From 53cd576ae69e283f9d574344c4b5da909cb41f5d Mon Sep 17 00:00:00 2001
From: Tater <Mr.Potatooh@gmail.com>
Date: Wed, 18 Dec 2024 20:41:23 -0600
Subject: [PATCH] Add CopyWorldClean to fix ASan

---
 src/game/client/gameclient.cpp           |  4 +-
 src/game/client/prediction/gameworld.cpp | 49 ++++++++++++++++++++++++
 src/game/client/prediction/gameworld.h   |  1 +
 3 files changed, 52 insertions(+), 2 deletions(-)

diff --git a/src/game/client/gameclient.cpp b/src/game/client/gameclient.cpp
index 123d9d2397f..78605a9bf01 100644
--- a/src/game/client/gameclient.cpp
+++ b/src/game/client/gameclient.cpp
@@ -2404,7 +2404,7 @@ void CGameClient::OnPredict()
 
 	if(g_Config.m_ClRemoveAnti)
 	{
-		m_ExtraPredictedWorld.CopyWorld(&m_PredictedWorld);
+		m_ExtraPredictedWorld.CopyWorldClean(&m_PredictedWorld);
 
 		// Remove other tees to reduce lag and because they aren't really important in this case
 		for(int i = 0; i < MAX_CLIENTS; i++)
@@ -2687,7 +2687,7 @@ void CGameClient::OnPredict()
 	// Copy the current pred world so on the next tick we have the "previous" pred world to advance and test against
 
 	if(m_NewPredictedTick)
-		m_PredSmoothingWorld.CopyWorld(&m_PredictedWorld);
+		m_PredSmoothingWorld.CopyWorldClean(&m_PredictedWorld);
 
 	for(int i = 0; i < MAX_CLIENTS; i++)
 	{
diff --git a/src/game/client/prediction/gameworld.cpp b/src/game/client/prediction/gameworld.cpp
index cecffb9b8f3..c72e35500c1 100644
--- a/src/game/client/prediction/gameworld.cpp
+++ b/src/game/client/prediction/gameworld.cpp
@@ -579,6 +579,55 @@ void CGameWorld::NetObjEnd()
 	}
 }
 
+void CGameWorld::CopyWorldClean(CGameWorld *pFrom)
+{
+	if(pFrom == this || !pFrom)
+		return;
+	m_IsValidCopy = false;
+
+	m_GameTick = pFrom->m_GameTick;
+	m_pCollision = pFrom->m_pCollision;
+	m_WorldConfig = pFrom->m_WorldConfig;
+	for(int i = 0; i < 2; i++)
+	{
+		m_Core.m_aTuning[i] = pFrom->m_Core.m_aTuning[i];
+	}
+	m_pTuningList = pFrom->m_pTuningList;
+	m_Teams = pFrom->m_Teams;
+	m_Core.m_vSwitchers = pFrom->m_Core.m_vSwitchers;
+	// delete the previous entities
+	Clear();
+	for(int i = 0; i < MAX_CLIENTS; i++)
+	{
+		m_apCharacters[i] = 0;
+		m_Core.m_apCharacters[i] = 0;
+	}
+	// copy and add the new entities
+	for(int Type = 0; Type < NUM_ENTTYPES; Type++)
+	{
+		for(CEntity *pEnt = pFrom->FindLast(Type); pEnt; pEnt = pEnt->TypePrev())
+		{
+			CEntity *pCopy = 0;
+			if(Type == ENTTYPE_PROJECTILE)
+				pCopy = new CProjectile(*((CProjectile *)pEnt));
+			else if(Type == ENTTYPE_LASER)
+				pCopy = new CLaser(*((CLaser *)pEnt));
+			else if(Type == ENTTYPE_DRAGGER)
+				pCopy = new CDragger(*((CDragger *)pEnt));
+			else if(Type == ENTTYPE_CHARACTER)
+				pCopy = new CCharacter(*((CCharacter *)pEnt));
+			else if(Type == ENTTYPE_PICKUP)
+				pCopy = new CPickup(*((CPickup *)pEnt));
+			if(pCopy)
+			{
+				pCopy->m_pParent = nullptr;
+				pCopy->m_pChild = nullptr;
+				this->InsertEntity(pCopy);
+			}
+		}
+	}
+}
+
 void CGameWorld::CopyWorld(CGameWorld *pFrom)
 {
 	if(pFrom == this || !pFrom)
diff --git a/src/game/client/prediction/gameworld.h b/src/game/client/prediction/gameworld.h
index 78d64030847..42dcb782a78 100644
--- a/src/game/client/prediction/gameworld.h
+++ b/src/game/client/prediction/gameworld.h
@@ -96,6 +96,7 @@ class CGameWorld
 	void NetObjAdd(int ObjId, int ObjType, const void *pObjData, const CNetObj_EntityEx *pDataEx);
 	void NetObjEnd();
 	void CopyWorld(CGameWorld *pFrom);
+	void CopyWorldClean(CGameWorld *pFrom); //TClient
 	CEntity *FindMatch(int ObjId, int ObjType, const void *pObjData);
 	void Clear();