How do I evaluate the 4 directions

would like that when the robot touches the yellow cube, evaluate the 4 directions:

Up, Right, Left, Down, and chosse one of the possible free directions.

PLEASE HELP ME !! <img src="{SMILIES_PATH}/icon_cry.gif" alt=":cry:" title="Crying or Very Sad">

Feel free to change all the programming code. <img src="{SMILIES_PATH}/icon_e_geek.gif" alt=":geek:" title="Geek">

Here is a video that I want to do:

image:

https://drive.google.com/file/d/0B9uHUU ... sp=sharing

file .capx

https://drive.google.com/file/d/0B9uHUU ... sp=sharing

Just check if the place on the top, left, bottom or/and right of the yellow cube is free.

Add a helper sprite (just a 1x1 px sprite) for collision / overlapping check. Then set the position of this helper spriter in all directions of the yellow cube (when the player is over that) and check if the helper is overlaying or collision a wall. If not the player can pass it.

I want to know is: how do I choose among the possible solutions?

NOT CONCEPTUALLY !!!!