Trouble with bounding box

[VeTaL]

Code: Select all

 // Load mesh
   _mesh = _scene->getMesh("../Assets/Barrel.3ds");
   _node = _scene->addMeshSceneNode(_mesh);
   _node->setMaterialFlag(EMF_LIGHTING, false);
   _node->setParent(_scene->getRootSceneNode());
   pos.Y += 10;
   _node->setPosition(pos);

   // Add selector
   scene::ITriangleSelector* selector = _scene->createTriangleSelector(_mesh,_node); 
   _node->setTriangleSelector(selector); 
   _node->setName("wall"); 
   
   // Add collision responder
   const core::aabbox3d<f32>& box = _node->getBoundingBox();
   core::vector3df radius = box.MaxEdge - box.getCenter();
   scene::ISceneNodeAnimatorCollisionResponse* anim = _scene->createCollisionResponseAnimator( 
      selector, SContainer.MC->_node,radius);  // idk, why this dont works: radius is (40,25,40), thus it must works properly
   anim->setGravity(core::vector3df(0,0,0)); 
   anim->setCollisionCallback(new CollisionBarrelAndActors()); 
   SContainer.MC->_node->addAnimator(anim); 

   anim->drop(); 
   selector->drop();

#ifdef SHOW_BOUNDING_BOXES
   _node->setDebugDataVisible(scene::EDS_BBOX);
#endif

CollisionBarrelAndActors - callback from tutorial, it just prints event to console
SContainer.MC - player

Looking like players bounding ellipse is about (1,1,1).
While moving, part of the player moves incide the barrel, but then stops.

But debug shows that ellipse is large enough: (40,25,40)

[shadowslair]

Too lazy to read or test, but this looks suspicious:

// Add collision responder
const core::aabbox3d<f32>& box = _node->getBoundingBox();
core::vector3df radius = box.MaxEdge - box.getCenter();

Probably it should be sth. like:

// Add collision responder
const core::aabbox3d<f32>& box = _node->getTransformedBoundingBox();
core::vector3df radius = box.MaxEdge - box.getCenter();

It should be even safer to update node abs position before getting the transformed box. Just in case.

[VeTaL]

Thanks for taking a look
Tried your variant- still the same problem.

Anyway, debugger shows that radius is (40,25,40).

Edit: well... maybe i need to update ellipse every frame, or something like that?

[shadowslair]

Code: Select all

 
#ifdef SHOW_BOUNDING_BOXES
   _node->setDebugDataVisible(scene::EDS_BBOX);
#endif

Just note that if you`re using this for debugging, it may mislead you, because in the render()-call the node sets the driver transformation with its own, then draws its bounding box, so the bbox drawn may not be exactly the one you get. Also, keep in mind that the ellipsoid center may not match the bbox center (in case your mesh is not symmetrical etc.), so this approach may not be very good as-is in the general case. I advise you to use the debugger and check those lines to see what exactly is going wrong. I`m sure it`s something very trivial...

[VeTaL]

I also think that i missed something simple, but bboxes shows that everything is ok 0_0