From 3261da535f8f5b3b52234a628a8b11b99bfae255 Mon Sep 17 00:00:00 2001
From: Ted John <ted@brambles.org>
Date: Tue, 16 Jul 2019 17:56:41 +0100
Subject: [PATCH] Derive some park variables

---
 src/openrct2/ParkFile.cpp | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/src/openrct2/ParkFile.cpp b/src/openrct2/ParkFile.cpp
index 8ec32d12a8..764d020dd9 100644
--- a/src/openrct2/ParkFile.cpp
+++ b/src/openrct2/ParkFile.cpp
@@ -115,6 +115,7 @@ namespace OpenRCT2
             String::Set(gS6Info.details, sizeof(gS6Info.details), gScenarioName.c_str());
 
             AutoCreateMapAnimations();
+            AutoDeriveVariables();
         }
 
         void Save(const std::string_view& path)
@@ -776,6 +777,34 @@ namespace OpenRCT2
             }
         }
 
+        void AutoDeriveVariables()
+        {
+            Peep* peep{};
+            uint16_t spriteIndex{};
+            uint16_t numGuestsInPark = 0;
+            uint16_t numGuestsHeadingsForPark = 0;
+            FOR_ALL_GUESTS (spriteIndex, peep)
+            {
+                if (peep->state == PEEP_STATE_ENTERING_PARK)
+                {
+                    numGuestsHeadingsForPark++;
+                }
+                if (!peep->outside_of_park)
+                {
+                    numGuestsInPark++;
+                }
+            }
+
+            gNumGuestsInPark = numGuestsInPark;
+            gNumGuestsHeadingForPark = numGuestsHeadingsForPark;
+
+            auto& park = GetContext()->GetGameState()->GetPark();
+            gParkSize = park.CalculateParkSize();
+            gParkValue = park.CalculateParkValue();
+            gCompanyValue = park.CalculateCompanyValue();
+            gParkRating = park.CalculateParkRating();
+        }
+
         static void ReadWriteStringTable(OrcaStream::ChunkStream& cs, std::string& value, const std::string_view& lcode)
         {
             std::vector<std::tuple<std::string, std::string>> table;