Please change it so that the if(rand()%100==0) check is dependant on a variable that can be configured in the adventure config file. I've not seen a rogue spawner since I think version 7.2.2 (when I believe this change was made)

just tested with a count of 256, and ... well out of a gigantic cave system I had at least one spawner. So maybe if you could add a config option that would be great, because 256 is the hard cap on placed feature

All world gen can be configurable via datapack. This is a change mojang has made and modders had to adapt. I am not sure where you got your example from to see what it is doing. But yeah datapack is how you would modify the chances now.

The rogue spawner specifically does have a hardcoded 1/100 success chance in the feature code, though it can be kinda counteracted by increasing the count in the placed feature.

I could probably move the definition of the 100 to the feature config instead of it being hardcoded.

thanks shadows-of-fire, I'll check the datapack side for now until that's a feature config.

All world gen can be configurable via datapack. This is a change mojang has made and modders had to adapt. I am not sure where you got your example from to see what it is doing. But yeah datapack is how you would modify the chances now.

I looked at the source code while trying to figure out if I broke something.