How do I Test for a path on specific objects?

Hi Everyone,

In my game I would to test to see if there is a path from point A to point B, but not avoiding solid objects, but instead by only traveling on specific objects.

Here is an example...

X - Block

O - Empty space

I - Movable space

This version will allow the path to connect up and down:

X I O

O I O

X I X

This version will not allow the path to connect:

X I O

I O O

X I X

Is there a way to do that in construct?