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| // data contains width * height walkable path entries | |
| // each entry has at most two walls "west" | "north" | |
| // to find all walkable directions from X use the array entries X, X+1 and X+width to construct walls | |
| // grid is 15x15 blocks | |
| const data = [["west","north"],["north"],["west","north"],["north"],["north"],["west","north"],["north"],["north"],["west","north"],["north"],["north"],["north"],["west","north"],["north"],["north"],["west","north"],["west"],["west"],["north"],["west"],["west"],["west"],["west"],["north"],["north"],[],["west"],["north"],["north"],[],["west"],[],["west"],["west"],["north"],[],["west"],["north"],["north"],["west","north"],["north"],[],["west","north"],["north"],["west"],["west"],["north"],["north"],["west"],["north"],["north"],["north"],["north"],["west"],["north"],["north"],["north"],["west"],["west"],["west"],["west","north"],["north"],["west"],["west"],["west","north"],["north"],["north"],["west"],["west","north"],["north"],["west"],["west"],[],["west"],["north"],["west"],["west"],["west"],["west"],["west"],["west","north"],[],["west","north"],[],["west"],["north"],["north"],["west","north"],["north"],[],["west"],["west"],["west"],["north"],[],["west"],["west","north"],[],["north"],["north"],["west","north"],[],["west"],["west","north"],[],["west"],["west"],["north"],["north"],["north"],["west"],["north"],["west","north"],["north"],[],["west"],["north"],["west"],["west"],["north"],["west"],["west","north"],["north"],["west"],["north"],["north"],["west"],["west"],["north"],["west","north"],["north"],["west"],[],["west","north"],["west"],["west"],["north"],[],["north"],["north"],["west"],["west"],["west","north"],[],["west"],["west"],["north"],["north"],[],["west"],["west","north"],["north"],["north"],["west","north"],[],["west"],[],["west"],["west","north"],["west"],["north"],["west","north"],["north"],["west","north"],[],["west"],["north"],["west","north"],[],["west","north"],["north"],["north"],[],["west"],["west"],["west"],[],["west"],["west"],["north"],["west","north"],[],["west"],["north"],["west"],["west","north"],["west","north"],["north"],[],["west"],["north"],["west","north"],["west"],["north"],["west"],["west"],["west"],["north"],["west"],[],["west"],[],["west","north"],["west"],["west","north"],[],["west"],["west"],["north"],["west"],["west"],["north"],["north"],["north"],["north"],[],["north"],[],["west"],[],["north"],[],["north"],["west"],[]] | |
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