a

3 files changed, 20 insertions, 12 deletions

diff --git a/serialize/world-impl.hpp b/serialize/world-impl.hpp
index df0657ce..0ec1dee4 100644
--- a/serialize/world-impl.hpp
+++ b/serialize/world-impl.hpp
@@ -50,7 +50,7 @@ template<typename T> constexpr inline T int_max = std::numeric_limits<T>::max();
 
 #define file_magic ".floormat.save"
 
-constexpr inline proto_t proto_version = 17;
+constexpr inline proto_t proto_version = 18;
 
 constexpr inline size_t atlas_name_max = 128;
 constexpr inline auto null_atlas = (atlasid)-1LL;
@@ -62,9 +62,7 @@ constexpr inline proto_t min_proto_version = 1;
 constexpr inline auto chunk_magic = (uint16_t)~0xc0d3;
 constexpr inline auto scenery_magic = (uint16_t)~0xb00b;
 
-using pass_mode_i = std::underlying_type_t<pass_mode>;
-constexpr inline pass_mode_i pass_mask = (1 << pass_mode_BITS)-1;
-using object_type_i = std::underlying_type_t<object_type>;
+constexpr inline auto pass_mask = (1 << pass_mode_BITS)-1;
 
 template<typename T, size_t N, size_t off>
 constexpr inline auto highbits = (T(1) << N)-1 << sizeof(T)*8-N-off;
diff --git a/serialize/world-reader.cpp b/serialize/world-reader.cpp
index 74023092..71d55cb7 100644
--- a/serialize/world-reader.cpp
+++ b/serialize/world-reader.cpp
@@ -250,10 +250,22 @@ void reader_state::read_chunks(reader_t& s)
 
         for (auto i = 0uz; i < object_count; i++)
         {
-            object_id _id; _id << s;
-            const auto oid = _id & lowbits<60, object_id>;
-            fm_soft_assert(oid != 0);
-            const auto type = object_type(_id >> 61);
+            object_id oid;
+            object_type type;
+            if (PROTO >= 18) [[likely]]
+            {
+                oid << s;
+                fm_soft_assert((oid & lowbits<collision_data_BITS, object_id>) == oid);
+                type = object_type(s.read<std::underlying_type_t<object_type>>());
+                fm_soft_assert(type < object_type::COUNT);
+            }
+            else
+            {
+                object_id _id; _id << s;
+                oid = _id & lowbits<60, object_id>;
+                fm_soft_assert(oid != 0);
+                type = object_type(_id >> 61);
+            }
             const auto local = local_coords{s.read<uint8_t>()};
 
             Vector2b offset;
diff --git a/serialize/world-writer.cpp b/serialize/world-writer.cpp
index 6dad7f07..6de452c2 100644
--- a/serialize/world-writer.cpp
+++ b/serialize/world-writer.cpp
@@ -185,7 +185,7 @@ template<typename T, object_subtype U>
 void write_object_flags(binary_writer<T>& s, const U& e)
 {
     uint8_t flags = 0;
-    auto pass = (pass_mode_i)e.pass;
+    auto pass = std::to_underlying(e.pass);
     fm_assert((pass & pass_mask) == pass);
     flags |= pass;
     constexpr auto tag = object_type_<U>::value;
@@ -335,10 +335,8 @@ void writer_state::serialize_scenery(const chunk& c, writer_t& s)
         object_id oid = e.id;
         fm_assert((oid & lowbits<collision_data_BITS, object_id>) == e.id);
         const auto type = e.type();
-        const auto type_ = (object_type_i)type;
-        fm_assert(type_ == (type_ & lowbits<object_type_BITS, object_type_i>));
-        oid |= (object_id)type << 64 - object_type_BITS;
         s << oid;
+        s << std::to_underlying(type);
         const auto local = e.coord.local();
         s << local.to_index();
         s << e.offset[0];