Collision detection + debugger = wierd collisions?!

Hi there guys!
I'm totally new to NxOgre and i'm using it on my college thesis project.

So... first, i've built it successfuly and I've been following the 1st tutorial. I successfuly ran through it but i noticed that... the collision between the two cubes, does not occur at the cube's meshes but at the "object center" you might say. Meaning, there's mesh penetration Plus, when the cubes hit the ground, their meshes don't collide with the plane... again, it's their "object center" that collides

Thinking that this was abnormal, i move forward to the 2nd tutorial. Maybe the visual debugger would help to understand what was going wrong. Again, it was a breeze. But, when i run the app, I get no visual debugging

So my question is... what could be wrong with my approach?
Thanks for any help!

Here goes my code, just in case:
I've added some methods of mine so...
Application Code

class NxOgre_testapp : public ExampleApplication
{
public:
NxOgre_tutorial1App()
{
createdObjects = 0;
}
~NxOgre_tutorial1App()
{
}

protected:

//NxOgre Vars
NxOgre::World* mWorld;
NxOgre::Scene* mScene;
OGRE3DRenderSystem* mRenderSystem;

//NxOgre Debugger vars
NxOgre::VisualDebugger* mVisualDebugger;
OGRE3DRenderable* mVisualDebuggerRenderable;
Ogre::SceneNode* mVisualDebuggerNode;

vector<OGRE3DBody*> bodies;
int createdObjects;

virtual void createCamera(void)
{
// Create the camera
mCamera = mSceneMgr->createCamera("PlayerCam");

// Position it at 500 in Z direction
mCamera->setPosition(Vector3(0,200,500));
// Look back along -Z
mCamera->lookAt(Vector3(0,0,0));
mCamera->setNearClipDistance(5);
}


virtual bool configure(void)
{
// Show the configuration dialog and initialise the system
// You can skip this and use root.restoreConfig() to load configuration
// settings if you were sure there are valid ones saved in ogre.cfg
if(mRoot->showConfigDialog())
{
// If returned true, user clicked OK so initialise
// Here we choose to let the system create a default rendering window by passing 'true'
mWindow = mRoot->initialise(true);
// Let's add a nice window icon
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
HWND hwnd;
mWindow->getCustomAttribute("WINDOW", (void*)&hwnd);
LONG iconID = (LONG)LoadIcon( GetModuleHandle(0), MAKEINTRESOURCE(IDI_APPICON) );
SetClassLong( hwnd, GCL_HICON, iconID );
#endif
return true;
}
else
{
return false;
}
}


// Just override the mandatory create scene method
virtual void createScene(void)
{
// Create Physics World
initNxOgre();

// Set ambient light
mSceneMgr->setAmbientLight(ColourValue(0.5f, 0.5f, 0.5f));

// Create a light
Light* l = mSceneMgr->createLight("MainLight");
l->setPosition(20, 80, 50);
l->setDiffuseColour(.20,.20,.20);
l->setSpecularColour(.20,.20,.20);


//basic world is now set...
//creating objects
createPlane("GrassFloor");
//createSphere(Vector3(-50,200,0),1,"RustySteel");
//createSphere(Vector3(50,200,0),2,"");
createCube(Vector3(0,200,0),10,"");
//createCube(Vector3(0,200,100),10,"");

addForceOnBody("Cube_1", NxOgre::Vec3(0,0,-1000));
//addForceOnBody("Sphere_1", NxOgre::Vec3(3000,0,0));

}



// Create new frame listener
void createFrameListener(void)
{
mFrameListener= new NxOgre_tutorial1FrameListener(mWindow, mCamera, mVisualDebugger, mVisualDebuggerNode);
mRoot->addFrameListener(mFrameListener);
}

void addForceOnBody(string bodyName, NxOgre::Vec3 force)
{
unsigned int i;
OGRE3DBody* tempbody;
for (i = 0; i<bodies.size(); i++){
tempbody = bodies.at(i);
string tempname = tempbody->getNxActor()->getName();

if(tempname.find(bodyName)!= -1)
tempbody->addForce(force);
}

}

void createSphere(Vector3 pos, float scale = 1, string name = "")
{
OGRE3DBody* mBody;
//this is a scale between Ogre and NxOgre
static const Real physics_scale = 0.1;

//incrase number of objects
createdObjects++;

//create the body
mBody = mRenderSystem->createBody(new NxOgre::Sphere(scale),pos,"sphere.mesh");

//set object name
char* temp = new char[sizeof(int)];
itoa(createdObjects,temp,10);
char* temp2= new char[20];
char *aux = "Sphere_";
memcpy(temp2,aux,strlen(aux));
strcat(temp2,temp);
mBody->getNxActor()->setName(temp2);


//scale adjust
mBody->getEntity()->getParentNode()->scale(scale*physics_scale ,scale*physics_scale ,scale*physics_scale);

if (name.compare("") !=0)
mBody->getEntity()->setMaterialName("Examples/"+name);

bodies.push_back(mBody);
}
void createCube(Vector3 pos, float scale = 1, string name = "")
{

OGRE3DBody* mBody;
//this is a scale between Ogre and NxOgre
static const Real physics_scale = 0.1;
scale = scale * physics_scale;
//incrase number of objects
createdObjects++;

//create the body
mBody = mRenderSystem->createBody(new NxOgre::Box(scale,scale,scale),pos,"cube.mesh");


//set object name
char* temp = new char[sizeof(int)];
itoa(createdObjects,temp,10);
char* temp2= new char[20];
char *aux = "Cube_";
memcpy(temp2,aux,strlen(aux));
strcat(temp2,temp);
mBody->getNxActor()->setName(temp2);
mBody->getEntity()->getParentNode()->scale(scale*physics_scale ,scale*physics_scale ,scale*physics_scale );
mBody->setMass(10);

if (name.compare("") !=0)
mBody->getEntity()->setMaterialName("Examples/"+name);

bodies.push_back(mBody);
}

void createPlane(string name)
{

mScene->createSceneGeometry(new NxOgre::PlaneGeometry(0, NxOgre::Vec3(0, 1, 0)), Matrix44_Identity);

MovablePlane *plane = new MovablePlane("Plane");
plane->d = 0;
plane->normal = Vector3::UNIT_Y;

Ogre::MeshManager::getSingleton().createPlane("PlaneMesh",
ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
*plane, 1200, 1200, 1, 1, true, 1, 3, 3, Vector3::UNIT_Z);
Entity *planeEnt = mSceneMgr->createEntity("PlaneEntity", "PlaneMesh");
planeEnt->setMaterialName("Examples/"+name);
planeEnt->setVisible(true);
Ogre::SceneNode* mPlaneNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
mPlaneNode->attachObject(planeEnt);
//mPlaneNode->scale(1, 1, 1);
}



void logActors()
{
//test to log all NxOgre Actors
unsigned int i;
OGRE3DBody* tempbody;
Ogre::LogManager::getSingleton().logMessage(LML_NORMAL,"Our Objects! \n");

for (i = 0; i<bodies.size(); i++){
tempbody = bodies.at(i);
string tempname = tempbody->getNxActor()->getName();
Ogre::LogManager::getSingleton().logMessage(LML_NORMAL,tempname);
}

}

private:
void initNxOgre()
{
//init NxOgre World
mWorld = NxOgre::World::createWorld();
//init NxOgre Visual Debugger
mVisualDebugger = mWorld->getVisualDebugger();
mVisualDebuggerRenderable = new OGRE3DRenderable(NxOgre::Enums::RenderableType_VisualDebugger);
mVisualDebugger->setRenderable(mVisualDebuggerRenderable);
mVisualDebuggerNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
mVisualDebuggerNode->attachObject(mVisualDebuggerRenderable);
mVisualDebugger->setVisualisationMode(NxOgre::Enums::VisualDebugger_ShowAll);


NxOgre::SceneDescription sceneDesc;
sceneDesc.mGravity = NxOgre::Vec3(0, -9.8f, 0);
sceneDesc.mName = "MyTestApp";
//attach scene to the world
mScene = mWorld->createScene(sceneDesc);

// Setup default physical attributes of the world
mScene->getMaterial(0)->setStaticFriction(0.5);
mScene->getMaterial(0)->setDynamicFriction(0.5);
mScene->getMaterial(0)->setRestitution(0.1);

// Declare rendering engine
mRenderSystem = new OGRE3DRenderSystem(mScene);
}
};


Application FrameListener Code

class NxOgre_testappFrameListener : public ExampleFrameListener
{
private:
SceneManager* mSceneMgr;

protected:
NxOgre::TimeController* mTimeController;

NxOgre::VisualDebugger* mVisualDebugger;
Ogre::SceneNode* mVisualDebuggerNode;

public:
NxOgre_tutorial1FrameListener(RenderWindow* win, Camera* cam, NxOgre::VisualDebugger* visualDebugger, Ogre::SceneNode* node)
: ExampleFrameListener(win, cam)
{
mTimeController = NxOgre::TimeController::getSingleton();
mVisualDebugger = visualDebugger;
mVisualDebuggerNode = node;
}

bool frameStarted(const FrameEvent& evt)
{
mTimeController->advance(evt.timeSinceLastFrame);
mVisualDebugger->draw();
mVisualDebuggerNode->needUpdate();

bool ret = ExampleFrameListener::frameStarted(evt);


return ret;

}

};


help anyone?

That seems a little strange. Do you have any screenshots of it? This is just with the Visual Debugger right? With it turned off, everything is normal?

Hi betajaen (and congrats on your great work )

Yeah i've just taken 2 screenshot. here they are

Initial State



Final State


It happens whether the Visual Debugger is on or off :S
It seems that the objects are chopped in half by the ground plane, hence my deduction about the collisions occuring at the "object center" :S
Btw, I'm using bloodymess.

Thanks for your help!

argh sorry for the broken picture links...

Initial State


Uploaded with ImageShack.us

Final State


Uploaded with ImageShack.us

Ahh, right. Okay either the meshes are offset (all of the vertices are above +Y 0), or the cube and sphere in NxOgre are very very very small. I vote for the first one. Have you tried using my meshes that come with the tutorials?

I've been just trying this with the cube, and changed the mesh to the cube.1m.mesh and it worked with a different scale :D
It seems i was working with a very small scale.
So the problem here is with the .mesh files right? I've tested with some cubes (which work fine now) but the sphere is messed up.

And i still get no debug information :\
Shouldn't the bounding boxes wireframes be drawn, etc? :\

Anyway, this is just a test app to work my way around the NxOgre I'll be using humanoid meshes and other objects. Can you suggest how this can be done?

Many thanks

Are those the cube/sphere meshes that come with Ogre? If yes; then they are massive. NxOgre works in metres, and I think the cube is 100x100x100 big!

Are you using Detritus or Bloody Mess?

Hi there! Sorry for answering so late. Had to take the weekend off

Yeah, I was working with the sphere from Ogre. (The cube is now the NxOgre One) But i'll be working with some custom meshes in my project. I hope they work alright! If not, i'll let you know

Working with bloody mess
Should i switch to detritus?

cheers

Always use Detritus. Bloody Mess is almost two years old now.

:O alright then!

On the wikipage there's only a like for the bloodymess github :\ so i downloaded it. I'll try to get the detritus and work around. If I get into some trouble, i'll let you know.

Thanks for your help!