per-mesh 引用：MeshRendererComponent.meshIndex（-1=整模型）贯穿渲染收集/物理 Mesh 碰撞（自动跟随）/场景序列化（缺省键向前兼容）/Inspector mesh 下拉

2026-10-09 12:38:05 +08:00
parent 505217ff7e
commit 6854d53f11
5 changed files with 72 additions and 5 deletions
@@ -739,6 +739,40 @@ void InspectorPanel::Draw(const EditorContext& ctx, entt::entity selected)
                if (const Engine::Model* model = ctx.assets->GetModel(mr->model);
                    model != nullptr)
                {
+                    // 单 mesh 子引用下拉（-1 = 整模型全部）：名字用
+                    // GetMeshMaterialInfos（材质名优先，空回退 Slot N）
+                    {
+                        const auto& infos = model->GetMeshMaterialInfos();
+                        const int sel = mr->meshIndex + 1;   // 0 = All
+                        std::string preview = "All meshes";
+                        if (sel > 0 &&
+                            static_cast<size_t>(sel - 1) < infos.size()) {
+                            preview = infos[static_cast<size_t>(sel) - 1]
+                                          .name.empty()
+                                ? "Slot " + std::to_string(sel - 1)
+                                : infos[static_cast<size_t>(sel) - 1].name;
+                        }
+                        if (ImGui::BeginCombo("mesh", preview.c_str()))
+                        {
+                            if (ImGui::Selectable("All meshes", sel <= 0)) {
+                                mr->meshIndex = -1;
+                            }
+                            for (size_t i = 0; i < infos.size(); ++i)
+                            {
+                                const std::string label =
+                                    (infos[i].name.empty()
+                                         ? "Slot " + std::to_string(i)
+                                         : infos[i].name) +
+                                    "##" + std::to_string(i);
+                                const bool cur =
+                                    mr->meshIndex == static_cast<int>(i);
+                                if (ImGui::Selectable(label.c_str(), cur)) {
+                                    mr->meshIndex = static_cast<int>(i);
+                                }
+                            }
+                            ImGui::EndCombo();
+                        }
+                    }
                    const auto& clips = model->GetClips();
                    if (model->GetMeshes().empty())
                    {