Fixed empty model with mesh geometry

Author: eduardodoria

editor/Factory.cpp

@@ -740,9 +740,14 @@ std::string editor::Factory::createMeshComponent(int indentSpaces, EntityRegistr
         }
     }
 
-    // Skip inlining raw buffer/index data for model-backed meshes; the model
-    // loader will repopulate the buffers at runtime from the source file.
-    const bool hasModel = scene->findComponent<ModelComponent>(entity);
+    // Skip inlining raw buffer/index data only for meshes backed by a model
+    // file; the model loader will repopulate the buffers at runtime from the
+    // source file. A ModelComponent with an empty filename loads no geometry,
+    // so the mesh data must still be serialized to remain visible.
+    bool hasModel = false;
+    if (scene->findComponent<ModelComponent>(entity)) {
+        hasModel = !scene->getComponent<ModelComponent>(entity).filename.empty();
+    }
 
     if (!hasModel && mesh.buffer.getSize() > 0){
         code << ind << "mesh.buffer.clearAll();\n";

editor/Stream.cpp

@@ -2406,7 +2406,14 @@ YAML::Node editor::Stream::encodeComponents(const Entity entity, const EntityReg
     }
 
     if (signature.test(registry->getComponentId<MeshComponent>())) {
-        const bool isModel = signature.test(registry->getComponentId<ModelComponent>());
+        // Only treat the mesh as model-backed (and skip encoding its buffers and
+        // embedded textures) when the ModelComponent has a source file that will
+        // regenerate them at runtime. An empty filename loads no geometry, so the
+        // mesh data must still be encoded to remain visible.
+        bool isModel = false;
+        if (signature.test(registry->getComponentId<ModelComponent>())) {
+            isModel = !registry->getComponent<ModelComponent>(entity).filename.empty();
+        }
         MeshComponent mesh = registry->getComponent<MeshComponent>(entity);
         compNode[Catalog::getComponentName(ComponentType::MeshComponent, true)] = encodeMeshComponent(mesh, !isModel, !isModel);
     }