Need help for making a maze game! - MIT App Inventor Help - MIT

I'm currently making a maze game. My requirement of the game is that make a function 'touch_colour' so that the player can detect the colour of the wall to prevent colliding with the wall; also with procedures 'move_up', 'move_down', 'move_left' and 'move_right' to let the player move in directions. Here is a screenshot of my initialized coding of the maze game. And here is the designer of the maze game. Actually, I'm just confused of the movement, directions and detection of colour of t

Comparison Between Different Block-based Programming Platforms – Duck Learning

App Development – This is a development blog written by students who are making apps in the MIT App Inventor

Development of the Labyrinth game with App Inventor

How do I use a looping block without freezing the app? - MIT App Inventor Help - MIT App Inventor Community

Tilting game from last week – CoderDojo Athy

Development of the Labyrinth game with App Inventor

Maze game in Thunkable

Get out of a maze. Code proposal - App Showcase - MIT App Inventor Community

App Inventor Game Ideas: 15 Easy Games for Beginners to Make – No Code Lass

Need help for making a maze game! - MIT App Inventor Help - MIT App Inventor Community

Get out of a maze. Code proposal - App Showcase - MIT App Inventor Community