Core/Movement: no longer randomize knockback directions

src/server/game/Entities/Object/Position.cpp

@@ -108,9 +108,9 @@ void Position::GetSinCos(const float x, const float y, float &vsin, float &vcos)
 
     if (std::fabs(dx) < 0.001f && std::fabs(dy) < 0.001f)
     {
-        float angle = (float)rand_norm()*static_cast<float>(2 * M_PI);
-        vcos = std::cos(angle);
-        vsin = std::sin(angle);
+        float o = NormalizeOrientation(GetOrientation() - M_PI);
+        vcos = std::cos(o);
+        vsin = std::sin(o);
     }
     else
     {