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➜ MUDs
➜ MUD Design Concepts
➜ Questions about starting a new MUD codebase from scratch using Lua...
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Questions about starting a new MUD codebase from scratch using Lua...
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| Posted by
| David Haley
USA (3,881 posts) Bio
|
| Date
| Reply #30 on Sat 06 Sep 2008 03:41 AM (UTC) |
| Message
| You are of course correct -- I'm not sure why I said pointers earlier, since I store everything as IDs anyhow using your ID management table...
Nonetheless I still don't see why you would often need a persistent ID, i.e. one that lasts across reboots. Even in the case of the inventory plugin you mentioned, you only need it for one session. |
David Haley aka Ksilyan
Head Programmer,
Legends of the Darkstone
http://david.the-haleys.org | | Top |
|
| Posted by
| Nick Gammon
Australia (23,133 posts) Bio
Forum Administrator |
| Date
| Reply #31 on Sat 06 Sep 2008 04:01 AM (UTC) |
| Message
| | The MUD might reboot, but the client still have inventory items cached in its memory. It would throw things out if they now referred to different things. This might especially happen on a hot boot, but I'm not sure. |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
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| Posted by
| David Haley
USA (3,881 posts) Bio
|
| Date
| Reply #32 on Sat 06 Sep 2008 04:16 AM (UTC) |
| Message
| | Hmm, yes, a hot boot could cause trouble, I think, because the client doesn't really know it happened. But for a full reboot, shouldn't the client dump its cached data when it gets disconnected? |
David Haley aka Ksilyan
Head Programmer,
Legends of the Darkstone
http://david.the-haleys.org | | Top |
|
| Posted by
| Quixadhal
(4 posts) Bio
|
| Date
| Reply #33 on Sat 06 Sep 2008 08:59 AM (UTC) |
| Message
| I guess it depends on how you handle reboots. Since I intend to store everything (prototypes AND instances) in SQL, there's no reason not to restore everything on reboot except player objects (and even those if it's a hot boot).
You need some kind of unique identifier to store things in SQL anyways, and integers are the easiest to index and use for junction tables.
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| Posted by
| David Haley
USA (3,881 posts) Bio
|
| Date
| Reply #34 on Sat 06 Sep 2008 03:53 PM (UTC) |
| Message
| | Yes, I suppose that if you've already got everything in an SQL table, everything is already indexed for you so you might as well take advantage of it. I'm still not convinced it's worthwhile if you need to build the indexing yourself, though. |
David Haley aka Ksilyan
Head Programmer,
Legends of the Darkstone
http://david.the-haleys.org | | Top |
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| Posted by
| Quixadhal
(4 posts) Bio
|
| Date
| Reply #35 on Sat 06 Sep 2008 11:48 PM (UTC) |
| Message
| Yeah, if you're not using a database for storage, or you're just not saving instances, you probably don't need persistent ID's because just knowing that you have a "red cloth bag", and that it has 3 "sweet onions" and a "note from Farmer Ted" is enough to recreate them from prototypes.
I think ID's are useful for things which have internal state, because it provides a concise way to tie state information to usage within the game. If my sword gets damaged and I sell it to a vendor, you *could* have the vendor destroy it and only sell new swords... but you could also have him re-sell your used sword at a discount.
If, for example, that sword happened to have been a murder weapon, you'd only need to store the ID as pending case data. If your ID goes away at reboot time, you have to store the player/NPC who has it and all the stats about it too.
| | Top |
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| Posted by
| David Haley
USA (3,881 posts) Bio
|
| Date
| Reply #36 on Sun 07 Sep 2008 12:32 AM (UTC) Amended on Sun 07 Sep 2008 07:34 AM (UTC) by Nick Gammon
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| Message
| | Oh, just to be clear, I think there are indeed several cases where a persistent ID is useful. What I don't think is necessary is giving everything an ID if you don't have to. |
David Haley aka Ksilyan
Head Programmer,
Legends of the Darkstone
http://david.the-haleys.org | | Top |
|
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