Core/Spells: Fixed effects targeting the caster not hitting him immediately on spell launch if the spell targets a dest

Port From (https://github.com/TrinityCore/TrinityCore/commit/295c8f63269d966812f37a8bd8e988a9f2dc1235)

Source/Game/Movement/Generators/PathGenerator.cs

@@ -920,6 +920,15 @@ namespace Game.Movement
             return (p1 - p2).LengthSquared();
         }
 
+        public float GetPathLength()
+        {
+            float length = 0.0f;
+            for (var i = 0; i < _pathPoints.Length - 1; ++i)
+                length += (_pathPoints[i + 1] - _pathPoints[i]).Length();
+
+            return length;
+        }
+        
         public void ShortenPathUntilDist(Position pos, float dist) { ShortenPathUntilDist(new Vector3(pos.posX, pos.posY, pos.posZ), dist); }
 
         public void ShortenPathUntilDist(Vector3 target, float dist)

Source/Game/Movement/Generators/PointMovement.cs

@@ -192,7 +192,9 @@ namespace Game.Movement
 
         public void MovementInform(Unit owner)
         {
-            owner.ToCreature()?.GetAI()?.MovementInform(MovementGeneratorType.Point, _movementId);
+            // deliver EVENT_CHARGE to scripts, EVENT_CHARGE_PREPATH is just internal implementation detail of this movement generator
+            uint movementId = _movementId == EventId.ChargePrepath ? EventId.Charge : _movementId;
+            owner.ToCreature()?.GetAI()?.MovementInform(MovementGeneratorType.Point, movementId);
         }
 
         public override void UnitSpeedChanged()