How to get the moving direction when the sprite is following a path

[r000tmnt]

I took reference from the ghosthunting example and set the sprite on the path to follow.
The sprite is facing left as default. So I need to flip it base on the direction.
I've checked both direction and directionAngle with onUpdate event, but the result is undefined in every frame. Also, the vel property says both x and y is 0.
Is there anyway to know which direction the sprite is moving?

[r000tmnt]

After look into the docs. I think I misunderstood the usage of direction from sentry component.
Now I manage to get the direction by calculate the number between waypoint and the pos.