wsScene::wsScene(vec4 myGravity) {
gravity = myGravity;
cameras = wsNew(wsHashMap<wsCamera*>, wsHashMap<wsCamera*>(WS_MAX_CAMERAS));
models = wsNew(wsHashMap<wsModel*>, wsHashMap<wsModel*>(WS_MAX_MODELS));
primitives = wsNewArray(wsPrimitive*, WS_MAX_PRIMITIVES);
// Instantiate physics engine
#if WS_PHYSICS_BACKEND == WS_BACKEND_BULLET
rigidBodies = wsNew(wsHashMap<btRigidBody*>, wsHashMap<btRigidBody*>(WS_MAX_MODELS));
broadphase = wsNew(btDbvtBroadphase, btDbvtBroadphase());
collisionConfig = wsNew(btDefaultCollisionConfiguration, btDefaultCollisionConfiguration());
dispatcher = wsNew(btCollisionDispatcher, btCollisionDispatcher(collisionConfig));
solver = wsNew(btSequentialImpulseConstraintSolver, btSequentialImpulseConstraintSolver());
physicsWorld = wsNew(btDiscreteDynamicsWorld, btDiscreteDynamicsWorld(dispatcher, broadphase, solver, collisionConfig));
physicsWorld->setGravity(btVector3(gravity.x, gravity.y, gravity.z));
#endif
numPrimitives = 0;
}
bool BulletPhysics::Initialize()
{
LoadXml();
// this object controls bullet SDK's internal memory management during collision pass
m_CollisionConfiguration.reset(CB_NEW btDefaultCollisionConfiguration);
// this manages how bullet detects precise collisions between pairs of objects
m_Dispatcher.reset(CB_NEW btCollisionDispatcher(m_CollisionConfiguration.get()));
// used to quickly detect collisions between object, imprecisely.
// if a collision passes this phase it will be passed to the dispatcher
m_Broadphase.reset(CB_NEW btDbvtBroadphase);
m_Solver.reset(CB_NEW btSequentialImpulseConstraintSolver);
// this is the main interface point for the physics world
m_DynamicsWorld.reset(CB_NEW btDiscreteDynamicsWorld(m_Dispatcher.get(),
m_Broadphase.get(), m_Solver.get(), m_CollisionConfiguration.get()));
m_DebugDrawer.reset(CB_NEW BulletDebugDrawer);
m_DebugDrawer->ReadOptions();
if (!m_CollisionConfiguration || !m_Dispatcher || !m_Broadphase || !m_Solver
|| !m_DynamicsWorld /*|| !m_DebugDrawer*/)
{
CB_ERROR("BulletPhysics::Initialize failed");
return false;
}
m_DynamicsWorld->setDebugDrawer(m_DebugDrawer.get());
// set internal tick callback to our own method
m_DynamicsWorld->setInternalTickCallback(BulletPhysics::BulletInternalTickCallback);
m_DynamicsWorld->setWorldUserInfo(this);
return true;
}
