convert line endings

6 files changed, 644 insertions, 644 deletions

diff --git a/serialize/binary-reader.hpp b/serialize/binary-reader.hpp
index 2d09d51b..881ed88f 100644
--- a/serialize/binary-reader.hpp
+++ b/serialize/binary-reader.hpp
@@ -1,49 +1,49 @@
-#pragma once

-#include "binary-serializer.hpp"

-#include <iterator>

-#include <Corrade/Containers/StringView.h>

-

-namespace floormat::Serialize {

-

-template<typename T>

-concept char_sequence = requires(T& x, const T& cx) {

-    requires std::same_as<decltype(std::begin(x)), decltype(std::end(x))>;

-    requires std::same_as<decltype(std::cbegin(cx)), decltype(std::cend(cx))>;

-    requires std::forward_iterator<decltype(std::begin(x))>;

-    requires std::forward_iterator<decltype(std::cbegin(cx))>;

-    requires std::same_as<char, std::decay_t<decltype(*std::begin(x))>>;

-    requires std::same_as<char, std::decay_t<decltype(*std::cbegin(x))>>;

-};

-

-template<typename It>

-concept string_input_iterator = requires(It it) {

-    requires std::forward_iterator<It>;

-    requires std::is_same_v<char, std::decay_t<decltype(*it)>>;

-};

-

-template<string_input_iterator It>

-struct binary_reader final {

-    template<char_sequence Seq> explicit constexpr binary_reader(const Seq& seq) noexcept;

-    constexpr binary_reader(It begin, It end) noexcept;

-    constexpr void assert_end() noexcept;

-

-    template<serializable T> constexpr T read() noexcept;

-    template<std::size_t N> constexpr std::array<char, N> read() noexcept;

-    constexpr std::size_t bytes_read() const noexcept { return num_bytes_read; }

-    template<std::size_t Max> constexpr auto read_asciiz_string() noexcept;

-

-private:

-    std::size_t num_bytes_read = 0;

-    It it, end;

-};

-

-template<string_input_iterator It, serializable T>

-binary_reader<It>& operator>>(binary_reader<It>& reader, T& x) noexcept;

-

-template<string_input_iterator It> binary_reader(It&& begin, It&& end) -> binary_reader<std::decay_t<It>>;

-

-template<typename Array>

-binary_reader(Array&& array) -> binary_reader<std::decay_t<decltype(std::begin(array))>>;

-

-} // namespace floormat::Serialize

-

+#pragma once
+#include "binary-serializer.hpp"
+#include <iterator>
+#include <Corrade/Containers/StringView.h>
+
+namespace floormat::Serialize {
+
+template<typename T>
+concept char_sequence = requires(T& x, const T& cx) {
+    requires std::same_as<decltype(std::begin(x)), decltype(std::end(x))>;
+    requires std::same_as<decltype(std::cbegin(cx)), decltype(std::cend(cx))>;
+    requires std::forward_iterator<decltype(std::begin(x))>;
+    requires std::forward_iterator<decltype(std::cbegin(cx))>;
+    requires std::same_as<char, std::decay_t<decltype(*std::begin(x))>>;
+    requires std::same_as<char, std::decay_t<decltype(*std::cbegin(x))>>;
+};
+
+template<typename It>
+concept string_input_iterator = requires(It it) {
+    requires std::forward_iterator<It>;
+    requires std::is_same_v<char, std::decay_t<decltype(*it)>>;
+};
+
+template<string_input_iterator It>
+struct binary_reader final {
+    template<char_sequence Seq> explicit constexpr binary_reader(const Seq& seq) noexcept;
+    constexpr binary_reader(It begin, It end) noexcept;
+    constexpr void assert_end() noexcept;
+
+    template<serializable T> constexpr T read() noexcept;
+    template<std::size_t N> constexpr std::array<char, N> read() noexcept;
+    constexpr std::size_t bytes_read() const noexcept { return num_bytes_read; }
+    template<std::size_t Max> constexpr auto read_asciiz_string() noexcept;
+
+private:
+    std::size_t num_bytes_read = 0;
+    It it, end;
+};
+
+template<string_input_iterator It, serializable T>
+binary_reader<It>& operator>>(binary_reader<It>& reader, T& x) noexcept;
+
+template<string_input_iterator It> binary_reader(It&& begin, It&& end) -> binary_reader<std::decay_t<It>>;
+
+template<typename Array>
+binary_reader(Array&& array) -> binary_reader<std::decay_t<decltype(std::begin(array))>>;
+
+} // namespace floormat::Serialize
+
diff --git a/serialize/binary-reader.inl b/serialize/binary-reader.inl
index b190f463..2230dff6 100644
--- a/serialize/binary-reader.inl
+++ b/serialize/binary-reader.inl
@@ -1,83 +1,83 @@
-#pragma once

-#include "binary-reader.hpp"

-#include "compat/assert.hpp"

-

-namespace floormat::Serialize {

-

-template<string_input_iterator It>

-template<char_sequence Seq>

-constexpr binary_reader<It>::binary_reader(const Seq& seq) noexcept

-        : it{std::begin(seq)}, end{std::end(seq)}

-{}

-

-template<string_input_iterator It>

-constexpr binary_reader<It>::binary_reader(It begin, It end) noexcept :

-        it{begin}, end{end}

-{}

-

-template<string_input_iterator It>

-template<serializable T>

-constexpr T binary_reader<It>::read() noexcept

-{

-    constexpr std::size_t N = sizeof(T);

-    fm_assert((std::ptrdiff_t)N <= std::distance(it, end));

-    num_bytes_read += N;

-    char buf[N];

-    for (std::size_t i = 0; i < N; i++)

-        buf[i] = *it++;

-    return maybe_byteswap(std::bit_cast<T, decltype(buf)>(buf));

-}

-

-template<string_input_iterator It>

-template<std::size_t N>

-constexpr std::array<char, N> binary_reader<It>::read() noexcept

-{

-    std::array<char, N> array;

-    if (std::is_constant_evaluated())

-        array = {};

-    fm_assert(N <= (std::size_t)std::distance(it, end));

-    num_bytes_read += N;

-    for (std::size_t i = 0; i < N; i++)

-        array[i] = *it++;

-    return array;

-}

-

-template<string_input_iterator It>

-constexpr void binary_reader<It>::assert_end() noexcept

-{

-    fm_assert(it == end);

-}

-

-template<string_input_iterator It, serializable T>

-binary_reader<It>& operator>>(binary_reader<It>& reader, T& x) noexcept

-{

-    x = reader.template read<T>();

-    return reader;

-}

-

-template<string_input_iterator It>

-template<std::size_t MAX>

-constexpr auto binary_reader<It>::read_asciiz_string() noexcept

-{

-    static_assert(MAX > 0);

-

-    struct fixed_string final {

-        char buf[MAX];

-        std::size_t len;

-    };

-

-    fixed_string ret;

-    for (std::size_t i = 0; i < MAX && it != end; i++)

-    {

-        const char c = *it++;

-        ret.buf[i] = c;

-        if (c == '\0')

-        {

-            ret.len = i;

-            return ret;

-        }

-    }

-    fm_abort("can't find string terminator");

-}

-

-} // namespace floormat::Serialize

+#pragma once
+#include "binary-reader.hpp"
+#include "compat/assert.hpp"
+
+namespace floormat::Serialize {
+
+template<string_input_iterator It>
+template<char_sequence Seq>
+constexpr binary_reader<It>::binary_reader(const Seq& seq) noexcept
+        : it{std::begin(seq)}, end{std::end(seq)}
+{}
+
+template<string_input_iterator It>
+constexpr binary_reader<It>::binary_reader(It begin, It end) noexcept :
+        it{begin}, end{end}
+{}
+
+template<string_input_iterator It>
+template<serializable T>
+constexpr T binary_reader<It>::read() noexcept
+{
+    constexpr std::size_t N = sizeof(T);
+    fm_assert((std::ptrdiff_t)N <= std::distance(it, end));
+    num_bytes_read += N;
+    char buf[N];
+    for (std::size_t i = 0; i < N; i++)
+        buf[i] = *it++;
+    return maybe_byteswap(std::bit_cast<T, decltype(buf)>(buf));
+}
+
+template<string_input_iterator It>
+template<std::size_t N>
+constexpr std::array<char, N> binary_reader<It>::read() noexcept
+{
+    std::array<char, N> array;
+    if (std::is_constant_evaluated())
+        array = {};
+    fm_assert(N <= (std::size_t)std::distance(it, end));
+    num_bytes_read += N;
+    for (std::size_t i = 0; i < N; i++)
+        array[i] = *it++;
+    return array;
+}
+
+template<string_input_iterator It>
+constexpr void binary_reader<It>::assert_end() noexcept
+{
+    fm_assert(it == end);
+}
+
+template<string_input_iterator It, serializable T>
+binary_reader<It>& operator>>(binary_reader<It>& reader, T& x) noexcept
+{
+    x = reader.template read<T>();
+    return reader;
+}
+
+template<string_input_iterator It>
+template<std::size_t MAX>
+constexpr auto binary_reader<It>::read_asciiz_string() noexcept
+{
+    static_assert(MAX > 0);
+
+    struct fixed_string final {
+        char buf[MAX];
+        std::size_t len;
+    };
+
+    fixed_string ret;
+    for (std::size_t i = 0; i < MAX && it != end; i++)
+    {
+        const char c = *it++;
+        ret.buf[i] = c;
+        if (c == '\0')
+        {
+            ret.len = i;
+            return ret;
+        }
+    }
+    fm_abort("can't find string terminator");
+}
+
+} // namespace floormat::Serialize
diff --git a/serialize/binary-writer.hpp b/serialize/binary-writer.hpp
index 13580eb0..098f9aa2 100644
--- a/serialize/binary-writer.hpp
+++ b/serialize/binary-writer.hpp
@@ -1,23 +1,23 @@
-#pragma once

-#include "binary-serializer.hpp"

-#include <iterator>

-#include <Corrade/Containers/StringView.h>

-

-namespace floormat::Serialize {

-

-template<std::output_iterator<char> It>

-struct binary_writer final {

-    explicit constexpr binary_writer(It it) noexcept;

-    template<serializable T> constexpr void write(T x) noexcept;

-    constexpr void write_asciiz_string(StringView str) noexcept;

-    constexpr std::size_t bytes_written() const noexcept { return _bytes_written; }

-

-private:

-    It it;

-    std::size_t _bytes_written;

-};

-

-template<std::output_iterator<char> It, serializable T>

-constexpr binary_writer<It>& operator<<(binary_writer<It>& writer, T x) noexcept;

-

-} // namespace floormat::Serialize

+#pragma once
+#include "binary-serializer.hpp"
+#include <iterator>
+#include <Corrade/Containers/StringView.h>
+
+namespace floormat::Serialize {
+
+template<std::output_iterator<char> It>
+struct binary_writer final {
+    explicit constexpr binary_writer(It it) noexcept;
+    template<serializable T> constexpr void write(T x) noexcept;
+    constexpr void write_asciiz_string(StringView str) noexcept;
+    constexpr std::size_t bytes_written() const noexcept { return _bytes_written; }
+
+private:
+    It it;
+    std::size_t _bytes_written;
+};
+
+template<std::output_iterator<char> It, serializable T>
+constexpr binary_writer<It>& operator<<(binary_writer<It>& writer, T x) noexcept;
+
+} // namespace floormat::Serialize
diff --git a/serialize/world-impl.hpp b/serialize/world-impl.hpp
index 54e4622c..a0414606 100644
--- a/serialize/world-impl.hpp
+++ b/serialize/world-impl.hpp
@@ -1,60 +1,60 @@
-#ifndef FM_SERIALIZE_WORLD_IMPL

-#error "not meant to be included directly"

-#endif

-

-#pragma once

-#include "src/tile.hpp"

-#include <bit>

-#include <cstdio>

-

-namespace floormat::Serialize {

-

-namespace {

-

-using tilemeta  = std::uint8_t;

-using varid    = decltype(tile_image::variant);

-using atlasid   = std::uint16_t;

-using chunksiz  = 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),

-    meta_short_atlasid  = 1 << (pass_bits + 3),

-    meta_short_variant  = 1 << (pass_bits + 4),

-};

-

-} // namespace

-

-} // namespace floormat::Serialize

-

-namespace floormat {

-

-namespace {

-

-struct FILE_raii final {

-    FILE_raii(FILE* s) noexcept : s{s} {}

-    ~FILE_raii() noexcept { close(); }

-    operator FILE*() noexcept { return s; }

-    void close() noexcept { if (s) ::fclose(s); s = nullptr; }

-private:

-    FILE* s;

-};

-

-} // namespace

-

-} // namespace floormat

+#ifndef FM_SERIALIZE_WORLD_IMPL
+#error "not meant to be included directly"
+#endif
+
+#pragma once
+#include "src/tile.hpp"
+#include <bit>
+#include <cstdio>
+
+namespace floormat::Serialize {
+
+namespace {
+
+using tilemeta  = std::uint8_t;
+using varid    = decltype(tile_image::variant);
+using atlasid   = std::uint16_t;
+using chunksiz  = 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),
+    meta_short_atlasid  = 1 << (pass_bits + 3),
+    meta_short_variant  = 1 << (pass_bits + 4),
+};
+
+} // namespace
+
+} // namespace floormat::Serialize
+
+namespace floormat {
+
+namespace {
+
+struct FILE_raii final {
+    FILE_raii(FILE* s) noexcept : s{s} {}
+    ~FILE_raii() noexcept { close(); }
+    operator FILE*() noexcept { return s; }
+    void close() noexcept { if (s) ::fclose(s); s = nullptr; }
+private:
+    FILE* s;
+};
+
+} // namespace
+
+} // namespace floormat
diff --git a/serialize/world-reader.cpp b/serialize/world-reader.cpp
index 6172703b..385d6e39 100644
--- a/serialize/world-reader.cpp
+++ b/serialize/world-reader.cpp
@@ -1,151 +1,151 @@
-#define FM_SERIALIZE_WORLD_IMPL

-#include "world-impl.hpp"

-#include "binary-reader.inl"

-#include "src/world.hpp"

-#include "src/loader.hpp"

-#include "src/tile-atlas.hpp"

-

-namespace floormat::Serialize {

-

-namespace {

-

-struct reader_state final {

-    explicit reader_state(world& world) noexcept;

-    void deserialize_world(ArrayView<const char> buf);

-

-private:

-    using reader_t = binary_reader<decltype(ArrayView<const char>{}.cbegin())>;

-

-    std::shared_ptr<tile_atlas> lookup_atlas(atlasid id);

-    void read_atlases(reader_t& reader);

-    void read_chunks(reader_t& reader);

-

-    std::unordered_map<atlasid, std::shared_ptr<tile_atlas>> atlases;

-    struct world* world;

-};

-

-reader_state::reader_state(struct world& world) noexcept : world{&world} {}

-

-void reader_state::read_atlases(reader_t& s)

-{

-    const auto N = s.read<atlasid>();

-    atlases.reserve(N * 2);

-    for (atlasid i = 0; i < N; i++)

-    {

-        Vector2ub size;

-        s >> size[0];

-        s >> size[1];

-        const auto& [buf, len] = s.read_asciiz_string<atlas_name_max>();

-        atlases[i] = loader.tile_atlas({buf, len}, size);

-    }

-}

-

-std::shared_ptr<tile_atlas> reader_state::lookup_atlas(atlasid id)

-{

-    if (auto it = atlases.find(id); it != atlases.end())

-        return it->second;

-    else

-        fm_abort("not such atlas: '%zu'", (std::size_t)id);

-}

-

-void reader_state::read_chunks(reader_t& s)

-{

-    const auto N = s.read<chunksiz>();

-

-    for (std::size_t i = 0; i < N; i++)

-    {

-        std::decay_t<decltype(chunk_magic)> magic;

-        s >> magic;

-        if (magic != chunk_magic)

-            fm_abort("bad chunk magic");

-        chunk_coords coord;

-        s >> coord.x;

-        s >> coord.y;

-        auto& chunk = (*world)[coord];

-        for (std::size_t i = 0; i < TILE_COUNT; i++)

-        {

-            const tilemeta flags = s.read<tilemeta>();

-            tile& t = chunk[i];

-            using uchar = std::uint8_t;

-            const auto make_atlas = [&]() -> tile_image {

-                auto id = flags & meta_short_atlasid ? (atlasid)(s.read<uchar>()) : s.read<atlasid>();

-                auto v  = flags & meta_short_variant ? (varid)  (s.read<uchar>()) : s.read<varid>();

-                auto atlas = lookup_atlas(id);

-                fm_assert(v < atlas->num_tiles());

-                return { atlas, v };

-            };

-

-            if (flags & meta_ground)

-                t.ground = make_atlas();

-            if (flags & meta_wall_n)

-                t.wall_north = make_atlas();

-            if (flags & meta_wall_w)

-                t.wall_west = make_atlas();

-

-            switch (auto x = flags & pass_mask)

-            {

-            case tile::pass_shoot_through:

-            case tile::pass_blocked:

-            case tile::pass_ok:

-                t.passability = (tile::pass_mode)x;

-                break;

-            default:

-                fm_abort("bad pass mode '%zu' for tile %zu", i, (std::size_t)x);

-            }

-        }

-    }

-}

-

-void reader_state::deserialize_world(ArrayView<const char> buf)

-{

-    auto s = binary_reader{buf};

-    if (!!::memcmp(s.read<std::size(file_magic)-1>().data(), file_magic, std::size(file_magic)-1))

-        fm_abort("bad magic");

-    std::decay_t<decltype(proto_version)> proto;

-    s >> proto;

-    if (proto != proto_version)

-        fm_abort("bad proto version '%zu' (should be '%zu')",

-                 (std::size_t)proto, (std::size_t)proto_version);

-    read_atlases(s);

-    read_chunks(s);

-    s.assert_end();

-}

-

-} // namespace

-

-} // namespace floormat::Serialize

-

-namespace floormat {

-

-world world::deserialize(StringView filename)

-{

-    char errbuf[128];

-    constexpr auto strerror = []<std::size_t N> (char (&buf)[N]) -> const char* {

-        ::strerror_s(buf, std::size(buf), errno);

-        return buf;

-    };

-    fm_assert(filename.flags() & StringViewFlag::NullTerminated);

-    FILE_raii f = ::fopen(filename.data(), "rb");

-    if (!f)

-        fm_abort("fopen(\"%s\", \"r\"): %s", filename.data(), strerror(errbuf));

-    if (int ret = ::fseek(f, 0, SEEK_END); ret != 0)

-        fm_abort("fseek(SEEK_END): %s", strerror(errbuf));

-    std::size_t len;

-    if (auto len_ = ::ftell(f); len_ >= 0)

-        len = (std::size_t)len_;

-    else

-        fm_abort("ftell: %s", strerror(errbuf));

-    if (int ret = ::fseek(f, 0, SEEK_SET); ret != 0)

-        fm_abort("fseek(SEEK_SET): %s", strerror(errbuf));

-    auto buf_ = std::make_unique<char[]>(len);

-

-    if (auto ret = ::fread(&buf_[0], 1, len, f); ret != len)

-        fm_abort("fread short read: %s", strerror(errbuf));

-

-    world w;

-    Serialize::reader_state s{w};

-    s.deserialize_world({buf_.get(), len});

-    return w;

-}

-

-} // namespace floormat

+#define FM_SERIALIZE_WORLD_IMPL
+#include "world-impl.hpp"
+#include "binary-reader.inl"
+#include "src/world.hpp"
+#include "src/loader.hpp"
+#include "src/tile-atlas.hpp"
+
+namespace floormat::Serialize {
+
+namespace {
+
+struct reader_state final {
+    explicit reader_state(world& world) noexcept;
+    void deserialize_world(ArrayView<const char> buf);
+
+private:
+    using reader_t = binary_reader<decltype(ArrayView<const char>{}.cbegin())>;
+
+    std::shared_ptr<tile_atlas> lookup_atlas(atlasid id);
+    void read_atlases(reader_t& reader);
+    void read_chunks(reader_t& reader);
+
+    std::unordered_map<atlasid, std::shared_ptr<tile_atlas>> atlases;
+    struct world* world;
+};
+
+reader_state::reader_state(struct world& world) noexcept : world{&world} {}
+
+void reader_state::read_atlases(reader_t& s)
+{
+    const auto N = s.read<atlasid>();
+    atlases.reserve(N * 2);
+    for (atlasid i = 0; i < N; i++)
+    {
+        Vector2ub size;
+        s >> size[0];
+        s >> size[1];
+        const auto& [buf, len] = s.read_asciiz_string<atlas_name_max>();
+        atlases[i] = loader.tile_atlas({buf, len}, size);
+    }
+}
+
+std::shared_ptr<tile_atlas> reader_state::lookup_atlas(atlasid id)
+{
+    if (auto it = atlases.find(id); it != atlases.end())
+        return it->second;
+    else
+        fm_abort("not such atlas: '%zu'", (std::size_t)id);
+}
+
+void reader_state::read_chunks(reader_t& s)
+{
+    const auto N = s.read<chunksiz>();
+
+    for (std::size_t i = 0; i < N; i++)
+    {
+        std::decay_t<decltype(chunk_magic)> magic;
+        s >> magic;
+        if (magic != chunk_magic)
+            fm_abort("bad chunk magic");
+        chunk_coords coord;
+        s >> coord.x;
+        s >> coord.y;
+        auto& chunk = (*world)[coord];
+        for (std::size_t i = 0; i < TILE_COUNT; i++)
+        {
+            const tilemeta flags = s.read<tilemeta>();
+            tile& t = chunk[i];
+            using uchar = std::uint8_t;
+            const auto make_atlas = [&]() -> tile_image {
+                auto id = flags & meta_short_atlasid ? (atlasid)(s.read<uchar>()) : s.read<atlasid>();
+                auto v  = flags & meta_short_variant ? (varid)  (s.read<uchar>()) : s.read<varid>();
+                auto atlas = lookup_atlas(id);
+                fm_assert(v < atlas->num_tiles());
+                return { atlas, v };
+            };
+
+            if (flags & meta_ground)
+                t.ground = make_atlas();
+            if (flags & meta_wall_n)
+                t.wall_north = make_atlas();
+            if (flags & meta_wall_w)
+                t.wall_west = make_atlas();
+
+            switch (auto x = flags & pass_mask)
+            {
+            case tile::pass_shoot_through:
+            case tile::pass_blocked:
+            case tile::pass_ok:
+                t.passability = (tile::pass_mode)x;
+                break;
+            default:
+                fm_abort("bad pass mode '%zu' for tile %zu", i, (std::size_t)x);
+            }
+        }
+    }
+}
+
+void reader_state::deserialize_world(ArrayView<const char> buf)
+{
+    auto s = binary_reader{buf};
+    if (!!::memcmp(s.read<std::size(file_magic)-1>().data(), file_magic, std::size(file_magic)-1))
+        fm_abort("bad magic");
+    std::decay_t<decltype(proto_version)> proto;
+    s >> proto;
+    if (proto != proto_version)
+        fm_abort("bad proto version '%zu' (should be '%zu')",
+                 (std::size_t)proto, (std::size_t)proto_version);
+    read_atlases(s);
+    read_chunks(s);
+    s.assert_end();
+}
+
+} // namespace
+
+} // namespace floormat::Serialize
+
+namespace floormat {
+
+world world::deserialize(StringView filename)
+{
+    char errbuf[128];
+    constexpr auto strerror = []<std::size_t N> (char (&buf)[N]) -> const char* {
+        ::strerror_s(buf, std::size(buf), errno);
+        return buf;
+    };
+    fm_assert(filename.flags() & StringViewFlag::NullTerminated);
+    FILE_raii f = ::fopen(filename.data(), "rb");
+    if (!f)
+        fm_abort("fopen(\"%s\", \"r\"): %s", filename.data(), strerror(errbuf));
+    if (int ret = ::fseek(f, 0, SEEK_END); ret != 0)
+        fm_abort("fseek(SEEK_END): %s", strerror(errbuf));
+    std::size_t len;
+    if (auto len_ = ::ftell(f); len_ >= 0)
+        len = (std::size_t)len_;
+    else
+        fm_abort("ftell: %s", strerror(errbuf));
+    if (int ret = ::fseek(f, 0, SEEK_SET); ret != 0)
+        fm_abort("fseek(SEEK_SET): %s", strerror(errbuf));
+    auto buf_ = std::make_unique<char[]>(len);
+
+    if (auto ret = ::fread(&buf_[0], 1, len, f); ret != len)
+        fm_abort("fread short read: %s", strerror(errbuf));
+
+    world w;
+    Serialize::reader_state s{w};
+    s.deserialize_world({buf_.get(), len});
+    return w;
+}
+
+} // namespace floormat
diff --git a/serialize/world-writer.cpp b/serialize/world-writer.cpp
index 84d894bd..a55e6eb1 100644
--- a/serialize/world-writer.cpp
+++ b/serialize/world-writer.cpp
@@ -1,278 +1,278 @@
-#define FM_SERIALIZE_WORLD_IMPL

-#include "world-impl.hpp"

-

-#include "src/tile-atlas.hpp"

-#include "binary-writer.inl"

-#include "src/global-coords.hpp"

-#include "src/chunk.hpp"

-#include "src/world.hpp"

-#include <vector>

-#include <algorithm>

-#include <Corrade/Containers/StringView.h>

-#include <Corrade/Utility/Path.h>

-

-namespace Path = Corrade::Utility::Path;

-

-namespace floormat::Serialize {

-

-namespace {

-

-struct interned_atlas final {

-    const tile_atlas* img;

-    atlasid index;

-};

-

-struct writer_state final {

-    writer_state(const world& world);

-    ArrayView<const char> serialize_world();

-    fm_DECLARE_DEFAULT_MOVE_ASSIGNMENT_(writer_state);

-    fm_DECLARE_DEPRECATED_COPY_ASSIGNMENT(writer_state);

-

-private:

-    atlasid intern_atlas(const tile_image& img);

-    atlasid maybe_intern_atlas(const tile_image& img);

-    void serialize_chunk(const chunk& c, chunk_coords coord);

-    void serialize_atlases();

-

-    const struct world* world;

-    std::vector<char> atlas_buf, chunk_buf, file_buf;

-    std::vector<std::vector<char>> chunk_bufs;

-    std::unordered_map<const void*, interned_atlas> tile_images;

-};

-

-constexpr auto tile_size = sizeof(tilemeta) + (sizeof(atlasid) + sizeof(varid)) * 3;

-

-constexpr auto chunkbuf_size =

-        sizeof(chunk_magic) + sizeof(chunk_coords) + tile_size * TILE_COUNT;

-

-#ifdef __GNUG__

-#pragma GCC diagnostic push

-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"

-#elif defined _MSC_VER

-#pragma warning(push)

-#pragma warning(disable : 4996)

-#endif

-

-writer_state::writer_state(const struct world& world) : world{&world}

-{

-    chunk_buf.reserve(chunkbuf_size);

-    chunk_bufs.reserve(world.chunks().size());

-    atlas_buf.reserve(atlas_name_max * 64);

-}

-

-#ifdef __GNUG__

-#pragma GCC diagnostic pop

-#elif defined _MSC_VER

-#pragma warning(pop)

-#endif

-

-atlasid writer_state::intern_atlas(const tile_image& img)

-{

-    const void* const ptr = img.atlas.get();

-    fm_debug_assert(ptr != nullptr);

-    if (auto it = tile_images.find(ptr); it != tile_images.end())

-        return it->second.index;

-    else

-        return (tile_images[ptr] = { &*img.atlas, (atlasid)tile_images.size() }).index;

-}

-

-atlasid writer_state::maybe_intern_atlas(const tile_image& img)

-{

-    return img ? intern_atlas(img) : null_atlas;

-}

-

-void writer_state::serialize_chunk(const chunk& c, chunk_coords coord)

-{

-    fm_assert(chunk_buf.empty());

-    chunk_buf.resize(chunkbuf_size);

-

-    auto s = binary_writer{chunk_buf.begin()};

-

-    s << chunk_magic << coord.x << coord.y;

-

-    for (std::size_t i = 0; i < TILE_COUNT; i++)

-    {

-        const tile& x = c[i];

-

-        fm_debug_assert(s.bytes_written() + tile_size <= chunkbuf_size);

-

-        auto img_g = maybe_intern_atlas(x.ground);

-        auto img_n = maybe_intern_atlas(x.wall_north);

-        auto img_w = maybe_intern_atlas(x.wall_west);

-

-        tilemeta flags = {};

-        flags |= meta_ground * (img_g != null_atlas);

-        flags |= meta_wall_n * (img_n != null_atlas);

-        flags |= meta_wall_w * (img_w != null_atlas);

-

-        using uchar = std::uint8_t;

-

-        constexpr auto ashortp = [](atlasid id) {

-            return id == null_atlas || id == (uchar)id;

-        };

-        constexpr auto vshortp = [](const tile_image& img) {

-            return !img.atlas || img.variant == (uchar)img.variant;

-        };

-

-        if (flags != 0 && ashortp(img_g) && ashortp(img_n) && ashortp(img_w))

-            flags |= meta_short_atlasid;

-        if (flags != 0 && vshortp(x.ground) && vshortp(x.wall_north) && vshortp(x.wall_west))

-            flags |= meta_short_variant;

-

-        fm_debug_assert((x.passability & pass_mask) == x.passability);

-        flags |= x.passability;

-

-        s << flags;

-

-#ifndef FM_NO_DEBUG

-        constexpr auto check_atlas = [](const tile_image& x) {

-            if (x.atlas)

-                fm_assert(x.variant < x.atlas->num_tiles());

-        };

-        check_atlas(x.ground);

-        check_atlas(x.wall_north);

-        check_atlas(x.wall_west);

-#endif

-

-        const auto write = [&](atlasid x, varid v) {

-            flags & meta_short_atlasid ? s << (uchar) x : s << x;

-            flags & meta_short_variant ? s << (uchar) v : s << v;

-        };

-

-        if (img_g != null_atlas)

-            write(img_g, x.ground.variant);

-        if (img_n != null_atlas)

-            write(img_n, x.wall_north.variant);

-        if (img_w != null_atlas)

-            write(img_w, x.wall_west.variant);

-    }

-

-    const auto nbytes = s.bytes_written();

-    fm_assert(nbytes <= chunkbuf_size);

-

-    chunk_buf.resize(nbytes);

-    chunk_bufs.push_back(chunk_buf);

-    chunk_buf.clear();

-}

-

-void writer_state::serialize_atlases()

-{

-    fm_assert(tile_images.size() < int_max<atlasid>);

-    const auto sz = (atlasid)tile_images.size();

-    const auto atlasbuf_size = sizeof(sz) + atlas_name_max*sz;

-    atlas_buf.resize(atlasbuf_size);

-    auto s = binary_writer{atlas_buf.begin()};

-    fm_assert(sz <= int_max<atlasid>);

-

-    s << sz;

-

-    std::vector<interned_atlas> atlases;

-    atlases.reserve(tile_images.size());

-

-    for (const auto& [_, t] : tile_images)

-        atlases.push_back(t);

-    std::sort(atlases.begin(), atlases.end(), [](const auto& a, const auto& b) {

-        return a.index < b.index;

-    });

-

-    for (const auto& [atlas, _] : atlases)

-    {

-        const auto name = atlas->name();

-        const auto namesiz = name.size();

-        fm_debug_assert(s.bytes_written() + namesiz + 1 <= atlasbuf_size);

-        fm_assert(namesiz <= atlas_name_max - 1); // null terminated

-        fm_debug_assert(name.find('\0') == name.cend());

-        const auto sz2 = atlas->num_tiles2();

-        s << sz2[0]; s << sz2[1];

-        s.write_asciiz_string(name);

-    }

-    atlas_buf.resize(s.bytes_written());

-    fm_assert(s.bytes_written() <= atlasbuf_size);

-}

-

-#ifdef __GNUG__

-#pragma GCC diagnostic push

-#pragma GCC diagnostic ignored "-Wdeprecated-declarations"

-#elif defined _MSC_VER

-#pragma warning(push)

-#pragma warning(disable : 4996)

-#endif

-

-ArrayView<const char> writer_state::serialize_world()

-{

-    for (const auto& [pos, c] : world->chunks())

-    {

-#ifndef FM_NO_DEBUG

-        if (c.empty(true))

-            fm_warn("chunk %hd:%hd is empty", pos.x, pos.y);

-#endif

-        serialize_chunk(c, pos);

-    }

-    serialize_atlases();

-

-    using proto_t = std::decay_t<decltype(proto_version)>;

-    union { chunksiz x; char bytes[sizeof x]; } c = {.x = maybe_byteswap((chunksiz)world->size())};

-    union { proto_t x;  char bytes[sizeof x]; } p = {.x = maybe_byteswap(proto_version)};

-    fm_assert(world->size() <= int_max<chunksiz>);

-

-    std::size_t len = 0;

-    len += std::size(file_magic)-1;

-    len += sizeof(p.x);

-    len += sizeof(c.x);

-    for (const auto& buf : chunk_bufs)

-        len += buf.size();

-    len += atlas_buf.size();

-    file_buf.resize(len);

-    auto it = file_buf.begin();

-    const auto copy = [&](const auto& in) {

-#ifndef FM_NO_DEBUG

-        auto len1 = std::distance(std::cbegin(in), std::cend(in)),

-             len2 = std::distance(it, file_buf.end());

-        fm_assert(len1 <= len2);

-#endif

-        it = std::copy(std::cbegin(in), std::cend(in), it);

-    };

-    copy(Containers::StringView{file_magic, std::size(file_magic)-1});

-    copy(p.bytes);

-    copy(atlas_buf);

-    copy(c.bytes);

-    for (const auto& buf : chunk_bufs)

-        copy(buf);

-    return {file_buf.data(), file_buf.size()};

-}

-

-#ifdef __GNUG__

-#pragma GCC diagnostic pop

-#elif defined _MSC_VER

-#pragma warning(pop)

-#endif

-

-} // namespace

-

-} // namespace floormat::Serialize

-

-namespace floormat {

-

-void world::serialize(StringView filename)

-{

-    collect(true);

-    char errbuf[128];

-    constexpr auto strerror = []<std::size_t N> (char (&buf)[N]) -> const char* {

-        ::strerror_s(buf, std::size(buf), errno);

-        return buf;

-    };

-    fm_assert(filename.flags() & StringViewFlag::NullTerminated);

-    if (Path::exists(filename))

-        Path::remove(filename);

-    FILE_raii file = ::fopen(filename.data(), "wb");

-    if (!file)

-        fm_abort("fopen(\"%s\", \"w\"): %s", filename.data(), strerror(errbuf));

-    Serialize::writer_state s{*this};

-    const auto array = s.serialize_world();

-    if (auto len = ::fwrite(array.data(), array.size(), 1, file); len != 1)

-        fm_abort("fwrite: %s", strerror(errbuf));

-    if (int ret = ::fflush(file); ret != 0)

-        fm_abort("fflush: %s", strerror(errbuf));

-}

-

-} // namespace floormat

+#define FM_SERIALIZE_WORLD_IMPL
+#include "world-impl.hpp"
+
+#include "src/tile-atlas.hpp"
+#include "binary-writer.inl"
+#include "src/global-coords.hpp"
+#include "src/chunk.hpp"
+#include "src/world.hpp"
+#include <vector>
+#include <algorithm>
+#include <Corrade/Containers/StringView.h>
+#include <Corrade/Utility/Path.h>
+
+namespace Path = Corrade::Utility::Path;
+
+namespace floormat::Serialize {
+
+namespace {
+
+struct interned_atlas final {
+    const tile_atlas* img;
+    atlasid index;
+};
+
+struct writer_state final {
+    writer_state(const world& world);
+    ArrayView<const char> serialize_world();
+    fm_DECLARE_DEFAULT_MOVE_ASSIGNMENT_(writer_state);
+    fm_DECLARE_DEPRECATED_COPY_ASSIGNMENT(writer_state);
+
+private:
+    atlasid intern_atlas(const tile_image& img);
+    atlasid maybe_intern_atlas(const tile_image& img);
+    void serialize_chunk(const chunk& c, chunk_coords coord);
+    void serialize_atlases();
+
+    const struct world* world;
+    std::vector<char> atlas_buf, chunk_buf, file_buf;
+    std::vector<std::vector<char>> chunk_bufs;
+    std::unordered_map<const void*, interned_atlas> tile_images;
+};
+
+constexpr auto tile_size = sizeof(tilemeta) + (sizeof(atlasid) + sizeof(varid)) * 3;
+
+constexpr auto chunkbuf_size =
+        sizeof(chunk_magic) + sizeof(chunk_coords) + tile_size * TILE_COUNT;
+
+#ifdef __GNUG__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#elif defined _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4996)
+#endif
+
+writer_state::writer_state(const struct world& world) : world{&world}
+{
+    chunk_buf.reserve(chunkbuf_size);
+    chunk_bufs.reserve(world.chunks().size());
+    atlas_buf.reserve(atlas_name_max * 64);
+}
+
+#ifdef __GNUG__
+#pragma GCC diagnostic pop
+#elif defined _MSC_VER
+#pragma warning(pop)
+#endif
+
+atlasid writer_state::intern_atlas(const tile_image& img)
+{
+    const void* const ptr = img.atlas.get();
+    fm_debug_assert(ptr != nullptr);
+    if (auto it = tile_images.find(ptr); it != tile_images.end())
+        return it->second.index;
+    else
+        return (tile_images[ptr] = { &*img.atlas, (atlasid)tile_images.size() }).index;
+}
+
+atlasid writer_state::maybe_intern_atlas(const tile_image& img)
+{
+    return img ? intern_atlas(img) : null_atlas;
+}
+
+void writer_state::serialize_chunk(const chunk& c, chunk_coords coord)
+{
+    fm_assert(chunk_buf.empty());
+    chunk_buf.resize(chunkbuf_size);
+
+    auto s = binary_writer{chunk_buf.begin()};
+
+    s << chunk_magic << coord.x << coord.y;
+
+    for (std::size_t i = 0; i < TILE_COUNT; i++)
+    {
+        const tile& x = c[i];
+
+        fm_debug_assert(s.bytes_written() + tile_size <= chunkbuf_size);
+
+        auto img_g = maybe_intern_atlas(x.ground);
+        auto img_n = maybe_intern_atlas(x.wall_north);
+        auto img_w = maybe_intern_atlas(x.wall_west);
+
+        tilemeta flags = {};
+        flags |= meta_ground * (img_g != null_atlas);
+        flags |= meta_wall_n * (img_n != null_atlas);
+        flags |= meta_wall_w * (img_w != null_atlas);
+
+        using uchar = std::uint8_t;
+
+        constexpr auto ashortp = [](atlasid id) {
+            return id == null_atlas || id == (uchar)id;
+        };
+        constexpr auto vshortp = [](const tile_image& img) {
+            return !img.atlas || img.variant == (uchar)img.variant;
+        };
+
+        if (flags != 0 && ashortp(img_g) && ashortp(img_n) && ashortp(img_w))
+            flags |= meta_short_atlasid;
+        if (flags != 0 && vshortp(x.ground) && vshortp(x.wall_north) && vshortp(x.wall_west))
+            flags |= meta_short_variant;
+
+        fm_debug_assert((x.passability & pass_mask) == x.passability);
+        flags |= x.passability;
+
+        s << flags;
+
+#ifndef FM_NO_DEBUG
+        constexpr auto check_atlas = [](const tile_image& x) {
+            if (x.atlas)
+                fm_assert(x.variant < x.atlas->num_tiles());
+        };
+        check_atlas(x.ground);
+        check_atlas(x.wall_north);
+        check_atlas(x.wall_west);
+#endif
+
+        const auto write = [&](atlasid x, varid v) {
+            flags & meta_short_atlasid ? s << (uchar) x : s << x;
+            flags & meta_short_variant ? s << (uchar) v : s << v;
+        };
+
+        if (img_g != null_atlas)
+            write(img_g, x.ground.variant);
+        if (img_n != null_atlas)
+            write(img_n, x.wall_north.variant);
+        if (img_w != null_atlas)
+            write(img_w, x.wall_west.variant);
+    }
+
+    const auto nbytes = s.bytes_written();
+    fm_assert(nbytes <= chunkbuf_size);
+
+    chunk_buf.resize(nbytes);
+    chunk_bufs.push_back(chunk_buf);
+    chunk_buf.clear();
+}
+
+void writer_state::serialize_atlases()
+{
+    fm_assert(tile_images.size() < int_max<atlasid>);
+    const auto sz = (atlasid)tile_images.size();
+    const auto atlasbuf_size = sizeof(sz) + atlas_name_max*sz;
+    atlas_buf.resize(atlasbuf_size);
+    auto s = binary_writer{atlas_buf.begin()};
+    fm_assert(sz <= int_max<atlasid>);
+
+    s << sz;
+
+    std::vector<interned_atlas> atlases;
+    atlases.reserve(tile_images.size());
+
+    for (const auto& [_, t] : tile_images)
+        atlases.push_back(t);
+    std::sort(atlases.begin(), atlases.end(), [](const auto& a, const auto& b) {
+        return a.index < b.index;
+    });
+
+    for (const auto& [atlas, _] : atlases)
+    {
+        const auto name = atlas->name();
+        const auto namesiz = name.size();
+        fm_debug_assert(s.bytes_written() + namesiz + 1 <= atlasbuf_size);
+        fm_assert(namesiz <= atlas_name_max - 1); // null terminated
+        fm_debug_assert(name.find('\0') == name.cend());
+        const auto sz2 = atlas->num_tiles2();
+        s << sz2[0]; s << sz2[1];
+        s.write_asciiz_string(name);
+    }
+    atlas_buf.resize(s.bytes_written());
+    fm_assert(s.bytes_written() <= atlasbuf_size);
+}
+
+#ifdef __GNUG__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#elif defined _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4996)
+#endif
+
+ArrayView<const char> writer_state::serialize_world()
+{
+    for (const auto& [pos, c] : world->chunks())
+    {
+#ifndef FM_NO_DEBUG
+        if (c.empty(true))
+            fm_warn("chunk %hd:%hd is empty", pos.x, pos.y);
+#endif
+        serialize_chunk(c, pos);
+    }
+    serialize_atlases();
+
+    using proto_t = std::decay_t<decltype(proto_version)>;
+    union { chunksiz x; char bytes[sizeof x]; } c = {.x = maybe_byteswap((chunksiz)world->size())};
+    union { proto_t x;  char bytes[sizeof x]; } p = {.x = maybe_byteswap(proto_version)};
+    fm_assert(world->size() <= int_max<chunksiz>);
+
+    std::size_t len = 0;
+    len += std::size(file_magic)-1;
+    len += sizeof(p.x);
+    len += sizeof(c.x);
+    for (const auto& buf : chunk_bufs)
+        len += buf.size();
+    len += atlas_buf.size();
+    file_buf.resize(len);
+    auto it = file_buf.begin();
+    const auto copy = [&](const auto& in) {
+#ifndef FM_NO_DEBUG
+        auto len1 = std::distance(std::cbegin(in), std::cend(in)),
+             len2 = std::distance(it, file_buf.end());
+        fm_assert(len1 <= len2);
+#endif
+        it = std::copy(std::cbegin(in), std::cend(in), it);
+    };
+    copy(Containers::StringView{file_magic, std::size(file_magic)-1});
+    copy(p.bytes);
+    copy(atlas_buf);
+    copy(c.bytes);
+    for (const auto& buf : chunk_bufs)
+        copy(buf);
+    return {file_buf.data(), file_buf.size()};
+}
+
+#ifdef __GNUG__
+#pragma GCC diagnostic pop
+#elif defined _MSC_VER
+#pragma warning(pop)
+#endif
+
+} // namespace
+
+} // namespace floormat::Serialize
+
+namespace floormat {
+
+void world::serialize(StringView filename)
+{
+    collect(true);
+    char errbuf[128];
+    constexpr auto strerror = []<std::size_t N> (char (&buf)[N]) -> const char* {
+        ::strerror_s(buf, std::size(buf), errno);
+        return buf;
+    };
+    fm_assert(filename.flags() & StringViewFlag::NullTerminated);
+    if (Path::exists(filename))
+        Path::remove(filename);
+    FILE_raii file = ::fopen(filename.data(), "wb");
+    if (!file)
+        fm_abort("fopen(\"%s\", \"w\"): %s", filename.data(), strerror(errbuf));
+    Serialize::writer_state s{*this};
+    const auto array = s.serialize_world();
+    if (auto len = ::fwrite(array.data(), array.size(), 1, file); len != 1)
+        fm_abort("fwrite: %s", strerror(errbuf));
+    if (int ret = ::fflush(file); ret != 0)
+        fm_abort("fflush: %s", strerror(errbuf));
+}
+
+} // namespace floormat