// if u want, else just use int to iterate
enum _state {controls, settings, something};

bool[] array = new bool[3];  // all false on init
// array[2] = true;  // eg
    /* (...) */

bool invert(enum case) {return !array[case]; }
// or
void invert(enum case) {array[case] = !array[case]; return; }


//eg if u want to switch bool controls which is now true, just call:

invert(_state.controls);