serialize/save: fix serializing proto 1 flags

2 files changed, 9 insertions, 2 deletions

diff --git a/serialize/world-impl.hpp b/serialize/world-impl.hpp
index dcd379a9..ea2a9cde 100644
--- a/serialize/world-impl.hpp
+++ b/serialize/world-impl.hpp
@@ -57,7 +57,8 @@ enum : tilemeta {
     meta_wall_n         = 1 << (pass_bits + 1),
     meta_wall_w         = 1 << (pass_bits + 2),
     meta_short_atlasid  = 1 << (pass_bits + 3),
-    meta_scenery        = 1 << (pass_bits + 4),
+    meta_short_variant_ = 1 << (pass_bits + 4),
+    meta_scenery        = 1 << (pass_bits + 5),
 };
 
 } // namespace floormat::Serialize
diff --git a/serialize/world-reader.cpp b/serialize/world-reader.cpp
index d61a574a..eb775e77 100644
--- a/serialize/world-reader.cpp
+++ b/serialize/world-reader.cpp
@@ -136,7 +136,13 @@ void reader_state::read_chunks(reader_t& s)
             using uchar = std::uint8_t;
             const auto make_atlas = [&]() -> tile_image_proto {
                 auto id = flags & meta_short_atlasid ? atlasid{s.read<uchar>()} : s.read<atlasid>();
-                auto v  = s.read<variant_t>();
+                variant_t v;
+                if (PROTO >= 2) [[likely]]
+                    s >> v;
+                else
+                    v = flags & meta_short_variant_
+                        ? s.read<std::uint8_t>()
+                        : std::uint8_t(s.read<std::uint16_t>());
                 auto atlas = lookup_atlas(id);
                 fm_assert(v < atlas->num_tiles());
                 return { atlas, v };