DeleD Community Edition

Il Buzzo

Hi All,
I've recently started to use Irrlicht as 3D renderer so I've realised today a DMF loader for Irrlicht, so you're able to load directly your dmf files into Irrlicht.
Here you are some screenshots:

Loaded a simple scene, geometry works 100%.

Loaded scene with lightmaps, I'm fixing some issues.
First of all you're obliged to save a lightmap for each face (for now), and then you need to vertically mirror lightmaps generated, owing to different axis configuration.
I think that I'll fix tomorrow lightmap mirroring,and after the use of all kind of lightmap.
This opens new ways for my plugins (have you ever thought of a real time level viewer
with physics engine just like Newton in example).
Anyway , anyone interested please mail me, or wait for a final beta release.
Bye Wink

Paul-Jan · Posted: Fri Mar 04, 2005 8:04 am Post subject:

Hi Il Buzzo,

Great work! I have Irrlicht parked on my harddisk because I wanted to develop something similar, but you have beat me to it (cool). A level preview plugin would be great, but we are also very much interested in an easy-to-follow working example of 'how do I load my dmf into irrlicht'. Might help convincing Irrlicht users to use DeleD Razz

Keep up the great work man!
- Paul-Jan -

Chris · Member Joined: 08 Aug 2004 Posts: 161 Location: UK

Wah hey, Il Buzzo you've saved me a job. I intend to start playing around with Irrlicht and moving away from DB (once Khris lets me). And I intended to write my own dmf loader for Irrlicht, you've save both my time and hair.

I'll wait for the beta though, well for the moment as I'm in no real rush.

condrula · Member Joined: 07 Oct 2004 Posts: 62 Location: Rome, Italy

Finally, you save me! I was studing the nehe's tutorial on lightmapping for doing this in Irrlicht but Im too noob for this things

-------
visto che sei italiano posso esprimermi come mi viene meglio?
Hai intenzione di rilasciare una classe con codice sorgente per il lighmapping oppure rilascerai qualcos'altro? Io proprio non sono capace, comunque Ã¨ solo un hobby, se mi puoi aiutare te ne sarei grato

translation: HELP ME!!!

Paul-Jan · Posted: Fri Mar 04, 2005 1:21 pm Post subject:

Oh, an Buzzo, good news: as of version 1.1 of DeleD, the vertical flipping of the lightmaps (and other textures) won't be necessary anymore. That was a DeleD quirck we just kicked out.

Il Buzzo · Posted: Fri Mar 04, 2005 3:37 pm Post subject:

Hi guys,
I've actually fixed lightmapping with one texture (My loader will mirror automatically texture in Irrlicht). But there are still troubles with more than one lightmap file (there aren't with a lightmap for each texture. Any Ideas?!!).
So I think I'll wait DeleD 1.1 to definitively release a finished loader, but in the meanwhile, I'll try to solve these little troubles and I'll write a little tutorial.
By the way to load a DeleD file with the loader you'll need only to use these commands:

Daaark · Posted: Fri Mar 04, 2005 10:56 pm Post subject:

Are you using fstream to do the dmf parsing?

And did you have any problems using Irrilicht with DevC++? Smile

I donwloaded the 0.8 release, but haven't done anythng with it...

condrula · Member Joined: 07 Oct 2004 Posts: 62 Location: Rome, Italy

Hi Buzzo,
I tried some little lightmapping in this way
1)I made a simple room with Deled and I generated a lighmapping texture

2)I export all in .X format

3)I resaved the x file with Mview(Microsoft's tool, because irrlicht dont like the .x format from Deled)

4)I loaded the mesh with this line:
IAnimatedMesh* mesh2 = smgr->getMesh("test.x");
scene::ISceneNode* node2 = smgr->addAnimatedMeshSceneNode( mesh2 );

5)finally i tried to apply the lighmapping with this one:
node2->setMaterialTexture( 0, driver->getTexture("LightMap0.bmp") );

result: very very ugly ('na schifezza)
"maybe" I miss some concept
Crying or Very sad

Paul-Jan · Posted: Sat Mar 05, 2005 8:29 am Post subject:

Ad 3) That is rather serious, do you know what exactly is the problem? It should be simple to fix.

As for the general approach, it looks to me like you are just adding a second texture layer (the lightmap) with the same u,v coordinates as the first layer. That is never going to work, as the lightmap has it's own set of u, v coordinates.

The point is: .x files don't allow for that second layer. So that is why we don't store the lightmap into .x files: because we can't.

[note: technically, .x files allow you to store _anything. The problem is that other programs won't know how to interpret the data.]

I have been thinking about a technique that would save the lightmap layer in a different .x file, then you'd have to blend the two x files at runtime. However, that would be a very lame technique.

condrula · Member Joined: 07 Oct 2004 Posts: 62 Location: Rome, Italy

Now I understand the necessity to load the dmf format Neutral

Il Buzzo · Posted: Sat Mar 05, 2005 3:40 pm Post subject:

Hi All,
Let me answer some questions.
[Vampire_Dark]
No I'm currently have developed some functions like SubdivideString and others that scan manually a string (char by char),and use them with a StringList class to load all DeleD items.
It's really the same I've used in my C++ templates (look at the support.h Wink

).
You can read what DMFLoader is doing in the log.txt file generated after DMF visualization.
DevCpp has no problems with new version of Irrlicht, the only thing is that to use DirectX you need to recompile with DirectX.DevPak.
[Condrula]
To Do a better thing you'd define each material like EMT_LIGHTMAP, and each MeshBuffer like a SMeshBufferLightMap that has two layers (one for primary texture and the other for Lightmap) and two sets of UV (like the texture slots). It's not a difficult thing but you need lightmap UV data.

Anyway had you some troubles with Loader?
I'm thinking to implement dynamic lights by loading not all lights in DeleD but only those having a particular User Info tag (in example : dynamic).
What do you think about it?
Some specifications about the DMFLoader you can try:

Paul-Jan · Posted: Sun Mar 06, 2005 9:14 am Post subject:

condrula · Member Joined: 07 Oct 2004 Posts: 62 Location: Rome, Italy

Paul-Jan · Posted: Sun Mar 06, 2005 2:43 pm Post subject:

I fixed it. Wasn't a problem with the ; and ;; (version 0.8 of Irrlicht does a nice check on that particular quirk in the x 3.02 specs), but with the irrlicht tokenizer as used in the xfile parser. It interpreted {materialName} as 1 token in stead of three.

DeleD now saves { materialName } (mind the spaces) and now Irrlicht seems to load my test x files without a problem. I'll report this at the irrlicht forum as well, because it is clearly a bug.

Had a pretty good time debugging (stepping through) irrlicht in VC6 though, I had never done that before Very Happy

Il Buzzo · Posted: Mon Mar 07, 2005 1:14 am Post subject:

Hi Guys,
I've just finished a little documentation, so I've released DMFLoader for Irrlicht.
You can download it from the following address:
http://www.ilbuzzo.net/downloads/DMFLoaderSDK.zip

This small package (44kb) contains the following files:
-CDMFLoader.h : CDMFLoader definition
-CDMFLoader.cpp : CDMFLoader implementation
-main.cpp : A short sample of usage (DMFLoader)
-example.dev : A DevCpp sample project file
-readme.txt : Some infos
-DMFLoader.chm : A little documentation

So I think you'll enjoy DeleD level loading directly in Irrlicht. Wink

I've just now noticed that DeleD 1.1 has been released, so I'm going to download it cause it corrects V flipping.
I'll then change a little my code (cause now it automatically flips textures).
Well, bye and enjoy.
Very Happy

[EDITED]:
I've changed my code so texture from 1.1 on won't be flipped while those of version 1.0 and inferiors will be flipped.
Now everything is working good.