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➜ SMAUG
➜ SMAUG coding
➜ Adding a structure to the char_data structure
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Adding a structure to the char_data structure
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| Posted by
| Azrith
(15 posts) Bio
|
| Date
| Wed 12 Mar 2003 09:48 PM (UTC) |
| Message
| Hi! I have added a structure to the char_data structure and everything is compiling fine. However, when Im in the game and a function modifies a value in the new structure it seems to modify all of the character's structures. I believe I probably somehow have the structure tied to all characters but I am not sure how. I added the structure in mud.h and then the line to the struct char_data. Is every character pointing to the same structure? If so how can I get it so that each char has their own structure.
Thanks for the help!
Azrith | | Top |
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| Posted by
| Nick Gammon
Australia (23,162 posts) Bio
Forum Administrator |
| Date
| Reply #1 on Thu 13 Mar 2003 09:54 PM (UTC) |
| Message
| | There is one structure, however each character should have a pointer to their own copy of it. Can you post the lines where you modify this new attribute for a particular player, and where you test it? |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
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| Posted by
| Azrith
(15 posts) Bio
|
| Date
| Reply #2 on Fri 14 Mar 2003 07:43 PM (UTC) |
| Message
| I finally got it working :) Very strange I originaly setup a table like the race table. Each location the table held the value for a different vehicle. When the character purchase this vehicle I was trying to set their struct mentioned above = to this value. Well for some reason that line was messing things up. Instead of using 1 line I set up a CREATE . . . then the ch->newstruct Then I called a function that set the chars struct = to the vehicle in the proper location of table. That seemed to fix it. :) Thanks for the help though!
Azrith | | Top |
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| Posted by
| Nick Gammon
Australia (23,162 posts) Bio
Forum Administrator |
| Date
| Reply #3 on Fri 14 Mar 2003 09:34 PM (UTC) |
| Message
| The reason is you are dealing with pointers, and using "=" makes a copy of the pointer (ie. you have 2 pointers pointing to the same thing), it doesn't make a copy of the structure it is pointing to.
Using CREATE allocates memory for a second copy of the structure, which is what you want. |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
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| Posted by
| Azrith
(15 posts) Bio
|
| Date
| Reply #4 on Sat 15 Mar 2003 06:38 AM (UTC) |
| Message
| Ahh, Thanks! :) That makes some more since now.
I do have another question about a warning when compiling smaug. Its an original warning which Ill just post with a new subject. Thanks again!
| | Top |
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