Updated to 8.2.0.31429 (scripts disabled atm, they still need updated)

Code Port from TrinityCore https://github.com/TrinityCore/TrinityCore
Casc from WoW-Tools https://github.com/WoW-Tools/CASCExplorer

Source/Game/Entities/Object/Update/UpdateMask.cs

@@ -24,88 +24,127 @@ namespace Game.Entities
 {
     public class UpdateMask
     {
-        public UpdateMask(uint valuesCount = 0)
-        {
-            _fieldCount = valuesCount;
-            _blockCount = (valuesCount + 32 - 1) / 32;
+        int _blockCount;
+        int _blocksMaskCount;
+        uint[] _blocks;
+        uint[] _blocksMask;
 
-            _mask = new BitArray((int)valuesCount, false);
+        public UpdateMask(int bits, uint[] input = null)
+        {
+            _blockCount = (bits + 31) / 32;
+            _blocksMaskCount = (_blockCount + 31) / 32;
+
+
+            _blocks = new uint[_blockCount];
+            _blocksMask = new uint[_blocksMaskCount];
+
+            if (input != null)
+            {
+                int block = 0;
+                for (; block < input.Length; ++block)
+                    if ((_blocks[block] = input[block]) != 0)
+                        _blocksMask[GetBlockIndex(block)] |= (uint)GetBlockFlag(block);
+
+                for (; block < _blockCount; ++block)
+                    _blocks[block] = 0;
+            }
         }
 
-        public void SetCount(int valuesCount)
+        public uint GetBlocksMask(uint index)
         {
-            _fieldCount = (uint)valuesCount;
-            _blockCount = (uint)(valuesCount + 32 - 1) / 32;
-
-            _mask = new BitArray((int)valuesCount, false);
+            return _blocksMask[index];
         }
 
-        public uint GetCount() { return _fieldCount; }
-
-        public virtual void AppendToPacket(ByteBuffer data)
+        public uint GetBlock(uint index)
         {
-            data.WriteUInt8(_blockCount);
-            var maskArray = new byte[_blockCount << 2];
-
-            _mask.CopyTo(maskArray, 0);
-            data.WriteBytes(maskArray);
+            return _blocks[index];
         }
 
-        public bool GetBit(int index)
+        public bool this[int index]
         {
-            return _mask.Get(index);
+            get
+            {
+                return (_blocks[index / 32] & (1 << (index % 32))) != 0;
+            }
         }
 
-        public void SetBit(int index)
+        public void Reset(int index)
         {
-            _mask.Set(index, true);
+            int blockIndex = GetBlockIndex(index);
+            if ((_blocks[blockIndex] &= ~(uint)GetBlockFlag(index)) == 0)
+                _blocksMask[GetBlockIndex(blockIndex)] &= ~(uint)GetBlockFlag(blockIndex);
         }
 
-        void UnsetBit(int index)
+        public void ResetAll()
         {
-            _mask.Set(index, false);
+            Array.Clear(_blocks, 0, _blocks.Length);
+            Array.Clear(_blocksMask, 0, _blocksMask.Length);
         }
 
-        public void Clear()
+        public void Set(int index)
         {
-            _mask.SetAll(false);
+            int blockIndex = GetBlockIndex(index);
+            _blocks[blockIndex] |= (uint)GetBlockFlag(index);
+            _blocksMask[GetBlockIndex(blockIndex)] |= (uint)GetBlockFlag(blockIndex);
         }
 
-        protected uint _fieldCount;
-        protected uint _blockCount;
-        protected BitArray _mask;
-    }
-
-    public class DynamicUpdateMask : UpdateMask
-    {
-        public DynamicUpdateMask(uint valuesCount) : base(valuesCount) { }
-
-        public void EncodeDynamicFieldChangeType(DynamicFieldChangeType changeType, UpdateType updateType)
+        public void SetAll()
         {
-            _updateType = updateType;
-            DynamicFieldChangeType = (uint)(_blockCount | ((uint)(changeType & Entities.DynamicFieldChangeType.ValueAndSizeChanged) * ((3 - (int)updateType /*this part evaluates to 0 if update type is not VALUES*/) / 3)));
+            for (int i = 0; i < _blocksMaskCount; ++i)
+                _blocksMask[i] = 0xFFFFFFFF;
+            for (int i = 0; i < _blockCount; ++i)
+                _blocks[i] = 0xFFFFFFFF;
+
+            if ((_blocksMaskCount % 32) != 0)
+            {
+                int unused = 32 - (_blocksMaskCount % 32);
+                _blocksMask[_blocksMaskCount - 1] &= (0xFFFFFFFF >> unused);
+            }
+
+            if ((_blockCount % 32) != 0)
+            {
+                int unused = 32 - (_blockCount % 32);
+                _blocks[_blockCount - 1] &= (0xFFFFFFFF >> unused);
+            }
         }
 
-        public override void AppendToPacket(ByteBuffer data)
+        public void AND(UpdateMask right)
         {
-            data.WriteUInt16(DynamicFieldChangeType);
-            if (DynamicFieldChangeType.HasAnyFlag((uint)Entities.DynamicFieldChangeType.ValueAndSizeChanged) && _updateType == UpdateType.Values)
-                data.WriteUInt32(_fieldCount);
+            for (int i = 0; i < _blocksMaskCount; ++i)
+                _blocksMask[i] &= right._blocksMask[i];
 
-            var maskArray = new byte[_blockCount << 2];
-
-            _mask.CopyTo(maskArray, 0);
-            data.WriteBytes(maskArray);
+            for (int i = 0; i < _blockCount; ++i)
+            {
+                if (!Convert.ToBoolean(_blocks[i] &= right._blocks[i]))
+                    _blocksMask[GetBlockIndex(i)] &= ~(uint)GetBlockFlag(i);
+            }
         }
 
-        public uint DynamicFieldChangeType;
-        public UpdateType _updateType;
-    }
+        public void OR(UpdateMask right)
+        {
+            for (int i = 0; i < _blocksMaskCount; ++i)
+                _blocksMask[i] |= right._blocksMask[i];
 
-    public enum DynamicFieldChangeType
-    {
-        Unchanged = 0,
-        ValueChanged = 0x7FFF,
-        ValueAndSizeChanged = 0x8000
+            for (int i = 0; i < _blockCount; ++i)
+                _blocks[i] |= right._blocks[i];
+        }
+
+        public static UpdateMask operator &(UpdateMask left, UpdateMask right)
+        {
+            UpdateMask result = left;
+            result.AND(right);
+            return result;
+        }
+
+        public static UpdateMask operator |(UpdateMask left, UpdateMask right)
+        {
+            UpdateMask result = left;
+            result.OR(right);
+            return result;
+        }
+
+        //helpers
+        public static int GetBlockIndex(int bit) { return bit / 32; }
+        public static int GetBlockFlag(int bit) { return 1 << (bit % 32); }
     }
 }