How do I find out if an object is in motion?

I want to create a condition in which if this object is in motion, do a certain function. But the object doesn't have any behavior on it and I'm hoping not to put any. How do I go about making such a condition?

I was hoping if there is something to do with comparing the X value but that would need a global variable to it.

Any help?

Give the object two instance variables, oldX and oldY. Every tick, set oldX to Object.X and oldY to Object.Y. To check if Object is moving, in an event before you update oldX and oldY, check if oldX is different from X OR oldY is different from Y. If one of the two is different, Object has moved.

Thanks. I guess this is the best way to do it.

Another way would be to use a Boolean variable "moving" and set it to true every time you change the object's position.