1 files changed, 59 insertions, 0 deletions
diff --git a/serialize/world-impl.hpp b/serialize/world-impl.hpp
new file mode 100644
index 00000000..b2d74db3
--- /dev/null
+++ b/serialize/world-impl.hpp
@@ -0,0 +1,59 @@
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-macros"
+#ifndef FM_SERIALIZE_WORLD_IMPL
+#error "not meant to be included directly"
+#endif
+
+#pragma once
+#include "src/tile.hpp"
+
+namespace floormat::Serialize {
+
+namespace {
+
+using tilemeta  = std::uint8_t;
+using imgvar    = std::uint8_t;
+using atlasid   = std::uint16_t;
+using enum tile::pass_mode;
+
+template<typename T> constexpr inline T int_max = std::numeric_limits<T>::max();
+
+#define file_magic ".floormat.save"
+
+constexpr inline std::size_t atlas_name_max = 128;
+constexpr inline auto null_atlas = (atlasid)-1LL;
+
+constexpr inline std::uint16_t proto_version = 1;
+constexpr inline auto chunk_magic = (std::uint16_t)~0xc0d3;
+
+constexpr inline std::underlying_type_t<tile::pass_mode> pass_mask = pass_blocked | pass_shoot_through | pass_ok;
+constexpr inline auto pass_bits = std::bit_width(pass_mask);
+
+enum : tilemeta {
+    meta_ground     = 1 << (pass_bits + 0),
+    meta_wall_n     = 1 << (pass_bits + 1),
+    meta_wall_w     = 1 << (pass_bits + 2),
+};
+
+} // namespace
+
+} // namespace floormat::Serialize
+
+namespace floormat {
+
+namespace {
+
+struct FILE_raii final {
+    FILE_raii(FILE* s) noexcept : s{s} {}
+    ~FILE_raii() noexcept { if (s) ::fclose(s); }
+    operator FILE*() noexcept { return s; }
+    void close() noexcept { if (s) ::fclose(s); s = nullptr; }
+private:
+    FILE* s;
+};
+
+} // namespace
+
+} // namespace floormat
+
+#pragma clang diagnostic pop