I'm starting to feel like an idiot for posting so many help threads. But there's not many places I can go to learn about 1.7's code.

 

Well, I've created a custom slab, and it works...Kinda.

 

Normally I'd be able to stack them up, and make them look like a full block. Instead, they do this. http://puu.sh/7pkr0.png

 

Here's the code for the slabs.

 

public class NegativeWoodSlabs extends BlockSlab {
public static final String[] field_150005_b = new String[] {"negative"};

public NegativeWoodSlabs(boolean p_i45437_1_)
    {
        super(p_i45437_1_, Material.wood);
    }

/**
     * Gets the block's texture. Args: side, meta
     */
    @SideOnly(Side.CLIENT)
    public IIcon getIcon(int p_149691_1_, int p_149691_2_)
    {
        return Mod1.NegativeOakPlanks.getIcon(p_149691_1_, p_149691_2_ & 7);
    }

    public Item getItemDropped(int p_149650_1_, Random p_149650_2_, int p_149650_3_)
    {
        return Item.getItemFromBlock(Mod1.NegativeOakSlab);
    }

    /**
     * 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 p_149644_1_)
    {
        return new ItemStack(Item.getItemFromBlock(Blocks.wooden_slab), 2, p_149644_1_ & 7);
    }

    public String func_150002_b(int p_150002_1_)
    {
        if (p_150002_1_ < 0 || p_150002_1_ >= field_150005_b.length)
        {
            p_150002_1_ = 0;
        }

        return super.getUnlocalizedName() + "." + field_150005_b[p_150002_1_];
    }
    
    @SideOnly(Side.CLIENT)
    public void getSubBlocks(Item p_149666_1_, CreativeTabs p_149666_2_, List p_149666_3_)
    {
        if (p_149666_1_ != Item.getItemFromBlock(Mod1.NegativeOakDoubleSlab))
        {
            for (int i = 0; i < field_150005_b.length; ++i)
            {
                p_149666_3_.add(new ItemStack(p_149666_1_, 1, i));
            }
        }
    }

    @SideOnly(Side.CLIENT)
    public void registerBlockIcons(IIconRegister p_149651_1_) {}
}

 

And the code for registering the slabs.

 

NegativeOakSlab = new NegativeWoodSlabs(false).setHardness(2.0F).setResistance(5.0F).setCreativeTab(tabNegative).setBlockName("NegativeOakSlab");
NegativeOakDoubleSlab = new NegativeWoodSlabs(true).setHardness(2.0F).setResistance(5.0F).setCreativeTab(tabNegative).setBlockName("NegativeOakDoubleSlab");

 

Not sure what I'm doing wrong, everything looks fine, it's similar to vanilla's code, so I don't see the problem...

Sorry if bumping is against some rule or anything. But I had to. >_>

 

Le Bump.

protected ItemStack createStackedBlock(int p_149644_1_)

    {

        return new ItemStack(Item.getItemFromBlock(Blocks.wooden_slab), 2, p_149644_1_ & 7);

    }

I'd say Blocks.wooden_slab isn't the one you'd want.

...Huh. I didn't even notice I sent that mistake in the code. Cause that's already fixed, and it still doesn't work. ._.

 

I'll just...repost the code...in case there are more mistakes I've already fixed from then and now.

 

public class NegativeWoodSlabs extends BlockSlab
{
    public static final String[] field_150005_b = new String[] {"negative"};
    private static final String __OBFID = "CL_00000337";

    public NegativeWoodSlabs(boolean p_i45437_1_)
    {
        super(p_i45437_1_, Material.wood);
        this.setCreativeTab(Mod1.tabNegative);
    }

    /**
     * Gets the block's texture. Args: side, meta
     */
    @SideOnly(Side.CLIENT)
    public IIcon getIcon(int p_149691_1_, int p_149691_2_)
    {
        return Mod1.NegativeOakPlanks.getIcon(p_149691_1_, p_149691_2_ & 7);
    }

    public Item getItemDropped(int p_149650_1_, Random p_149650_2_, int p_149650_3_)
    {
        return Item.getItemFromBlock(Mod1.NegativeOakSlab);
    }

    /**
     * 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 p_149644_1_)
    {
        return new ItemStack(Item.getItemFromBlock(Mod1.NegativeOakSlab), 2, p_149644_1_ & 7);
    }

    public String func_150002_b(int p_150002_1_)
    {
        if (p_150002_1_ < 0 || p_150002_1_ >= field_150005_b.length)
        {
            p_150002_1_ = 0;
        }

        return super.getUnlocalizedName() + "." + field_150005_b[p_150002_1_];
    }

    /**
     * returns a list of blocks with the same ID, but different meta (eg: wood returns 4 blocks)
     */
    @SideOnly(Side.CLIENT)
    public void getSubBlocks(Item p_149666_1_, CreativeTabs p_149666_2_, List p_149666_3_)
    {
        if (p_149666_1_ != Item.getItemFromBlock(Mod1.NegativeOakSlabDouble))
        {
            for (int i = 0; i < field_150005_b.length; ++i)
            {
                p_149666_3_.add(new ItemStack(p_149666_1_, 1, i));
            }
        }
    }

    @SideOnly(Side.CLIENT)
    public void registerBlockIcons(IIconRegister p_149651_1_) {}
}

I don't see what is going on in the texture you posted, so i'll assume this is a rendering issue.

 

You should override "shouldSideBeRendered" method, there is hardcoded wooden slabs and stone slabs in BlockSlab.

._.

 

I just looked at the photo, and now I feel like an idiot.

 

This is what's going on.

 

http://puu.sh/7sc5L.png

 

The slab doesn't stack up like normal slabs, but instead gets placed .5 blocks higher than usual. As if the slab was a full block.

Oh, and there's also this glitch.

 

http://puu.sh/7ukA3.png

 

Vanilla slabs don't cast shadows on full blocks, while my custom slab does. Again, acting like a full block.

Just a guess (Not by any means an expert, or even know what I'm doing), but does adding the following help?

 

this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.5F, 1.0F);

Take a look at BlockSlab#func150003_a(Block) is private and specific to vanilla slabs. So, you have to override the two functions that call it in your class.

• boolean shouldSideBeRendered(IBlockAccess p_149646_1_, int p_149646_2_, int p_149646_3_, int p_149646_4_, int p_149646_5_)
  
• Item getItem(World p_149694_1_, int p_149694_2_, int p_149694_3_, int p_149694_4_)
  

Look at the code in BlockSlab and modify