Where are the basic battle mechanics located in the default scripts?

[Porcelain]

I want to remove Luck's effect on state accuracy and set the preemptive chance to 0, but I can't find the formulas or values for these in any of the default scripts. I've tried opening them all and searching for Luck, preemptive, etc., but nothing came up.

 

[Kaliya]

Its a bit all over the place, but what you are looking for is in the Game_Action section somewhere, in rpg_objects.js  

 

[Porcelain]

Thank you.