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➜ SMAUG
➜ SMAUG coding
➜ SET_BIT and xSET_BIT
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| Posted by
| Typhon
USA (112 posts) Bio
|
| Date
| Sun 29 Feb 2004 10:03 AM (UTC) Amended on Sun 29 Feb 2004 10:04 AM (UTC) by Typhon
|
| Message
| i dont really fully grasp the whole bit thing.. but..
i was curious as to whether or not oset can be changed to use xSET_BIT when adding affects to items.
oset item affect affected <flag>
well after the 32nd flag it wraps around and ive got something like 46 flags :( so i cant add anything past..
aqua_breath and thats a stock flag :\
tanks
-typ | | Top |
|
| Posted by
| Greven
Canada (835 posts) Bio
|
| Date
| Reply #1 on Sun 29 Feb 2004 07:08 PM (UTC) |
| Message
| | Check this, this will explain it: http://www.auricmud.com/snippets/bitvectors.html. So yeah, you can have more than 32, up to a whatever you choose to make it. |
Nobody ever expects the spanish inquisition!
darkwarriors.net:4848
http://darkwarriors.net | | Top |
|
| Posted by
| Typhon
USA (112 posts) Bio
|
| Date
| Reply #2 on Sun 29 Feb 2004 11:23 PM (UTC) |
| Message
| | lol ok i get the bitvectors and xbit vectors.. but how bout SET_BIT andxSET_BIT.. whats the difference between those and is there an easy way to change objects or would i have to rewrite everything that has to do with objects(save/load/oset)? | | Top |
|
| Posted by
| Nick Gammon
Australia (23,173 posts) Bio
Forum Administrator |
| Date
| Reply #3 on Mon 01 Mar 2004 07:47 PM (UTC) |
| Message
| SET_BIT is designed for a single int (32 bits) whereas xSET_BIT is designed for an extended bitvector which is a structure of 4 ints, see here:
/*
* Defines for extended bitvectors
*/
#ifndef INTBITS
#define INTBITS 32
#endif
#define XBM 31 /* extended bitmask ( INTBITS - 1 ) */
#define RSV 5 /* right-shift value ( sqrt(XBM+1) ) */
#define XBI 4 /* integers in an extended bitvector */
#define MAX_BITS XBI * INTBITS
/*
* Structure for extended bitvectors -- Thoric
*/
struct extended_bitvector
{
int bits[XBI];
};
Trying to use xSET_BIT for a normal int or SET_BIT on an extended vector will just give heaps of errors, and not work.
You would need to change the thing you want to use more bits on, to extended_bitvector, then change all the places which set, or get, those bits, plus change the way it is read/written to the area files. |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
|
| Posted by
| Typhon
USA (112 posts) Bio
|
| Date
| Reply #4 on Tue 02 Mar 2004 09:44 PM (UTC) |
| Message
| | ugh sounds like to much work :\ | | Top |
|
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