Scratch

I'm trying to make a pac-man game.  I recently found that if the player goes to the ends of the maze and goes up the player is out of the maze.  I tried making more of the colors on the maze solid but it didn't work. I tried making editing the maze so the player won't pass through it.  It still didn't work.... could someone help me?




         Here's the link to what I did so far: http://scratch.mit.edu/projects/KatGames/2420457