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61 lines
1.3 KiB
Batchfile
61 lines
1.3 KiB
Batchfile
## blindmaz.cmd -- solve maze by walking a left-handed blind mouse
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#7 set $seed
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# either maze.cmd, sharpmaz.cmd or floodmaz.cmd
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execute-file floodmaz.cmd
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set %dotc &asc "•" # alternatively use "."
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set $curchar %dotc
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set %x &add $curcol 1
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set %y $curline
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end-of-line
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set %stopcol &sub $curcol 1
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# X-Y offset for absolute direction: east, south, west, north
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set %DX0 1
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set %DY0 0
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set %DX1 0
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set %DY1 1
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set %DX2 -1
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set %DY2 0
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set %DX3 0
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set %DY3 -1
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set %absD 0 # absolute direction: looking EAST
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!while &les %x %stopcol
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# try move on left, right or front
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set %relD 3 # 3, 0, 1, 2 == left, front, right, back
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!while ¬ &equ %relD 2
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set %newD &mod &add %absD %relD 4
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set %offX &ind &cat "%DX" %newD
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set %offY &ind &cat "%DY" %newD
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set %nx &add %x %offX
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set %ny &add %y %offY
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set $curline %ny
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set $curcol %nx
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!if &or &equ $curchar 32 &equ $curchar %dotc
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!if &equ $curchar 32
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set %C %dotc
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!else
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set %C &asc " " # erase (or highlight) when backtracking
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!endif
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set %absD %newD
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set $curchar %C
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set $curline %y
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set $curcol %x
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set $curchar %C
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set %x &add %nx %offX
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set %y &add %ny %offY
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update-screen
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!goto moveon
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!endif
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set %relD &mod &add %relD 1 4
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!endwhile
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# else turn around
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set %absD &mod &add %absD 2 4 # face back!
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:moveon
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!endwhile
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set $curcol &add %x -1
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unmark-buffer
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