BEPUphysics

If I'm not mistaken, doesn't the Collidable.Pairs list contain all pairs that are in the NarrowPhase, meaning that they don't necessarily have any contacts? I'm definitely seeing collidables with pairs in their Pairs list that have no contacts. What I need is a collection of pairs that have contacts...

We currently keep track of the actors currently colliding with each actor. The way we do this is by adding the CollidablePairHandler passed to the InitialCollisionDetected delegate to a list stored on the actor, and removing it in the CollisionEnded delegate. This seems to be unsafe, and I probably ...

There's nothing in the engine specifically geared towards supporting that, but the CollisionRules class can be extended. Including some data reference in a subclass would provide the necessary information to the delegate with some casting. This makes sense, and seems to work perfectly. Thanks! At a...

I'm trying to implement a different collision-filtering system with these basic features: 1) CollisionGroups and CollisionMasks -- A and B only generate a broadphase pair if (A.Group & B.Mask && B.Group & A.Mask). 2) Per-actor ignore collision lists -- A and B only generate a broadph...

The most robust method is to make it a compound shape. A compound collidable's children can have different collision rules, so the bottom detector's collision rules can be set to NoSolver. The EntityConstructionDemo in the BEPUphysicsDemos projects shows a variety of related setups. I've thought ab...

For reference: The box collidable's bounding box is: boundingBox {Min:{X:5.999344 Y:-3.357386 Z:-0.435012} Max:{X:6.999356 Y:-2.357386 Z:0.564999}} Microsoft.Xna.Framework.BoundingBox The two contacts are: {Position: {X:6.505825 Y:-4.145864 Z:0.04420946} Normal: {X:0 Y:1 Z:0} Depth: 3.09532} BEPUphy...

I'm not sure I follow completely. What I'd expect to see in that situation is that the red box will have a pair handler with the mesh, created whenever two collidables have overlapping axis aligned bounding boxes. The blue box, being outside of the mesh's AABB, does not have a pair. But based on th...

We're porting a game to XNA on Windows Phone 7, and running into some issues with collision with level geometry. It's a 2.5D platformer, and the level geometry is specified as a list of vertices/indices, which we read and create a static mesh for at runtime. The level isn't one solid body, though. T...