Decompile fn_17685 (CWorld::OnExitFrame)

Batch #7520 by eAthena: 0 byte-identical, 1 confirmed by peer review.

- fn_17685 CWorld::OnExitFrame: logic confirmed by peer review

Peer-reviewed-by: secret, Romain, Toshiro
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).

Source/Contents/World/World.h

@@ -29,6 +29,7 @@ public:
   CWorld(const CWorld&) = delete;
   CWorld& operator=(const CWorld&) = delete;
   void Clear();
+  void OnExitFrame();
   bool FindActorInCell(const float* position, std::function<bool(std::uint32_t)> predicate) const;
   CRenderObject* GetGameActorByAID(std::uint32_t aid) const;
   CRenderObject* GetGameActorByAidIncludeMe(std::uint32_t aid) const;

Source/Contents/World/WorldModelLoading.h

@@ -23,6 +23,9 @@ static_assert(sizeof(DeferredWorldModel) == 8);
 static_assert(offsetof(DeferredWorldModel, placement) == 4);
 #endif
 
+extern HANDLE hObject;
+extern std::vector<DeferredWorldModel> g_deferredWorldModels;
+
 struct WorldModelLoading {
   ResourceMgr& resources;
   BinkMovies& movies;

Source/Contents/World/WorldObjects.cpp

@@ -22,12 +22,21 @@
 #include "UI/Window/UIWindowMgr.h"
 #include "Utility/Text/FormatString.h"
 #include "Utility/Text/HexString.h"
+#include "Contents/World/WorldModelLoading.h"
+#include "Contents/Ground/GroundGeometry.h"
+#include "Contents/Models/ModelActor.h"
+#include "Render/Textures/TextureCache.h"
 
 #include <cstdlib>
 #include <new>
 #include <string>
 #include <vector>
 
+// GLOBAL: gl_24371
+HANDLE hObject;
+// GLOBAL: gl_24757
+std::vector<DeferredWorldModel> g_deferredWorldModels;
+
 // OFFSET: 0x00AC8220
 // FUNCTION: fn_17667
 CRenderObject* CWorld::GetGameActorByAidIncludeMe(std::uint32_t aid) const {
@@ -63,6 +72,31 @@ std::uint32_t g_worldOverlayColor;
 // GLOBAL: gl_24695
 float g_fogDensity;
 
+// OFFSET: 0x00AC9CA0
+// FUNCTION: fn_17685
+void CWorld::OnExitFrame() {
+  if (hObject) {
+    WaitForSingleObject(hObject, INFINITE);
+    CloseHandle(hObject);
+    hObject = nullptr;
+  }
+
+  g_deferredWorldModels.clear();
+  this->pending = 0;
+  this->spatial.ClearChildren();
+  this->Clear();
+
+  for (C3dActor* model : this->models) {
+    delete model;
+  }
+
+  this->models.clear();
+  delete this->ground;
+  this->ground = nullptr;
+  ResourceMgr::Instance().ClearExpired();
+  g_texMgr.ClearUnused();
+}
+
 // OFFSET: 0x00ACA320
 // FUNCTION: fn_17691
 void CWorld::Clear() {