void NavigationMesh::GetTileGeometry(NavBuildData* build, Vector<NavigationGeometryInfo>& geometryList, BoundingBox& box)
{
Matrix3x4 inverse = node_->GetWorldTransform().Inverse();
for (unsigned i = 0; i < geometryList.Size(); ++i)
{
if (box.IsInsideFast(geometryList[i].boundingBox_) != OUTSIDE)
{
const Matrix3x4& transform = geometryList[i].transform_;
if (geometryList[i].component_->GetType() == OffMeshConnection::GetTypeStatic())
{
OffMeshConnection* connection = static_cast<OffMeshConnection*>(geometryList[i].component_);
Vector3 start = inverse * connection->GetNode()->GetWorldPosition();
Vector3 end = inverse * connection->GetEndPoint()->GetWorldPosition();
build->offMeshVertices_.Push(start);
build->offMeshVertices_.Push(end);
build->offMeshRadii_.Push(connection->GetRadius());
build->offMeshFlags_.Push((unsigned short)connection->GetMask());
build->offMeshAreas_.Push((unsigned char)connection->GetAreaID());
build->offMeshDir_.Push((unsigned char)(connection->IsBidirectional() ? DT_OFFMESH_CON_BIDIR : 0));
continue;
}
else if (geometryList[i].component_->GetType() == NavArea::GetTypeStatic())
{
NavArea* area = static_cast<NavArea*>(geometryList[i].component_);
NavAreaStub stub;
stub.areaID_ = (unsigned char)area->GetAreaID();
stub.bounds_ = area->GetWorldBoundingBox();
build->navAreas_.Push(stub);
continue;
}
#ifdef ATOMIC_PHYSICS
CollisionShape* shape = dynamic_cast<CollisionShape*>(geometryList[i].component_);
if (shape)
{
switch (shape->GetShapeType())
{
case SHAPE_TRIANGLEMESH:
{
Model* model = shape->GetModel();
if (!model)
continue;
unsigned lodLevel = shape->GetLodLevel();
for (unsigned j = 0; j < model->GetNumGeometries(); ++j)
AddTriMeshGeometry(build, model->GetGeometry(j, lodLevel), transform);
}
break;
case SHAPE_CONVEXHULL:
{
ConvexData* data = static_cast<ConvexData*>(shape->GetGeometryData());
if (!data)
continue;
unsigned numVertices = data->vertexCount_;
unsigned numIndices = data->indexCount_;
unsigned destVertexStart = build->vertices_.Size();
for (unsigned j = 0; j < numVertices; ++j)
build->vertices_.Push(transform * data->vertexData_[j]);
for (unsigned j = 0; j < numIndices; ++j)
build->indices_.Push(data->indexData_[j] + destVertexStart);
}
break;
case SHAPE_BOX:
{
unsigned destVertexStart = build->vertices_.Size();
build->vertices_.Push(transform * Vector3(-0.5f, 0.5f, -0.5f));
build->vertices_.Push(transform * Vector3(0.5f, 0.5f, -0.5f));
build->vertices_.Push(transform * Vector3(0.5f, -0.5f, -0.5f));
build->vertices_.Push(transform * Vector3(-0.5f, -0.5f, -0.5f));
build->vertices_.Push(transform * Vector3(-0.5f, 0.5f, 0.5f));
build->vertices_.Push(transform * Vector3(0.5f, 0.5f, 0.5f));
build->vertices_.Push(transform * Vector3(0.5f, -0.5f, 0.5f));
build->vertices_.Push(transform * Vector3(-0.5f, -0.5f, 0.5f));
const unsigned indices[] = {
0, 1, 2, 0, 2, 3, 1, 5, 6, 1, 6, 2, 4, 5, 1, 4, 1, 0, 5, 4, 7, 5, 7, 6,
4, 0, 3, 4, 3, 7, 1, 0, 4, 1, 4, 5
};
for (unsigned j = 0; j < 36; ++j)
build->indices_.Push(indices[j] + destVertexStart);
}
break;
default:
break;
}
continue;
}
#endif
Drawable* drawable = dynamic_cast<Drawable*>(geometryList[i].component_);
if (drawable)
{
const Vector<SourceBatch>& batches = drawable->GetBatches();
for (unsigned j = 0; j < batches.Size(); ++j)
AddTriMeshGeometry(build, drawable->GetLodGeometry(j, geometryList[i].lodLevel_), transform);
}
}
}
}
void NavigationMesh::CollectGeometries(Vector<NavigationGeometryInfo>& geometryList, Node* node, HashSet<Node*>& processedNodes,
bool recursive)
{
// Make sure nodes are not included twice
if (processedNodes.Contains(node))
return;
// Exclude obstacles and crowd agents from consideration
if (node->HasComponent<Obstacle>() || node->HasComponent<CrowdAgent>())
return;
processedNodes.Insert(node);
Matrix3x4 inverse = node_->GetWorldTransform().Inverse();
#ifdef ATOMIC_PHYSICS
// Prefer compatible physics collision shapes (triangle mesh, convex hull, box) if found.
// Then fallback to visible geometry
PODVector<CollisionShape*> collisionShapes;
node->GetComponents<CollisionShape>(collisionShapes);
bool collisionShapeFound = false;
for (unsigned i = 0; i < collisionShapes.Size(); ++i)
{
CollisionShape* shape = collisionShapes[i];
if (!shape->IsEnabledEffective())
continue;
ShapeType type = shape->GetShapeType();
if ((type == SHAPE_BOX || type == SHAPE_TRIANGLEMESH || type == SHAPE_CONVEXHULL) && shape->GetCollisionShape())
{
Matrix3x4 shapeTransform(shape->GetPosition(), shape->GetRotation(), shape->GetSize());
NavigationGeometryInfo info;
info.component_ = shape;
info.transform_ = inverse * node->GetWorldTransform() * shapeTransform;
info.boundingBox_ = shape->GetWorldBoundingBox().Transformed(inverse);
geometryList.Push(info);
collisionShapeFound = true;
}
}
if (!collisionShapeFound)
#endif
{
PODVector<Drawable*> drawables;
node->GetDerivedComponents<Drawable>(drawables);
for (unsigned i = 0; i < drawables.Size(); ++i)
{
/// \todo Evaluate whether should handle other types. Now StaticModel & TerrainPatch are supported, others skipped
Drawable* drawable = drawables[i];
if (!drawable->IsEnabledEffective())
continue;
NavigationGeometryInfo info;
if (drawable->GetType() == StaticModel::GetTypeStatic())
info.lodLevel_ = static_cast<StaticModel*>(drawable)->GetOcclusionLodLevel();
else if (drawable->GetType() == TerrainPatch::GetTypeStatic())
info.lodLevel_ = 0;
else
continue;
info.component_ = drawable;
info.transform_ = inverse * node->GetWorldTransform();
info.boundingBox_ = drawable->GetWorldBoundingBox().Transformed(inverse);
geometryList.Push(info);
}
}
if (recursive)
{
const Vector<SharedPtr<Node> >& children = node->GetChildren();
for (unsigned i = 0; i < children.Size(); ++i)
CollectGeometries(geometryList, children[i], processedNodes, recursive);
}
}