5 files changed, 14 insertions, 14 deletions
diff --git a/editor/app.hpp b/editor/app.hpp
index 63fcd6ae..b1e8f75c 100644
--- a/editor/app.hpp
+++ b/editor/app.hpp
@@ -11,10 +11,10 @@
 #include "keys.hpp"
 
 #include <memory>
-#include <optional>
 
-#include <Magnum/ImGuiIntegration/Context.h>
 #include <Corrade/Containers/Pointer.h>
+#include <Corrade/Containers/Optional.h>
+#include <Magnum/ImGuiIntegration/Context.h>
 
 namespace floormat {
 
@@ -26,8 +26,8 @@ struct fm_settings;
 struct anim_atlas;
 
 struct cursor_state final {
-    std::optional<Vector2i> pixel;
-    std::optional<global_coords> tile;
+    Optional<Vector2i> pixel;
+    Optional<global_coords> tile;
     bool in_imgui = false;
 };
 
@@ -47,7 +47,7 @@ private:
     int exec();
 
     void update(float dt) override;
-    void update_cursor_tile(const std::optional<Vector2i>& pixel);
+    void update_cursor_tile(const Optional<Vector2i>& pixel);
     void maybe_initialize_chunk(const chunk_coords& pos, chunk& c) override;
     void maybe_initialize_chunk_(const chunk_coords& pos, chunk& c);
 
diff --git a/editor/camera.cpp b/editor/camera.cpp
index bb69c626..35d24ef4 100644
--- a/editor/camera.cpp
+++ b/editor/camera.cpp
@@ -56,13 +56,13 @@ void app::reset_camera_offset()
     update_cursor_tile(cursor.pixel);
 }
 
-void app::update_cursor_tile(const std::optional<Vector2i>& pixel)
+void app::update_cursor_tile(const Optional<Vector2i>& pixel)
 {
     cursor.pixel = pixel;
     if (pixel)
         cursor.tile = M->pixel_to_tile(Vector2d{*pixel});
     else
-        cursor.tile = std::nullopt;
+        cursor.tile = NullOpt;
 }
 
 } // namespace floormat
diff --git a/editor/editor.cpp b/editor/editor.cpp
index 67d9f344..e2690101 100644
--- a/editor/editor.cpp
+++ b/editor/editor.cpp
@@ -18,7 +18,7 @@ tile_editor* editor::current_tile_editor() noexcept
 
 void editor::on_release()
 {
-    _last_pos = std::nullopt;
+    _last_pos = NullOpt;
 }
 
 auto editor::get_snap_value(snap_mode snap, int mods) const -> snap_mode
@@ -72,7 +72,7 @@ void editor::on_mouse_move(world& world, global_coords& pos, int mods)
             }
             else
                 on_click_(world, draw_coord, last.btn);
-            _last_pos = { pos, draw_coord, snap, last.btn };
+            _last_pos = { InPlaceInit, pos, draw_coord, snap, last.btn };
         }
         pos = draw_coord;
     }
@@ -97,7 +97,7 @@ void editor::on_click(world& world, global_coords pos, int mods, button b)
 {
     if (auto* mode = current_tile_editor(); mode != nullptr)
     {
-        _last_pos = { pos, pos, mode->check_snap(mods), b };
+        _last_pos = { InPlaceInit, pos, pos, mode->check_snap(mods), b };
         on_click_(world, pos, b);
     }
 }
diff --git a/editor/editor.hpp b/editor/editor.hpp
index 1c9d9bec..4f667e96 100644
--- a/editor/editor.hpp
+++ b/editor/editor.hpp
@@ -8,9 +8,9 @@
 #include "tile-editor.hpp"
 #include "scenery-editor.hpp"
 
-#include <optional>
 #include <map>
 #include <memory>
+#include <Corrade/Containers/Optional.h>
 #include <Corrade/Containers/StringView.h>
 
 namespace floormat {
@@ -58,7 +58,7 @@ private:
         snap_mode snap = snap_mode::none;
         button btn;
     };
-    std::optional<drag_pos> _last_pos;
+    Optional<drag_pos> _last_pos;
     editor_mode _mode = editor_mode::floor;
     bool _dirty = false;
 };
diff --git a/editor/events.cpp b/editor/events.cpp
index 821c9c4d..fc55cca2 100644
--- a/editor/events.cpp
+++ b/editor/events.cpp
@@ -175,13 +175,13 @@ void app::on_viewport_event(const Math::Vector2<int>& size) noexcept
 
 void app::on_focus_out() noexcept
 {
-    update_cursor_tile(std::nullopt);
+    update_cursor_tile(NullOpt);
     clear_keys();
 }
 
 void app::on_mouse_leave() noexcept
 {
-    update_cursor_tile(std::nullopt);
+    update_cursor_tile(NullOpt);
 }
 
 void app::do_key(floormat::key k)