void PhysicalEntitySimulation::removeEntityInternal(EntityItemPointer entity) {
EntityMotionState* motionState = static_cast<EntityMotionState*>(entity->getPhysicsInfo());
if (motionState) {
motionState->clearObjectBackPointer();
entity->setPhysicsInfo(nullptr);
_pendingRemoves.insert(motionState);
_outgoingChanges.remove(motionState);
}
_pendingAdds.remove(entity);
}
VectorOfMotionStates& PhysicalEntitySimulation::getObjectsToDelete() {
_tempVector.clear();
for (auto stateItr : _pendingRemoves) {
EntityMotionState* motionState = &(*stateItr);
_pendingChanges.remove(motionState);
_physicalObjects.remove(motionState);
EntityItemPointer entity = motionState->getEntity();
if (entity) {
_pendingAdds.remove(entity);
entity->setPhysicsInfo(nullptr);
motionState->clearObjectBackPointer();
}
_tempVector.push_back(motionState);
}
_pendingRemoves.clear();
return _tempVector;
}
void PhysicalEntitySimulation::clearEntitiesInternal() {
// TODO: we should probably wait to lock the _physicsEngine so we don't mess up data structures
// while it is in the middle of a simulation step. As it is, we're probably in shutdown mode
// anyway, so maybe the simulation was already properly shutdown? Cross our fingers...
// first disconnect each MotionStates from its Entity
for (auto stateItr : _physicalObjects) {
EntityMotionState* motionState = static_cast<EntityMotionState*>(&(*stateItr));
EntityItemPointer entity = motionState->getEntity();
if (entity) {
entity->setPhysicsInfo(nullptr);
}
motionState->clearObjectBackPointer();
}
// then delete the objects (aka MotionStates)
_physicsEngine->deleteObjects(_physicalObjects);
// finally clear all lists (which now have only dangling pointers)
_physicalObjects.clear();
_pendingRemoves.clear();
_pendingAdds.clear();
_pendingChanges.clear();
}
