diff --git a/Source/Client/Replay.cpp b/Source/Client/Replay.cpp
index dfb008d2..195efcef 100644
--- a/Source/Client/Replay.cpp
+++ b/Source/Client/Replay.cpp
@@ -831,3 +831,65 @@ ReplayFileList& ReplayFileList::Instance() {
   static ReplayFileList g_replayFileList;
   return g_replayFileList;
 }
+
+// OFFSET: 0x00B87110
+// FUNCTION: fn_19339
+bool Replay::SetHeaderInfo(
+  std::uint32_t key0, std::uint32_t key1, const char* characterName, const char* mapName, int accountId, int cellX, int cellY, int unknown0078, int service,
+  int serviceType, int unknown0014
+) {
+  if (!characterName || !mapName) {
+    return false;
+  }
+  std::memcpy(this->header.mapName, mapName, sizeof(this->header.mapName));
+  std::memcpy(this->header.characterName, characterName, sizeof(this->header.characterName));
+  this->header.service = service;
+  this->header.serviceType = serviceType;
+  this->header.unknown_0014 = unknown0014;
+  this->header.key0 = key0;
+  this->header.key1 = key1;
+  this->header.accountId = accountId;
+  this->header.cellX = cellX;
+  this->header.cellY = cellY;
+  this->header.unknown_0078 = unknown0078;
+  this->header.signature = 0x52414705;
+  this->header.closingSignature = 0x52414705;
+  return true;
+}
+
+// OFFSET: 0x00B871C0
+// FUNCTION: fn_19340
+void Replay::IncreaseSpeed() {
+  if (this->speed == 0.25f) {
+    this->speed = 0.5f;
+  } else if (this->speed == 0.5f) {
+    this->speed = 1.0f;
+  } else if (this->speed == 1.0f) {
+    this->speed = 2.0f;
+  } else if (this->speed == 2.0f || this->speed == 4.0f) {
+    this->speed = 4.0f;
+  }
+}
+
+// OFFSET: 0x00B87240
+// FUNCTION: fn_19341
+void Replay::DecreaseSpeed() {
+  if (this->speed == 0.25f || this->speed == 0.5f) {
+    this->speed = 0.25f;
+  } else if (this->speed == 1.0f) {
+    this->speed = 0.5f;
+  } else if (this->speed == 2.0f) {
+    this->speed = 1.0f;
+  } else if (this->speed == 4.0f) {
+    this->speed = 2.0f;
+  }
+}
+
+// OFFSET: 0x00B872C0
+// FUNCTION: fn_19342
+void Replay::RestartClock() {
+  if (this->state != 3 && this->state != 8) {
+    this->baseFrame = this->frame;
+    this->started = this->previousTick = timeGetTime();
+  }
+}
diff --git a/Source/Client/Replay.h b/Source/Client/Replay.h
index fb5997c8..ed807798 100644
--- a/Source/Client/Replay.h
+++ b/Source/Client/Replay.h
@@ -140,6 +140,13 @@ public:
   bool ReadRecord(unsigned char* buffer, std::uint16_t& id, bool force);
   bool AllowsEvent(int event) const;
   void Rewind();
+  bool SetHeaderInfo(
+    std::uint32_t key0, std::uint32_t key1, const char* characterName, const char* mapName, int accountId, int cellX, int cellY, int unknown0078, int service,
+    int serviceType, int unknown0014
+  );
+  void IncreaseSpeed();
+  void DecreaseSpeed();
+  void RestartClock();
 };
 
 struct ReplayFileEntry {
diff --git a/Source/Contents/NavigationManager.h b/Source/Contents/NavigationManager.h
index 0fd03914..6bc9f2e3 100644
--- a/Source/Contents/NavigationManager.h
+++ b/Source/Contents/NavigationManager.h
@@ -34,6 +34,8 @@ struct NaviLink {
 
 struct NaviDataEntry {
   void Reset();
+  int GetPrevious() const;
+  int GetCost() const;
 
   /* 0000 */ int previous;
   /* 0004 */ CNavi_Link* link;
@@ -257,6 +259,8 @@ public:
   CNavi_Link* FindLink(unsigned int key, bool byId);
   int FindRoute(std::vector<CNavi_Link*>* route, bool direct, bool allowGates, bool includeObjects, bool allowWarps, int side);
   void ResetLinkDepths();
+  bool CollectLinksTo(CNaviInfo* target, std::vector<CNavi_Link*>* out);
+  int ObjectCount() const;
 
   /* 0000 */ std::vector<CNaviInfo*> destinations;
   /* 000C */ std::vector<CNavi_Link*> objects;
diff --git a/Source/Contents/NavigationRoute.cpp b/Source/Contents/NavigationRoute.cpp
index c91ff3ce..f1c90c8a 100644
--- a/Source/Contents/NavigationRoute.cpp
+++ b/Source/Contents/NavigationRoute.cpp
@@ -691,3 +691,40 @@ bool CNavigationManager::SavedTargetText(char* out, int size) {
   }
   return true;
 }
+
+// OFFSET: 0x00B887B0
+// FUNCTION: fn_19374
+int NaviDataEntry::GetPrevious() const {
+  return this->previous;
+}
+
+// OFFSET: 0x00B887C0
+// FUNCTION: fn_19375
+int NaviDataEntry::GetCost() const {
+  return this->cost;
+}
+
+// OFFSET: 0x00B890E0
+// FUNCTION: fn_19384
+bool CNaviData::CollectLinksTo(CNaviInfo* target, std::vector<CNavi_Link*>* out) {
+  out->clear();
+  for (auto info = this->destinations.begin(); info != this->destinations.end(); ++info) {
+    for (auto link = (*info)->LinksBegin(); link != (*info)->LinksEnd(); ++link) {
+      if ((*link)->GetLinkedInfo() == target) {
+        out->push_back(*link);
+      }
+    }
+  }
+  for (auto link = this->objects.begin(); link != this->objects.end(); ++link) {
+    if ((*link)->GetLinkedInfo() == target) {
+      out->push_back(*link);
+    }
+  }
+  return out->size() != 0;
+}
+
+// OFFSET: 0x00B89980
+// FUNCTION: fn_19389
+int CNaviData::ObjectCount() const {
+  return static_cast<int>(this->objects.size());
+}