void Shields::ReparentShieldNodes(SceneGraph::Model* model)
{
assert(s_initialised);
Graphics::Renderer *renderer = model->GetRenderer();
using SceneGraph::Node;
using SceneGraph::Group;
using SceneGraph::MatrixTransform;
using SceneGraph::StaticGeometry;
//This will find all matrix transforms meant for navlights.
SceneGraph::FindNodeVisitor shieldFinder(SceneGraph::FindNodeVisitor::MATCH_NAME_ENDSWITH, "_shield");
model->GetRoot()->Accept(shieldFinder);
const std::vector<Node*> &results = shieldFinder.GetResults();
//Move shield geometry to same level as the LODs
for (unsigned int i = 0; i < results.size(); i++) {
MatrixTransform *mt = dynamic_cast<MatrixTransform*>(results.at(i));
assert(mt);
const Uint32 NumChildren = mt->GetNumChildren();
if (NumChildren>0)
{
// Group to contain all of the shields we might find
Group *shieldGroup = new Group(renderer);
shieldGroup->SetName(s_shieldGroupName);
// go through all of this MatrixTransforms children to extract all of the shield meshes
for (Uint32 iChild = 0; iChild < NumChildren; ++iChild) {
Node* node = mt->GetChildAt(iChild);
assert(node);
if (node)
{
RefCountedPtr<StaticGeometry> sg(dynamic_cast<StaticGeometry*>(node));
assert(sg.Valid());
sg->SetNodeMask(SceneGraph::NODE_TRANSPARENT);
// We can early-out if we've already processed this models scenegraph.
if (Graphics::BLEND_ALPHA == sg->m_blendMode) {
assert(false);
}
// force the blend mode
sg->m_blendMode = Graphics::BLEND_ALPHA;
Graphics::RenderStateDesc rsd;
rsd.blendMode = Graphics::BLEND_ALPHA;
rsd.depthWrite = false;
sg->SetRenderState(renderer->CreateRenderState(rsd));
for (Uint32 iMesh = 0; iMesh < sg->GetNumMeshes(); ++iMesh) {
StaticGeometry::Mesh &rMesh = sg->GetMeshAt(iMesh);
rMesh.material = GetGlobalShieldMaterial();
}
// find the accumulated transform from the root to our node
MatrixAccumVisitor mav(mt->GetName());
model->GetRoot()->Accept(mav);
// set our nodes transformation to be the accumulated transform
MatrixTransform *sg_transform_parent = new MatrixTransform(renderer, mav.outMat);
std::stringstream nodeStream;
nodeStream << iChild << s_matrixTransformName;
sg_transform_parent->SetName(nodeStream.str());
sg_transform_parent->AddChild(sg.Get());
// dettach node from current location in the scenegraph...
mt->RemoveChild(node);
// attach new transform node which parents the our shields mesh to the shield group.
shieldGroup->AddChild(sg_transform_parent);
}
}
model->GetRoot()->AddChild(shieldGroup);
}
}
}
