Problem with Character Controller

[ihar3d]

Hi. I have just tested of Character Controller and got "Unhandled exception at 0x004cc045 in DebugCharacterDemo.exe: 0xC0000005: Access violation reading location 0x00000004." after placing lines with addition of ghost object and character to world after initializing of BSP level - test file is in attachment. Any ideas how to fix this? Thanks!

[mickey]

Yes its strange, can you try adding the ground shape after adding the character to the dynamics world? This should fix it.

[ihar3d]

works ok in this case, but it is imposible to add new controller after initializing\adding other objects, and it's strongly necessary to be able manage controllers during game.

[Erwin Coumans]

We will look into it this week, check progress here.

Can you provide a callstack at the time of crash, and also provide a zipped .cpp file (instead of patch)?

Thanks for the feedback,
Erwin

[ihar3d]

Erwin, thanks for the quick answer! Please find modified demo's code is in attachment.

and call stack:

> DebugCharacterDemo.exe!btHashedOverlappingPairCache::needsBroadphaseCollision(btBroadphaseProxy * proxy0=0x00000000, btBroadphaseProxy * proxy1=0x02831b10) Line 111 + 0x3 bytes C++
DebugCharacterDemo.exe!btHashedOverlappingPairCache::addOverlappingPair(btBroadphaseProxy * proxy0=0x00000000, btBroadphaseProxy * proxy1=0x02831b10) Line 123 + 0x10 bytes C++
DebugCharacterDemo.exe!btPairCachingGhostObject::addOverlappingObject(btBroadphaseProxy * otherProxy=0x02831b10) Line 77 C++
DebugCharacterDemo.exe!btGhostPairCallback::addOverlappingPair(btBroadphaseProxy * proxy0=0x02831b10, btBroadphaseProxy * proxy1=0x02832050) Line 145 C++
DebugCharacterDemo.exe!btHashedOverlappingPairCache::internalAddPair(btBroadphaseProxy * proxy0=0x02831b10, btBroadphaseProxy * proxy1=0x02832050) Line 246 C++
DebugCharacterDemo.exe!btHashedOverlappingPairCache::addOverlappingPair(btBroadphaseProxy * proxy0=0x02832050, btBroadphaseProxy * proxy1=0x02831b10) Line 127 C++
DebugCharacterDemo.exe!btAxisSweep3Internal<unsigned short>::sortMinDown(int axis=2, unsigned short edge=255, btDispatcher * __formal=0x024600c0, bool updateOverlaps=true) Line 801 C++
DebugCharacterDemo.exe!btAxisSweep3Internal<unsigned short>::addHandle(const btVector3 & aabbMin={...}, const btVector3 & aabbMax={...}, void * pOwner=0x02534430, short collisionFilterGroup=32, short collisionFilterMask=3, btDispatcher * dispatcher=0x024600c0, void * multiSapProxy=0x00000000) Line 525 C++
DebugCharacterDemo.exe!btAxisSweep3Internal<unsigned short>::createProxy(const btVector3 & aabbMin={...}, const btVector3 & aabbMax={...}, int shapeType=10, void * userPtr=0x02534430, short collisionFilterGroup=32, short collisionFilterMask=3, btDispatcher * dispatcher=0x024600c0, void * multiSapProxy=0x00000000) Line 231 + 0x26 bytes C++
DebugCharacterDemo.exe!btCollisionWorld::addCollisionObject(btCollisionObject * collisionObject=, short collisionFilterGroup=, short collisionFilterMask=) Line 111 + 0x44 bytes C++
DebugCharacterDemo.exe!CharacterDemo::initPhysics() Line 142 C++

[Erwin Coumans]

It has been fixed in the latest trunk:
http://code.google.com/p/bullet/source/detail?r=1527

Thanks again for the report,
Erwin

[ihar3d]

Erwin, thanks a lot for the bugfix!!!