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using an infinite plane for the ground

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Andrew Meadows 2014-12-03 20:17:42 -08:00
parent 85e7c6166b
commit d6c97be78e
1 changed files with 12 additions and 13 deletions
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25
libraries/physics/src/PhysicsEngine.cpp
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@ -147,22 +147,21 @@ void PhysicsEngine::init() {
// TODO: set up gravity zones // TODO: set up gravity zones
_dynamicsWorld->setGravity(btVector3(0.0f, 0.0f, 0.0f)); _dynamicsWorld->setGravity(btVector3(0.0f, 0.0f, 0.0f));
// GROUND HACK: In the meantime we add a big planar floor to catch falling objects // GROUND HACK: add a big planar floor (and walls for testing) to catch falling objects
// NOTE: we don't care about memory leaking groundShape and groundObject -->
// they'll exist until the executable exits.
const float halfSide = 200.0f;
const float halfHeight = 1.0f;
btCollisionShape* groundShape = new btBoxShape(btVector3(halfSide, halfHeight, halfSide));
btTransform groundTransform; btTransform groundTransform;
groundTransform.setIdentity(); groundTransform.setIdentity();
groundTransform.setOrigin(btVector3(halfSide, -halfHeight, halfSide)); for (int i = 0; i < 3; ++i) {
btVector3 normal(0.0f, 0.0f, 0.0f);
normal[i] = 1.0f;
btCollisionShape* plane = new btStaticPlaneShape(normal, 0.0f);
btCollisionObject* groundObject = new btCollisionObject(); btCollisionObject* groundObject = new btCollisionObject();
groundObject->setCollisionFlags(btCollisionObject::CF_STATIC_OBJECT); groundObject->setCollisionFlags(btCollisionObject::CF_STATIC_OBJECT);
groundObject->setCollisionShape(groundShape); groundObject->setCollisionShape(plane);
groundObject->setWorldTransform(groundTransform);
_dynamicsWorld->addCollisionObject(groundObject); groundObject->setWorldTransform(groundTransform);
_dynamicsWorld->addCollisionObject(groundObject);
}
} }
} }