Real-Time Physics Simulation Forum

Never mind, solved it by switching from broadphase filter to narrowphase filter. Basically the exact same code but I'm using

mDispatcher::setNearCallback

I'm using my own custom character controller as i couldn't use Bullets. My player is a ragdol with btRigidBody bodyparts where linear and angular factors are set to 0 and these limbs are updated based on model animation as long as the player has control over their character. As soon as collision wit...

Hello, I'm trying to use needBroadphaseCollision to filter collision between moveable objects and player. It works pretty well but there is one problem. The idea is simple: If an object is still or does not move faster that a threshold ignore collision with players physical body. In this case I use ...

Make your own, that's what i did. I just couldn't use Bullets.

https://www.youtube.com/watch?v=bITTsHFVZn0

I didn't know what CCD was, I'm checking it out right now and i think i will go with that. Thanks.

Hello, I'm trying to add a ragdoll to my game. I'm using the Ragdoll demo as basis for this. The problem is that when my ragdoll falls from higher height some of its body parts fall through terrain and it gets stuck. I'm using btHeightfieldTerrainShape for terrain and btTriangleMesh for buildings an...

Thanks for the tip, i used BT_DECLARE_ALIGNED_ALLOCATOR(); but now, when i delete this class i get assertion failure _BLOCK_TYPE_IS_VALID(pHead->nBlockUse).

I'm using bullet physics for a longer time. I always used it in MS Visual Studio 2010. For a while i downloaded MS Visual Studio 2013. It took a while to set it up, but now i can use bullet in 2013 as well. But now, when i build my project i get warning: warning C4316: 'btCollisionDispatcher' : obje...

Simple question, In the begin i used m_body->setActivationState(DISABLE_DEACTIVATION); for player and NPCs but now i have too many NPC and letting them this way cause drop of fps. So i decided to remove this line, fps goes up, but now applying forces NPCs wont move them (i know the reason). So first...

If you want heightmap terrain you can use btHeightfieldTerrainShape *m_heightfieldShape = new btHeightfieldTerrainShape(x_width, z_height, map1d, 1, mapmin, mapmax, 1, PHY_FLOAT, false); I'm using this for 2000x2000 heightmaps ~ 8M triangles or btTriangleMesh* trimesh = new btTriangleMesh(); for (in...

Collision only with standard meshes - yes, player and NPCs have btCompoundShape build from boxes, spheres, ... Not sure but i HOPE its narrow (i could check broad without bullet). Actually its not setting world transform its update. Torpedos position its updated without bullet, then ghost objects wo...

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How should i set btGhostObject to collide with trianglemesh?

You should look at CharacterDemo. class ClosestNotMe : public btCollisionWorld::ClosestRayResultCallback { public: ClosestNotMe (btRigidBody* me) : btCollisionWorld::ClosestRayResultCallback(btVector3(0.0, 0.0, 0.0), btVector3(0.0, 0.0, 0.0)) { m_me = me; } virtual btScalar addSingleResult(btCollisi...

Hi, im working on a submarine game and im using btGhostObject for torpedos. ////init m_ghostBody = new btPairCachingGhostObject(); m_ghostBody->setCollisionShape(in_sm->m_pGame->go_ammoCtrl.m_colShape); m_ghostBody->setCollisionFlags(m_ghostBody->getCollisionFlags() | btCollisionObject::CF_NO_CONTAC...

btBvhTriangleMeshShape is a shape intended for static objects only, and doesn't support collisions with itself Thanks, this helped. I noticed GImpact in App_MovingConcaveDemo, i try to implement it. It is a one-man-submarine game, i used spheres but on some models sphere does not fit the entire mod...