L2JMobius

L2ClientDat figuring out .dat structures

Copyleft · 6 · 2593

Offline Copyleft

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Greetings, dear friends

I'm working on one of the more recent L2 clients and there's some .dat files that refuse to open with the most recent of L2ClientDat releases

I've looked into the sources and basically every file has its own defined structure. But how was this structure figured out?

I'd like to know how to research, how to find out the structure of the .dat file, so that I can implement them in L2ClientDat and open the files

How do you do it?

Thank you!
Best regards


Offline SavitarGodOfSpeed

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Recently i Run into this issue as well

Structure is not found in the directory: Path Of Rogue - High Elves file: SkillName_ClassicAden-eu.dat

So on both Free/Sub Project installation is reccomended to use JDK21 Which is correct

However L2Client Dat needs the old JDK17 to run 100%

Here is the link to download the bellsoft 17 version: https://bell-sw.com/pages/downloads/#jdk-17-lts

Hope it helps


Offline lokiru

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there's some .dat files that refuse to open with the most recent of L2ClientDat releases

seems current L2ClientDat dont have actual structure for 474 protocol yet


Online Mobius

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seems current L2ClientDat dont have actual structure for 474 protocol yet
Seems like you use a leaked version and come here to ask for support.


Offline lokiru

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Seems like you use a leaked version and come here to ask for support.

leaked version? im trying to read ItemName.dat file from current official client :)


Online Mobius

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leaked version? im trying to read ItemName.dat file from current official client :)
Sure you do...
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