Re: How to know if a body is colliding

2022-05-05T15:13:37+00:00

One way to do it is to scan all of the contact manifolds after each step. So something like this:

Code:

void updateContactMap(btCollisionDispatcher* collision_dispatcher) {    int num_manifolds = collision_dispatcher->getNumManifolds();    for (int i = 0; i < num_manifolds; ++i) {        btPersistentManifold* contact_manifold =  collision_dispatcher->getManifoldByIndexInternal(i);        // sometimes you get a manifold with zero contacts so filter for that case        if (contact_manifold->getNumContacts() > 0) {            const btCollisionObject* object_A = contact_manifold->getBody0();                                       const btCollisionObject* object_B = contact_manifold->getBody1();                                       // ... do something        }    }}

Where the collision_dispatcher is the one you gave the btDiscreteDynamicsWorld when you created it.

Statistics: Posted by drleviathan — Thu May 05, 2022 3:13 pm

How to know if a body is colliding

2022-05-01T21:16:43+00:00

Hi,
I am looking for a way to know if a body with a collision shape is having a collision with another collision shape. Is there any method to get the answer as a boolean (True if it has one or several collisions), or a way to get the total number of collisions points?

Statistics: Posted by maiklof — Sun May 01, 2022 9:16 pm

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Re: How to know if a body is colliding

How to know if a body is colliding