Re: Adding Mob Action Bitvectors

From: Wout Mertens (
Date: 04/05/96

> Here are some possible remedies.  You may decide that the cure is worse 
> than the disease, and I'd agree with you, for some of these.
> 3. Make a second variable to hold the additional flags.  This requires
>    hand-changing much of the code to use the correct variable automagically.

How about making the flags just the bit position, eg 0, 1, 2, 3 etc
And then:

#define eIS_SET(bitarray, pos) (((pos)<32? bitarray[0] : bitarray[1]) & \
or even (for a LOT of flags)
#define eIS_SET(bitarray, pos) (bitarray[pos/32] & 1<<pos)

Where bitarray is the necessary number of ints, of course.
The second one might even be faster, considering that a SHL AX, 5 isn't 
too costly... go with that one :) (Hope that your compiler is smart enough
to know that '/32' == '>> 5', else just put pos>>5 aah what the hell I'm 

#define eSET(bitarray, pos) (bitarray[(pos)/32] |= 1<<(pos))
#define eTOGGLE(...) (... ^= ...)


#define MOB_FLAGGED(ch, flag) (IS_NPC(ch) && eIS_SET(MOB_FLAGS(ch), (flag))

And MOB_FLAGS is of course a bitarray.

Remember to change the bitvectorprinters and asciiflagsthingy etc because 
they don't use the macro's of course.
or be bold and convert ALL bitflags to that format, so there's no problem

> Next step: how to identify these.  Best suggestion I've heard so far is 
> to use a special character, such as a ^.  So the following line:
> abcdef^gh
> is really interpreted as:
> a | b | c | d | e | f | (z + g) | h
> (z is in the second set of characters).

weeeell, since z is 26 that's not a good idea :)
Why not just continue: a-zA-Z that gives 52 flags... And THEN you can use ^

Just my 2 cents...


This archive was generated by hypermail 2b30 : 12/18/00 PST