Ogre::SceneNode *TutorialApplication::loadBSP(std::shared_ptr<l2p::UModel> m, bool ignoreNonVisible) {
l2p::Name name = m->package->name;
std::vector<float> vertex_data;
std::vector<uint32_t> index_buf;
l2p::Box bounds;
// Build vertex and index buffer.
for (auto ni = m->nodes.begin(), ne = m->nodes.end(); ni != ne; ++ni) {
l2p::BSPNode &n = *ni;
l2p::BSPSurface &s = m->surfaces[n.surface];
if (ignoreNonVisible && ignoreNode(m.get(), n, s))
continue;
uint32_t vert_start = vertex_data.size() / 8;
const Ogre::Vector3 uvec = ogre_cast(m->vectors[s.U]);
const Ogre::Vector3 vvec = ogre_cast(m->vectors[s.V]);
const Ogre::Vector3 base = ogre_cast(m->points[s.base]);
int usize = 0;
int vsize = 0;
std::shared_ptr<l2p::UTexture> mat = s.material;
if (mat) {
usize = mat->USize;
vsize = mat->VSize;
}
if (usize == 0 || vsize == 0)
usize = vsize = 64;
// Vertex buffer.
if (n.num_verticies > 0) {
l2p::Vector Normal = m->vectors[s.normal];
for (uint32_t vert_index = 0; vert_index < n.num_verticies; ++vert_index) {
const l2p::Vector &pos = m->points[m->vertexes[n.vert_pool + vert_index].vertex];
const Ogre::Vector3 dist(ogre_cast(pos) - base);
const Ogre::Vector2 tcoord((dist | uvec) / float(usize), (dist | vvec) / float(vsize));
bounds += pos;
vertex_data.push_back(pos.X);
vertex_data.push_back(pos.Y);
vertex_data.push_back(pos.Z);
vertex_data.push_back(Normal.X);
vertex_data.push_back(Normal.Y);
vertex_data.push_back(Normal.Z);
vertex_data.push_back(tcoord.x);
vertex_data.push_back(tcoord.y);
}
if (s.flags & l2p::PF_TwoSided) {
for (uint32_t vert_index = 0; vert_index < n.num_verticies; ++vert_index) {
const l2p::Vector &pos = m->points[m->vertexes[n.vert_pool + vert_index].vertex];
const Ogre::Vector3 dist(ogre_cast(pos) - base);
const Ogre::Vector2 tcoord((dist | uvec) / float(usize), (dist | vvec) / float(vsize));
vertex_data.push_back(pos.X);
vertex_data.push_back(pos.Y);
vertex_data.push_back(pos.Z);
vertex_data.push_back(Normal.X);
vertex_data.push_back(Normal.Y);
vertex_data.push_back(-Normal.Z);
vertex_data.push_back(tcoord.x);
vertex_data.push_back(tcoord.y);
}
}
}
// Index buffer.
for (int verti = 2; verti < n.num_verticies; ++verti) {
index_buf.push_back(vert_start);
index_buf.push_back(vert_start + verti - 1);
index_buf.push_back(vert_start + verti);
}
if (s.flags & l2p::PF_TwoSided) {
for (int verti = 2; verti < n.num_verticies; ++verti) {
index_buf.push_back(vert_start);
index_buf.push_back(vert_start + verti);
index_buf.push_back(vert_start + verti - 1);
}
}
}
if (vertex_data.size() == 0 || index_buf.size() == 0)
return nullptr;
Ogre::MeshPtr mesh = Ogre::MeshManager::getSingleton().createManual(Ogre::String(name) + Ogre::String(m->name), "General");
Ogre::VertexData *data = new Ogre::VertexData();
mesh->sharedVertexData = data;
data->vertexCount = vertex_data.size() / 8;
Ogre::VertexDeclaration *decl = data->vertexDeclaration;
uint32_t offset = 0;
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_NORMAL);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
decl->addElement(0, offset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT2);
Ogre::HardwareVertexBufferSharedPtr vbuf =
Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(
offset,
data->vertexCount,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
vbuf->writeData(0, vbuf->getSizeInBytes(), &vertex_data.front(), true);
data->vertexBufferBinding->setBinding(0, vbuf);
// Setup index buffer.
Ogre::HardwareIndexBufferSharedPtr ibuf =
Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(
Ogre::HardwareIndexBuffer::IT_32BIT,
index_buf.size(),
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
ibuf->writeData(0, ibuf->getSizeInBytes(), &index_buf.front(), true);
Ogre::SubMesh *subMesh = mesh->createSubMesh();
subMesh->useSharedVertices = true;
subMesh->indexData->indexBuffer = ibuf;
subMesh->indexData->indexCount = index_buf.size();
subMesh->indexData->indexStart = 0;
mesh->_setBounds(Ogre::AxisAlignedBox(bounds.min.X, bounds.min.Y, bounds.min.Z, bounds.max.X, bounds.max.Y, bounds.max.Z));
mesh->_setBoundingSphereRadius((std::max(bounds.max.X - bounds.min.X, std::max(bounds.max.Y - bounds.min.Y, bounds.max.Z - bounds.min.Z))) / 2.0);
mesh->load();
Ogre::Entity *ent = mSceneMgr->createEntity(Ogre::String(name) + Ogre::String(m->name) + "E", Ogre::String(name) + Ogre::String(m->name));
ent->setUserAny(Ogre::Any(static_cast<l2p::UObject*>(m.get())));
ent->setMaterialName("StaticMesh/Default");
Ogre::SceneNode *node = mUnrealCordNode->createChildSceneNode();
node->attachObject(ent);
return node;
}
void TSShapeLoader::recurseSubshape(AppNode* appNode, S32 parentIndex, bool recurseChildren)
{
// Ignore local bounds nodes
if (appNode->isBounds())
return;
S32 subShapeNum = shape->subShapeFirstNode.size()-1;
Subshape* subshape = subshapes[subShapeNum];
// Check if we should collapse this node
S32 myIndex;
if (ignoreNode(appNode->getName()))
{
myIndex = parentIndex;
}
else
{
// Check that adding this node will not exceed the maximum node count
if (shape->nodes.size() >= MAX_TS_SET_SIZE)
return;
myIndex = shape->nodes.size();
String nodeName = getUniqueName(appNode->getName(), cmpShapeName, shape->names);
// Create the 3space node
shape->nodes.increment();
shape->nodes.last().nameIndex = shape->addName(nodeName);
shape->nodes.last().parentIndex = parentIndex;
shape->nodes.last().firstObject = -1;
shape->nodes.last().firstChild = -1;
shape->nodes.last().nextSibling = -1;
// Add the AppNode to a matching list (so AppNodes can be accessed using 3space
// node indices)
appNodes.push_back(appNode);
appNodes.last()->mParentIndex = parentIndex;
// Check for NULL detail or AutoBillboard nodes (no children or geometry)
if ((appNode->getNumChildNodes() == 0) &&
(appNode->getNumMesh() == 0))
{
S32 size = 0x7FFFFFFF;
String dname(String::GetTrailingNumber(appNode->getName(), size));
if (dStrEqual(dname, "nulldetail") && (size != 0x7FFFFFFF))
{
shape->addDetail("detail", size, subShapeNum);
}
else if (appNode->isBillboard() && (size != 0x7FFFFFFF))
{
// AutoBillboard detail
S32 numEquatorSteps = 4;
S32 numPolarSteps = 0;
F32 polarAngle = 0.0f;
S32 dl = 0;
S32 dim = 64;
bool includePoles = true;
appNode->getInt("BB::EQUATOR_STEPS", numEquatorSteps);
appNode->getInt("BB::POLAR_STEPS", numPolarSteps);
appNode->getFloat("BB::POLAR_ANGLE", polarAngle);
appNode->getInt("BB::DL", dl);
appNode->getInt("BB::DIM", dim);
appNode->getBool("BB::INCLUDE_POLES", includePoles);
S32 detIndex = shape->addDetail( "bbDetail", size, -1 );
shape->details[detIndex].bbEquatorSteps = numEquatorSteps;
shape->details[detIndex].bbPolarSteps = numPolarSteps;
shape->details[detIndex].bbDetailLevel = dl;
shape->details[detIndex].bbDimension = dim;
shape->details[detIndex].bbIncludePoles = includePoles;
shape->details[detIndex].bbPolarAngle = polarAngle;
}
}
}
// Collect geometry
for (U32 iMesh = 0; iMesh < appNode->getNumMesh(); iMesh++)
{
AppMesh* mesh = appNode->getMesh(iMesh);
if (!ignoreMesh(mesh->getName()))
{
subshape->objMeshes.push_back(mesh);
subshape->objNodes.push_back(mesh->isSkin() ? -1 : myIndex);
}
}
// Create children
if (recurseChildren)
{
for (int iChild = 0; iChild < appNode->getNumChildNodes(); iChild++)
recurseSubshape(appNode->getChildNode(iChild), myIndex, true);
}
}
