feat(world): implement CWorldParam::FarClipCallback

src/world/CWorld.cpp

@@ -2,6 +2,7 @@
 #include "gx/Gx.hpp"
 #include "gx/Shader.hpp"
 #include "model/Model2.hpp"
+#include "world/CWorldParam.hpp"
 #include "world/Map.hpp"
 #include "world/Weather.hpp"
 #include <storm/Memory.hpp>
@@ -15,11 +16,31 @@ uint32_t CWorld::s_gameTimeFixed;
 float CWorld::s_gameTimeSec;
 CM2Scene* CWorld::s_m2Scene;
 float CWorld::s_nearClip = 0.1f;
+float CWorld::s_prevFarClip;
 uint32_t CWorld::s_tickTimeFixed;
 uint32_t CWorld::s_tickTimeMs;
 float CWorld::s_tickTimeSec;
 Weather* CWorld::s_weather;
 
+namespace {
+
+float AdjustFarClip(float farClip, int32_t mapID) {
+    float minFarClip = 183.33333f;
+    float maxFarClip = 1583.3334f;
+
+    if (mapID < 530 || mapID == 575 || mapID == 543) {
+        if (!CWorldParam::cvar_farClipOverride || CWorldParam::cvar_farClipOverride->GetInt() < 1) {
+            maxFarClip = 791.66669f;
+        }
+    } else if (false /* TODO OsGetPhysicalMemory() <= 1073741824 */) {
+        maxFarClip = 791.66669f;
+    }
+
+    return std::min(std::max(farClip, minFarClip), maxFarClip);
+}
+
+}
+
 HWORLDOBJECT CWorld::AddObject(CM2Model* model, void* handler, void* handlerParam, uint64_t param64, uint32_t param32, uint32_t objFlags) {
     auto entity = CMap::AllocEntity(objFlags & 0x8 ? true : false);
 
@@ -157,6 +178,24 @@ int32_t CWorld::OnTick(const EVENT_DATA_TICK* data, void* param) {
     return 1;
 }
 
+void CWorld::SetFarClip(float farClip) {
+    farClip = AdjustFarClip(farClip, CMap::s_mapID);
+
+    if (CWorld::s_farClip == farClip) {
+        return;
+    }
+
+    CWorld::s_prevFarClip = CWorld::s_farClip;
+    CWorld::s_farClip = farClip;
+
+    // TODO CMapRenderChunk::DirtyPools();
+
+    CWorld::s_nearClip = 0.2f;
+
+    // TODO dword_D1C410 = 1;
+    // TODO dword_ADEEE0 = 1;
+}
+
 void CWorld::SetUpdateTime(float tickTimeSec, uint32_t curTimeMs) {
     auto tickTimeFixed = CWorld::GetFixedPrecisionTime(tickTimeSec);
 

src/world/CWorld.hpp

@@ -68,6 +68,7 @@ class CWorld {
         static void Initialize();
         static void LoadMap(const char* mapName, const C3Vector& position, int32_t zoneID);
         static int32_t OnTick(const EVENT_DATA_TICK* data, void* param);
+        static void SetFarClip(float farClip);
         static void SetUpdateTime(float tickTimeSec, uint32_t curTimeMs);
 
     private:
@@ -79,6 +80,7 @@ class CWorld {
         static float s_gameTimeSec;
         static CM2Scene* s_m2Scene;
         static float s_nearClip;
+        static float s_prevFarClip;
         static uint32_t s_tickTimeFixed;
         static uint32_t s_tickTimeMs;
         static float s_tickTimeSec;

src/world/CWorldParam.cpp

@@ -1,4 +1,5 @@
 #include "world/CWorldParam.hpp"
+#include "world/CWorld.hpp"
 #include "console/CVar.hpp"
 
 CVar* CWorldParam::cvar_baseMip;
@@ -53,7 +54,8 @@ bool CWorldParam::ExtShadowQualityCallback(CVar* var, const char* oldValue, cons
 }
 
 bool CWorldParam::FarClipCallback(CVar* var, const char* oldValue, const char* value, void* arg) {
-    // TODO
+    CWorld::SetFarClip(SStrToFloat(value));
+
     return true;
 }
 

src/world/CWorldParam.hpp

@@ -1,7 +1,7 @@
 #ifndef WORLD_C_WORLD_PARAM_HPP
 #define WORLD_C_WORLD_PARAM_HPP
 
-class CVar;
+#include "console/CVar.hpp"
 
 class CWorldParam {
     public: