33 files changed, 42 insertions, 37 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c427b13b..6a050c7a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -272,7 +272,7 @@ endfunction()
 
 function(fm_install_assets)
     set(CMAKE_INSTALL_MESSAGE NEVER)
-    foreach(subdir images anim scenery vobj walls)
+    foreach(subdir images anim scenery vobj ground walls)
         fm_install_kill_directory("${subdir}")
         install(DIRECTORY "${subdir}" DESTINATION "share/floormat")
     endforeach()
diff --git a/bench/bitmask.cpp b/bench/bitmask.cpp
index 9efa25a9..6f80e992 100644
--- a/bench/bitmask.cpp
+++ b/bench/bitmask.cpp
@@ -12,7 +12,7 @@ namespace {
 
 [[maybe_unused]] void Bitmask(benchmark::State& state)
 {
-    auto img = loader.texture(loader.SCENERY_PATH, "door-close"_s);
+    auto img = loader.texture(loader.SCENERY_PATH, "door-close"_s, false);
     auto bitmask = anim_atlas::make_bitmask(img);
     anim_atlas::make_bitmask_(img, bitmask);
 
diff --git a/draw/floor.cpp b/draw/ground.cpp
index a073f39f..515729b1 100644
--- a/draw/floor.cpp
+++ b/draw/ground.cpp
@@ -1,4 +1,4 @@
-#include "floor.hpp"
+#include "ground.hpp"
 #include "shaders/shader.hpp"
 #include "src/chunk.hpp"
 #include "src/ground-atlas.hpp"
@@ -7,9 +7,9 @@
 
 namespace floormat {
 
-floor_mesh::floor_mesh() = default;
+ground_mesh::ground_mesh() = default;
 
-void floor_mesh::draw(tile_shader& shader, chunk& c)
+void ground_mesh::draw(tile_shader& shader, chunk& c)
 {
     constexpr int quad_index_count = 6;
     const auto [mesh_, ids, size] = c.ensure_ground_mesh();
@@ -42,7 +42,7 @@ void floor_mesh::draw(tile_shader& shader, chunk& c)
 //#define FM_DEBUG_DRAW_COUNT
 #ifdef FM_DEBUG_DRAW_COUNT
     if (draw_count)
-        fm_debug("floor draws: %zu", draw_count);
+        fm_debug("ground draws: %zu", draw_count);
 #endif
 }
 
diff --git a/draw/floor.hpp b/draw/ground.hpp
index 74547857..b960e8b1 100644
--- a/draw/floor.hpp
+++ b/draw/ground.hpp
@@ -5,9 +5,9 @@ namespace floormat {
 struct tile_shader;
 struct chunk;
 
-struct floor_mesh final
+struct ground_mesh final
 {
-    floor_mesh();
+    ground_mesh();
 
     void draw(tile_shader& shader, chunk& c);
 };
diff --git a/editor/draw.cpp b/editor/draw.cpp
index c4f6a8a2..84ceef00 100644
--- a/editor/draw.cpp
+++ b/editor/draw.cpp
@@ -68,7 +68,7 @@ void app::draw_cursor()
             if (ed->is_anything_selected())
             {
                 shader.set_tint({1, 1, 1, 0.75f});
-                auto [_f, _w, anim_mesh] = M->meshes();
+                auto [_g, _w, anim_mesh] = M->meshes();
                 const auto offset = Vector3i(Vector2i(sel.offset), 0);
                 const auto pos = Vector3i(tile)*iTILE_SIZE + offset;
                 auto [ch, t] = w[tile];
@@ -86,7 +86,7 @@ void app::draw_cursor()
                 const auto& atlas = vo->get_selected()->factory->atlas();
                 draw(_wireframe_quad, TILE_SIZE2);
                 shader.set_tint({1, 1, 1, 0.75f});
-                auto [_f, _w, anim_mesh] = M->meshes();
+                auto [_g, _w, anim_mesh] = M->meshes();
                 const auto pos = Vector3i(tile)*iTILE_SIZE;
                 anim_mesh.draw(shader, *atlas, rotation::N, 0, Vector3(pos), 1);
             }
diff --git a/editor/ground-editor.cpp b/editor/ground-editor.cpp
index 0f67853e..2a74952c 100644
--- a/editor/ground-editor.cpp
+++ b/editor/ground-editor.cpp
@@ -17,7 +17,7 @@ ground_editor::ground_editor()
 
 void ground_editor::load_atlases()
 {
-    for (const auto& atlas : loader.ground_atlases("floor.json"_s))
+    for (const auto& atlas : loader.ground_atlases("ground.json"_s))
     {
         auto& [_, vec] = _permutation;
         vec.reserve(atlas->num_tiles());
@@ -41,7 +41,7 @@ std::shared_ptr<ground_atlas> ground_editor::atlas(StringView str)
         fm_throw("no such atlas: {}"_cf, str);
 }
 
-StringView ground_editor::name() const noexcept { return "floor"_s; }
+StringView ground_editor::name() const noexcept { return "ground"_s; }
 
 void ground_editor::clear_selection()
 {
diff --git a/editor/update.cpp b/editor/update.cpp
index 1140ad47..6ecffc80 100644
--- a/editor/update.cpp
+++ b/editor/update.cpp
@@ -17,7 +17,7 @@ namespace floormat {
 
 void app::maybe_initialize_chunk_(const chunk_coords_& pos, chunk& c)
 {
-    auto floor1 = loader.ground_atlas("floor-tiles", { 44, 4 }, pass_mode::pass);
+    auto floor1 = loader.ground_atlas("ground-tiles", { 44, 4 }, pass_mode::pass);
     auto floor2 = loader.ground_atlas("metal1", { 2, 2 }, pass_mode::pass);
     auto wall1  = loader.ground_atlas("wood2", { 2, 1 }, pass_mode::blocked);
     auto wall2  = loader.ground_atlas("wood1", { 2, 1 }, pass_mode::blocked);
diff --git a/floormat/main.hpp b/floormat/main.hpp
index 1604ad22..27404fe3 100644
--- a/floormat/main.hpp
+++ b/floormat/main.hpp
@@ -17,7 +17,7 @@ struct world;
 struct scenery;
 class anim_atlas;
 struct clickable;
-struct floor_mesh;
+struct ground_mesh;
 struct wall_mesh;
 struct anim_mesh;
 struct texture_unit_cache;
@@ -28,7 +28,7 @@ struct floormat_main
 {
     struct draw_bounds final { int16_t minx, maxx, miny, maxy; };
     struct meshes final {
-        floor_mesh& floor;
+        ground_mesh& ground;
         wall_mesh& wall;
         anim_mesh& anim;
     };
diff --git a/images/concrete1.tga b/ground/concrete1.tga
index e7856645..e7856645 100644
--- a/images/concrete1.tga
+++ b/ground/concrete1.tga
diff --git a/images/concrete6.tga b/ground/concrete6.tga
index 91b332dd..91b332dd 100644
--- a/images/concrete6.tga
+++ b/ground/concrete6.tga
diff --git a/images/concrete7.tga b/ground/concrete7.tga
index 476dcec0..476dcec0 100644
--- a/images/concrete7.tga
+++ b/ground/concrete7.tga
diff --git a/images/floor-tiles.tga b/ground/floor-tiles.tga
index 1a0a6d79..1a0a6d79 100644
--- a/images/floor-tiles.tga
+++ b/ground/floor-tiles.tga
diff --git a/images/floor.json b/ground/ground.json
index 9d9e0c2e..9d9e0c2e 100644
--- a/images/floor.json
+++ b/ground/ground.json
diff --git a/images/metal1.tga b/ground/metal1.tga
index d305638d..d305638d 100644
--- a/images/metal1.tga
+++ b/ground/metal1.tga
diff --git a/images/metal2.tga b/ground/metal2.tga
index 6e9b64e9..6e9b64e9 100644
--- a/images/metal2.tga
+++ b/ground/metal2.tga
diff --git a/images/teak1.tga b/ground/teak1.tga
index df1927c6..df1927c6 100644
--- a/images/teak1.tga
+++ b/ground/teak1.tga
diff --git a/images/texel.tga b/ground/texel.tga
index 99314406..99314406 100644
--- a/images/texel.tga
+++ b/ground/texel.tga
diff --git a/images/tiles.tga b/ground/tiles.tga
index 1376a27c..1376a27c 100644
--- a/images/tiles.tga
+++ b/ground/tiles.tga
diff --git a/images/wall1.tga b/ground/wall1.tga
index 44f3566d..44f3566d 100644
--- a/images/wall1.tga
+++ b/ground/wall1.tga
diff --git a/images/wood1.tga b/ground/wood1.tga
index 6c28183c..6c28183c 100644
--- a/images/wood1.tga
+++ b/ground/wood1.tga
diff --git a/images/wood2.tga b/ground/wood2.tga
index e8c689d2..e8c689d2 100644
--- a/images/wood2.tga
+++ b/ground/wood2.tga
diff --git a/loader/atlas.cpp b/loader/atlas.cpp
index c7bfbdbf..eb368952 100644
--- a/loader/atlas.cpp
+++ b/loader/atlas.cpp
@@ -56,9 +56,9 @@ std::shared_ptr<ground_atlas> loader_impl::ground_atlas(StringView name, Vector2
     fm_soft_assert(check_atlas_name(name));
 
     char buf[FILENAME_MAX];
-    auto path = make_atlas_path(buf, IMAGE_PATH, name);
+    auto path = make_atlas_path(buf, GROUND_TILESET_PATH, name);
 
-    auto atlas = std::make_shared<class ground_atlas>(path, name, texture(""_s, path), size, pass);
+    auto atlas = std::make_shared<class ground_atlas>(path, name, texture(""_s, path, false), size, pass);
     ground_atlas_map[atlas->name()] = atlas;
     return atlas;
 }
@@ -107,7 +107,7 @@ std::shared_ptr<anim_atlas> loader_impl::anim_atlas(StringView name, StringView
             }
         }
 
-        auto tex = texture(""_s, path);
+        auto tex = texture(""_s, path, false);
 
         fm_soft_assert(!anim_info.object_name.isEmpty());
         fm_soft_assert(anim_info.pixel_size.product() > 0);
diff --git a/loader/impl.hpp b/loader/impl.hpp
index 165b7c2f..ad82e46d 100644
--- a/loader/impl.hpp
+++ b/loader/impl.hpp
@@ -42,7 +42,7 @@ struct loader_impl final : loader_
     StringView shader(StringView filename) noexcept override;
 
     Trade::ImageData2D make_error_texture(Vector2ui size);
-    Trade::ImageData2D texture(StringView prefix, StringView filename, bool fail_ok = true) noexcept(false) override;
+    Trade::ImageData2D texture(StringView prefix, StringView filename) noexcept(false) override;
 
     // >-----> walls >----->
     struct wall_index { uint32_t val = (uint32_t)-1; };
@@ -55,7 +55,7 @@ struct loader_impl final : loader_
     std::shared_ptr<class wall_atlas> wall_atlas(StringView name, bool fail_ok = true) override;
     ArrayView<const wall_info> wall_atlas_list() override;
     void get_wall_atlas_list();
-    const wall_info& make_invalid_wall_atlas();
+    const wall_info& make_invalid_wall_atlas() noexcept override;
     std::shared_ptr<class wall_atlas> get_wall_atlas(StringView name, StringView path);
 
     // >-----> tile >----->
@@ -64,7 +64,7 @@ struct loader_impl final : loader_
 
     ArrayView<const std::shared_ptr<class ground_atlas>> ground_atlases(StringView filename) noexcept(false) override;
     std::shared_ptr<class ground_atlas> ground_atlas(StringView filename, Vector2ub size, pass_mode pass) noexcept(false) override;
-    std::shared_ptr<class ground_atlas> ground_atlas(StringView filename) noexcept(false) override;
+    std::shared_ptr<class ground_atlas> ground_atlas(StringView filename, bool fail_ok) noexcept(false) override;
 
     // >-----> anim >----->
     tsl::robin_map<StringView, std::shared_ptr<class anim_atlas>> anim_atlas_map;
diff --git a/loader/json.cpp b/loader/json.cpp
index 8e2f329f..ed15edbc 100644
--- a/loader/json.cpp
+++ b/loader/json.cpp
@@ -58,7 +58,7 @@ ArrayView<const std::shared_ptr<class ground_atlas>> loader_impl::ground_atlases
     if (!ground_atlas_array.empty()) [[likely]]
         return ground_atlas_array;
     ground_atlas_array = json_helper::from_json<std::vector<std::shared_ptr<class ground_atlas>>>(
-        Path::join(loader_::IMAGE_PATH, filename));
+        Path::join(loader_::GROUND_TILESET_PATH, filename));
     fm_assert(!ground_atlas_array.empty());
     return ground_atlas_array;
 }
diff --git a/loader/loader.cpp b/loader/loader.cpp
index 71be9b16..80599c3d 100644
--- a/loader/loader.cpp
+++ b/loader/loader.cpp
@@ -24,24 +24,27 @@ loader_::~loader_() noexcept = default;
 
 StringView loader_::strip_prefix(StringView name)
 {
-    if (name.hasPrefix(IMAGE_PATH))
-        return name.exceptPrefix(IMAGE_PATH.size());
+    if (name.hasPrefix(IMAGE_PATH_))
+        return name.exceptPrefix(IMAGE_PATH_.size());
     if (name.hasPrefix(ANIM_PATH))
         return name.exceptPrefix(ANIM_PATH.size());
     if (name.hasPrefix(SCENERY_PATH))
         return name.exceptPrefix(SCENERY_PATH.size());
     if (name.hasPrefix(VOBJ_PATH))
         return name.exceptPrefix(VOBJ_PATH.size());
+    if (name.hasPrefix(GROUND_TILESET_PATH))
+        return name.exceptPrefix(GROUND_TILESET_PATH.size());
     if (name.hasPrefix(WALL_TILESET_PATH))
         return name.exceptPrefix(WALL_TILESET_PATH.size());
     return name;
 }
 
-const StringView loader_::IMAGE_PATH = "images/"_s;
+const StringView loader_::IMAGE_PATH_ = "images/"_s;
 const StringView loader_::ANIM_PATH = "anim/"_s;
 const StringView loader_::SCENERY_PATH = "scenery/"_s;
 const StringView loader_::TEMP_PATH = "../../../"_s;
 const StringView loader_::VOBJ_PATH = "vobj/"_s;
+const StringView loader_::GROUND_TILESET_PATH = "ground/"_s;
 const StringView loader_::WALL_TILESET_PATH = "walls/"_s;
 
 } // namespace floormat
diff --git a/loader/loader.hpp b/loader/loader.hpp
index 63b5ea5c..fc58e61a 100644
--- a/loader/loader.hpp
+++ b/loader/loader.hpp
@@ -23,11 +23,12 @@ struct wall_info;
 struct loader_
 {
     virtual StringView shader(StringView filename) noexcept = 0;
-    virtual Trade::ImageData2D texture(StringView prefix, StringView filename, bool fail_ok = true) noexcept(false) = 0;
+    virtual Trade::ImageData2D texture(StringView prefix, StringView filename) noexcept(false) = 0;
     virtual std::shared_ptr<class ground_atlas> ground_atlas(StringView filename, Vector2ub size, pass_mode pass) noexcept(false) = 0;
-    virtual std::shared_ptr<class ground_atlas> ground_atlas(StringView filename) noexcept(false) = 0;
+    virtual std::shared_ptr<class ground_atlas> ground_atlas(StringView filename, bool fail_ok = false) noexcept(false) = 0;
     virtual ArrayView<const String> anim_atlas_list() = 0;
     virtual std::shared_ptr<class anim_atlas> anim_atlas(StringView name, StringView dir = ANIM_PATH) noexcept(false) = 0;
+    virtual const wall_info& make_invalid_wall_atlas() noexcept = 0;
     virtual std::shared_ptr<class wall_atlas> wall_atlas(StringView name, bool fail_ok = true) noexcept(false) = 0;
     virtual ArrayView<const wall_info> wall_atlas_list() = 0;
     static void destroy();
@@ -47,11 +48,12 @@ struct loader_
 
     virtual ~loader_() noexcept;
 
-    static const StringView IMAGE_PATH;
+    static const StringView IMAGE_PATH_;
     static const StringView ANIM_PATH;
     static const StringView SCENERY_PATH;
     static const StringView TEMP_PATH;
     static const StringView VOBJ_PATH;
+    static const StringView GROUND_TILESET_PATH;
     static const StringView WALL_TILESET_PATH;
 
 protected:
diff --git a/loader/vobj.cpp b/loader/vobj.cpp
index 9aa6fb39..a309fd6a 100644
--- a/loader/vobj.cpp
+++ b/loader/vobj.cpp
@@ -46,7 +46,7 @@ namespace floormat::loader_detail {
 
 std::shared_ptr<class anim_atlas> loader_impl::make_vobj_anim_atlas(StringView name, StringView image_filename)
 {
-    auto tex = texture(VOBJ_PATH, image_filename);
+    auto tex = texture(VOBJ_PATH, image_filename, false);
     anim_def def;
     def.object_name = name;
     const auto size = tex.pixels().size();
diff --git a/loader/wall-atlas.cpp b/loader/wall-atlas.cpp
index 66dc3ba5..7d423b26 100644
--- a/loader/wall-atlas.cpp
+++ b/loader/wall-atlas.cpp
@@ -46,7 +46,7 @@ std::shared_ptr<wall_atlas> loader_impl::get_wall_atlas(StringView name, StringV
     char buf[FILENAME_MAX];
     auto filename = make_atlas_path(buf, path, name);
     auto def = wall_atlas_def::deserialize(""_s.join({filename, ".json"_s}));
-    auto tex = texture(""_s, filename, false);
+    auto tex = texture(""_s, filename);
 
     fm_soft_assert(name == def.header.name);
     fm_soft_assert(!def.frames.empty());
@@ -54,7 +54,7 @@ std::shared_ptr<wall_atlas> loader_impl::get_wall_atlas(StringView name, StringV
     return atlas;
 }
 
-const wall_info& loader_impl::make_invalid_wall_atlas()
+const wall_info& loader_impl::make_invalid_wall_atlas() noexcept
 {
     if (invalid_wall_atlas) [[likely]]
         return *invalid_wall_atlas;
diff --git a/main/draw.cpp b/main/draw.cpp
index 98fd861e..4de42473 100644
--- a/main/draw.cpp
+++ b/main/draw.cpp
@@ -178,7 +178,7 @@ void main_impl::draw_world() noexcept
                 const with_shifted_camera_offset o{_shader, ch, {minx, miny}, {maxx, maxy}};
                 if (check_chunk_visible(_shader.camera_offset(), sz))
                 {
-                    _floor_mesh.draw(_shader, c);
+                    _ground_mesh.draw(_shader, c);
                     _wall_mesh.draw(_shader, c);
                 }
             }
diff --git a/main/main-impl.hpp b/main/main-impl.hpp
index f66b0248..8aaf6312 100644
--- a/main/main-impl.hpp
+++ b/main/main-impl.hpp
@@ -2,7 +2,7 @@
 #include "floormat/main.hpp"
 #include "floormat/settings.hpp"
 #include "src/world.hpp"
-#include "draw/floor.hpp"
+#include "draw/ground.hpp"
 #include "draw/wall.hpp"
 #include "draw/anim.hpp"
 #include "shaders/texture-unit-cache.hpp"
@@ -111,7 +111,7 @@ private:
     struct world _world{};
     Magnum::Timeline timeline;
     uint32_t _mouse_cursor = (uint32_t)-1;
-    floor_mesh _floor_mesh;
+    ground_mesh _ground_mesh;
     wall_mesh _wall_mesh;
     anim_mesh _anim_mesh;
 #ifdef FM_USE_DEPTH32
diff --git a/main/setup.cpp b/main/setup.cpp
index 15b34b2b..45f941cb 100644
--- a/main/setup.cpp
+++ b/main/setup.cpp
@@ -100,7 +100,7 @@ void main_impl::update_window_state()
 
 auto main_impl::meshes() noexcept -> struct meshes
 {
-    return { _floor_mesh, _wall_mesh, _anim_mesh, };
+    return { _ground_mesh, _wall_mesh, _anim_mesh, };
 };
 
 struct world& main_impl::reset_world() noexcept
diff --git a/test/bitmask.cpp b/test/bitmask.cpp
index ef8f3b1c..0fae6a23 100644
--- a/test/bitmask.cpp
+++ b/test/bitmask.cpp
@@ -23,7 +23,7 @@ static_assert(data_nbytes == 128);
 
 void bitmask_test()
 {
-    auto img = loader.texture(loader.SCENERY_PATH, "door-close"_s);
+    auto img = loader.texture(loader.SCENERY_PATH, "door-close"_s, false);
     auto bitmask = anim_atlas::make_bitmask(img);
     fm_assert(img.pixelSize() == 4 && (size_t)img.size().product() >= data_nbytes);
 #ifdef DO_GENERATE
diff --git a/test/loader.cpp b/test/loader.cpp
index 88fa2b32..f400ecb3 100644
--- a/test/loader.cpp
+++ b/test/loader.cpp
@@ -8,7 +8,7 @@ namespace floormat {
 
 void test_app::test_loader()
 {
-    (void)loader.ground_atlases("floor.json");
+    (void)loader.ground_atlases("ground.json");
     fm_assert(loader.ground_atlas("texel")->pass_mode() == pass_mode::blocked);
     fm_assert(loader.ground_atlas("metal1")->pass_mode() == pass_mode::pass);
     loader.sceneries();