Using previous GFs as dimensions

Yes I do something similar in DrussGT, in two places.

1. I use the enemy's current GF as a gun attribute to help with oscillators

2. I use my predicted GF one BFT in the future as in input to help against mirror bots (and it helps a little against most other bots as well)

I'm also curious about the last 5 GFs - are they sorted and fed to the gun in ascending order, or are they used in the order they were collected? I feel that some distance/clustering method other than KNN might work best in this situation.

I agree that something other than KNN might be better, but its what I have set up right now. No sorting happens, the gun just has a dimension for the last GF, a dimension for the GF before that, etc. I found increased performance dropping data decay, going to 10 past GFs, and using descending weights on older GFs. Data decay shouldn't be necessary with this setup as if the opponent changes their movement patterns, they will change their GF sequences.

Exiting anti flattener results! The gun gets pretty much the same hitrate vs DrussGT (which can't shoot) with DrussGTs flattener allowed to turn on or forced off. Around 10.6% weighted from DrussGT's console. For comparison, Diamond's gun gets around 12.6%. The interesting thing is that the hitrate didn't go down at all with the flattener.

by exactly how much per k

Why don't you test?