Core/Movement: Implement speed changes for PointMovementGenerator

src/server/game/Movement/MovementGenerators/PointMovementGenerator.cpp

@@ -33,6 +33,7 @@ void PointMovementGenerator<T>::Initialize(T &unit)
         unit.StopMoving();
 
     unit.AddUnitState(UNIT_STATE_ROAMING|UNIT_STATE_ROAMING_MOVE);
+    i_recalculateSpeed = false;
     Movement::MoveSplineInit init(unit);
     init.MoveTo(i_x, i_y, i_z);
     if (speed > 0.0f)
@@ -53,6 +54,17 @@ bool PointMovementGenerator<T>::Update(T &unit, const uint32 & /*diff*/)
     }
 
     unit.AddUnitState(UNIT_STATE_ROAMING_MOVE);
+
+    if (i_recalculateSpeed && !unit.movespline->Finalized())
+    {
+        i_recalculateSpeed = false;
+        Movement::MoveSplineInit init(unit);
+        init.MoveTo(i_x, i_y, i_z);
+        if (speed > 0.0f) // Default value for point motion type is 0.0, if 0.0 spline will use GetSpeed on unit
+            init.SetVelocity(speed);
+        init.Launch();
+    }
+
     return !unit.movespline->Finalized();
 }
 

src/server/game/Movement/MovementGenerators/PointMovementGenerator.h

@@ -36,6 +36,8 @@ class PointMovementGenerator : public MovementGeneratorMedium< T, PointMovementG
 
         void MovementInform(T &);
 
+        void unitSpeedChanged() { i_recalculateSpeed = true; }
+
         MovementGeneratorType GetMovementGeneratorType() { return POINT_MOTION_TYPE; }
 
         bool GetDestination(float& x, float& y, float& z) const { x=i_x; y=i_y; z=i_z; return true; }
@@ -43,6 +45,7 @@ class PointMovementGenerator : public MovementGeneratorMedium< T, PointMovementG
         uint32 id;
         float i_x, i_y, i_z;
         float speed;
+        bool i_recalculateSpeed;
 };
 
 class AssistanceMovementGenerator : public PointMovementGenerator<Creature>