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Title

PCNT - Persistent Containers

Author

Knat

Submitted / Updated

06-16-2003 / 11-22-2006

Category

Database Related

Expansions

Works on all versions

View Code

--- exploit fix ----

action-spam exploit which works like this:

PC moves some meters away from the chest and starts left-clicking it in a rapid manner while the PC starts to move towards it. After the arrival, his action queue will spam the chest:

OnUse/OnOpen/OnClose fire in a very rapid manner and the chest will get "stuck open" most of the time, not firing OnClose/OnOpen anymore.

this will not only spork many scripts, it will also render this chest unusable. this can lead to bad stuff.

i worked heavily on a fix and got something ready. it's not a clever one, it's a brute force one. but it works 100% of the time.

one small hassle:
your chest/placeable needs to be present on the palette. 
you have to create it beforehand with all scripts and stuff, then dropping it to your map.
it won't work if you modified your chest after you dropped it to the map.


changelog:

v 1.1

  - added dynamic watchdog to scan for "Stuck Open" chests (applied to pcnt_open)
  - added various exploit fixes (applied to pcnt_open, pcnt_close)
  - fixed two bugs (thanks for benton for the headsup):
     1. DestroyInventory() did not delete cache
     2. forgot to use correct database name in case cache was deactivated

v 1.0 (first final)

  - added a floating text message "Please walk away to close container" while the player
    opens a persistent container.

  - fixed container "lock" mechanism. it should now correctly stop other players
    from opening an already busy container.

v 0.6

  - charged items get now handled properly thanks to GetItemCharges/SetItemCharges

  - increased item stack size to 5. you can now store any amount of gold.
    one small restriction: you can't move more then 50000 gold at once. but you
    can store any number of gold stacks. this takes container capacity into account.
    e.g. container with max capacity of 10 can hold 500.000 gold (10 stacks of 50.000)

  - added blocking
    block specifc items by item type or tag filter via PINV_BlockItemByType(),PINV_BlockItemByFilter()
    see PINV_open for usage example

  - added auto caching.
    container will only update to database if the inventory got manipulated.
    reading cache will only read the inventory one time at first usage of PINV_RetrieveInventory().
    storing of additional items will not issue a new read, just a single db write + readcache update.
    this is much faster now...

  - added hashing
    IDs now get hashed. no more limits on area TAG length while using unique IDs
    this also grants additional security.

  - secure delimiter added
    IDs that contain a secure delimiter character will get rejected
    this should prevent any form of hijacking

  - container now retains his sorting order through the use of LIFO (last in first out)
    for inventory creation/storing.

  - a closed chest is ALWAYS completely empty. this preserves lots of RAM on large modules

FAQ (under construction)

When do i use TAG IDs ? (ReflexSafe = 0)
 if you have a moving container (like a creature) OR if you want
 to share the same inventory between different containers.

When do i use unique IDs ? (ReflexSafe = 1)
 use this kind of ID if your container is stationary. you won't
 have any tag dependency this way.

When do i use player IDs ? (ReflexSafe = 2)
 use this kind of ID if you want a player vault.
 a container with this setting will retrieve inventory based
 on the using player. this is the classical PC vault thingy...

Select All Text | View Code in separate window

Format

Module and Code

Type

Type - Item Storage

Includes

BioWare Standard

Description

PCNT - Persistent Container Scripts by Knat

update to 1.1, fixed even more exploits and some bugs

this code got developed during the database beta time...

features:

does only need one database call to read or write a complete inventory.
easy to customize and flexible
you can specify a container capacity limit just by changing the WillSafe property of your placeable
you can specify how a container gets indexed by changing the ReflexSafe property:
optional caching included (greatly reduces database usage to a minimum)
you can block items based on TAG or base item type
works with every itemtype now
advanced anti-exploit mechanisms
multiplayer compatible
uses a hashed index to overcome the 32 char limit of sVarName
modular code, easy to expand or change...

see readme.txt and script headers for more info. check pcnt.mod for a quick demonstration

Files

Name	Type	Size	Downloads
pcnt.zippcnt.zip Submitted: 06-16-2003 / Last Updated: 06-27-2003	zip	28.59Kb	2347
--

SCORE OUT OF 10

8.95
12 votes
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Comments (38):

1 2 Next>

Posted by Daijin at 2011-10-20 15:06:04 Voted 10.00 on 10/20/11

Casting my vote of 10 again!!!
_________________________
Dream Well, Faith, Loyalty, Truth, Honor, Friendship always.....

Daijin Dreamweaver, Leader of the Dream Warriors for 32 years, going strong.

Nwn The Dunjon Shard:
Link

Posted by Doomie22 ( 213.106.xxx.xxx ) at 2006-04-04 06:47:18

Excellent system, one question. Can it be converted into using the mysql database? Is it just a simple case of changing the SetLocal to SetPersistent? (I know I need to add the aps scripts)

Doomie

Posted by OmegaDM at 2005-09-16 15:42:56 Voted 9.00 on 09/16/05

system is pretty straight forward, but instruction on its use and implementation could use more detail
_________________________
Omega Forge on the vault

Posted by DuncanZahn at 2005-04-06 23:29:13 Voted 10.00 on 04/06/05

Very well done!

Posted by MoradinSoulForger ( 67.161.xxx.xxx ) at 2004-12-04 10:58:00

I'm not sure how Will Save can be manipulated to increase or decrease capacity....what am I missing? Is this an actual saving throw against characters Will stat?

Posted by MoradinSoulForger ( 67.161.xxx.xxx ) at 2004-12-04 10:57:00

I'm not sure how Will Save can be manipulated to increase or decrease capacity....what am I missing? Is this an actual saving throw against characters Will stat?

Posted by caesarbear at 2004-09-23 14:05:59 Voted 4.00 on 09/23/04

A nice idea, but it does not work with most custom items.

Posted by Tichondrius at 2004-09-20 07:04:12 Voted 9.50 on 09/20/04

Actually one of the best persistent containers on the Wault. I give it 9.5/10 bcs they cannot hold the dynamic item properties. Nevertheless if you use this set of scripts, youll definitly love it. ;)

Posted by Deleverator at 2004-08-27 14:58:59 Voted 10.00 on 08/27/04

Posted by Ondaderthad at 2004-08-14 19:07:33 Voted 9.00 on 08/14/04

Simple, efficient and very easy to use.
_________________________
The Best PW system is getting even better.
PLATEMAIL Tech Preview

Posted by Nazrohn at 2004-08-11 16:56:00 Voted 10.00 on 08/11/04

Posted by Dreamwarder at 2004-06-22 04:37:00

This is an excellent set of scripts and I would recommend them to anyone. I've only noticed one issue:

If an item that you put in a persistent container has a dynamic item property attached to it, then it will have lost that item property when you remove the item from the container after server reset. It would be great to see an update that addresses permanent dynamic item properties, but these scripts are top-notch regardless.

Posted by Silverti at 2004-06-12 20:50:28 Voted 5.00 on 06/12/04

I used this sytem for some time and finally took it out. I had to do a lot of modifications to get it to work and in the end it was plagued by lost items, cheaters and all kinds of problems since HOU was released. It really did turn into a large problem on Adventure Island. I ended up going with a new system posted here in ign that works great. Sorry KNAT, I like your other code.

_________________________
Creater / Designer / Host
Adventure Island 1: NWN
Adventure Island 2: NWN2

Link

Posted by Urlryn at 2004-03-22 23:57:00

Ok I have no idea why this isn't working.

I import the erf
Create the Chest
I Edit the properties and set the scripts:
--- assign pcnt_open to the OnOpen event
--- assign pcnt_close to the OnClose event

Willsafe and Reflexsafe....are those supposed to be Reflex Save and Will Save?

If so I set Reflex to 2
Will what is the max? I could find nothing showing what the limits are supposed to be for this option.

Place the chest on the map....save

Load up and login with character or DM and nobody can open the chest.

Posted by Bane_Moonglum at 2004-03-22 23:23:07 Voted 10.00 on 03/22/04

Very nice - been using this for awhile!!

Posted by Artimes ( ..xxx.xxx ) at 2004-03-21 19:01:00

Great Script! I might have missed it in the documentation but figured out that the one of the saving values was the maximum storage.

Great Work!

Posted by MorganQuickthrust at 2004-03-15 16:05:22 Voted 8.00 on 03/15/04

Posted by MorganQuickthrust at 2004-02-26 12:02:00 Voted 8.00 on 03/15/04

If you want housing, Donnmathan, check out Knats housing system also. It rocks! ;)

Interesting point on using Pack Animals, Fatgato! This could be very useful in creating true Pack Animals and Trade Caravans if we can setup a system that integrates it properly. Knat, do you see PCNT as possibly being able to accomplish this? Obviously it might need somemodifications, I'm just curious if you think it's possible. You know the code better then any of us. You mention that PCNT can be used on creatures too. I'd love to be able to create real trade caravans that actually carry stuff that can be waylaid by Bandits and what not. heh heh...

Also, the download here still seems to be pointing to 1.0 and not 1.1. ;)

Posted by Donnmathan ( ..xxx.xxx ) at 2004-02-26 10:20:00

Quick question - when you are saying that will save is used to limit the amount the chest can hold, are we talking weight, number of items, what? Otherwise...excellent work! Was wanting to add housing with persistant (secure) storage to my PW, and it seems to be exactly what I needed.

Posted by fatgato at 2004-02-24 19:36:00

I ahve some pack mules and other pack animals on my server I was curious if there was a way to make them be vaults? But the only problem is this if they get killed can you make it so the items fall on the ground? I am not sure if its possible but woudl be interesting.

Posted by MorganQuickthrust at 2004-02-22 09:28:00 Voted 8.00 on 03/15/04

Knat, it doesn't appear that the upload for this worked. The previous version is still the one that get's downloaded. Just wanted you to know. I'll post at The Fold about this too in case you don't check here that often. Heh heh... ;)

Posted by Daijin at 2004-02-22 01:04:00 Voted 10.00 on 10/20/11

Hmm, the downloaded file says 6-28-03?Dream Warriors Leader of 24 years, Faith, Loyalty, Honor, Truth and Friendship always.......
_________________________
Dream Well, Faith, Loyalty, Truth, Honor, Friendship always.....

Daijin Dreamweaver, Leader of the Dream Warriors for 32 years, going strong.

Nwn The Dunjon Shard:
Link

Posted by Old_Scores_Transfered at 2004-02-20 10:29:25 Voted 9.00 on 02/20/04

This is a compilation of the old system into a single score. There were 8 that made this score of 8.50 then rounded to 9.

Posted by _Knat ( ..xxx.xxx ) at 2004-02-08 05:42:00

i will soon release a major update to this script, which fixes a few dupe/exploit problems and some other quirks..

stay tuned...

Posted by Silverti at 2004-01-29 20:07:00 Voted 5.00 on 06/12/04

Well, I have been using this for a long time and now the bugs are really comming out. Right now, if I open a chest, anotehr player will click on it and get the "locked" status. So while he is keeping it open, I can then pick it and get into his stuff (actually it dup's).

_________________________
Creater / Designer / Host
Adventure Island 1: NWN
Adventure Island 2: NWN2

Link

Posted by mynzai ( ..xxx.xxx ) at 2003-09-17 19:11:00

Yeah, some of my items do not get stored. Looks like 'custom' ones. Not sure if they have a resref, but if it's custom it won't be in .2da, is that right?

Is there anyway to get it to work with requiring resref strings? Such as storing the object? I know it's 'less' efficient, but i'd rather have it working.

Any thoughts? otherwise great work Knat!
m

Posted by Knat ( ..xxx.xxx ) at 2003-08-04 04:11:00

@Vain:

yes, works fine with custom items

@howdie:

items without a resref get rejected for obvious reasons (i convert items into strings and a resref is a critical part of those item informations i need. storing them as strings is a lot more efficient compared to storing them as complete objects).

but you should not have a problem with items aquired after version 1.30 because bioware fixed most/all of the blank-resref problems.

gold HAS a resref and gets stored properly (it_gold if i remember properly)..

Posted by Vain ( ..xxx.xxx ) at 2003-07-29 11:01:00

Hmmm... is this supposed to work with custom items?

Posted by HOWDIE ( ..xxx.xxx ) at 2003-07-13 08:01:00

edit: *** WITHOUT a resref WONT be stored

Posted by Howdie ( ..xxx.xxx ) at 2003-07-13 07:23:00

i think you should warn people that items with a module res ref wont be stored .. eg GOLD :(

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