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

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

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