message: Fixed yaw issue
diff: @@ -43,7 +43,7 @@ class QuadXAPDynamics : public MultirotorDynamics {
  // yaw cw
  virtual double u4(double * o) override
  {
  - return (o[0] + o[1]) - (o[2] + o[3]);
  + return (o[2] + o[3]) - (o[0] + o[1]);
  }
  // motor direction for animation
  