From f75460fc1d83f82b088aaf69d6fba869fc1569f5 Mon Sep 17 00:00:00 2001
From: Sergeanur <s.anureev@yandex.ua>
Date: Tue, 29 Dec 2020 13:55:15 +0200
Subject: Reorder CEntity functions into their original order

---
 src/core/References.cpp | 60 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/core/World.cpp      | 14 ++++++++++--
 2 files changed, 72 insertions(+), 2 deletions(-)

(limited to 'src/core')

diff --git a/src/core/References.cpp b/src/core/References.cpp
index 52abbc3e..6b0c868c 100644
--- a/src/core/References.cpp
+++ b/src/core/References.cpp
@@ -21,6 +21,66 @@ CReferences::Init(void)
 	aRefs[NUMREFERENCES-1].next = nil;
 }
 
+void
+CEntity::RegisterReference(CEntity **pent)
+{
+	if(IsBuilding())
+		return;
+	CReference *ref;
+	// check if already registered
+	for(ref = m_pFirstReference; ref; ref = ref->next)
+		if(ref->pentity == pent)
+			return;
+	// have to allocate new reference
+	ref = CReferences::pEmptyList;
+	if(ref){
+		CReferences::pEmptyList = ref->next;
+
+		ref->pentity = pent;
+		ref->next = m_pFirstReference;
+		m_pFirstReference = ref;
+		return;
+	}
+	return;
+}
+
+// Clear all references to this entity
+void
+CEntity::ResolveReferences(void)
+{
+	CReference *ref;
+	// clear pointers to this entity
+	for(ref = m_pFirstReference; ref; ref = ref->next)
+		if(*ref->pentity == this)
+			*ref->pentity = nil;
+	// free list
+	if(m_pFirstReference){
+		for(ref = m_pFirstReference; ref->next; ref = ref->next)
+			;
+		ref->next = CReferences::pEmptyList;
+		CReferences::pEmptyList = m_pFirstReference;
+		m_pFirstReference = nil;
+	}
+}
+
+// Free all references that no longer point to this entity
+void
+CEntity::PruneReferences(void)
+{
+	CReference *ref, *next, **lastnextp;
+	lastnextp = &m_pFirstReference;
+	for(ref = m_pFirstReference; ref; ref = next){
+		next = ref->next;
+		if(*ref->pentity == this)
+			lastnextp = &ref->next;
+		else{
+			*lastnextp = ref->next;
+			ref->next = CReferences::pEmptyList;
+			CReferences::pEmptyList = ref;
+		}
+	}
+}
+
 void
 CReferences::RemoveReferencesToPlayer(void)
 {
diff --git a/src/core/World.cpp b/src/core/World.cpp
index b2c1696c..dc99f015 100644
--- a/src/core/World.cpp
+++ b/src/core/World.cpp
@@ -1600,14 +1600,24 @@ CWorld::ExtinguishAllCarFiresInArea(CVector point, float range)
 	}
 }
 
+inline void 
+AddSteamsFromGround(CPtrList& list) 
+{
+	CPtrNode *pNode = list.first;
+	while (pNode) {
+		((CEntity*)pNode->item)->AddSteamsFromGround(nil);
+		pNode = pNode->next;
+	}
+}
+
 void
 CWorld::AddParticles(void)
 {
 	for(int32 y = 0; y < NUMSECTORS_Y; y++) {
 		for(int32 x = 0; x < NUMSECTORS_X; x++) {
 			CSector *pSector = GetSector(x, y);
-			CEntity::AddSteamsFromGround(pSector->m_lists[ENTITYLIST_BUILDINGS]);
-			CEntity::AddSteamsFromGround(pSector->m_lists[ENTITYLIST_DUMMIES]);
+			AddSteamsFromGround(pSector->m_lists[ENTITYLIST_BUILDINGS]);
+			AddSteamsFromGround(pSector->m_lists[ENTITYLIST_DUMMIES]);
 		}
 	}
 }
-- 
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