Initial park save preview implementation

src/openrct2/ParkImporter.h

@@ -23,6 +23,7 @@ namespace OpenRCT2
 {
     struct IStream;
     struct GameState_t;
+    struct ParkPreview;
 } // namespace OpenRCT2
 
 struct ScenarioIndexEntry;
@@ -58,6 +59,7 @@ public:
 
     virtual void Import(OpenRCT2::GameState_t& gameState) = 0;
     virtual bool PopulateIndexEntry(ScenarioIndexEntry* dst) = 0;
+    virtual OpenRCT2::ParkPreview GetParkPreview() = 0;
 };
 
 namespace OpenRCT2::ParkImporter

src/openrct2/libopenrct2.vcxproj

@@ -391,6 +391,7 @@
     <ClInclude Include="ParkImporter.h" />
     <ClInclude Include="park\Legacy.h" />
     <ClInclude Include="park\ParkFile.h" />
+    <ClInclude Include="park\ParkPreview.h" />
     <ClInclude Include="peep\Guest.h" />
     <ClInclude Include="peep\GuestPathfinding.h" />
     <ClInclude Include="peep\PeepAnimations.h" />
@@ -1014,6 +1015,7 @@
     <ClCompile Include="ParkImporter.cpp" />
     <ClCompile Include="park\Legacy.cpp" />
     <ClCompile Include="park\ParkFile.cpp" />
+    <ClCompile Include="park\ParkPreview.cpp" />
     <ClCompile Include="peep\GuestPathfinding.cpp" />
     <ClCompile Include="peep\PeepAnimations.cpp" />
     <ClCompile Include="peep\PeepThoughts.cpp" />

src/openrct2/park/ParkFile.cpp

@@ -59,6 +59,7 @@
 #include "../world/tile_element/SmallSceneryElement.h"
 #include "../world/tile_element/TrackElement.h"
 #include "Legacy.h"
+#include "ParkPreview.h"
 
 #include <cassert>
 #include <cstdint>
@@ -94,6 +95,7 @@ namespace OpenRCT2
         constexpr uint32_t CHEATS               = 0x36;
         constexpr uint32_t RESTRICTED_OBJECTS   = 0x37;
         constexpr uint32_t PLUGIN_STORAGE       = 0x38;
+        constexpr uint32_t PREVIEW              = 0x39;
         constexpr uint32_t PACKED_OBJECTS       = 0x80;
         // clang-format on
     }; // namespace ParkFileChunkType
@@ -196,6 +198,7 @@ namespace OpenRCT2
             ReadWriteCheatsChunk(gameState, os);
             ReadWriteRestrictedObjectsChunk(gameState, os);
             ReadWritePluginStorageChunk(gameState, os);
+            ReadWritePreviewChunk(gameState, os);
             ReadWritePackedObjectsChunk(os);
         }
 
@@ -235,6 +238,24 @@ namespace OpenRCT2
             return entry;
         }
 
+        ParkPreview ReadPreviewChunk()
+        {
+            ParkPreview preview{};
+            auto& os = *_os;
+            os.ReadWriteChunk(ParkFileChunkType::PREVIEW, [&preview](OrcaStream::ChunkStream& cs) {
+                cs.ReadWrite(preview.parkName);
+                cs.ReadWrite(preview.parkRating);
+                cs.ReadWrite(preview.year);
+                cs.ReadWrite(preview.month);
+                cs.ReadWrite(preview.day);
+                cs.ReadWrite(preview.parkUsesMoney);
+                cs.ReadWrite(preview.cash);
+                cs.ReadWrite(preview.numRides);
+                cs.ReadWrite(preview.numGuests);
+            });
+            return preview;
+        }
+
     private:
         static uint8_t GetMinCarsPerTrain(uint8_t value)
         {
@@ -477,6 +498,23 @@ namespace OpenRCT2
             });
         }
 
+        void ReadWritePreviewChunk(GameState_t& gameState, OrcaStream& os)
+        {
+            os.ReadWriteChunk(ParkFileChunkType::PREVIEW, [&gameState](OrcaStream::ChunkStream& cs) {
+                auto preview = OpenRCT2::generatePreviewFromGameState(gameState);
+
+                cs.ReadWrite(preview.parkName);
+                cs.ReadWrite(preview.parkRating);
+                cs.ReadWrite(preview.year);
+                cs.ReadWrite(preview.month);
+                cs.ReadWrite(preview.day);
+                cs.ReadWrite(preview.parkUsesMoney);
+                cs.ReadWrite(preview.cash);
+                cs.ReadWrite(preview.numRides);
+                cs.ReadWrite(preview.numGuests);
+            });
+        }
+
         void ReadWriteGeneralChunk(GameState_t& gameState, OrcaStream& os)
         {
             const auto version = os.GetHeader().TargetVersion;
@@ -2745,6 +2783,11 @@ public:
         *dst = _parkFile->ReadScenarioChunk();
         return true;
     }
+
+    ParkPreview GetParkPreview() override
+    {
+        return _parkFile->ReadPreviewChunk();
+    }
 };
 
 std::unique_ptr<IParkImporter> ParkImporter::CreateParkFile(IObjectRepository& objectRepository)

src/openrct2/park/ParkFile.h

@@ -20,7 +20,7 @@ namespace OpenRCT2
     struct GameState_t;
 
     // Current version that is saved.
-    constexpr uint32_t kParkFileCurrentVersion = 51;
+    constexpr uint32_t kParkFileCurrentVersion = 52;
 
     // The minimum version that is forwards compatible with the current version.
     constexpr uint32_t kParkFileMinVersion = 51;
@@ -48,6 +48,7 @@ namespace OpenRCT2
     constexpr uint16_t kExtendedStandUpRollerCoasterVersion = 48;
     constexpr uint16_t kPeepAnimationObjectsVersion = 49;
     constexpr uint16_t kDiagonalLongFlatToSteepAndDiveLoopVersion = 50;
+    constexpr uint16_t kEmbeddedParkPreviewChunk = 52;
 } // namespace OpenRCT2
 
 class ParkFileExporter

src/openrct2/park/ParkPreview.cpp

@@ -0,0 +1,34 @@
+/*****************************************************************************
+ * Copyright (c) 2014-2025 OpenRCT2 developers
+ *
+ * For a complete list of all authors, please refer to contributors.md
+ * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
+ *
+ * OpenRCT2 is licensed under the GNU General Public License version 3.
+ *****************************************************************************/
+
+#include "ParkPreview.h"
+
+#include "../Context.h"
+#include "../GameState.h"
+#include "../ride/RideManager.hpp"
+
+namespace OpenRCT2
+{
+    ParkPreview generatePreviewFromGameState(const GameState_t& gameState)
+    {
+        ParkPreview preview{
+            .parkName = gameState.Park.Name,
+            .parkRating = gameState.Park.Rating,
+            .year = gameState.Date.GetYear(),
+            .month = gameState.Date.GetMonth(),
+            .day = gameState.Date.GetDay(),
+            .parkUsesMoney = !(gameState.Park.Flags & PARK_FLAGS_NO_MONEY),
+            .cash = gameState.Cash,
+            .numRides = static_cast<uint16_t>(RideManager().size()),
+            .numGuests = static_cast<uint16_t>(gameState.NumGuestsInPark),
+        };
+
+        return preview;
+    }
+} // namespace OpenRCT2

src/openrct2/park/ParkPreview.h

@@ -0,0 +1,35 @@
+/*****************************************************************************
+ * Copyright (c) 2014-2025 OpenRCT2 developers
+ *
+ * For a complete list of all authors, please refer to contributors.md
+ * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
+ *
+ * OpenRCT2 is licensed under the GNU General Public License version 3.
+ *****************************************************************************/
+
+#pragma once
+
+#include "../core/Money.hpp"
+
+#include <cstdint>
+#include <string>
+
+namespace OpenRCT2
+{
+    struct ParkPreview
+    {
+        std::string parkName{};
+        uint16_t parkRating{};
+        int32_t year{};
+        int32_t month{};
+        int32_t day{};
+        bool parkUsesMoney{ true };
+        money64 cash{};
+        uint16_t numRides{};
+        uint16_t numGuests{};
+    };
+
+    struct GameState_t;
+
+    ParkPreview generatePreviewFromGameState(const GameState_t& gameState);
+} // namespace OpenRCT2

src/openrct2/rct1/S4Importer.cpp

@@ -52,6 +52,7 @@
 #include "../object/PeepAnimationsObject.h"
 #include "../object/ScenarioTextObject.h"
 #include "../park/Legacy.h"
+#include "../park/ParkPreview.h"
 #include "../peep/RideUseSystem.h"
 #include "../rct12/CSStringConverter.h"
 #include "../rct12/EntryList.h"
@@ -289,6 +290,11 @@ namespace OpenRCT2::RCT1
             return true;
         }
 
+        ParkPreview GetParkPreview() override
+        {
+            return {};
+        }
+
         money64 CorrectRCT1ParkValue(money32 oldParkValue)
         {
             if (oldParkValue == kMoney32Undefined)

src/openrct2/rct2/S6Importer.cpp

@@ -52,6 +52,7 @@
 #include "../object/ScenarioTextObject.h"
 #include "../object/WallSceneryEntry.h"
 #include "../park/Legacy.h"
+#include "../park/ParkPreview.h"
 #include "../peep/RideUseSystem.h"
 #include "../rct12/CSStringConverter.h"
 #include "../rct12/EntryList.h"
@@ -314,6 +315,11 @@ namespace OpenRCT2::RCT2
             return true;
         }
 
+        ParkPreview GetParkPreview() override
+        {
+            return {};
+        }
+
         void Import(GameState_t& gameState) override
         {
             Initialise(gameState);