Custom mesh loaders

[qwertyuiop23]

Are there any custom model premade model loaders out there?

For example functions that will load .x, .obj, .3ds etc into bullet arrays or will I have to do this myself? I am using Irrlicht to draw the models so this already can load all these things so I only need functions to be able to load in the collision data. So before I try to start making my own I was wondering if there were any already out there?

Cheers
Qwertyuiop23

[Dirk Gregorius]

John Rattcliff released a simple mesh loader which can deal with a bunch of file formats. I don't think you can load it directly into Bullet, but it should be quite easy to do this. You can download it here:

http://code.google.com/p/meshimport/

Cheers,
-Dirk

[qwertyuiop23]

That mesh loader is quite confusing and it is not designed for bullet. Are there any others out there that are easy to implement and are designed for Bullet?

[Erwin Coumans]

There are several examples:

1) example to create a mesh from an .obj file in Bullet/Demos/ConvexDecompositionDemo
2) example to load a Quake .bsp into Bullet in Bullet/Demos/BspDemo
3) example to initialize Bullet objects from a Blender .blend file into Irrlicht, see http://gamekit.googlecode.com (download section IrrKit, or svn branches/IrrKit)
4) example to load a COLLADA .dae file into Bullet in http://dynamica.googlecode.com, Bullet/Demos/ColladaDemo

The easiest way is just to use this:

Code: Select all

		btTriangleMesh* trimesh = new btTriangleMesh();
		for ( i=0;i<numTriangles;i++)
		{
			trimesh->addTriangle(triangles[i].vertex0,triangles[i].vertex1,triangles[i].vertex2);
		}
		btCollisionShape* shape = 0;
		if (movingDynamic)
		{
				shape = new btConvexTriangleMeshShape(trimesh);
		}
		else
		{
				//static, non-moving world environment geometry
				bool useQuantization = true;
				shape  = new btBvhTriangleMeshShape(trimesh,useQuantization);
		}

Thanks,
Erwin

[molma100]

hey, im wondering if this works with GLM, a model loading library originally created by Nate Robins?

I have tried something like this before and it caused my game to crash..

Im going to try this again.