declare -A tile
19. 10. 2022An attempt at almost ‘wave collapse algorithm’. Tiles with 4 nodes, to compare they must be shifted 2 chars. Only compare with left and top.
# Maybe
# ━ ┃ ┏ ┓┗ ┛ ┣ ┳ ┫ ┻ ╋
declare -A tile
tile[·]=____
tile[━]=_b_d
tile[┃]=a_c_
tile[┏]=_bc_
tile[┓]=__cd
tile[┗]=ab__
tile[┛]=a__d
tile[┣]=abc_
tile[┳]=_bcd
tile[┫]=a_cd
tile[┻]=ab_d
tile[╋]=abcd
Shift string (rotate the four nodes)
string="_bc_"
echo ${string:2:2}${string:0:2}
# c__b
# Which is actually a__d
# for first char on the left (d is not allowed) that becomes
# a___, fits are [┃]=a_c_ and [┣]=abc_ and [┗]=ab__
┏ or ┏ or ┏
┃ ┣ ┗
To be continued…
