Unused monster bit flags?

[Hajo]

I'm still working with the old Angband 2.9.3 codebase, and saw that some of the monster bit flags seem to be unused (in defines.h)

#define RF2_STUPID			0x00000001	/* Monster is stupid */
#define RF2_SMART			0x00000002	/* Monster is smart */
#define RF2_XXX1			0x00000004	/* (?) */
#define RF2_XXX2			0x00000008	/* (?) */

Are these really unused, or is it just unknown if those are used (e.g. potentially hardcoded somewhere)? I'd like to use some of them for a few new features that I want to test.

[zaimoni]

While one should always verify (grep the source code for them), generally the _XXX flags aren't used meaningfully.

[Hajo]

Ok, thanks.

Maybe I'll introduce a 7th bitfield for my own flags. I see that the other fields are thematically sorted, and the flags in question would fit to the first field, which is already used up fully though.