CRySoL Intro Screenshot

This is a little intro (<3K) I just coded for fun… and for www.crysol.org

Test this two binaries (fisrt please`chmod +x <file>`):

• 4k (7z binary)
• gz7k (gzip binary)
• uncompressed binary

Source: crysol.tgz

Be sure to check slack’s homepage if you are interested on 4k intros for linux. He’s got a nice presentation talking about tips and tricks on this topic

Trimesh is a nice feature for defining the geometry of a body in ODE. You just need a vertices and a faces array. Md3 files encode the faces in CCW and ODE (and OpenGL too) does it in CW. So you need to make the transformation, thus creating a new array of dVector3 (you must do this to unpack the fixed md3 format vertex info).

Here is a llitle piece of code that resumes the proccess: ( GetModel() returns a libmd3_file* )

  libmd3_mesh* meshp;
  meshp = GetModel()->meshes;
 
  int* tri;
  dVector3* triVert;  
 
  tri = (int*) malloc (meshp->mesh_header->triangle_count*sizeof(int));
  triVert = (dVector3*) malloc (meshp->mesh_header->vertex_count*sizeof(dVector3));
 
  std::cout << meshp->mesh_header->triangle_count << std::endl;
  std::cout << meshp->mesh_header->vertex_count << std::endl;
  std::cout << "Faces: ";
  for (int i=0;i < meshp->mesh_header->triangle_count*3; i+=3){
    tri[i+0]=meshp->triangles[i+1];
    tri[i+1]=meshp->triangles[i+2];
    tri[i+2]=meshp->triangles[i+0];
    std::cout << tri[i] << " ";
    std::cout << tri[i+1] << " ";
    std::cout << tri[i+2] << " - ";    
  }
 
  std::cout << " Verts: ";
  for (int i=0;i < meshp->mesh_header->vertex_count; i++){
    triVert[i][0]=meshp->vertices[i*3]*scaleFactor; 
    triVert[i][1]=meshp->vertices[i*3+1]*scaleFactor; 
    triVert[i][2]=meshp->vertices[i*3+2]*scaleFactor; 
    std::cout << "(" << triVert[i][0] << " ";
    std::cout << triVert[i][1] << " ";
    std::cout << triVert[i][2] << ") - ";
 
  }
 
  mtriMesh = dGeomTriMeshDataCreate();
  dGeomTriMeshDataBuildSimple(mtriMesh, (dReal*)triVert, meshp->mesh_header->vertex_count, tri, \
			      meshp->mesh_header->triangle_count);
  mOdeGeom = dCreateTriMesh(sSpace, mtriMesh, NULL, NULL, NULL);
  dGeomSetData(mOdeGeom, (void*)"md3");

After looking for a 3D Engine, I’ve choosen to code myself one that fits my needs. The game will be free software, so there no need of a comercial feeling (e.g. packing, hidding … etc.. the fs for the game models, textures, etc…).

At the moment, I’m using:

• SDL
• OpenGL (GL and Glu Extensions, not GLUT!)
• ODE
• libmd3 (debian package)

There is a lot TO DO:

• BSP Maps (Blender or GtkRadiant compatible… I still don’t know)
• Python Scripting
• Bezier Paths (for the camera tracking)
• Lots of models
• Lots of textures
• Lots of 2D stuff for the non 3D layer (hud, messages, etc…)

If you are interested please contact me.

The project is hosted at: Naves@GoogleCode

I’m finishing a little project for my school of computer science. No it’s not anything related to IA, 3D, free software … it’s a mp3 flash player. It uses a mysql database… blah blah

mp3 flash player

Feel free to download the source:

mp3-flash.zip

A few students from my shool of science university a I are planning to make a game inspired by titles like WipeOut Pulse ¹ and the rest of the series!

I’m reviewing some 3D engines, I’ve two in mind, because our game must be distributed under a GPL license:

• Crystal Space ² - it’s GPL
• Ogre 3D ³ - it’s LGPL (for ours needs).

Ogre 3D based game screenshot

Certanly I like Ogre 3D because of the screenshots of actually working game the have in their site. Crystal Space screenshots are outdated, and it’s not comatible with GLSL… sad. So I think we finally will use Ogre and SDL for the input control.

So here it’s the source code for the ol’ intro I coded for the PSP…

brue_intro_all