another try to improve entity spawning and fix loading but still loading issues

Campofinale/Game/SceneManager.cs

@@ -4,10 +4,12 @@ using Campofinale.Packets.Sc;
 using Campofinale.Resource;
 using Campofinale.Resource.Dynamic;
 using MongoDB.Bson.Serialization.Attributes;
+using System;
 using System.Text.Json.Serialization;
 using static Campofinale.Resource.Dynamic.SpawnerConfig;
 using static Campofinale.Resource.ResourceManager;
 using static Campofinale.Resource.ResourceManager.LevelScene.LevelData;
+using static Campofinale.Resource.ResourceManager.LevelScene.LevelData.LevelFunctionAreaData;
 
 namespace Campofinale.Game
 {
@@ -235,7 +237,6 @@ namespace Campofinale.Game
             {
                 if (scene != null)
                 {
-                    scene.alreadyLoaded = false;
                     scene.Unload();
                 }
             }
@@ -256,11 +257,11 @@ namespace Campofinale.Game
         [BsonIgnore,JsonIgnore]
         public List<Entity> entities = new();
         [BsonIgnore, JsonIgnore]
-        public bool alreadyLoaded = false;
-        [BsonIgnore, JsonIgnore]
         public List<ulong> activeScripts = new();
 
         public List<LevelScript> scripts = new();
+        [BsonIgnore, JsonIgnore]
+        private LevelFunctionRangeData currentAreaRange = new();
         public int GetCollection(string id)
         {
             if (collections.ContainsKey(id))
@@ -367,17 +368,12 @@ namespace Campofinale.Game
                 entities.Add(entity);
             });
 
-
-
-
             UpdateShowEntities();
         }
         
         public void SpawnEntity(Entity en,bool spawnedCheck=true)
         {
-            
             en.spawned = true;
-           
             GetOwner().Send(new PacketScObjectEnterView(GetOwner(), new List<Entity>() { en }));
         }
         public bool GetActiveScript(ulong id)
@@ -392,10 +388,22 @@ namespace Campofinale.Game
                 return true;
             }
         }
+        
+        private void UpdateArea()
+        {
+            LevelScene lv_scene = ResourceManager.GetLevelData(sceneNumId);
+            lv_scene.levelData.functionArea.ranges.ForEach(range =>
+            {
+                if (range.IsObjectInside(GetOwner().position))
+                {
+                    currentAreaRange=range;
+                }
+            });
+        }
         //Bug on scene 101: spawning entities in this way make the game break if you try to load another scene from scene 101
         public async void UpdateShowEntities()
         {
-
+            UpdateArea();
             List<Entity> toSpawn = new();
             List<Entity> toCheck = GetEntityExcludingChar().FindAll(e => e.spawned == false);
             toCheck.Sort((a, b) => a.Position.Distance(GetOwner().position).CompareTo(b.Position.Distance(GetOwner().position)));
@@ -404,6 +412,7 @@ namespace Campofinale.Game
                 
                 if(e.spawned==false && (GetActiveScript(e.belongLevelScriptId) || e.belongLevelScriptId==0))
                 {
+                    if(currentAreaRange.IsObjectInside(e.Position))
                     if (!e.defaultHide)
                     {
                         toSpawn.Add(e);
@@ -423,34 +432,18 @@ namespace Campofinale.Game
                     GetOwner().Send(new PacketScObjectEnterView(GetOwner(), chunk));
                 }
             }
+            List<ulong> toDespawn=new();
+            foreach(Entity en in GetEntityExcludingChar().FindAll(e=> e.spawned==true))
+            {
+               if (!currentAreaRange.IsObjectInside(en.Position))
+               {
+                    toDespawn.Add(en.guid);
+                    en.spawned = false;
+               }
 
-            /* foreach(Entity en in GetEntityExcludingChar())
+            }
-             {
+            if(toDespawn.Count > 0)
-                 float minDis = 100;
+            GetOwner().Send(new PacketScObjectLeaveView(GetOwner(), toDespawn));
-
-                 //todo new system
-                 if (en.Position.DistanceXZ(GetOwner().position) < minDis)
-                 {
-                     if (!en.spawned)
-                     {
-                         SpawnEntity(en);
-
-
-                     }
-                 }
-                 else
-                 {
-
-                     /*if (en.spawned)
-                     {
-
-                         en.spawned = false;
-                         GetOwner().Send(new PacketScObjectLeaveView(GetOwner(), new List<ulong>() { en.guid }));
-                         en.Position=en.BornPos;
-                         en.Rotation = en.Rotation;
-                     }
-                 }
-             }*/
         }
 
         public Player GetOwner()

Campofinale/Packets/Cs/HandleCsSceneMoveStateSet.cs

@@ -11,7 +11,7 @@ namespace Campofinale.Packets.Cs
         {
             CsSceneMoveStateSet req = packet.DecodeBody<CsSceneMoveStateSet>();
             //req.
-
+            
         }
        
     }

Campofinale/Packets/Cs/HandleCsSceneTeleport.cs

@@ -1,5 +1,6 @@
 using Campofinale.Network;
 using Campofinale.Protocol;
+using Campofinale.Utils;
 
 namespace Campofinale.Packets.Cs
 {
@@ -26,6 +27,9 @@ namespace Campofinale.Packets.Cs
             }
             else
             {
+                uint unixTimestamp = (uint)DateTimeOffset.UtcNow.ToUnixTimeSeconds();
+                var generator = new SnowflakeIdGenerator(machineId: 1);
+                long id = generator.GenerateId();
                 ScSceneTeleport t = new()
                 {
                     TeleportReason = req.TeleportReason,
@@ -33,6 +37,8 @@ namespace Campofinale.Packets.Cs
                     Position = req.Position,
                     Rotation = req.Rotation,
                     SceneNumId = req.SceneNumId,
+                    ServerTime = unixTimestamp,
+                    TpUuid= (ulong)id
                 };
                 session.curSceneNumId = t.SceneNumId;
                 session.Send(ScMsgId.ScSceneTeleport, t);

Campofinale/Resource/ResourceManager.cs

@@ -2,6 +2,8 @@
 using Campofinale.Resource.Json;
 using Campofinale.Resource.Table;
 using Newtonsoft.Json;
+using System.Numerics;
+using System;
 using static Campofinale.Resource.ResourceManager.LevelScene;
 
 namespace Campofinale.Resource
@@ -549,6 +551,7 @@ namespace Campofinale.Resource
                 public List<WorldWayPointSets> worldWayPointSets = new();
                 public List<LevelFactoryRegionData> factoryRegions = new();
                 public List<LevelSpawnerData> spawners = new();
+                public LevelFunctionAreaData functionArea = new();
                 public void Merge(LevelData other)
                 {
                     this.sceneId = other.sceneId;
@@ -560,6 +563,7 @@ namespace Campofinale.Resource
                     this.worldWayPointSets.AddRange(other.worldWayPointSets);
                     this.factoryRegions.AddRange(other.factoryRegions);
                     this.spawners.AddRange(other.spawners);
+                    this.functionArea.ranges.AddRange(other.functionArea.ranges);
                 }
                 
                 public class WorldWayPointSets
@@ -567,6 +571,26 @@ namespace Campofinale.Resource
                     public int id;
                     public Dictionary<string, int> pointIdToIndex = new();
                 }
+                
+                public class LevelFunctionAreaData
+                {
+                    public List<LevelFunctionRangeData> ranges = new();
+
+                    public class LevelFunctionRangeData
+                    {
+                        public Vector3f m_center = new();
+                        public Vector3f m_size = new();
+
+                        public bool IsObjectInside(Vector3f position)
+                        {
+                            Vector3f halfSize = m_size * 0.5f;
+
+                            return Math.Abs(position.x - m_center.x) <= halfSize.x &&
+                                   Math.Abs(position.y - m_center.y) <= halfSize.y &&
+                                   Math.Abs(position.z - m_center.z) <= halfSize.z;
+                        }
+                    }
+                }
                 public class LevelSpawnerData
                 {
                     public ulong spawnerId;
@@ -949,6 +973,10 @@ namespace Campofinale.Resource
             public Vector3f()
             {
 
+            }
+            public static Vector3f operator *(Vector3f v, float scalar)
+            {
+                return new Vector3f(v.x * scalar, v.y * scalar, v.z * scalar);
             }
             public Vector3f(float x, float y, float z)
             {

Campofinale/Utils/SnowflakeIdGenerator.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Campofinale.Utils
+{
+    public class SnowflakeIdGenerator
+    {
+        private static readonly DateTime Epoch = new DateTime(2020, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+
+        private readonly int _machineId; // es. 0–31 (5 bit)
+        private int _sequence = 0;
+        private long _lastTimestamp = -1L;
+
+        private readonly object _lock = new object();
+
+        public SnowflakeIdGenerator(int machineId)
+        {
+            _machineId = machineId & 0x1F; // 5 bit
+        }
+
+        public long GenerateId()
+        {
+            lock (_lock)
+            {
+                long timestamp = GetCurrentTimestamp();
+
+                if (timestamp == _lastTimestamp)
+                {
+                    _sequence = (_sequence + 1) & 0xFFF; // 12 bit
+                    if (_sequence == 0)
+                    {
+                        // Attendi il prossimo millisecondo
+                        while ((timestamp = GetCurrentTimestamp()) <= _lastTimestamp) ;
+                    }
+                }
+                else
+                {
+                    _sequence = 0;
+                }
+
+                _lastTimestamp = timestamp;
+
+                return ((timestamp << 22) | ((long)_machineId << 12) | (long)_sequence);
+            }
+        }
+
+        private long GetCurrentTimestamp()
+        {
+            return (long)(DateTime.UtcNow - Epoch).TotalMilliseconds;
+        }
+    }
+
+}