Trigger a event when player moved in a circle

Hello,

I wonder if there is a good way to do this: I have a player which is freemove to where the cursor is. I would like to trigger spawn an object when player moved a circle in certain time. (clockwise or counter-clockwise)

It looks like this:

<img src="https://dl.dropbox.com/u/1396615/bugImage/circle.png" border="0" />

I have tried this way but its not very good, sometimes player randomly create objects.

<img src="https://dl.dropbox.com/u/1396615/bugImage/2013-02-23%2014_32_19-Construct%202%20%28Administrator%29%20-%20GeneralGameplay.png" border="0" />

This plugin may be useful for this:

http://www.scirra.com/forum/plugin-unistroke-gesture-recognizer_topic48720.html

Thanks R0J0hound.

The gesture recognizer looks pretty cool. but it might be hard to apply it in my game. Since the tracer will be player instead of mouse cursor or touch. and player is always moving around so its hard to know when starts to "draw" and when ends.