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put PhysicsEngine::bump back in. some things get missed if we just set the one thing active

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This commit is contained in:
Seth Alves 2015-04-22 18:53:49 -07:00
parent d51f5a0ae8
commit 4ca076ed94
2 changed files with 43 additions and 1 deletions
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43
libraries/physics/src/PhysicsEngine.cpp
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@ -529,12 +529,53 @@ void PhysicsEngine::addObject(const ShapeInfo& shapeInfo, btCollisionShape* shap
motionState->resetMeasuredAcceleration();
}
void PhysicsEngine::bump(EntityItem* bumpEntity) {
// If this node is doing something like deleting an entity, scan for contacts involving the
// entity. For each found, flag the other entity involved as being simulated by this node.
lock();
int numManifolds = _collisionDispatcher->getNumManifolds();
for (int i = 0; i < numManifolds; ++i) {
btPersistentManifold* contactManifold = _collisionDispatcher->getManifoldByIndexInternal(i);
if (contactManifold->getNumContacts() > 0) {
const btCollisionObject* objectA = static_cast<const btCollisionObject*>(contactManifold->getBody0());
const btCollisionObject* objectB = static_cast<const btCollisionObject*>(contactManifold->getBody1());
if (objectA && objectB) {
void* a = objectA->getUserPointer();
void* b = objectB->getUserPointer();
if (a && b) {
EntityItem* entityA = a ? static_cast<EntityMotionState*>(a)->getEntity() : NULL;
EntityItem* entityB = b ? static_cast<EntityMotionState*>(b)->getEntity() : NULL;
if (entityA && entityB) {
if (entityA == bumpEntity) {
entityB->setShouldClaimSimulationOwnership(true);
if (!objectB->isActive()) {
objectB->setActivationState(ACTIVE_TAG);
}
}
if (entityB == bumpEntity) {
entityA->setShouldClaimSimulationOwnership(true);
if (!objectA->isActive()) {
objectA->setActivationState(ACTIVE_TAG);
}
}
}
}
}
}
}
unlock();
}
void PhysicsEngine::removeObjectFromBullet(ObjectMotionState* motionState) {
assert(motionState);
btRigidBody* body = motionState->getRigidBody();
// set the about-to-be-deleted entity active in order to wake up the island it's part of. this is done
// so that anything resting on top of it will fall.
body->setActivationState(ACTIVE_TAG);
// body->setActivationState(ACTIVE_TAG);
EntityItem* entity = static_cast<EntityMotionState*>(motionState)->getEntity();
bump(entity);
if (body) {
const btCollisionShape* shape = body->getCollisionShape();
_dynamicsWorld->removeRigidBody(body);

1
libraries/physics/src/PhysicsEngine.h
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@ -98,6 +98,7 @@ private:
// return 'true' of update was successful
bool updateObjectHard(btRigidBody* body, ObjectMotionState* motionState, uint32_t flags);
void updateObjectEasy(btRigidBody* body, ObjectMotionState* motionState, uint32_t flags);
void bump(EntityItem* bumpEntity);
btClock _clock;
btDefaultCollisionConfiguration* _collisionConfig = NULL;