Hi guys I'm making two new saplings and i want to make it like the vanilla saplings (Same id with different meta).

I have copy the BlockSapling class and change id to returns 2 blocks, but it not returns two different icons but only the icon of the first sapling for both the blocks. It's only the icon because if i place them the texture is correct.

 

Here is the BlockSaplingMod file:

package mod.mineworld.blocks.mod_plants;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

import java.util.List;
import java.util.Random;

import mod.mineworld.mod_tabs;
import net.minecraft.block.Block;
import net.minecraft.block.BlockBush;
import net.minecraft.block.IGrowable;
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;

public class BlockSaplings extends BlockBush implements IGrowable
{
    public static final String[] sapling_names = new String[] {"apple", "palm"};
    private static final IIcon[] icon = new IIcon[sapling_names.length];

    public BlockSaplings()
    {
        float f = 0.4F;
        this.setBlockBounds(0.5F - f, 0.0F, 0.5F - f, 0.5F + f, f * 2.0F, 0.5F + f);
        this.setCreativeTab(mod_tabs.tabPlantsDecorations);
    }

    /**
     * Ticks the block if it's been scheduled
     */
    public void updateTick(World par1, int par2, int par3, int par4, Random par5)
    {
        if (!par1.isRemote)
        {
            super.updateTick(par1, par2, par3, par4, par5);

            if (par1.getBlockLightValue(par2, par3 + 1, par4) >= 9 && par5.nextInt(7) == 0)
            {
                this.markOrGrowMarked(par1, par2, par3, par4, par5);
            }
        }
    }

    /**
     * Gets the block's texture. Args: side, meta
     */
    @SideOnly(Side.CLIENT)
    public IIcon getIcon(int par1, int par2)
    {
        par2 &= 7;
        return icon[MathHelper.clamp_int(par2, 0, 5)];
    }
    
    /**
     * Returns an item stack containing a single instance of the current block type. 'i' is the block's subtype/damage
     * and is ignored for blocks which do not support subtypes. Blocks which cannot be harvested should return null.
     */
    protected ItemStack createStackedBlock(int par1)
    {
        return new ItemStack(this, 1, par1 & 3);
    }
    
    public void markOrGrowMarked(World par1, int par2, int par3, int par4, Random par5)
    {
        int l = par1.getBlockMetadata(par2, par3, par4);

        if ((l &  == 0)
        {
            par1.setBlockMetadataWithNotify(par2, par3, par4, l | 8, 4);
        }
        else
        {
            this.growTree(par1, par2, par3, par4, par5);
        }
    }

    public void growTree(World par1, int par2, int par3, int par4, Random par5)
    {
        if (!net.minecraftforge.event.terraingen.TerrainGen.saplingGrowTree(par1, par5, par2, par3, par4)) return;
        int l = par1.getBlockMetadata(par2, par3, par4) & 7;
        Object object = par5.nextInt(10) == 0 ? new WorldGenBigTree(true) : new WorldGenTrees(true);
        int i1 = 0;
        int j1 = 0;
        boolean flag = false;

        switch (l)
        {
            case 0:
            default:
                break;
            case 1:
                label78:

                for (i1 = 0; i1 >= -1; --i1)
                {
                    for (j1 = 0; j1 >= -1; --j1)
                    {
                        if (this.isSameSapling(par1, par2 + i1, par3, par4 + j1, 1) && this.isSameSapling(par1, par2 + i1 + 1, par3, par4 + j1, 1) && this.isSameSapling(par1, par2 + i1, par3, par4 + j1 + 1, 1) && this.isSameSapling(par1, par2 + i1 + 1, par3, par4 + j1 + 1, 1))
                        {
                            object = new WorldGenMegaPineTree(false, par5.nextBoolean());
                            flag = true;
                            break label78;
                        }
                    }
                }

                if (!flag)
                {
                    j1 = 0;
                    i1 = 0;
                    object = new WorldGenTaiga2(true);
                }

                break;
            case 2:
                object = new WorldGenForest(true, false);
                break;
            case 3:
                label93:

                for (i1 = 0; i1 >= -1; --i1)
                {
                    for (j1 = 0; j1 >= -1; --j1)
                    {
                        if (this.isSameSapling(par1, par2 + i1, par3, par4 + j1, 3) && this.isSameSapling(par1, par2 + i1 + 1, par3, par4 + j1, 3) && this.isSameSapling(par1, par2 + i1, par3, par4 + j1 + 1, 3) && this.isSameSapling(par1, par2 + i1 + 1, par3, par4 + j1 + 1, 3))
                        {
                            object = new WorldGenMegaJungle(true, 10, 20, 3, 3);
                            flag = true;
                            break label93;
                        }
                    }
                }

                if (!flag)
                {
                    j1 = 0;
                    i1 = 0;
                    object = new WorldGenTrees(true, 4 + par5.nextInt(7), 3, 3, false);
                }

                break;
            case 4:
                object = new WorldGenSavannaTree(true);
                break;
            case 5:
                label108:

                for (i1 = 0; i1 >= -1; --i1)
                {
                    for (j1 = 0; j1 >= -1; --j1)
                    {
                        if (this.isSameSapling(par1, par2 + i1, par3, par4 + j1, 5) && this.isSameSapling(par1, par2 + i1 + 1, par3, par4 + j1, 5) && this.isSameSapling(par1, par2 + i1, par3, par4 + j1 + 1, 5) && this.isSameSapling(par1, par2 + i1 + 1, par3, par4 + j1 + 1, 5))
                        {
                            object = new WorldGenCanopyTree(true);
                            flag = true;
                            break label108;
                        }
                    }
                }

                if (!flag)
                {
                    return;
                }
        }

        Block block = Blocks.air;

        if (flag)
        {
            par1.setBlock(par2 + i1, par3, par4 + j1, block, 0, 4);
            par1.setBlock(par2 + i1 + 1, par3, par4 + j1, block, 0, 4);
            par1.setBlock(par2 + i1, par3, par4 + j1 + 1, block, 0, 4);
            par1.setBlock(par2 + i1 + 1, par3, par4 + j1 + 1, block, 0, 4);
        }
        else
        {
            par1.setBlock(par2, par3, par4, block, 0, 4);
        }

        if (!((WorldGenerator)object).generate(par1, par5, par2 + i1, par3, par4 + j1))
        {
            if (flag)
            {
                par1.setBlock(par2 + i1, par3, par4 + j1, this, l, 4);
                par1.setBlock(par2 + i1 + 1, par3, par4 + j1, this, l, 4);
                par1.setBlock(par2 + i1, par3, par4 + j1 + 1, this, l, 4);
                par1.setBlock(par2 + i1 + 1, par3, par4 + j1 + 1, this, l, 4);
            }
            else
            {
                par1.setBlock(par2, par3, par4, this, l, 4);
            }
        }
    }

    public boolean isSameSapling(World par1, int par2, int par3, int par4, int par5)
    {
        return par1.getBlock(par2, par3, par4) == this && (par1.getBlockMetadata(par2, par3, par4) & 7) == par5;
    }

    /**
     * Determines the damage on the item the block drops. Used in cloth and wood.
     */
    public int damageDropped(int par1)
    {
        return MathHelper.clamp_int(par1 & 7, 0, 5);
    }

    /**
     * returns a list of blocks with the same ID, but different meta (eg: wood returns 4 blocks)
     */
    @SideOnly(Side.CLIENT)
    public void getSubBlocks(Item par1, CreativeTabs par2, List par3)
    {
        par3.add(new ItemStack(par1, 1, 0));
        par3.add(new ItemStack(par1, 1, 1));
    }

    @SideOnly(Side.CLIENT)
    public void registerBlockIcons(IIconRegister par1)
    {
        for (int i = 0; i < icon.length; ++i)
        {
            icon[i] = par1.registerIcon(this.getTextureName() + "_" + sapling_names[i]);
        }
    }

    public boolean func_149851_a(World p_149851_1_, int p_149851_2_, int p_149851_3_, int p_149851_4_, boolean p_149851_5_)
    {
        return true;
    }

    public boolean func_149852_a(World par1, Random par2, int par3, int par4, int par5)
    {
        return (double)par1.rand.nextFloat() < 0.45D;
    }

    public void func_149853_b(World par1, Random par2, int par3, int par4, int par5)
    {
        this.markOrGrowMarked(par1, par3, par4, par5, par2);
    }
}

 

And here is a snapshot of the item Icons (wich is wrong):

and here a snapshot of the block texture when placed (wich is correct)

 

Thanks in advice for all who will help me

You need to register your block with a metadata sensitive version of ItemBlock.

When you use GameRegistry.registerBlock() for your sapling, use the version with the ItemBlock class parameter and use the ItemBlockWithMetadata class:

GameRegistry.registerBlock(myBlockInstance, ItemBlockWithMetadata.class, "myBlockRegisteredName");

Yes i have the ItemBlock file for the saplings and i already register it with

GameRegistry.registerBlock(saplings, ItemSaplings.class, "saplings");

but it doesn't work I'm pretty sure the problem is not the ItemSapling.class beacuse i also have two metadata woods wich hase the same ItemBlock class and it all works fine, so i don't know why it's not working with the saplings

This is the ItemSaplings class

package mod.mineworld.blocks.mod_plants;

import net.minecraft.block.Block;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemStack;

public class ItemSaplings extends ItemBlock {

private final static String[] subNames = {
	"apple", "palm"
};

public ItemSaplings(Block id) {
	super(id);
	setHasSubtypes(true);
}

@Override
public int getMetadata (int damageValue) {
	return damageValue;
}

@Override
public String getUnlocalizedName(ItemStack itemstack) {
	return getUnlocalizedName() + "." + subNames[itemstack.getItemDamage()];
}

}

[sOLVED]

I have the Solution!

 

in your ItemBlock file, change the extension to ItemBlockWithMetadata, and add and extra comma and "block" in super as seen below.

 

Here's my file, ItemEverySapling:

package net.davidjholland.everytrees;

import net.minecraft.block.Block;
import net.minecraft.item.ItemBlockWithMetadata;
import net.minecraft.item.ItemStack;

public class ItemEverySapling extends ItemBlockWithMetadata {

public ItemEverySapling(Block block) {
	super(block, block);
}

public String getUnlocalizedName(ItemStack itemStack){
	int i = itemStack.getItemDamage();
	if (i < 0 || i >= BlockEverySapling.field_149882_a.length){
		i = 0;
	}
	return super.getUnlocalizedName() + "." + BlockEverySapling.field_149882_a[i];
}

public int getMetadata(int meta){
	return meta;
}

}

 

You're Welcome