4 files changed, 26 insertions, 7 deletions
diff --git a/loader/atlas.cpp b/loader/atlas.cpp
index f285d3b1..1354e922 100644
--- a/loader/atlas.cpp
+++ b/loader/atlas.cpp
@@ -14,15 +14,25 @@
 
 namespace floormat::loader_detail {
 
-std::shared_ptr<tile_atlas> loader_impl::tile_atlas(StringView name, Vector2ub size) noexcept(false)
+std::shared_ptr<tile_atlas> loader_impl::tile_atlas(StringView name, Vector2ub size, Optional<pass_mode> pass) noexcept(false)
 {
     fm_soft_assert(check_atlas_name(name));
 
-    const emplacer e{[&] { return std::make_shared<struct tile_atlas>(name, texture(IMAGE_PATH, name), size); }};
+    const emplacer e{[&] { return std::make_shared<struct tile_atlas>(name, texture(IMAGE_PATH, name), size, pass); }};
     auto atlas = tile_atlas_map.try_emplace(name, e).first->second;
+    fm_soft_assert(!pass || pass == atlas->pass_mode());
     return atlas;
 }
 
+std::shared_ptr<struct tile_atlas> loader_impl::tile_atlas(StringView filename) noexcept(false)
+{
+    fm_assert(!tile_atlas_map.empty());
+    auto it = tile_atlas_map.find(filename);
+    if (it == tile_atlas_map.end())
+        fm_throw("no such tile atlas '{}'"_cf, filename.data());
+    return it->second;
+}
+
 ArrayView<String> loader_impl::anim_atlas_list()
 {
     if (anim_atlases.empty())
diff --git a/loader/impl.hpp b/loader/impl.hpp
index c50cb1d7..673460aa 100644
--- a/loader/impl.hpp
+++ b/loader/impl.hpp
@@ -30,7 +30,8 @@ struct loader_impl final : loader_
 
     StringView shader(StringView filename) noexcept override;
     Trade::ImageData2D texture(StringView prefix, StringView filename) noexcept(false);
-    std::shared_ptr<struct tile_atlas> tile_atlas(StringView filename, Vector2ub size) noexcept(false) override;
+    std::shared_ptr<struct tile_atlas> tile_atlas(StringView filename, Vector2ub size, Optional<pass_mode> pass) noexcept(false) override;
+    std::shared_ptr<struct tile_atlas> tile_atlas(StringView filename) noexcept(false) override;
     ArrayView<String> anim_atlas_list() override;
     std::shared_ptr<struct anim_atlas> anim_atlas(StringView name, StringView dir) noexcept(false) override;
     const std::vector<serialized_scenery>& sceneries() override;
diff --git a/loader/json.cpp b/loader/json.cpp
index dbe21d50..7e6aae68 100644
--- a/loader/json.cpp
+++ b/loader/json.cpp
@@ -1,6 +1,7 @@
 #include "impl.hpp"
 #include "compat/assert.hpp"
 #include "compat/exception.hpp"
+#include "src/tile-atlas.hpp"
 #include "serialize/json-helper.hpp"
 #include "serialize/anim.hpp"
 #include "serialize/tile-atlas.hpp"
@@ -52,9 +53,14 @@ const scenery_proto& loader_impl::scenery(StringView name) noexcept(false)
 
 namespace floormat {
 
-std::vector<std::shared_ptr<struct tile_atlas>> loader_::tile_atlases(StringView filename)
+std::vector<std::shared_ptr<struct tile_atlas>> loader_::tile_atlases(StringView filename, pass_mode p)
 {
-    return json_helper::from_json<std::vector<std::shared_ptr<struct tile_atlas>>>(Path::join(loader_::IMAGE_PATH, filename));
+    auto vec = json_helper::from_json<std::vector<std::shared_ptr<struct tile_atlas>>>(
+        Path::join(loader_::IMAGE_PATH, filename));
+    for (auto& x : vec)
+        if (!x->pass_mode())
+            x->set_pass_mode(p);
+    return vec;
 }
 
 } // namespace floormat
diff --git a/loader/loader.hpp b/loader/loader.hpp
index 8883ed8a..1189a02d 100644
--- a/loader/loader.hpp
+++ b/loader/loader.hpp
@@ -1,4 +1,5 @@
 #pragma once
+#include "src/pass-mode.hpp"
 #include <memory>
 #include <vector>
 #include <Corrade/Containers/StringView.h>
@@ -15,12 +16,13 @@ struct scenery_proto;
 struct loader_
 {
     virtual StringView shader(StringView filename) noexcept = 0;
-    virtual std::shared_ptr<struct tile_atlas> tile_atlas(StringView filename, Vector2ub size) noexcept(false) = 0;
+    virtual std::shared_ptr<struct tile_atlas> tile_atlas(StringView filename, Vector2ub size, Optional<pass_mode> pass) noexcept(false) = 0;
+    virtual std::shared_ptr<struct tile_atlas> tile_atlas(StringView filename) noexcept(false) = 0;
     virtual ArrayView<String> anim_atlas_list() = 0;
     virtual std::shared_ptr<struct anim_atlas> anim_atlas(StringView name, StringView dir = ANIM_PATH) noexcept(false) = 0;
     static void destroy();
     static loader_& default_loader() noexcept;
-    static std::vector<std::shared_ptr<struct tile_atlas>> tile_atlases(StringView filename);
+    static std::vector<std::shared_ptr<struct tile_atlas>> tile_atlases(StringView filename, pass_mode p);
     virtual const std::vector<serialized_scenery>& sceneries() = 0;
     virtual const scenery_proto& scenery(StringView name) noexcept(false) = 0;