Need a little help

Make an array of ints from the map. Make walls -1, paths 0, and also store the coordinates of the start and the end. Mark the start point with a 1. Then loop, marking each 0 adjacent to a positive number with the next highest number untill the destination point gets written. After that, follow back the numbers in reverse order to find the shortest path.

# # # # # # # # # # # . # 1 . . # . . # # . # # . # # # . # # . . . . . . . . # # # # # . # . # # # # . . . . # . # . # # # # # # # . # . # # . # . . . . # . # # . . . # . . . . # # # # # # # # # # # # # # # # # # # # # # . # 1 2 . # . . # # . # # . # # # . # # . . . . . . . . # # # # # . # . # # # # . . . . # . # . # # # # # # # . # . # # . # . . . . # . # # . . . # . . . . # # # # # # # # # # # # # # # # # # # # # # . # 1 2 3 # . . # # . # # 3 # # # . # # . . . . . . . . # # # # # . # . # # # # . . . . # . # . # # # # # # # . # . # # . # . . . . # . # # . . . # . . . . # # # # # # # # # # # # # # # # # # # # # # . # 1 2 3 # . . # # . # # 3 # # # . # # . . . 4 . . . . # # # # # . # . # # # # . . . . # . # . # # # # # # # . # . # # . # . . . . # . # # . . . # . . . . # # # # # # # # # # # # # # # # # # # # # # . # 1 2 3 # . . # # . # # 3 # # # . # # . . 5 4 5 . . . # # # # # 5 # . # # # # . . . . # . # . # # # # # # # . # . # # . # . . . . # . # # . . . # . . . . # # # # # # # # # # # # # # # # # # # # # # . # 1 2 3 # . . # # . # # 3 # # # . # # 7 6 5 4 5 6 7 . # # # # # 5 # 7 # # # # . . 7 6 # . # . # # # # # # # . # . # # . # . . . . # . # # . . . # . . . . # # # # # # # # # # # # # # # # # # # # # # . # 1 2 3 # . . # # 8 # # 3 # # # . # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # . 8 7 6 # 8 # . # # # # # # # . # . # # . # . . . . # . # # . . . # . . . . # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # . . # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # . # # # # # # # 9 # . # # . # . . . . # . # # . . . # . . . . # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # . A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # . # # # # # # # 9 # . # # . # . . . A # . # # . . . # . . . . # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # . # # # # # # # 9 # . # # . # . . B A # . # # . . . # . B . . # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # . # # # # # # # 9 # . # # . # . C B A # . # # . . . # C B C . # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # . # # # # # # # 9 # . # # . # D C B A # . # # . . . # C B C D # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # . # # # # # # # 9 # . # # . # D C B A # E # # . . E # C B C D # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # . # # # # # # # 9 # F # # . # D C B A # E # # . F E # C B C D # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 #10 # # # # # # # 9 # F # # . # D C B A # E # #10 F E # C B C D # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # + # # # # # # # 9 # F # # . # D C B A # E # #10 F E # C B C D # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # + # # # # # # # 9 # + # # . # D C B A # E # #10 F E # C B C D # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # + # # # # # # # 9 # + # # . # D C B A # + # #10 F E # C B C D # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # + # # # # # # # 9 # + # # . # D C B A # + # #10 F E # C B C + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # + # # # # # # # 9 # + # # . # D C B A # + # #10 F E # C B + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # + # # # # # # # 9 # + # # . # D C B A # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # + # # # # # # # 9 # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # 8 # + # # # # # # # + # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # 7 # # # # 9 8 7 6 # + # + # # # # # # # + # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 6 7 8 # # # # # 5 # + # # # # 9 8 7 6 # + # + # # # # # # # + # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 5 + 7 8 # # # # # 5 # + # # # # 9 8 7 6 # + # + # # # # # # # + # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 4 + + 7 8 # # # # # 5 # + # # # # 9 8 7 6 # + # + # # # # # # # + # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # 3 # # # 9 # # 7 6 5 + + + 7 8 # # # # # 5 # + # # # # 9 8 7 6 # + # + # # # # # # # + # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 2 3 # B A # # 8 # # + # # # 9 # # 7 6 5 + + + 7 8 # # # # # 5 # + # # # # 9 8 7 6 # + # + # # # # # # # + # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # 1 + 3 # B A # # 8 # # + # # # 9 # # 7 6 5 + + + 7 8 # # # # # 5 # + # # # # 9 8 7 6 # + # + # # # # # # # + # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # 9 # + + 3 # B A # # 8 # # + # # # 9 # # 7 6 5 + + + 7 8 # # # # # 5 # + # # # # 9 8 7 6 # + # + # # # # # # # + # + # # . # D C B + # + # #10 F E # C + + + # # # # # # # # # # # # # # # # # # # # # # . # M + . # . . # # . # # + # # # . # # . . . + + + . . # # # # # . # + # # # # . . . . # + # C # # # # # # # + # + # # . # . . . + # + # # . . . # . + + + # # # # # # # # # # #