fix(Core): Activate creatures and objects during opening cinematics (#4045)

Co-authored-by: Si1ker <55638679+Sombranator@users.noreply.github.com>
Co-authored-by: Stefano Borzì <stefanoborzi32@gmail.com>

src/server/game/DataStores/DBCStores.cpp

@@ -15,6 +15,9 @@
 #include "BattlegroundMgr.h"
 #include "World.h"
 #include <map>
+#include <fstream>
+#include <iostream>
+#include <iomanip>
 
 typedef std::map<uint16, uint32> AreaFlagByAreaID;
 typedef std::map<uint32, uint32> AreaFlagByMapID;
@@ -41,6 +44,7 @@ DBCStorage <CharTitlesEntry> sCharTitlesStore(CharTitlesEntryfmt);
 DBCStorage <ChatChannelsEntry> sChatChannelsStore(ChatChannelsEntryfmt);
 DBCStorage <ChrClassesEntry> sChrClassesStore(ChrClassesEntryfmt);
 DBCStorage <ChrRacesEntry> sChrRacesStore(ChrRacesEntryfmt);
+DBCStorage <CinematicCameraEntry> sCinematicCameraStore(CinematicCameraEntryfmt);
 DBCStorage <CinematicSequencesEntry> sCinematicSequencesStore(CinematicSequencesEntryfmt);
 DBCStorage <CreatureDisplayInfoEntry> sCreatureDisplayInfoStore(CreatureDisplayInfofmt);
 DBCStorage <CreatureFamilyEntry> sCreatureFamilyStore(CreatureFamilyfmt);
@@ -171,6 +175,8 @@ DBCStorage <WMOAreaTableEntry> sWMOAreaTableStore(WMOAreaTableEntryfmt);
 DBCStorage <WorldMapAreaEntry> sWorldMapAreaStore(WorldMapAreaEntryfmt);
 DBCStorage <WorldMapOverlayEntry> sWorldMapOverlayStore(WorldMapOverlayEntryfmt);
 
+std::unordered_map<uint32, FlyByCameraCollection> sFlyByCameraStore;
+
 typedef std::list<std::string> StoreProblemList;
 
 uint32 DBCFileCount = 0;
@@ -258,6 +264,7 @@ void LoadDBCStores(const std::string& dataPath)
     LOAD_DBC(sChatChannelsStore,                    "ChatChannels.dbc",                     "chatchannels_dbc");
     LOAD_DBC(sChrClassesStore,                      "ChrClasses.dbc",                       "chrclasses_dbc");
     LOAD_DBC(sChrRacesStore,                        "ChrRaces.dbc",                         "chrraces_dbc");
+    LOAD_DBC(sCinematicCameraStore,                 "CinematicCamera.dbc",                  "cinematiccamera_dbc");
     LOAD_DBC(sCinematicSequencesStore,              "CinematicSequences.dbc",               "cinematicsequences_dbc");
     LOAD_DBC(sCreatureDisplayInfoStore,             "CreatureDisplayInfo.dbc",              "creaturedisplayinfo_dbc");
     LOAD_DBC(sCreatureFamilyStore,                  "CreatureFamily.dbc",                   "creaturefamily_dbc");
@@ -583,10 +590,278 @@ void LoadDBCStores(const std::string& dataPath)
         exit(1);
     }
 
+    LoadM2Cameras(dataPath);
+
     sLog->outString(">> Initialized %d data stores in %u ms", DBCFileCount, GetMSTimeDiffToNow(oldMSTime));
     sLog->outString();
 }
 
+// Convert the geomoetry from a spline value, to an actual WoW XYZ
+G3D::Vector3 TranslateLocation(G3D::Vector4 const* DBCPosition, G3D::Vector3 const* basePosition, G3D::Vector3 const* splineVector)
+{
+    G3D::Vector3 work;
+    float x = basePosition->x + splineVector->x;
+    float y = basePosition->y + splineVector->y;
+    float z = basePosition->z + splineVector->z;
+    float const distance = sqrt((x * x) + (y * y));
+    float angle = std::atan2(x, y) - DBCPosition->w;
+
+    if (angle < 0)
+    {
+        angle += 2 * float(M_PI);
+    }
+
+    work.x = DBCPosition->x + (distance * sin(angle));
+    work.y = DBCPosition->y + (distance * cos(angle));
+    work.z = DBCPosition->z + z;
+    return work;
+}
+
+// Number of cameras not used. Multiple cameras never used in 3.3.5
+bool readCamera(M2Camera const* cam, uint32 buffSize, M2Header const* header, CinematicCameraEntry const* dbcentry)
+{
+    char const* buffer = reinterpret_cast<char const*>(header);
+
+    FlyByCameraCollection cameras;
+    FlyByCameraCollection targetcam;
+
+    G3D::Vector4 DBCData;
+    DBCData.x = dbcentry->base_x;
+    DBCData.y = dbcentry->base_y;
+    DBCData.z = dbcentry->base_z;
+    DBCData.w = dbcentry->base_o;
+
+    // Read target locations, only so that we can calculate orientation
+    for (uint32 k = 0; k < cam->target_positions.timestamps.number; ++k)
+    {
+        // Extract Target positions
+        if (cam->target_positions.timestamps.offset_elements + sizeof(M2Array) > buffSize)
+        {
+            return false;
+        }
+        M2Array const* targTsArray = reinterpret_cast<M2Array const*>(buffer + cam->target_positions.timestamps.offset_elements);
+        if (targTsArray->offset_elements + sizeof(uint32) > buffSize || cam->target_positions.values.offset_elements + sizeof(M2Array) > buffSize)
+        {
+            return false;
+        }
+        uint32 const* targTimestamps = reinterpret_cast<uint32 const*>(buffer + targTsArray->offset_elements);
+        M2Array const* targArray = reinterpret_cast<M2Array const*>(buffer + cam->target_positions.values.offset_elements);
+
+        if (targArray->offset_elements + sizeof(M2SplineKey<G3D::Vector3>) > buffSize)
+        {
+            return false;
+        }
+        M2SplineKey<G3D::Vector3> const* targPositions = reinterpret_cast<M2SplineKey<G3D::Vector3> const*>(buffer + targArray->offset_elements);
+
+        // Read the data for this set
+        uint32 currPos = targArray->offset_elements;
+        for (uint32 i = 0; i < targTsArray->number; ++i)
+        {
+            if (currPos + sizeof(M2SplineKey<G3D::Vector3>) > buffSize)
+            {
+                return false;
+            }
+            // Translate co-ordinates
+            G3D::Vector3 newPos = TranslateLocation(&DBCData, &cam->target_position_base, &targPositions->p0);
+
+            // Add to vector
+            FlyByCamera thisCam;
+            thisCam.timeStamp = targTimestamps[i];
+            thisCam.locations.x = newPos.x;
+            thisCam.locations.y = newPos.y;
+            thisCam.locations.z = newPos.z;
+            thisCam.locations.w = 0.0f;
+            targetcam.push_back(thisCam);
+            targPositions++;
+            currPos += sizeof(M2SplineKey<G3D::Vector3>);
+        }
+    }
+
+    // Read camera positions and timestamps (translating first position of 3 only, we don't need to translate the whole spline)
+    for (uint32 k = 0; k < cam->positions.timestamps.number; ++k)
+    {
+        // Extract Camera positions for this set
+        if (cam->positions.timestamps.offset_elements + sizeof(M2Array) > buffSize)
+        {
+            return false;
+        }
+        M2Array const* posTsArray = reinterpret_cast<M2Array const*>(buffer + cam->positions.timestamps.offset_elements);
+        if (posTsArray->offset_elements + sizeof(uint32) > buffSize || cam->positions.values.offset_elements + sizeof(M2Array) > buffSize)
+        {
+            return false;
+        }
+        uint32 const* posTimestamps = reinterpret_cast<uint32 const*>(buffer + posTsArray->offset_elements);
+        M2Array const* posArray = reinterpret_cast<M2Array const*>(buffer + cam->positions.values.offset_elements);
+        if (posArray->offset_elements + sizeof(M2SplineKey<G3D::Vector3>) > buffSize)
+        {
+            return false;
+        }
+        M2SplineKey<G3D::Vector3> const* positions = reinterpret_cast<M2SplineKey<G3D::Vector3> const*>(buffer + posArray->offset_elements);
+
+        // Read the data for this set
+        uint32 currPos = posArray->offset_elements;
+        for (uint32 i = 0; i < posTsArray->number; ++i)
+        {
+            if (currPos + sizeof(M2SplineKey<G3D::Vector3>) > buffSize)
+            {
+                return false;
+            }
+            // Translate co-ordinates
+            G3D::Vector3 newPos = TranslateLocation(&DBCData, &cam->position_base, &positions->p0);
+
+            // Add to vector
+            FlyByCamera thisCam;
+            thisCam.timeStamp = posTimestamps[i];
+            thisCam.locations.x = newPos.x;
+            thisCam.locations.y = newPos.y;
+            thisCam.locations.z = newPos.z;
+
+            if (targetcam.size() > 0)
+            {
+                // Find the target camera before and after this camera
+                FlyByCamera lastTarget;
+                FlyByCamera nextTarget;
+
+                // Pre-load first item
+                lastTarget = targetcam[0];
+                nextTarget = targetcam[0];
+                for (uint32 j = 0; j < targetcam.size(); ++j)
+                {
+                    nextTarget = targetcam[j];
+                    if (targetcam[j].timeStamp > posTimestamps[i])
+                    {
+                        break;
+                    }
+
+                    lastTarget = targetcam[j];
+                }
+
+                float x = lastTarget.locations.x;
+                float y = lastTarget.locations.y;
+                // float z = lastTarget.locations.z;
+
+                // Now, the timestamps for target cam and position can be different. So, if they differ we interpolate
+                if (lastTarget.timeStamp != posTimestamps[i])
+                {
+                    uint32 timeDiffTarget = nextTarget.timeStamp - lastTarget.timeStamp;
+                    uint32 timeDiffThis = posTimestamps[i] - lastTarget.timeStamp;
+                    float xDiff = nextTarget.locations.x - lastTarget.locations.x;
+                    float yDiff = nextTarget.locations.y - lastTarget.locations.y;
+                    // float zDiff = nextTarget.locations.z - lastTarget.locations.z;
+                    x = lastTarget.locations.x + (xDiff * (float(timeDiffThis) / float(timeDiffTarget)));
+                    y = lastTarget.locations.y + (yDiff * (float(timeDiffThis) / float(timeDiffTarget)));
+                    // z = lastTarget.locations.z + (zDiff * (float(timeDiffThis) / float(timeDiffTarget)));
+                }
+                float xDiff = x - thisCam.locations.x;
+                float yDiff = y - thisCam.locations.y;
+                thisCam.locations.w = std::atan2(yDiff, xDiff);
+
+                if (thisCam.locations.w < 0)
+                {
+                    thisCam.locations.w += 2 * float(M_PI);
+                }
+            }
+
+            cameras.push_back(thisCam);
+            positions++;
+            currPos += sizeof(M2SplineKey<G3D::Vector3>);
+        }
+    }
+
+    sFlyByCameraStore[dbcentry->id] = cameras;
+    return true;
+}
+
+void LoadM2Cameras(const std::string& dataPath)
+{
+    sFlyByCameraStore.clear();
+    sLog->outString(">> Loading Cinematic Camera files");
+
+    uint32 oldMSTime = getMSTime();
+    for (uint32 i = 0; i < sCinematicCameraStore.GetNumRows(); ++i)
+    {
+        if (CinematicCameraEntry const* dbcentry = sCinematicCameraStore.LookupEntry(i))
+        {
+            std::string filename = dataPath.c_str();
+            filename.append(dbcentry->filename);
+
+            // Replace slashes
+            size_t loc = filename.find("\\");
+            while (loc != std::string::npos)
+            {
+                filename.replace(loc, 1, "/");
+                loc = filename.find("\\");
+            }
+
+            // Replace mdx to .m2
+            loc = filename.find(".mdx");
+            if (loc != std::string::npos)
+            {
+                filename.replace(loc, 4, ".m2");
+            }
+
+            std::ifstream m2file(filename.c_str(), std::ios::in | std::ios::binary);
+            if (!m2file.is_open())
+            {
+                continue;
+            }
+
+            // Get file size
+            m2file.seekg(0, std::ios::end);
+            std::streamoff const fileSize = m2file.tellg();
+
+            // Reject if not at least the size of the header
+            if (static_cast<uint32 const>(fileSize) < sizeof(M2Header))
+            {
+                sLog->outError("Camera file %s is damaged. File is smaller than header size", filename.c_str());
+                m2file.close();
+                continue;
+            }
+
+            // Read 4 bytes (signature)
+            m2file.seekg(0, std::ios::beg);
+            char fileCheck[5];
+            m2file.read(fileCheck, 4);
+            fileCheck[4] = 0;
+
+            // Check file has correct magic (MD20)
+            if (strcmp(fileCheck, "MD20"))
+            {
+                sLog->outError("Camera file %s is damaged. File identifier not found", filename.c_str());
+                m2file.close();
+                continue;
+            }
+
+            // Now we have a good file, read it all into a vector of char's, then close the file.
+            std::vector<char> buffer(fileSize);
+            m2file.seekg(0, std::ios::beg);
+            if (!m2file.read(buffer.data(), fileSize))
+            {
+                m2file.close();
+                continue;
+            }
+            m2file.close();
+
+            // Read header
+            M2Header const* header = reinterpret_cast<M2Header const*>(buffer.data());
+
+            if (header->ofsCameras + sizeof(M2Camera) > static_cast<uint32 const>(fileSize))
+            {
+                sLog->outError("Camera file %s is damaged. Camera references position beyond file end", filename.c_str());
+                continue;
+            }
+
+            // Get camera(s) - Main header, then dump them.
+            M2Camera const* cam = reinterpret_cast<M2Camera const*>(buffer.data() + header->ofsCameras);
+            if (!readCamera(cam, fileSize, header, dbcentry))
+            {
+                sLog->outError("Camera file %s is damaged. Camera references position beyond file end", filename.c_str());
+            }
+        }
+    }
+    sLog->outString(">> Loaded %u cinematic waypoint sets in %u ms", (uint32)sFlyByCameraStore.size(), GetMSTimeDiffToNow(oldMSTime));
+}
+
 SimpleFactionsList const* GetFactionTeamList(uint32 faction)
 {
     FactionTeamMap::const_iterator itr = sFactionTeamMap.find(faction);

src/server/game/DataStores/DBCStores.h

@@ -13,6 +13,8 @@
 #include <list>
 
 typedef std::list<uint32> SimpleFactionsList;
+typedef std::vector<FlyByCamera> FlyByCameraCollection;
+
 SimpleFactionsList const* GetFactionTeamList(uint32 faction);
 
 char* GetPetName(uint32 petfamily, uint32 dbclang);
@@ -67,6 +69,7 @@ extern DBCStorage <CharStartOutfitEntry>         sCharStartOutfitStore;
 extern DBCStorage <CharTitlesEntry>              sCharTitlesStore;
 extern DBCStorage <ChrClassesEntry>              sChrClassesStore;
 extern DBCStorage <ChrRacesEntry>                sChrRacesStore;
+extern DBCStorage <CinematicCameraEntry>         sCinematicCameraStore;
 extern DBCStorage <CinematicSequencesEntry>      sCinematicSequencesStore;
 extern DBCStorage <CreatureDisplayInfoEntry>     sCreatureDisplayInfoStore;
 extern DBCStorage <CreatureFamilyEntry>          sCreatureFamilyStore;
@@ -160,7 +163,9 @@ extern DBCStorage <VehicleSeatEntry>             sVehicleSeatStore;
 extern DBCStorage <WMOAreaTableEntry>            sWMOAreaTableStore;
 //extern DBCStorage <WorldMapAreaEntry>           sWorldMapAreaStore; -- use Zone2MapCoordinates and Map2ZoneCoordinates
 extern DBCStorage <WorldMapOverlayEntry>         sWorldMapOverlayStore;
+extern std::unordered_map<uint32, FlyByCameraCollection> sFlyByCameraStore;
 
 void LoadDBCStores(const std::string& dataPath);
+void LoadM2Cameras(const std::string& dataPath);
 
 #endif

src/server/game/Entities/Object/Object.cpp

@@ -1529,13 +1529,23 @@ bool Position::IsPositionValid() const
 float WorldObject::GetGridActivationRange() const
 {
     if (ToPlayer())
+    {
+        if (ToPlayer()->IsOnCinematic())
+        {
+            return DEFAULT_VISIBILITY_INSTANCE;
+        }
         return IsInWintergrasp() ? VISIBILITY_DIST_WINTERGRASP : GetMap()->GetVisibilityRange();
+    }
     else if (ToCreature())
+    {
         return ToCreature()->m_SightDistance;
-    else if (GetTypeId() == TYPEID_GAMEOBJECT && ToGameObject()->IsTransport())
+    }
+    else if (GetTypeId() == TYPEID_GAMEOBJECT && ToGameObject()->IsTransport() && isActiveObject())
+    {
         return GetMap()->GetVisibilityRange();
-    else
-        return 0.0f;
+    }
+
+    return 0.0f;
 }
 
 float WorldObject::GetVisibilityRange() const
@@ -1564,15 +1574,27 @@ float WorldObject::GetSightRange(const WorldObject* target) const
             if (target)
             {
                 if (target->IsVisibilityOverridden() && target->GetTypeId() == TYPEID_UNIT)
+                {
                     return MAX_VISIBILITY_DISTANCE;
+                }
                 else if (target->GetTypeId() == TYPEID_GAMEOBJECT)
                 {
                     if (IsInWintergrasp() && target->IsInWintergrasp())
+                    {
                         return VISIBILITY_DIST_WINTERGRASP + VISIBILITY_INC_FOR_GOBJECTS;
+                    }
                     else if (target->IsVisibilityOverridden())
+                    {
                         return MAX_VISIBILITY_DISTANCE;
+                    }
+                    else if (ToPlayer()->IsOnCinematic())
+                    {
+                        return DEFAULT_VISIBILITY_INSTANCE;
+                    }
                     else
+                    {
                         return GetMap()->GetVisibilityRange() + VISIBILITY_INC_FOR_GOBJECTS;
+                    }
                 }
 
                 return IsInWintergrasp() && target->IsInWintergrasp() ? VISIBILITY_DIST_WINTERGRASP : GetMap()->GetVisibilityRange();
@@ -1580,9 +1602,18 @@ float WorldObject::GetSightRange(const WorldObject* target) const
             return IsInWintergrasp() ? VISIBILITY_DIST_WINTERGRASP : GetMap()->GetVisibilityRange();
         }
         else if (ToCreature())
+        {
             return ToCreature()->m_SightDistance;
+        }
         else
+        {
             return SIGHT_RANGE_UNIT;
+        }
+    }
+
+    if (ToDynObject() && isActiveObject())
+    {
+        return GetMap()->GetVisibilityRange();
     }
 
     return 0.0f;

src/server/game/Entities/Player/Player.cpp

@@ -97,6 +97,9 @@
 #define SKILL_PERM_BONUS(x)    int16(PAIR32_HIPART(x))
 #define MAKE_SKILL_BONUS(t, p) MAKE_PAIR32(t, p)
 
+#define CINEMATIC_LOOKAHEAD (2 * IN_MILLISECONDS)
+#define CINEMATIC_UPDATEDIFF 500
+
 enum CharacterFlags
 {
     CHARACTER_FLAG_NONE                 = 0x00000000,
@@ -944,6 +947,13 @@ Player::Player(WorldSession* session): Unit(true), m_mover(this)
 
     _activeCheats = CHEAT_NONE;
 
+    m_cinematicDiff = 0;
+    m_lastCinematicCheck = 0;
+    m_activeCinematicCameraId = 0;
+    m_cinematicCamera = nullptr;
+    m_remoteSightPosition = Position(0.0f, 0.0f, 0.0f);
+    m_CinematicObject = nullptr;
+
     m_achievementMgr = new AchievementMgr(this);
     m_reputationMgr = new ReputationMgr(this);
 
@@ -1589,6 +1599,14 @@ void Player::Update(uint32 p_time)
         m_nextMailDelivereTime = 0;
     }
 
+    // Update cinematic location, if 500ms have passed and we're doing a cinematic now.
+    m_cinematicDiff += p_time;
+    if (m_cinematicCamera && m_activeCinematicCameraId && GetMSTimeDiffToNow(m_lastCinematicCheck) > CINEMATIC_UPDATEDIFF)
+    {
+        m_lastCinematicCheck = getMSTime();
+        UpdateCinematicLocation(p_time);
+    }
+
     //used to implement delayed far teleports
     SetMustDelayTeleport(true);
     Unit::Update(p_time);
@@ -6980,6 +6998,10 @@ void Player::SendCinematicStart(uint32 CinematicSequenceId)
     WorldPacket data(SMSG_TRIGGER_CINEMATIC, 4);
     data << uint32(CinematicSequenceId);
     SendDirectMessage(&data);
+    if (const CinematicSequencesEntry* sequence = sCinematicSequencesStore.LookupEntry(CinematicSequenceId))
+    {
+        SetActiveCinematicCamera(sequence->cinematicCamera);
+    }
 }
 
 void Player::SendMovieStart(uint32 MovieId)
@@ -27695,6 +27717,142 @@ bool Player::SetFeatherFall(bool apply, bool packetOnly /*= false*/)
     return true;
 }
 
+void Player::BeginCinematic()
+{
+    // Sanity check for active camera set
+    if (m_activeCinematicCameraId == 0)
+    {
+        return;
+    }
+
+    auto itr = sFlyByCameraStore.find(m_activeCinematicCameraId);
+    if (itr != sFlyByCameraStore.end())
+    {
+        // Initialize diff, and set camera
+        m_cinematicDiff = 0;
+        m_cinematicCamera = &itr->second;
+
+        auto camitr = m_cinematicCamera->begin();
+        if (camitr != m_cinematicCamera->end())
+        {
+            Position pos(camitr->locations.x, camitr->locations.y, camitr->locations.z, camitr->locations.w);
+            if (!pos.IsPositionValid())
+            {
+                return;
+            }
+
+            m_mapRef->LoadGrid(camitr->locations.x, camitr->locations.y);
+            m_CinematicObject = SummonCreature(VISUAL_WAYPOINT, pos.m_positionX, pos.m_positionY, pos.m_positionZ, 0.0f, TEMPSUMMON_CORPSE_TIMED_DESPAWN, 120000);
+            if (m_CinematicObject)
+            {
+                m_CinematicObject->setActive(true);
+                SetViewpoint(m_CinematicObject, true);
+            }
+        }
+    }
+}
+
+void Player::EndCinematic()
+{
+    m_cinematicDiff = 0;
+    m_cinematicCamera = nullptr;
+    m_activeCinematicCameraId = 0;
+    if (m_CinematicObject)
+    {
+        if (m_seer && m_seer == m_CinematicObject)
+        {
+            SetViewpoint(m_CinematicObject, false);
+        }
+        m_CinematicObject->AddObjectToRemoveList();
+    }
+}
+
+void Player::UpdateCinematicLocation(uint32 /*diff*/)
+{
+    Position lastPosition;
+    uint32 lastTimestamp = 0;
+    Position nextPosition;
+    uint32 nextTimestamp = 0;
+
+    if (m_cinematicCamera->size() == 0)
+    {
+        return;
+    }
+
+    // Obtain direction of travel
+    for (FlyByCamera cam : *m_cinematicCamera)
+    {
+        if (cam.timeStamp > m_cinematicDiff)
+        {
+            nextPosition = Position(cam.locations.x, cam.locations.y, cam.locations.z, cam.locations.w);
+            nextTimestamp = cam.timeStamp;
+            break;
+        }
+        lastPosition = Position(cam.locations.x, cam.locations.y, cam.locations.z, cam.locations.w);
+        lastTimestamp = cam.timeStamp;
+    }
+    float angle = lastPosition.GetAngle(&nextPosition);
+    angle -= lastPosition.GetOrientation();
+    if (angle < 0)
+    {
+        angle += 2 * float(M_PI);
+    }
+
+    // Look for position around 2 second ahead of us.
+    int32 workDiff = m_cinematicDiff;
+
+    // Modify result based on camera direction (Humans for example, have the camera point behind)
+    workDiff += static_cast<int32>(float(CINEMATIC_LOOKAHEAD) * cos(angle));
+
+    // Get an iterator to the last entry in the cameras, to make sure we don't go beyond the end
+    FlyByCameraCollection::const_reverse_iterator endItr = m_cinematicCamera->rbegin();
+    if (endItr != m_cinematicCamera->rend() && workDiff > static_cast<int32>(endItr->timeStamp))
+    {
+        workDiff = endItr->timeStamp;
+    }
+
+    // Never try to go back in time before the start of cinematic!
+    if (workDiff < 0)
+    {
+        workDiff = m_cinematicDiff;
+    }
+
+    // Obtain the previous and next waypoint based on timestamp
+    for (FlyByCamera cam : *m_cinematicCamera)
+    {
+        if (static_cast<int32>(cam.timeStamp) >= workDiff)
+        {
+            nextPosition = Position(cam.locations.x, cam.locations.y, cam.locations.z, cam.locations.w);
+            nextTimestamp = cam.timeStamp;
+            break;
+        }
+        lastPosition = Position(cam.locations.x, cam.locations.y, cam.locations.z, cam.locations.w);
+        lastTimestamp = cam.timeStamp;
+    }
+
+    // Never try to go beyond the end of the cinematic
+    if (workDiff > static_cast<int32>(nextTimestamp))
+    {
+        workDiff = static_cast<int32>(nextTimestamp);
+    }
+
+    // Interpolate the position for this moment in time (or the adjusted moment in time)
+    uint32 timeDiff = nextTimestamp - lastTimestamp;
+    uint32 interDiff = workDiff - lastTimestamp;
+    float xDiff = nextPosition.m_positionX - lastPosition.m_positionX;
+    float yDiff = nextPosition.m_positionY - lastPosition.m_positionY;
+    float zDiff = nextPosition.m_positionZ - lastPosition.m_positionZ;
+    Position interPosition(lastPosition.m_positionX + (xDiff * (float(interDiff) / float (timeDiff))), lastPosition.m_positionY +
+                                                      (yDiff * (float(interDiff) / float (timeDiff))), lastPosition.m_positionZ + (zDiff * (float(interDiff) / float (timeDiff))));
+
+    // Advance (at speed) to this position. The remote sight object is used
+    // to send update information to player in cinematic
+    if (m_CinematicObject && interPosition.IsPositionValid())
+    {
+        m_CinematicObject->MonsterMoveWithSpeed(interPosition.m_positionX, interPosition.m_positionY, interPosition.m_positionZ, 200.0f);
+    }
+}
+
 Guild* Player::GetGuild() const
 {
     uint32 guildId = GetGuildId();

src/server/game/Entities/Player/Player.h

@@ -2641,6 +2641,17 @@ public:
 
     static std::unordered_map<int, bgZoneRef> bgZoneIdToFillWorldStates; // zoneId -> FillInitialWorldStates
 
+    // Cinematic camera data and remote sight functions
+    [[nodiscard]] uint32 GetActiveCinematicCamera() const { return m_activeCinematicCameraId; }
+    void SetActiveCinematicCamera(uint32 cinematicCameraId = 0) { m_activeCinematicCameraId = cinematicCameraId; }
+    [[nodiscard]] bool IsOnCinematic() const { return (m_cinematicCamera != nullptr); }
+    void BeginCinematic();
+    void EndCinematic();
+    void UpdateCinematicLocation(uint32 diff);
+
+    std::string GetMapAreaAndZoneString();
+    std::string GetCoordsMapAreaAndZoneString();
+
 protected:
     // Gamemaster whisper whitelist
     WhisperListContainer WhisperList;
@@ -2990,6 +3001,14 @@ private:
     uint32 manaBeforeDuel;
 
     bool m_isInstantFlightOn;
+
+    // Remote location information
+    uint32 m_cinematicDiff;
+    uint32 m_lastCinematicCheck;
+    uint32 m_activeCinematicCameraId;
+    FlyByCameraCollection* m_cinematicCamera;
+    Position m_remoteSightPosition;
+    Creature* m_CinematicObject;
 };
 
 void AddItemsSetItem(Player* player, Item* item);

src/server/game/Handlers/MiscHandler.cpp

@@ -963,15 +963,23 @@ void WorldSession::HandleSetActionButtonOpcode(WorldPacket& recv_data)
 void WorldSession::HandleCompleteCinematic(WorldPacket& /*recv_data*/)
 {
 #if defined(ENABLE_EXTRAS) && defined(ENABLE_EXTRA_LOGS)
+{
     sLog->outDebug(LOG_FILTER_NETWORKIO, "WORLD: Received CMSG_COMPLETE_CINEMATIC");
+}
 #endif
+    // If player has sight bound to visual waypoint NPC we should remove it
+    GetPlayer()->EndCinematic();
 }
 
 void WorldSession::HandleNextCinematicCamera(WorldPacket& /*recv_data*/)
 {
 #if defined(ENABLE_EXTRAS) && defined(ENABLE_EXTRA_LOGS)
+{
     sLog->outDebug(LOG_FILTER_NETWORKIO, "WORLD: Received CMSG_NEXT_CINEMATIC_CAMERA");
+}
 #endif
+    // Sent by client when cinematic actually begun. So we begin the server side process
+    GetPlayer()->BeginCinematic();
 }
 
 void WorldSession::HandleFeatherFallAck(WorldPacket& recv_data)

src/server/game/Maps/Map.cpp

@@ -785,6 +785,19 @@ void Map::Update(const uint32 t_diff, const uint32 s_diff, bool  /*thread*/)
 
         VisitNearbyCellsOfPlayer(player, grid_object_update, world_object_update, grid_large_object_update, world_large_object_update);
 
+        // If player is using far sight, visit that object too
+        if (WorldObject* viewPoint = player->GetViewpoint())
+        {
+            if (Creature* viewCreature = viewPoint->ToCreature())
+            {
+                VisitNearbyCellsOf(viewCreature, grid_object_update, world_object_update, grid_large_object_update, world_large_object_update);
+            }
+            else if (DynamicObject* viewObject = viewPoint->ToDynObject())
+            {
+                VisitNearbyCellsOf(viewObject, grid_object_update, world_object_update, grid_large_object_update, world_large_object_update);
+            }
+        }
+
         // handle updates for creatures in combat with player and are more than X yards away
         if (player->IsInCombat())
         {
@@ -2269,6 +2282,28 @@ char const* Map::GetMapName() const
     return i_mapEntry ? i_mapEntry->name[sWorld->GetDefaultDbcLocale()] : "UNNAMEDMAP\x0";
 }
 
+void Map::UpdateObjectVisibility(WorldObject* obj, Cell cell, CellCoord cellpair)
+{
+    cell.SetNoCreate();
+    acore::VisibleChangesNotifier notifier(*obj);
+    TypeContainerVisitor<acore::VisibleChangesNotifier, WorldTypeMapContainer > player_notifier(notifier);
+    cell.Visit(cellpair, player_notifier, *this, *obj, obj->GetVisibilityRange());
+}
+
+void Map::UpdateObjectsVisibilityFor(Player* player, Cell cell, CellCoord cellpair)
+{
+    acore::VisibleNotifier notifier(*player, false, false);
+
+    cell.SetNoCreate();
+    TypeContainerVisitor<acore::VisibleNotifier, WorldTypeMapContainer > world_notifier(notifier);
+    TypeContainerVisitor<acore::VisibleNotifier, GridTypeMapContainer  > grid_notifier(notifier);
+    cell.Visit(cellpair, world_notifier, *this, *player->m_seer, player->GetSightRange());
+    cell.Visit(cellpair, grid_notifier, *this, *player->m_seer, player->GetSightRange());
+
+    // send data
+    notifier.SendToSelf();
+}
+
 void Map::SendInitSelf(Player* player)
 {
 #if defined(ENABLE_EXTRAS) && defined(ENABLE_EXTRA_LOGS)

src/server/game/Maps/Map.h

@@ -407,8 +407,8 @@ public:
     void AddObjectToSwitchList(WorldObject* obj, bool on);
     virtual void DelayedUpdate(const uint32 diff);
 
-    //void UpdateObjectVisibility(WorldObject* obj, Cell cell, CellCoord cellpair);
-    //void UpdateObjectsVisibilityFor(Player* player, Cell cell, CellCoord cellpair);
+    void UpdateObjectVisibility(WorldObject* obj, Cell cell, CellCoord cellpair);
+    void UpdateObjectsVisibilityFor(Player* player, Cell cell, CellCoord cellpair);
 
     void resetMarkedCells() { marked_cells.reset(); }
     bool isCellMarked(uint32 pCellId) { return marked_cells.test(pCellId); }

src/server/scripts/Commands/cs_debug.cpp

@@ -108,6 +108,23 @@ public:
             return false;
         }
 
+        // Dump camera locations
+        if (CinematicSequencesEntry const* cineSeq = sCinematicSequencesStore.LookupEntry(id))
+        {
+            std::unordered_map<uint32, FlyByCameraCollection>::const_iterator itr = sFlyByCameraStore.find(cineSeq->cinematicCamera);
+            if (itr != sFlyByCameraStore.end())
+            {
+                handler->PSendSysMessage("Waypoints for sequence %u, camera %u", id, cineSeq->cinematicCamera);
+                uint32 count = 1 ;
+                for (FlyByCamera cam : itr->second)
+                {
+                    handler->PSendSysMessage("%02u - %7ums [%f, %f, %f] Facing %f (%f degrees)", count, cam.timeStamp, cam.locations.x, cam.locations.y, cam.locations.z, cam.locations.w, cam.locations.w * (180 / M_PI));
+                    count++;
+                }
+                handler->PSendSysMessage("%lu waypoints dumped", itr->second.size());
+            }
+        }
+
         handler->GetSession()->GetPlayer()->SendCinematicStart(id);
         return true;
     }

src/server/shared/DataStores/DBCStore.h

@@ -11,6 +11,121 @@
 #include "DBCStorageIterator.h"
 #include "Errors.h"
 #include <vector>
+#include <G3D/Vector3.h>
+#include <G3D/AABox.h>
+
+ // Structures for M4 file. Source: https://wowdev.wiki
+template<typename T>
+struct M2SplineKey
+{
+    T p0;
+    T p1;
+    T p2;
+};
+
+struct M2Header
+{
+    char   Magic[4];               // "MD20"
+    uint32 Version;                // The version of the format.
+    uint32 lName;                  // Length of the model's name including the trailing \0
+    uint32 ofsName;                // Offset to the name, it seems like models can get reloaded by this name.should be unique, i guess.
+    uint32 GlobalModelFlags;       // 0x0001: tilt x, 0x0002: tilt y, 0x0008: add 2 fields in header, 0x0020: load .phys data (MoP+), 0x0080: has _lod .skin files (MoP?+), 0x0100: is camera related.
+    uint32 nGlobalSequences;
+    uint32 ofsGlobalSequences;     // A list of timestamps.
+    uint32 nAnimations;
+    uint32 ofsAnimations;          // Information about the animations in the model.
+    uint32 nAnimationLookup;
+    uint32 ofsAnimationLookup;     // Mapping of global IDs to the entries in the Animation sequences block.
+    uint32 nBones;                 // MAX_BONES = 0x100
+    uint32 ofsBones;               // Information about the bones in this model.
+    uint32 nKeyBoneLookup;
+    uint32 ofsKeyBoneLookup;       // Lookup table for key skeletal bones.
+    uint32 nVertices;
+    uint32 ofsVertices;            // Vertices of the model.
+    uint32 nViews;                 // Views (LOD) are now in .skins.
+    uint32 nSubmeshAnimations;
+    uint32 ofsSubmeshAnimations;   // Submesh color and alpha animations definitions.
+    uint32 nTextures;
+    uint32 ofsTextures;            // Textures of this model.
+    uint32 nTransparency;
+    uint32 ofsTransparency;        // Transparency of textures.
+    uint32 nUVAnimation;
+    uint32 ofsUVAnimation;
+    uint32 nTexReplace;
+    uint32 ofsTexReplace;          // Replaceable Textures.
+    uint32 nRenderFlags;
+    uint32 ofsRenderFlags;         // Blending modes / render flags.
+    uint32 nBoneLookupTable;
+    uint32 ofsBoneLookupTable;     // A bone lookup table.
+    uint32 nTexLookup;
+    uint32 ofsTexLookup;           // The same for textures.
+    uint32 nTexUnits;              // possibly removed with cata?!
+    uint32 ofsTexUnits;            // And texture units. Somewhere they have to be too.
+    uint32 nTransLookup;
+    uint32 ofsTransLookup;         // Everything needs its lookup. Here are the transparencies.
+    uint32 nUVAnimLookup;
+    uint32 ofsUVAnimLookup;
+    G3D::AABox BoundingBox;            // min/max( [1].z, 2.0277779f ) - 0.16f seems to be the maximum camera height
+    float  BoundingSphereRadius;
+    G3D::AABox CollisionBox;
+    float  CollisionSphereRadius;
+    uint32 nBoundingTriangles;
+    uint32 ofsBoundingTriangles;   // Our bounding volumes. Similar structure like in the old ofsViews.
+    uint32 nBoundingVertices;
+    uint32 ofsBoundingVertices;
+    uint32 nBoundingNormals;
+    uint32 ofsBoundingNormals;
+    uint32 nAttachments;
+    uint32 ofsAttachments;         // Attachments are for weapons etc.
+    uint32 nAttachLookup;
+    uint32 ofsAttachLookup;        // Of course with a lookup.
+    uint32 nEvents;
+    uint32 ofsEvents;              // Used for playing sounds when dying and a lot else.
+    uint32 nLights;
+    uint32 ofsLights;              // Lights are mainly used in loginscreens but in wands and some doodads too.
+    uint32 nCameras;               // Format of Cameras changed with version 271!
+    uint32 ofsCameras;             // The cameras are present in most models for having a model in the Character-Tab.
+    uint32 nCameraLookup;
+    uint32 ofsCameraLookup;        // And lookup-time again.
+    uint32 nRibbonEmitters;
+    uint32 ofsRibbonEmitters;      // Things swirling around. See the CoT-entrance for light-trails.
+    uint32 nParticleEmitters;
+    uint32 ofsParticleEmitters;    // Spells and weapons, doodads and loginscreens use them. Blood dripping of a blade? Particles.
+    uint32 nBlendMaps;             // This has to deal with blending. Exists IFF (flags & 0x8) != 0. When set, textures blending is overriden by the associated array. See M2/WotLK#Blend_mode_overrides
+    uint32 ofsBlendMaps;           // Same as above. Points to an array of uint16 of nBlendMaps entries -- From WoD information.};
+};
+
+struct M2Array
+{
+    uint32_t number;
+    uint32 offset_elements;
+};
+struct M2Track
+{
+    uint16_t interpolation_type;
+    uint16_t global_sequence;
+    M2Array timestamps;
+    M2Array values;
+};
+
+struct M2Camera
+{
+    uint32_t type; // 0: portrait, 1: characterinfo; -1: else (flyby etc.); referenced backwards in the lookup table.
+    float fov; // No radians, no degrees. Multiply by 35 to get degrees.
+    float far_clip;
+    float near_clip;
+    M2Track positions; // How the camera's position moves. Should be 3*3 floats.
+    G3D::Vector3 position_base;
+    M2Track target_positions; // How the target moves. Should be 3*3 floats.
+    G3D::Vector3 target_position_base;
+    M2Track rolldata; // The camera can have some roll-effect. Its 0 to 2*Pi.
+};
+
+struct FlyByCamera
+{
+    uint32 timeStamp;
+    G3D::Vector4 locations;
+};
 
 /// Interface class for common access
 class DBCStorageBase

src/server/shared/DataStores/DBCStructure.h

@@ -672,25 +672,23 @@ struct ChrRacesEntry
     uint32      expansion;                                  // 68 (0 - original race, 1 - tbc addon, ...)
 };
 
-/* not used
 struct CinematicCameraEntry
 {
     uint32      id;                                         // 0 index
     char*       filename;                                   // 1
     uint32      soundid;                                    // 2 in SoundEntries.dbc or 0
-    float       start_x;                                    // 3
-    float       start_y;                                    // 4
-    float       start_z;                                    // 5
-    float       unk6;                                       // 6 speed?
+    float       base_x;                                     // 3
+    float       base_y;                                     // 4
+    float       base_z;                                     // 5
+    float       base_o;                                     // 6
 };
-*/
 
 struct CinematicSequencesEntry
 {
     uint32      Id;                                         // 0 index
     //uint32      unk1;                                     // 1 always 0
-    //uint32      cinematicCamera;                          // 2 id in CinematicCamera.dbc
-    // 3-9 always 0
+    uint32      cinematicCamera;                            // 2 id in CinematicCamera.dbc
+                                                            // 3-9 always 0
 };
 
 struct CreatureDisplayInfoEntry

src/server/shared/DataStores/DBCfmt.h

@@ -22,7 +22,8 @@ char constexpr CharTitlesEntryfmt[] = "nxssssssssssssssssxssssssssssssssssxi";
 char constexpr ChatChannelsEntryfmt[] = "nixssssssssssssssssxxxxxxxxxxxxxxxxxx"; // ChatChannelsEntryfmt, index not used (more compact store)
 char constexpr ChrClassesEntryfmt[] = "nxixssssssssssssssssxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxixii";
 char constexpr ChrRacesEntryfmt[] = "nxixiixixxxxixssssssssssssssssxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxi";
-char constexpr CinematicSequencesEntryfmt[] = "nxxxxxxxxx";
+char constexpr CinematicCameraEntryfmt[] = "nsiffff";
+char constexpr CinematicSequencesEntryfmt[] = "nxixxxxxxx";
 char constexpr CreatureDisplayInfofmt[] = "nixxfxxxxxxxxxxx";
 char constexpr CreatureFamilyfmt[] = "nfifiiiiixssssssssssssssssxx";
 char constexpr CreatureModelDatafmt[] = "nxxxfxxxxxxxxxxffxxxxxxxxxxx";