Extend GC stage and TUMO parsing

include/gc/TumoModel.hpp

@@ -17,9 +17,11 @@ struct TumoGeometry {
     std::vector<TumoVertex> triangles;
     std::vector<TumoVertex> solidLines;
     std::vector<TumoVertex> wireframeLines;
+    std::uint32_t meshCount = 0;
+    std::uint32_t nodeCount = 0;
 };
 
-// Decodes the common one-mesh TUMO layout used by gameplay stage objects.
+// Decodes and aggregates every static TUMO mesh used by gameplay stage objects.
 // Polygon fans are expanded on the host so the PSP only has to submit flat
 // GU_TRIANGLES/GU_LINES arrays.
 bool LoadTumoGeometry(const std::string& path, TumoGeometry* out, std::string* error);