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Hello fellow community members. I've been playing Rimworld for a while now, but at this specific time I am working on a project for one of my classes. I'm trying to build an AI that will predict when events will happen and approximately what time they will happen at based on the colony's current status.

My question is: what exactly causes events to happen? I have a general idea that wealth, population, and storyteller difficulty affect the events, but I'm not 100% sure. I don't need the exact threshold that causes each event to happen (that's what the AI is going to figure out), I just need to know which variables contribute to the decision of which event to call upon.

If anybody knows more about this than me feel free to respond. And Tynan, if you're out there and happen to stumble upon this post, I would love a detailed explanation from you.

For those who are worried, I'm not planning to use this to cheat my way through the game (I enjoy the challenge of adapting to events as they happen). I also don't plan on publicly releasing this, at least not for a while, because it will be a very basic application without any GUI.

There's a new feature in Alpha 3, right? Raiders being able to land inside of your base. Cool, right? Wrong! (Okay, it's actually a really cool idea, but I'm running into issues that leave my defenses wide open).

I created a room by walling in two sides of a canyon sort of deal, which subsequently created a roof. I made a no roof zone above a small rectangle of growing zone, which is great for farming.


Here is what I am talking about, roofless area inside a room without a no roof zone.

BUT, now whenever the raiders drop into the middle of my base, they do it INSIDE of it, rather than just outside the main entrance. I would very much like to stop that... but when I try to remove the no roof zone, the roof doesn't come back. I'll even put supports all around that area to make sure a roof can go there, but it never comes. Even removing the door and re-adding it doesn't work (trying to make a new room).


And here is after I added some supports, tried adding the no roof zone and removing it again, and even removing the door and adding it again.

Might anybody have any idea on what exactly is causing this behavior and any idea on how to fix it?