Detecting collisions between items

As a continuation of the preceding recipe, we can detect whether a rectangle item overlaps with another one. In fact, this can be achieved, assuming that we are working with shapes contained in rectangular boxes, using the find_overlapping() method from the Canvas class.

Getting ready

This application extends the preceding one by adding four green rectangles to the canvas and highlighting the one that is touched by a blue rectangle moved using the arrow keys:

How to do it...

Since this script has many similarities with the preceding...