I am currently creating a fallout-themed modpack. It is, as I see it, a mix between a typical stranded/skyblock type of modpack but with a vast custom world with buildings, cities and towns to explore and loot. Also, none of that damn ex nihilio. The start and mid-game revolves a lot around creating your base and exploring the world to find resources and what not. Anyways, I was also thinking about implementing a dungeon system - you know, the type you'd find in, say, World of Warcraft. You first need to find the dungeon entrace, where you will find a portal which leads into the dungeon itself. Simple stuff. I've got all that figured out. However, when players are in dungeons, I wish they couldn't break blocks. I know stuff like flying and what not can't really be restricted, but is there a way to possibly prevent players from breaking and, if possible, placing blocks at all? Thanks in advance.