I lost my AI!

Hello, this is my game. I have been in hell for the last 3 days in order to finish this mess anyways, in this game you help a robot by guiding him using conrol blocks that you place down, and your goal is to collect all the discs in the level Controls: use mouse to chose a block and place it down (left click)escape to pause (usefull to restart the current level) I realize that this game may seem a bit off topic, but this is for a very good reason. Real AI is hard and intricuit. Scince overambiti...