loader: implement wall_traits

1 files changed, 44 insertions, 14 deletions

diff --git a/loader/wall-traits.cpp b/loader/wall-traits.cpp
index 4edc3900..9fbe4286 100644
--- a/loader/wall-traits.cpp
+++ b/loader/wall-traits.cpp
@@ -4,21 +4,24 @@
 #include "atlas-loader-storage.hpp"
 #include "wall-cell.hpp"
 #include "loader.hpp"
+#include "src/tile-defs.hpp"
 #include "src/wall-atlas.hpp"
-#include <Corrade/Containers/StringView.h>
-#include <Corrade/Containers/Pointer.h>
+#include <cr/StringView.h>
+#include <cr/Pointer.h>
+#include <mg/ImageData.h>
+#include <mg/ImageView.h>
 
 namespace floormat::loader_detail {
 
+namespace { const auto placeholder_cell = wall_cell{}; }
+using wall_traits = atlas_loader_traits<wall_atlas>;
 StringView atlas_loader_traits<wall_atlas>::loader_name() { return "wall_atlas"_s; }
 auto atlas_loader_traits<wall_atlas>::atlas_of(const Cell& x) -> const std::shared_ptr<Atlas>& { return x.atlas; }
 auto atlas_loader_traits<wall_atlas>::atlas_of(Cell& x) -> std::shared_ptr<Atlas>& { return x.atlas; }
 StringView atlas_loader_traits<wall_atlas>::name_of(const Cell& x) { return x.name; }
 StringView atlas_loader_traits<wall_atlas>::name_of(const Atlas& x) { return x.name(); }
 
-using traits = atlas_loader_traits<wall_atlas>;
-
-void traits::ensure_atlases_loaded(Storage& st)
+void wall_traits::ensure_atlases_loaded(Storage& st)
 {
     if (!st.cell_array.empty()) [[likely]]
         return;
@@ -27,25 +30,52 @@ void traits::ensure_atlases_loaded(Storage& st)
     st.cell_array = wall_cell::load_atlases_from_json().vec;
     st.name_map.reserve(st.cell_array.size());
 
-    for (auto& x : st.cell_array)
+    for (auto& c : st.cell_array)
     {
-        fm_soft_assert(x.name != "<invalid>"_s);
-        fm_soft_assert(loader.check_atlas_name(x.name));
-        StringView name = x.name;
-        st.name_map[name] = &x;
+        fm_soft_assert(c.name != "<invalid>"_s);
+        fm_soft_assert(loader.check_atlas_name(c.name));
+        StringView name = c.name;
+        st.name_map[name] = &c;
     }
 
     fm_assert(!st.cell_array.empty());
 }
 
-auto traits::make_invalid_atlas(Storage& st) -> const Cell&
+auto wall_traits::make_invalid_atlas(Storage& st) -> const Cell&
 {
-    fm_assert("todo" && false);
+    if (st.invalid_atlas) [[likely]]
+        return *st.invalid_atlas;
+
+    constexpr auto name = loader_::INVALID;
+    constexpr auto frame_size = Vector2ui{tile_size_xy, tile_size_z};
+
+    auto a = std::make_shared<class wall_atlas>(
+        wall_atlas_def {
+            Wall::Info{.name = name, .depth = 8},
+            array<Wall::Frame>({{ {}, frame_size}, }),
+            array<Wall::Direction>({{
+                { .index = 0, .count = 1, .pixel_size = frame_size, .is_defined = true, }
+            } }),
+            {{ {.val = 0}, {}, }},
+            {1u},
+        }, name, loader.make_error_texture(frame_size));
+    st.invalid_atlas = Pointer<wall_cell>{InPlaceInit, wall_cell{ .name = name, .atlas = std::move(a) } };
+    return *st.invalid_atlas;
 }
 
-auto traits::make_atlas(StringView name, const Cell& c) -> std::shared_ptr<Atlas>
+auto wall_traits::make_atlas(StringView name, const Cell&) -> std::shared_ptr<Atlas>
 {
-    fm_assert("todo" && false);
+    char file_buf[fm_FILENAME_MAX], json_buf[fm_FILENAME_MAX];
+    auto file = loader.make_atlas_path(file_buf, loader.WALL_TILESET_PATH, name);
+    int json_size = std::snprintf(json_buf, std::size(json_buf), "%s.json", file_buf);
+    fm_soft_assert(json_size != 0 && (size_t)json_size <= std::size_t(json_buf));
+    auto json_name = StringView{json_buf, (size_t)json_size};
+    auto def = wall_atlas_def::deserialize(json_name);
+    auto tex = loader.texture(""_s, file);
+    fm_soft_assert(name == def.header.name);
+    fm_soft_assert(!def.frames.isEmpty());
+    auto atlas = std::make_shared<class wall_atlas>(std::move(def), file, tex);
+    return atlas;
 }
 
 } // namespace floormat::loader_detail