1 files changed, 61 insertions, 0 deletions
diff --git a/loader/atlas.cpp b/loader/atlas.cpp
new file mode 100644
index 00000000..4a5c6cfa
--- /dev/null
+++ b/loader/atlas.cpp
@@ -0,0 +1,61 @@
+#include "impl.hpp"
+#include "compat/assert.hpp"
+#include "src/emplacer.hpp"
+#include "src/tile-atlas.hpp"
+#include "src/anim-atlas.hpp"
+#include <Corrade/Containers/ArrayViewStl.h>
+#include <Corrade/Containers/Pair.h>
+#include <Corrade/Containers/StringView.h>
+#include <Corrade/Utility/Path.h>
+#include <Magnum/Trade/ImageData.h>
+
+namespace floormat::loader_detail {
+
+std::shared_ptr<tile_atlas> loader_impl::tile_atlas(StringView name, Vector2ub size)
+{
+    const emplacer e{[&] { return std::make_shared<struct tile_atlas>(name, texture(IMAGE_PATH, name), size); }};
+    auto atlas = tile_atlas_map.try_emplace(name, e).first->second;
+    return atlas;
+}
+
+ArrayView<String> loader_impl::anim_atlas_list()
+{
+    if (anim_atlases.empty())
+        get_anim_atlas_list();
+    return anim_atlases;
+}
+
+std::shared_ptr<anim_atlas> loader_impl::anim_atlas(StringView name)
+{
+    if (auto it = anim_atlas_map.find(name); it != anim_atlas_map.end())
+        return it->second;
+    else
+    {
+        const auto path = Path::join(ANIM_PATH, Path::splitExtension(name).first());
+        auto anim_info = deserialize_anim(path + ".json");
+        auto tex = texture("", path);
+
+        fm_assert(!anim_info.anim_name.isEmpty() && !anim_info.object_name.isEmpty());
+        fm_assert(anim_info.pixel_size.product() > 0);
+        fm_assert(!anim_info.groups.empty());
+        fm_assert(anim_info.nframes > 0);
+        fm_assert(anim_info.nframes == 1 || anim_info.fps > 0);
+
+        auto atlas = std::make_shared<struct anim_atlas>(path, tex, std::move(anim_info));
+        return anim_atlas_map[atlas->name()] = atlas;
+    }
+}
+
+void loader_impl::get_anim_atlas_list()
+{
+    anim_atlases.clear();
+    anim_atlases.reserve(64);
+    using f = Path::ListFlag;
+    constexpr auto flags = f::SkipDirectories | f::SkipDotAndDotDot | f::SkipSpecial | f::SortAscending;
+    if (const auto list = Path::list(ANIM_PATH, flags); list)
+        for (StringView str : *list)
+            if (str.hasSuffix(".json"))
+                anim_atlases.emplace_back(str.exceptSuffix(std::size(".json")-1));
+}
+
+} // namespace floormat::loader_detail