Hierachy

    void SceneHierarchyPanel::SetSelectedEntity(Entity entity)
    {
        m_SelectionContext = entity;
    }

EditorLayer

悬停+按下左键+没有按左alt+没有被gizmo覆盖，选中

    bool EditorLayer::OnMouseButtonPressed(MouseButtonPressedEvent& e)
    {
        if (e.GetMouseButton() == Mouse::ButtonLeft)
        {
            if (m_ViewportHovered && !ImGuizmo::IsOver() && !Input::IsKeyPressed(Key::LeftAlt))
                m_SceneHierarchyPanel.SetSelectedEntity(m_HoveredEntity);
        }
        return false;
    }