So I have been thinking I've done everything right. I'm on forge by the way.

structure block. done.

nbt file. also done.

structures.

structure.

structure_pool.

structure_set

all of it is done correctly so far.

Game is able to place it and also generate naturally.

I found it by /locate command.

BUT my structure isn't generating. like. it says it is placed and there but there is nothing, nothing at all.

what is the possible reasons for this? Its my first time trying to do a custom structure. is there anything that I'm missing?

45 minutes ago, Yazzarally said:

Alright, I took a look at the code... again. I assume that you are using 1.20.1, as from your last post. First, let's get the "Have you tried putting it in rice?" questions out of the way first. Have you looked from world height to bedrock? Notice anything strange in that range? Did you set the bounds of your structure properly? Have you checked multiple different locations? Did you pray before you ran your mod? Alright, now assuming that you did all of that, try this! Pray really hard, and open your log file. CONTROL+F search for the following string: "Failed Start with id". Hopefully your praying payed off and manifested this message into reality, because if not, this could be real rough. In the case that you do not see this message, the problem could be literally almost anything without any code to reference. There is a significant amount of things that could go wrong when generating structures, and it's all up to how you programmed the Structure Pieces class and your Structure class. If none of this works, please post your code here.

My previous post paragraph completely ignored the main bulk of the things you said in your post. Now I'll take it into account here. I notice that you said this one scary word: "structure block." Are you trying to use the datapack method to generate custom structures? If you are, I'm not exactly sure if this is the place for that kind of help, as I believe the people here are more experienced with PROGRAMMING WITH JAVA IN FORGE rather than operating general Minecraft datapacks. Perhaps somebody here will be more familiar with the datapack method of generating structures, but I'm not too sure. If you are trying to use the datapack method (which if you have forge and enough comfortability with java, then I would strongly recommend just making a mod instead), there is probably a more general Minecraft forum somewhere to ask in. If you are feeling up to it, you can actually very easily make a custom structure with this very old MCEdit method I remember from way back. I'm not sure if it could still work with 1.20.1, but it's worth a shot. Basically, you would just build a structure in a custom world, load that world in MCEdit, and use MCEdit to convert it into java code. I remember somebody made a program to "compress" the code that was generated from MCEdit, but I wasn't able to find the program. Sorry man.

Anyways, if you are stickin' with the datapack rotue, then I'm sorry, but I don't have enough experience to help you with that, but I wish you the best of luck!

Edited 3 hours ago3 hr by Jackson Perr
Oops, little typo.