlock(x + var8 + 1, y, z + var9, this, var6, 4);
                world.setBlock(x + var8, y, z + var9 + 1, this, var6, 4);
                world.setBlock(x + var8 + 1, y, z + var9 + 1, this, var6, 4);
            }
            else
            {
                world.setBlock(x, y, z, this, var6, 4);
            }
        }
    }
    //isSameSapling
    public boolean func_149880_a(World world, int w, int x, int y, int z)
    {
        return world.getBlock(w, x, y) == this && (world.getBlockMetadata(w, x, y) & 7) == z;
    }


    public int damageDropped(int x)
    {
        return MathHelper.clamp_int(x & 7, 0, 5);
    }

    public void getSubBlocks(Item item, CreativeTabs tabs, List list) {
        for(int i = 0; i < saplings.length; i++) {
            list.add(new ItemStack(item, 1, i));
        }
    }

    public void registerBlockIcons(IIconRegister register)
    {
        for (int i = 0; i < icons.length; i++)
        {
            icons[i] = register.registerIcon("adamdoesmods" + ":" +"sapling" + saplings[i]);
        }
    }

    public boolean func_149851_a(World world, int x, int y, int z, boolean myBoolean)
    {
        return true;
    }

    public boolean func_149852_a(World world, Random random, int x, int y, int z)
    {
        return (double)world.rand.nextFloat() < 0.45D;
    }

    public void func_149853_b(World world, Random random, int x, int y, int z)
    {
        this.func_149879_c(world, x, y, z, random);
    }