loader: work toward removing duplicate atlas code

1 files changed, 25 insertions, 0 deletions

diff --git a/loader/ground-traits.hpp b/loader/ground-traits.hpp
new file mode 100644
index 00000000..56923cd0
--- /dev/null
+++ b/loader/ground-traits.hpp
@@ -0,0 +1,25 @@
+#pragma once
+#include "atlas-loader-fwd.hpp"
+#include <memory>
+
+namespace floormat { struct ground_cell; class ground_atlas; }
+
+namespace floormat::loader_detail {
+
+template<> struct atlas_loader_traits<ground_atlas>
+{
+    using Atlas = ground_atlas;
+    using Cell = ground_cell;       // convertible to atlas and holding the atlas
+    using Self = atlas_loader_traits<ground_atlas>;
+    using Storage = atlas_storage<ground_atlas, Self>;
+
+    static StringView loader_name();
+    static const std::shared_ptr<Atlas>& atlas_of(const Cell& x);
+    static StringView name_of(const Cell& x);
+    static StringView name_of(const Atlas& x);
+    static void ensure_atlases_loaded(Storage& st);
+    static const Cell& make_invalid_atlas(Storage& st);
+    static std::shared_ptr<Atlas> make_atlas(StringView name, const Cell& c);
+};
+
+} // namespace floormat::loader_detail