Microbit Maze

maze.py

from microbit import *

MAZE = [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
        [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
        [1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1],
        [1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1],
        [1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1],
        [1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1],
        [1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1],
        [1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1],
        [1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1],
        [1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0],
        [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]]

def wall(r, c):
    if not (0 <= r < len(MAZE) and 0 <= c < len(MAZE[0])):
        return 0
    return MAZE[r][c]

pos = [1, 1]
i = 0
while True:
    # Display the base pixels
    for mr in range(5):
        for mc in range(5):
            display.set_pixel(mr, mc, wall(mr + pos[0] - 2, mc + pos[1] - 2) * 9)
    
    # Movement
    if any([button_a.was_pressed(),
           button_b.was_pressed()]):
        dir = [0, 0]
        x = accelerometer.get_x()
        y = accelerometer.get_y()
        print(x,y)
        if abs(x) > abs(y):
            if x > 20:
                dir = [1, 0]
            elif x < -20:
                dir = [-1, 0]
        elif abs(y) > abs(x):
            if y > 20:
                dir = [0, 1]
            elif y < -20:
                dir = [0, -1]
        
        npos = [pos[0] + dir[0], pos[1] + dir[1]]
        if not wall(npos[0], npos[1]):
            pos = npos
    
    # Winning position
    if pos == [9, 11]:
        display.scroll("YOU WIN")
        pos = [1, 1]
    
    # Display the cursor
    display.set_pixel(2, 2, 9 * (i % 2))
    i += 1
    sleep(50)