JazzJackrabbit Community Forums

JazzJackrabbit Community Forums http://www.jazz2online.com/jcf/ Forum for discussing Jazz Jackrabbit 2, its sequels and the online game community. Active since 2001! en Wed, 26 Aug 2026 12:21:24 GMT vBulletin 60 https://www.jazz2online.com/jcf/images/misc/rss.jpg JazzJackrabbit Community Forums http://www.jazz2online.com/jcf/ Bug Report 32-bit graphics are glitchy when used in gems for Coop/SP end of level screen http://www.jazz2online.com/jcf/showthread.php?t=20933&goto=newpost Sun, 23 Aug 2026 21:03:16 GMT Mayhem happens if you use jjCOLORMAP instead of jjPIXELMAP. For smaller graphics (totem.png) it shows the wrong image with artifacts, for larger graphics (spyromalfunction.png) it crashes with an access violation (EIP always 0x0047C7CF, but the address it reads from varies each time).
Minimal example:

Code:

void onLevelLoad() {

        jjCOLORMAP dummy("your_file_here.png");

        jjAnimSets[ANIM::PICKUPS].load();

        const uint animId = 35;

        jjANIMFRAME@ frame = jjAnimFrames[jjAnimations[jjAnimSets[ANIM::PICKUPS].firstAnim + animId].firstFrame]; // (ANIM::PICKUPS, animId, 0)

        dummy.save(frame);

}

Tested on JJ2+ 6.6g.

Attached Images

	glitch_ahoy.png (101.4 KB)
	crash_ahoy.png (23.3 KB)
	totem.png (1.9 KB)
	spyromalfunction.png (6.8 KB)

]]> JJ2+ Issue Tracker froducish http://www.jazz2online.com/jcf/showthread.php?t=20933 How do you prefer to race opponents? http://www.jazz2online.com/jcf/showthread.php?t=20932&goto=newpost Sun, 09 Aug 2026 22:53:22 GMT A specific follow-up to https://www.jazz2online.com/jcf/showthread.php?t=20834 that sadly didn't get any response. This is to poll for the next JDC season and race event.

Since 6.2 plus made several enhancements to race, it could be a viable replacement of the race mutator. But there's one big difference in how race works between the two:

-Since 6.2 in /gamemode race, injury is off and your bullets knock around racing opponents (same as vanilla behavior)
-In race.mut, injury is on, you have infinite health (same as every past JDC race event behavior, except you are also able to take springs while blinking, which wasn't the case when it was hosted in treasure hunt in the first years)

I made this poll to ask the community how you prefer racing.

EDIT: Forgot to change the title. Woops. It should say "How should racing oppponents work" ]]> JJ2+ Issue Tracker FawFul http://www.jazz2online.com/jcf/showthread.php?t=20932 Public Test Enable full screen (DirectDraw) http://www.jazz2online.com/jcf/showthread.php?t=20931&goto=newpost Sat, 08 Aug 2026 23:32:39 GMT Download here

The Problem:
Sometimes JJ2(+) doesn't allow you to use fullscreen. Alt+Enter does nothing and it doesn't appear in the video options menu.

We think this is because later versions of Windows disable some DirectDraw functionality unless the special code DWM8And16BitMitigation is in a certain area of the registry. (DirectDraw is the technology that JJ2, and programs in general, use for fullscreen--I'm using them as synonyms here.)

This experimental build adds DWM8And16BitMitigation to the registry when you run it.

Caveats:

The string is added to the registry the first time you run JJ2+. Therefore, it won't work the first time, DirectDraw will still be unavailable. It should only start being available the second time you run JJ2+, and then continue to be available every time thereafter.
This needs to be set in the registry for every different path to Jazz2.exe you have. So if you have multiple copies of JJ2+ installed in different folders, you'll need to do this for each folder.

How to test this:
Download this ZIP and extract the plus.dll file into your JJ2+ folder. You may make a backup of the original plus.dll first, if you want.

Try running JJ2 many times in a row, to make sure that the fix doesn't stop working at some point.
Try renaming the folder to see if the fix can catch up to the new name/s. (Again, it may only start working the second time you run JJ2+ in each different folder name.)
Try other things that we haven't thought of!

Next Steps
If we hear that this build successfully fixes the problem for affected players, we will release it as an update to JJ2+, so everyone gets the fix, not just people looking at this particular forum thread.

If not, we'll go back to researching the problem. :( ]]> JJ2+ Issue Tracker Violet CLM http://www.jazz2online.com/jcf/showthread.php?t=20931 Anyway i can play the game in its original 320x240 resolution? http://www.jazz2online.com/jcf/showthread.php?t=20930&goto=newpost Sat, 08 Aug 2026 17:34:07 GMT Id really like to get to experience jack in its original resolution is there a mod that will allow me to do that? ]]> JJ2+ Issue Tracker Mr.Fearingt00n http://www.jazz2online.com/jcf/showthread.php?t=20930 Jazz Jackrabbit 2+ in GOG screen settings http://www.jazz2online.com/jcf/showthread.php?t=20929&goto=newpost Fri, 07 Aug 2026 10:44:42 GMT I?m glad that GOG now has a separate entry for JJ2+ that includes the *Holiday Hare* episode and the correct level order. However, I?m having a problem. The game launched in full-screen mode once, but subsequently, it only opens in a window. The standard *Jazz Jackrabbit 2: Secret Files + JJ2+* always launches in full-screen mode.
What can I do to launch *Jazz Jackrabbit 2+* in full-screen mode?

Thank! ]]> General Jazz Jackrabbit Talk TurbaTurtle http://www.jazz2online.com/jcf/showthread.php?t=20929 <![CDATA[Feature Request Add "PG" indicator next to "OT" on F9 overlay]]> http://www.jazz2online.com/jcf/showthread.php?t=20928&goto=newpost Tue, 04 Aug 2026 09:04:53 GMT Hi. When pressing F9 twice, the game shows "OT: OFF" or "OT: ON" on the left side. Please add "PG: OFF" or "PG: ON" next to it in yellow color so we can see the pregame status too. Thanks. ]]> JJ2+ Issue Tracker Atila/Artin http://www.jazz2online.com/jcf/showthread.php?t=20928 Vote for the Next Feature Update http://www.jazz2online.com/jcf/showthread.php?t=20927&goto=newpost Tue, 04 Aug 2026 05:37:02 GMT Something cool is coming up on Thursday, and afterwards I hope to finish off the 6.6 series with 6.6h, which cares about music. But after that the timeline gets a bit vague. There are a number of feature branches which are nearly ready, and no real obvious order for how to release them. So I guess why not just ask what y'all would like to see next?

(I will not be elaborating beyond the names at this time.)

(This is not a legally binding poll, something might take more work than expected and that would make it get delayed.)

(Poll does not include bug fixes, those get scattered into other releases basically at random.) ]]> JJ2+ Issue Tracker Violet CLM http://www.jazz2online.com/jcf/showthread.php?t=20927 Bug Report Bird2 ground anims broken before moving http://www.jazz2online.com/jcf/showthread.php?t=20926&goto=newpost Mon, 03 Aug 2026 11:24:21 GMT When using jjmorph on the ground in SP or MP, the standing still animations of bird2 are played at an extremely slow speed until you start moving. ]]> JJ2+ Issue Tracker FawFul http://www.jazz2online.com/jcf/showthread.php?t=20926 JJT to JJTime http://www.jazz2online.com/jcf/showthread.php?t=20925&goto=newpost Mon, 03 Aug 2026 10:35:08 GMT The introduction of JJT has always been annoying, because it eliminates any scripted cheatcodes that starts with a T. For example, in HH24 we had to deviate from traditional difficulty cheats. Instead of JJTurbo it had to become JJNightmare, creating inconsisencies with how the game presents itself. Technically I don't think any script uses JJT currently, or JJTime, so this should be a good change imo. ]]> JJ2+ Issue Tracker FawFul http://www.jazz2online.com/jcf/showthread.php?t=20925 JDC 36 Logo Contest http://www.jazz2online.com/jcf/showthread.php?t=20924&goto=newpost Sat, 01 Aug 2026 15:50:15 GMT The new season is set to start in a week from now, and we need a new logo banner!

Contest rules:

Must be a JPG/PNG image.
Must be 960 pixels wide.
Must be between 130-250 pixels tall.
Must resemble Jazz 2, preferably the "online multiplayer" aspect of it.
Must include the text "JDC" and/or "Jazz Duelist's Challenge".
Try not to make it clash with our website color scheme. (We can edit the website but within reason.)
Give credit if you use other people's art.
No AI submissions.

Feel free to take a look at our past logos in this thread: https://www.jazz2online.com/jcf/showthread.php?t=20142

Go wild! ]]> General Jazz Jackrabbit Talk cooba http://www.jazz2online.com/jcf/showthread.php?t=20924 Moving TSF episode to the bottom? http://www.jazz2online.com/jcf/showthread.php?t=20923&goto=newpost Fri, 31 Jul 2026 05:47:19 GMT Current:
Attachment 175

Proposed:
Attachment 176

In 1999, when 1.24 came out, the TSF episode was a big deal! Nine huge new levels! Wow!

Nowadays, popular sentiment seems to be that the TSF episode just doesn't have the best official levels. Too much repetition, in particular. If you're a new player, you don't know that TSF is special, you just see that it's the top episode so you play it first, even though it's not as good and it has nothing to do with the story. TSF isn't an expansion pack anymore, it's just the default way that people encounter the game for the first time.

So what if we moved TSF down to where the other one-off official episodes are, Shareware Demo and HH98/CC99? Based on its position value inside secretf.j2e, instead of special code in Jazz2.exe that puts it at the top of the list and ignores its real position. Still playable (though beating it would return you to the main menu), but easier to skip over, and new players will start with Formerly a Prince as it does seem like they should.

This is not the most originalist argument--HH98, TSF, and CC99 all put their titular episodes at the top of the list--I'm just tired of this particular one.

Attached Images

	Jazz2--003.png (301.7 KB)
	Jazz2--002.png (309.4 KB)

]]> JJ2+ Issue Tracker Violet CLM http://www.jazz2online.com/jcf/showthread.php?t=20923