I started this game a bit more than a month ago. I found the tutorial very helpful and that got me started with the basics. The biggest problem i had was that i can not code object oriented but only procedural. That's not how i am used to programming. Furthermore navigating through the files is very difficult and i still can't get the files/folders set up in a way that i find clear.

I also miss being able to step through code when debugging. At the start console logs are good enough, but now i have a few rooms it's hard to get debug logging for the small bits that go wrong.

As for gameplay, I still don't understand pathing. The creeps very often do not what i expect when moving to other rooms. My move to other room code does it in 4 different ways one after the other until the creep stays in the room i want it to (-: This seems to work, so i'll keep it like this for now.

I had a lot of fun getting to understand the source keeper rooms. I still see a lot of room for improvement in what i have now, but it works good enough.

The simultanius actions was a bit unintuitive at the start, but there is a good article about how it works, that helped a lot.

I had a sort of the same problem, where a creep kept going back and forth on a border. In the room the creep wanted to be in the path it found went back out to the room the creep came from, and in the room it came from it got the ERR_NO_PATH. I'm pretty sure this was caused by swamp on the border between where the creep entered the room it wanted to be in and where i wanted it to go to in that room.

I fixed it by building roads on the swamp. I didn't really understand why i got the ERR_NO_PATH error, so i could not think of a way to fix it in code, probably because i am still pretty new to Screeps and don't really understand how moving to other rooms goes. I assumed it was not a bug and me not understanding how pathfinding works (-: