Having trouble with a mesh strider

[benb7760]

I am currently using the ogre Mesh Strider example here: http://www.ogre3d.org/wiki/index.php/BulletMeshStrider

I am quite new to mesh striders but I have modified it to fit into my program, the trouble is, when I create a Rigidbody with a btBvhTriangleMeshShape and set the third parameter to false, the object does not collide with anything. When i set it to true, the program crashes, pointing to btQuantizedBvh.h to this line:

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SIMD_FORCE_INLINE void quantize(unsigned short* out, const btVector3& point,int isMax) const
...........
out[0] = (unsigned short) (((unsigned short)(v.getX()) & 0xfffe));

I have also tried loading it into a btGImpactMeshShape, but nothing happens. However I have no experience using GImpact and am not sure if I have to do anything to set it up.

When logging the CollisionShape's calculateSerializeBufferSize() result, I get a value of 60, when using ogrehead.mesh as the model (http://tatis3.springnote.com/pages/1004 ... nts/422906). not sure if this is saying anything?

Here are the functions in my code that i think matter, can post more later if necessary:
The class which creates and holds pointers to the bullet classes for creating the rigidbody

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class bulObj {
public:
	bulObj(){
		type =-1;
	}
	//~bulObj();
	void newRigid(int obid, int instid, objectTable * obTblPtr, renderSystem * rsyPtr, btDiscreteDynamicsWorld * wrld, ogreMeshStrider * strid){//, std::string meshLoc){
		objID = obid;
		instID = instid;
		dynamicz = wrld;
		objTblPtr = obTblPtr;
		rsysPtr = rsyPtr;
		ogMeshStrd = strid;
		if(type != -1){;
			//break;
		}
		else{
			type = 0;
			testobj = new bulletPhysMState(objID, instID, objTblPtr, rsysPtr);
			mass =1;
			fallIntertia = btVector3(0,0,0);
			//fallShape = new btGImpactMeshShape(ogMeshStrd);
			//fallShape = new btSphereShape(1);
			fallShape = new btBvhTriangleMeshShape(ogMeshStrd,true,false);
			fallShape->calculateLocalInertia(mass,fallIntertia);
			btRigidBody::btRigidBodyConstructionInfo fallRigidBodyCI(mass,testobj,fallShape,fallIntertia);
			fallRigidBody = new btRigidBody(fallRigidBodyCI);
			dynamicz->addRigidBody(fallRigidBody);
		}
	}
private:
	btScalar mass;
	btVector3 fallIntertia;
		int objID, instID;
		int type; // 0 Rigidbody
		bulletPhysMState* testobj;
		btCollisionShape* fallShape;
		btRigidBody* fallRigidBody;
		renderSystem * rsysPtr;
		objectTable * objTblPtr;
		btDiscreteDynamicsWorld * dynamicz;
	ogreMeshStrider * ogMeshStrd;
};

the code for handling the mesh striders.
In this code, I am confident that the objTblPtr code is working correctly. It is something I have designed myself to handle positions of objects so that I can keep Ogre and Bullet as separate as possible.

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	std::map <int, bulObj*> bulObjMap;
std::map <int, ogreMeshStrider*> meshSMap;

void addMesh(int objid, int instid){
		if(meshSMap.find(objid) == meshSMap.end()){
			Ogre::Mesh * ogMesh = rsysPtr->getMesh(objTblPtr->getInstGFXID(objid, instid));
			meshSMap[objid] = new ogreMeshStrider(ogMesh);
		}
	}

//the code which calls the create rigid body routine shown earlier. returns the integer ID of the rigidbody for
//one of my own systems to handle

int newRigidB(int objID, int instID){
		int tmp =0;
		while(bulObjMap.find(tmp) != bulObjMap.end()){
			tmp++;
		}
		bulObjMap[tmp]->newRigid(objID, instID, objTblPtr, rsysPtr, dynamicsWorld, meshSMap[objID]);
		return tmp;
	}

The mesh strider remains the same as on the link previously, however I have changed the includes to fit with my own setup.

Does anybody have any suggestions?