Hi, I made a custom scaffolding block and a corresponding item class that you can have a look at here:

https://github.com/Yamahari/ILikeWood/blob/master/src/main/java/yamahari/ilikewood/blocks/WoodenScaffoldingBlock.java

https://github.com/Yamahari/ILikeWood/blob/master/src/main/java/yamahari/ilikewood/items/WoodenScaffoldingItem.java

 

My issue is the following: https://imgur.com/jdwOKtN

Basically when I try to place a scaffolding block that is not of the same wood type as the block I aimed at, the autostacking feature doesn't work. I tracked it down to the following issue: When I use the "appropiate" scaffolding the "getBlockItemUseContext" method of my custom item is called with a BlockItemUseContext that has the position of the scaffolding block I aimed at. But if I use another wood type the function gets called with a context that contains the block that is one block off in the direction of the face I was aiming at, e.g. in the video that's an air block. This causes my "instanceof" checks in the "getBlockItemUseContext" method to fail. But I can't figure out why it's not passing the scaffolding block position in the context when it's a different wood type. Does BlockItem somehow change the logic of chosing the forwarded block position depending on whether or not the used item corresponds to the block that was registered to the BlockItem? 

Edited June 24, 20196 yr by Yamahari

https://github.com/Yamahari/ILikeWood/blob/master/src/main/java/yamahari/ilikewood/items/WoodenScaffoldingItem.java#L28

 

Oh geezus effing christ. If you're going to copy-paste vanilla code at least refactor all of the local variables so the code is fucking legible.

Normally I wait until mapping catch up, but I want help so I updated the names as far as I could without intentionally changing the meaning ( I hope )  

I think the problem is here:

https://github.com/Yamahari/ILikeWood/blob/master/src/main/java/yamahari/ilikewood/items/WoodenScaffoldingItem.java#L57-L59

That call invokes:

https://github.com/Yamahari/ILikeWood/blob/master/src/main/java/yamahari/ilikewood/blocks/WoodenScaffoldingBlock.java#L84-L86

Different wood types have different items.

Omg this actually fixed it, thanks! ( You have no idea how hard I tried to fix this, I think I lost 50% of my hair  )

@Override
    public boolean isReplaceable(BlockState blockStateIn, BlockItemUseContext blockItemUseContextIn) {
        //return blockItemUseContextIn.getItem().getItem() == this.asItem();
        for(Block block : Constants.SCAFFOLDINGS) {
            if(blockItemUseContextIn.getItem().getItem() == Item.getItemFromBlock(block)) return true;
        }
        return false;
    }

My question now is, why did this fix this, I don't get it

I already explained why. The item instances are different.