C++ EntityItemPointer::needsToCallUpdate方法代码示例

void EntitySimulation::changeEntity(EntityItemPointer entity) {
    assert(entity);
    if (!entity->_simulated) {
        // This entity was either never added to the simulation or has been removed
        // (probably for pending delete), so we don't want to keep a pointer to it 
        // on any internal lists.
        return;
    }

    // Although it is not the responsibility of the EntitySimulation to sort the tree for EXTERNAL changes
    // it IS responsibile for triggering deletes for entities that leave the bounds of the domain, hence 
    // we must check for that case here, however we rely on the change event to have set DIRTY_POSITION flag.
    bool wasRemoved = false;
    uint32_t dirtyFlags = entity->getDirtyFlags();
    if (dirtyFlags & EntityItem::DIRTY_POSITION) {
        AACube domainBounds(glm::vec3(0.0f,0.0f,0.0f), (float)TREE_SCALE);
        AACube newCube = entity->getMaximumAACube();
        if (!domainBounds.touches(newCube)) {
            qCDebug(entities) << "Entity " << entity->getEntityItemID() << " moved out of domain bounds.";
            _entitiesToDelete.insert(entity);
            _mortalEntities.remove(entity);
            _entitiesToUpdate.remove(entity);
            _entitiesToSort.remove(entity);
            _simpleKinematicEntities.remove(entity);
            removeEntityInternal(entity);
            entity->_simulated = false;
            wasRemoved = true;
        }
    }
    if (!wasRemoved) {
        if (dirtyFlags & EntityItem::DIRTY_LIFETIME) {
            if (entity->isMortal()) {
                _mortalEntities.insert(entity);
                quint64 expiry = entity->getExpiry();
                if (expiry < _nextExpiry) {
                    _nextExpiry = expiry;
                }
            } else {
                _mortalEntities.remove(entity);
            }
            entity->clearDirtyFlags(EntityItem::DIRTY_LIFETIME);
        }
        if (entity->needsToCallUpdate()) {
            _entitiesToUpdate.insert(entity);
        } else {
            _entitiesToUpdate.remove(entity);
        }
        changeEntityInternal(entity);
    }
}

// protected
void EntitySimulation::callUpdateOnEntitiesThatNeedIt(const quint64& now) {
    PerformanceTimer perfTimer("updatingEntities");
    SetOfEntities::iterator itemItr = _entitiesToUpdate.begin();
    while (itemItr != _entitiesToUpdate.end()) {
        EntityItemPointer entity = *itemItr;
        // TODO: catch transition from needing update to not as a "change" 
        // so we don't have to scan for it here.
        if (!entity->needsToCallUpdate()) {
            itemItr = _entitiesToUpdate.erase(itemItr);
        } else {
            entity->update(now);
            ++itemItr;
        }
    }
}

void EntitySimulation::addEntity(EntityItemPointer entity) {
    assert(entity);
    entity->deserializeActions();
    if (entity->isMortal()) {
        _mortalEntities.insert(entity);
        quint64 expiry = entity->getExpiry();
        if (expiry < _nextExpiry) {
            _nextExpiry = expiry;
        }
    }
    if (entity->needsToCallUpdate()) {
        _entitiesToUpdate.insert(entity);
    }
    addEntityInternal(entity);

    _allEntities.insert(entity);
    entity->_simulated = true;

    // DirtyFlags are used to signal changes to entities that have already been added, 
    // so we can clear them for this entity which has just been added.
    entity->clearDirtyFlags();
}