Start new save format

src/openrct2/ParkFile.cpp

@@ -0,0 +1,59 @@
+#include "ParkFile.h"
+#include "Version.h"
+
+using namespace OpenRCT2;
+
+constexpr uint32_t PARK_FILE_MAGIC = 0x4B526550; // PARK
+
+// Current version that is saved.
+constexpr uint32_t PARK_FILE_CURRENT_VERSION = 0x0;
+
+// The minimum version that is forwards compatible with the current version.
+constexpr uint32_t PARK_FILE_MIN_VERSION = 0x0;
+
+constexpr uint32_t COMPRESSION_NONE = 0;
+constexpr uint32_t COMPRESSION_GZIP = 1;
+
+namespace ParkFileChunkType
+{
+    // clang-format off
+    constexpr uint32_t RESERVED_0   = 0x00;
+    constexpr uint32_t AUTHORING    = 0x01;
+    constexpr uint32_t OBJECTS      = 0x02;
+    constexpr uint32_t SCENARIO     = 0x03;
+    constexpr uint32_t GENERAL      = 0x04;
+    constexpr uint32_t INTERFACE    = 0x05;
+    constexpr uint32_t CLIMATE      = 0x06;
+    constexpr uint32_t PARK         = 0x07;
+    constexpr uint32_t HISTORY      = 0x08;
+    constexpr uint32_t INVENTIONS   = 0x09;
+    constexpr uint32_t TILES        = 0x0A;
+    constexpr uint32_t THINGS       = 0x0B;
+    constexpr uint32_t RIDES        = 0x0C;
+    constexpr uint32_t BANNERS      = 0x0D;
+    constexpr uint32_t ANIMATIONS   = 0x0E;
+    constexpr uint32_t STAFF        = 0x0F;
+    constexpr uint32_t STRINGS      = 0x10;
+    constexpr uint32_t EDITOR       = 0x11;
+    constexpr uint32_t DERIVED      = 0x12;
+    // clang-format on
+}; // namespace ParkFileChunkType
+
+void ParkFile::Save(const std::string_view& path)
+{
+    _header = {};
+    _header.Magic = PARK_FILE_MAGIC;
+    _header.TargetVersion = PARK_FILE_CURRENT_VERSION;
+    _header.MinVersion = PARK_FILE_MIN_VERSION;
+    _header.Compression = COMPRESSION_NONE;
+}
+
+void ParkFile::WriteHeader(std::ostream& stream, const Header& header, const std::vector<ChunkEntry>& chunks)
+{
+    stream.seekp(0);
+    stream.write((const char*)&header, sizeof(header));
+    for (const auto& chunk : chunks)
+    {
+        stream.write((const char*)&chunk, sizeof(chunk));
+    }
+}

src/openrct2/ParkFile.h

@@ -0,0 +1,42 @@
+#include <cstdint>
+#include <fstream>
+#include <string_view>
+#include <vector>
+
+namespace OpenRCT2
+{
+    class ParkFile
+    {
+    public:
+        void Save(const std::string_view& path);
+
+    private:
+#pragma pack(push, 1)
+        struct Header
+        {
+            uint32_t Magic{};
+            uint32_t TargetVersion{};
+            uint32_t MinVersion{};
+            uint32_t NumChunks{};
+            uint64_t UncompressedSize{};
+            uint32_t Compression{};
+            uint8_t Sha1{};
+        };
+
+        struct ChunkEntry
+        {
+            uint32_t Id{};
+            uint64_t Offset{};
+            uint64_t Length{};
+        };
+#pragma pack(pop)
+
+        Header _header;
+        std::vector<ChunkEntry> _chunks;
+        ChunkEntry _currentChunk;
+
+        void WriteHeader(std::ostream& stream, const Header& header, const std::vector<ChunkEntry>& chunks);
+        void BeginChunk(std::ostream& stream);
+        uint64_t EndChunk();
+    };
+} // namespace OpenRCT2