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sthalik · Nov 26, 2023 · 143b205 · 143b205
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commit 143b205
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diff --git a/test/wall-atlas.cpp b/test/wall-atlas.cpp
@@ -60,6 +60,7 @@ void test_read_groups(StringView filename)
     fm_assert(!is_direction_defined(read_direction_metadata(jroot, Direction_::S)));
 
     const auto dir = read_direction_metadata(jroot, Direction_::W);
+    fm_assert(is_direction_defined(dir));
     fm_assert(dir.passability        == pass_mode::shoot_through);
     fm_assert(dir.wall.pixel_size    == Vector2ui{}                        );
     fm_assert(dir.wall.default_tint  == false                              );

diff --git a/wall-tileset-tool/main.cpp b/wall-tileset-tool/main.cpp
@@ -102,6 +102,9 @@ bool do_direction(state& st, size_t i)
 
     for (auto [_str, ptr, tag] : Direction::groups)
     {
+        const auto& old_group = old_dir.*ptr;
+        if (!old_group.is_defined)
+            continue;
         if (!do_group(st, i, (size_t)tag, dir.*ptr))
             return false;
     }