C++ (Cpp) ParticleSystem::_setLocalZOrder Examples

Example #1

File: CCParticleBatchNode.cpp Project: fiskercui/test

// Reorder will be done in this function, no "lazy" reorder to particles
void ParticleBatchNode::reorderChild(Node * aChild, int zOrder)
{
    CCASSERT( aChild != nullptr, "Child must be non-nullptr");
    CCASSERT( dynamic_cast<ParticleSystem*>(aChild) != nullptr, "CCParticleBatchNode only supports QuadParticleSystems as children");
    CCASSERT( _children.contains(aChild), "Child doesn't belong to batch" );

    ParticleSystem* child = static_cast<ParticleSystem*>(aChild);

    if( zOrder == child->getLocalZOrder() )
    {
        return;
    }

    // no reordering if only 1 child
    if (!_children.empty())
    {
        int newIndex = 0, oldIndex = 0;

        getCurrentIndex(&oldIndex, &newIndex, child, zOrder);

        if( oldIndex != newIndex )
        {

            // reorder _children->array
            child->retain();
            _children.erase(oldIndex);
            _children.insert(newIndex, child);
            child->release();

            // save old altasIndex
            int oldAtlasIndex = child->getAtlasIndex();

            // update atlas index
            updateAllAtlasIndexes();

            // Find new AtlasIndex
            int newAtlasIndex = 0;
            for( int i=0;i < _children.size();i++)
            {
                ParticleSystem* node = static_cast<ParticleSystem*>(_children.at(i));
                if( node == child )
                {
                    newAtlasIndex = child->getAtlasIndex();
                    break;
                }
            }

            // reorder textureAtlas quads
            _textureAtlas->moveQuadsFromIndex(oldAtlasIndex, child->getTotalParticles(), newAtlasIndex);

            child->updateWithNoTime();
        }
    }

    child->_setLocalZOrder(zOrder);
}