So I'm tracing some issues I have placing a block that has Meta-data.

I'm using this library for reference: forgeSrc-1.11.2-13.20.0.2262.jar. For the sake of this post I updated to the most recent MDK just before posting.

 

The problem seem to originate in the referenced library net.minecraft.item.ItemBlock.class in function onItemUse().

Spoiler

public EnumActionResult onItemUse(EntityPlayer player, World worldIn, BlockPos pos, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ)
    {
        IBlockState iblockstate = worldIn.getBlockState(pos);
        Block block = iblockstate.getBlock();

        if (!block.isReplaceable(worldIn, pos))
        {
            pos = pos.offset(facing);
        }

        ItemStack itemstack = player.getHeldItem(hand);

        if (!itemstack.isEmpty() && player.canPlayerEdit(pos, facing, itemstack) && worldIn.mayPlace(this.block, pos, false, facing, (Entity)null))
        {
            int i = this.getMetadata(itemstack.getMetadata());
            IBlockState iblockstate1 = this.block.getStateForPlacement(worldIn, pos, facing, hitX, hitY, hitZ, i, player, hand);

            if (placeBlockAt(itemstack, player, worldIn, pos, facing, hitX, hitY, hitZ, iblockstate1))
            {
                SoundType soundtype = worldIn.getBlockState(pos).getBlock().getSoundType(worldIn.getBlockState(pos), worldIn, pos, player);
                worldIn.playSound(player, pos, soundtype.getPlaceSound(), SoundCategory.BLOCKS, (soundtype.getVolume() + 1.0F) / 2.0F, soundtype.getPitch() * 0.8F);
                itemstack.shrink(1);
            }

            return EnumActionResult.SUCCESS;
        }
        else
        {
            return EnumActionResult.FAIL;
        }
    }

 

As you see the function does

 

 ItemStack itemstack = player.getHeldItem(hand);

 

and then 

 

 int i = this.getMetadata(itemstack.getMetadata());

 

The problem here is that this.getMetadata() has two different calltypes (net.minecraft.item.item.class)

Spoiler

public int getMetadata(int damage)
    {
        return 0;
    }

 

// (...) AND

 

public int getMetadata(ItemStack stack)
    {
        return stack.itemDamage;
    }

 

 

Now, seeing as

 itemstack.getMetadata()

returns the actual meta-data of the item as an int, the code

 int i = this.getMetadata(itemstack.getMetadata());

will ALWAYS return 0 as it calls

 public int getMetadata(int damage).

 

This causes the problem I have that whenever I have one of my added blocks with meta-data as an item, and right-click to place it as a block, the placed block is always default (0) meta-variant.

 

If this was intentional behaviour it seems strange to call itemstack.getMetadata() in the first place. It feels like the variable decleration should be int i = itemstack.getMetadata(); or possibly public int getMetadata(int damage) { return damage; }.

 

Does anyone have any information on something I might be doing wrong here? I Am fairly new to modding in minecraft so I might just be missing something.

Edited April 1, 20178 yr by CovexLy

Aaah okay that makes sense. Thanks for such quick response!