>is it a crash, or are you hitting an assert?
Hi, im not sure, how do i recognize assert? It shows as typical windows program-shutdown error with report to microsoft. It contains some dump in report, though.

>what is it you're trying to load?
At first i tried to load .hkx file that was created by the demo, because demo succesfully uses that file internally when compares shapes. I took load code and tried to create box using loaded shape:

hkpRigidBody* HavokClass::CreateFile( void )
{
	hkIstream stream("Caropca.hkx");
	hkResource* resource = hkSerializeUtil::load(stream.getStreamReader());

	hkpRigidBodyCinfo bodyCinfo;

	if (resource)
	{
		hkpRigidBody* readRigidBody = resource->getContents();
		resource->removeReference();
		bodyCinfo.m_shape = readRigidBody->getCollidable()->getShape();
	}

//	hkpBoxShape* boxShape = new hkpBoxShape(halfExtents);	//tried through normal rigid body creation routine
//	bodyCinfo.m_shape = boxShape;

	const hkReal boxMass = 10.0f;
	hkpMassProperties massProperties;
	hkpInertiaTensorComputer::computeShapeVolumeMassProperties(bodyCinfo.m_shape, boxMass, massProperties);

	bodyCinfo.setMassProperties(massProperties);

	hkpRigidBody* rigidBody = new hkpRigidBody(bodyCinfo);
	return rigidBody;
}

Later i used custom box, exported from 3d max by havok content tools, with same results. Honestly, i dont know what am i doing. Interesting that my box shows fine in content viewer, but generated from demo - just empty.

>are you surrounding that code with a hkpWorld::lock(), hkpWorld::unlock() pair?
Yes, i have world->lock() in the begining of Havok::CreateBox(), and unlock just before its return (CreateBox returns pointer of hkpRigidBody for futher use). I even tried my own style of protection from accessing world simultaneously, but it keep crashing at box creation from parallel thread. Crash accompanied by the same windows report error.

My litle synch effort:

bool HavokBusy = false;
bool HavokPause = false;

while (true) {	//havok thread
	while(HavokPause);	//pause if someone writes to world
	HavokBusy = true;	//notice others that its too late for writing
	Havok.step();		//cause we are computing
	HavokBusy = false;	//can write again
	Sleep ( 16 );
}

{	//main thread
	HavokPause = true;	//notice havok that we are writing
	while(HavokBusy);	//wait until he allows
	Havok.CreateBox();	//try to create box, crash happens
	HavokPause = false;	//allow him go on
}

I suspect error goes not from accessing something simultaneously, i'm sure i excluded that problem in tests. Could it be from initializing havok as non-multithread? Maybe thats why he is not expecting any inputs by parallel thread.

>it should print something out to the console.
You talking about error report function, which needed for hkBaseSystem::init? It doesn't print anything for me, neither at start of programm neither at the crash.

>Also, you should be running in debug mode in visual studio (I am assuming you are using visual studio) which should give you more information about the error if it is part of your code.
I do compile in debug, then manually run app from folder, had no any tips from visual. Or, should i somehow run it through visual studio? //Didn't really dig into visual internal functions.

>Yes, you probably want to initialize Havok multithreaded.
I'm little concerned about this, i heard it needs at least two threads for work, but i only need one havok processing thread, and another just adjusts/accesses it sometimes, is that possible?

>looks like you're loading a rigid body as a resource, setting the shape pointer of a CInfo from that resource, deleting the resource, then trying to create a new rigid body from the now-deleted shape.
Tried to remove that reference-removing from code, but it still crashed. By the way, do every created rigid body contains its own copy of shape, or several identical bodies can have only one copy of shape for all them? Is this why resource still needed, for containing shape, to which all bodies refer?

>As for asserts, if you're not seeing them you're probably either running in Release mode or not using the console.
Probably second, where i can find console?

>Read this
Well, there was no callstack in error message, as for assert - i'll post it as soon as i get console. I will try reproduce mesh loading in demo now.

Aha, moved code into "PhysicsVdb" standalone demo, and got the same crash, except for as this one was in console, it printed this:

.\Util\hkNativePackfileUtils.cpp(98): [0x3F7A4853] Warning: Asked for hkpRigidBody but contains hkRootLevelContainer. Returning null

Modifed rigid body creation in named demo as follows:

		hkpRigidBody* rigidBody;
		{
			// Create a box 1 by 2 by 3
//			hkVector4 halfExtents; halfExtents.set(0.5f, 1.0f, 1.5f); //removed
//			hkpBoxShape* boxShape = new hkpBoxShape(halfExtents); //removed

			hkIstream stream("Caropca.hkx"); //added
			hkResource* resource = hkSerializeUtil::load(stream.getStreamReader()); //added
			hkpRigidBody* readRigidBody = resource->getContents(); //added //i guess problem is here

			hkpRigidBodyCinfo bodyCinfo;
			bodyCinfo.m_shape = readRigidBody->getCollidable()->getShape(); //boxShape; //changed

			//  Calculate the mass properties for the shape
			const hkReal boxMass = 10.0f;
			hkpMassProperties massProperties;
			hkpInertiaTensorComputer::computeShapeVolumeMassProperties(bodyCinfo.m_shape, boxMass, massProperties); //changed

			bodyCinfo.setMassProperties(massProperties);

			// Create the rigid body
			rigidBody = new hkpRigidBody(bodyCinfo);

			// No longer need the reference on the boxShape, as the rigidBody now owns it
			bodyCinfo.m_shape->removeReference(); //changed
		}
		
		// Add the rigidBody to the world
		world->addEntity(rigidBody);

I still don't get it, like, at all. What is proper spell to load some rigid bodies from files? Is anywhere is a tutorial? The documentations do nothing, i can't understand what i supposed to do to toss some custom geometry into runtime :(.
//Other works fine, managed to plug Havok into Ogre, discarded for now my multithreading, runtime created geometry works too, but why so much trouble with serializing..

"is not correct unless the only thing in the file is an hkpRigidBody."
Well it's meant to be, i have one simple box for test in .hkx file, i exported it from max via content tools basic metod + prune data, should i export it some special way to have single body per file? I wanted to have pointers for loaded bodies, like load single body and attach it's XYZ-ROT to visual model.

"A good example is in Demo\Demos\Common\Api\Serialize\SimpleLoad\SimpleLoadDemo.cpp"
Tried earlier to replace hkx file that this demo uses with my own, crashed) Still loads other replaced demo files without problems. But content tools stand-alone loads my file fine, box even starts to fall due to gravity, i wonder why it crashes havok. //Always re-checking with reliable file from serialize demo (WindChime2_L4101.hkx) to see on which side problem is, demo refuses to load my box, while in my app it refuses to load anything.
//Can't try demos code directly in my app, had trouble locating origin of "m_loadedData" to compile it.

Thanx for code, it don't crashes, but don't loads anything either. it fails at "if( resource != HK_NULL )" check, with my box and with WindChime2_L4101.hkx too.

So .hkx(and other formats) is a scene, but if i made it to contain only one rigid body, i can reliable find it in 0th slot? Thanx, thats enlights things a little.

I have file "Caropca.hkx" in the same directory as my executable, simple load demo seems to use relative path ("Resources/Common/Api/Serialize/SimpleLoad" + fileName), so i try to load file as loadFileStream( "Caropca.hkx" );, doesn't looks like path problem.
//Even if my file defective, loadFileStream( "WindChime2_L4101.hkx" ); ends without resource too.

Yes, i'm building in debug, and there's no file-related errors in console.

isOk() returns status about last load attempt? Placed it right after if( resource != HK_NULL ){} part of code, returns true, so, its a patch problem then? Stream reader uses global or relative?

I'm using log.txt instead of console, so i modified message to output in char:
sprintf(log, "Failed to load 'WindChime2_L4101.hkx'(stream ok: %d) error: [%d] %s\n", loadFileStream.isOk(), loadError.id, loadError.defaultMessage.cString());

Failed to load 'WindChime2_L4101.hkx'(stream ok: 1) error: [7] Packfile versioning support is not linked. Versioning packfiles at runtime was deprecated in Havok-7.0.0.
To do so requires linking some deprecated code from Source/Common/Compat/Deprecated
If you are using hkProductFeatures.cxx, ensure you do not define HK_EXCLUDE_FEATURE_SerializeDeprecatedPre700.
Note that by default this pulls in a lot of code and data (mainly previous versions of hkClasses).
Some extra effort is required to strip the unused code and data but it will still cost several hundred Kb.
Alternatively, you can use Tools/PackfileConvert/AsseetCc2 to convert your packfiles the the latest version before loading.

Oops) undefined exclude, got another error:

.\Version\hkVersionPatchManager.cpp(831): [0x3F79DDB1] Warning: Source contains hkpEntity version 2, but 3 is the current version.
Make sure required patches are registered to update this class.
resource == HK_NULL!! //my error from if( resource != HK_NULL ) { ... } else { log.Log ( "resource == HK_NULL!!\n" );
Failed to load 'WindChime2_L4101.hkx'(stream ok: 1) error: [4] Unable to version contents, check warning log

Why havok complains about version? I used the same windchime file that uses demos from package. //I guess, i should try to convert files to the last version..

Right, had both of them, i think i copied entire code from one of the demos... WindChime finally loaded, more important - my rigid body too. Uncommented both excludes back on, still working with my model, created another one, convex, loaded too, updating meshes wasn't needed. //I didn't found folder "Tools/PackfileConvert/AsseetCc2" anyway, not in havok directory nor in standalone tools, though both have "Tools" folder.

Thanks so much Tyler, i finally can start doing something there.
By the way, is there any, emm, tutorials about havok functions and systems? All i could find - few very dry and technical documentations, which ships with havok.

Yeah, nice videos, but as Kissy said, they are pretty upperbound. I used to make mods earlier, games had rather big amount of amateur tutorials on programming, problem highlights and stuff. But havok is standalone, and looks like have only official documentation, some information starvation occurs.

It's me again, with brand new logic problem, but i'll ask it here. I'm finally making something playable, but then i tried to introduce entities health, i stuck into something like dead end.

Firstly i created just a class which holds pointers to its physics and visual components, and syncs visual part with physical coordinats. Collision detection soon was around too, rockets consistently aplied impulses to targets and been removed after hit. But when i added health variable to my class, i realized i cant access my class from rigid body which been hit by rockets - it dosen't even knows it's been monitored by some custom class. At first i thought i could use static cast to bring me from rigid body to it's full class, but i didn't inherited from rigid body, so it is not even a part of my class.

Okay, lets inherit my class from rigid body, but another thing stopped me - i no longer creating rigid bodies runtime, i use serialized .hkx files for my physboxes. But they are hkpRigidBody'es, not my inherited class, which i can't export from 3d max.

I also tried to edit rigid body header to add health function internally, but Havok didn't liked my idea and crashed. What can i do to make rigid bodies loaded from binary file be part of complex entities?

Oh, thank you, example with user data is very handy, thats what i can work with.