netlogo walls
set breadth-patches patches with[(pycor > (-(breadth)) and pycor < breadth and pxcor = lengthrec) or(pycor > (-(breadth)) and pycor < breadth and pxcor = (-(lengthrec))) ]
set length-patches patches with[(pxcor > (-(lengthrec)) and pxcor < lengthrec and pycor = (-(breadth - 1))) or (pxcor > (-(lengthrec)) and pxcor < lengthrec and pycor = (breadth - 1))]
set gap-patches patches with [pxcor > (gap * (-1)) and pxcor < gap and pycor =(breadth - 1)]
set length-patches length-patches with [not member? self gap-patches]
ask breadth-patches[
sprout-walls 1[set color 2
set size 0.5 set heading 180 fd 0.25
if-else(pxcor < 0)[set heading 90][set heading 270] fd 0.25]
sprout-walls 1[set color 2
set size 0.5 set heading 360 fd 0.25
if-else(pxcor < 0)[set heading 90][set heading 270] fd 0.25]
]
ask length-patches[
sprout-walls 1[set color 2
set size 0.5 set heading 90 fd 0.25
if-else(pycor < 0)[set heading 180][set heading 0] fd 0.25
]
sprout-walls 1[set color 2
set size 0.5 set heading 270 fd 0.25
if-else(pycor < 0)[set heading 180][set heading 0] fd 0.25
]
]
end