Core/Movement: Add time synchronisation (Needs tested)

Port From (https://github.com/TrinityCore/TrinityCore/commit/c19a4db1c12b8864d6c486ee8e2f0e058fb4155a)
2021-12-02 22:34:04 -05:00
parent f5695f0cf2
commit a96fe1e47f
11 changed files with 586 additions and 75 deletions
@@ -18,6 +18,7 @@
 using Framework.Constants;
 using Framework.GameMath;
 using System;
+using System.Collections.Generic;
 using System.Numerics;

 public static class MathFunctions
@@ -269,6 +270,22 @@ public static class MathFunctions
        return (ushort)((byte)l | (ushort)h << 8);
    }

+    public static double Variance(this IEnumerable<uint> source)
+    {
+        int n = 0;
+        double mean = 0;
+        double M2 = 0;
+
+        foreach (var x in source)
+        {
+            n = n + 1;
+            double delta = x - mean;
+            mean = mean + delta / n;
+            M2 += delta * (x - mean);
+        }
+        return M2 / (n - 1);
+    }
+
    //3d math
    public static Box toWorldSpace(Matrix4x4 rotation, Vector3 translation, Box box)
    {