globals [setup1? setup2? hbar? vbar?]

to setup
ca
set setup1? 0
set setup2? 0
set hbar? 0
set vbar? 0
ask patches [set pcolor gray + 4]
ask patches with [(pxcor < 20) and (pxcor > -20) and (pycor < 20) and (pycor > -20)] [set pcolor gray - 4]
crt 4
ask turtle 0 [set shape "square" set size 5 setxy -16 15 set color gray - 4]
ask turtle 1 [set shape "square" set size 5 setxy 16 15 set color gray - 4]
ask turtle 2 [set shape "square" set size 5 setxy 16 -15 set color gray - 4]
ask turtle 3 [set shape "square" set size 5 setxy -16 -15 set color gray - 4]
end

to go
ifelse setup1? = 0 [setup set setup1? 1] [ 
if hbar? = 1 [insert-horizontal-bar]
if vbar? = 1 [insert-vertical-bar]
ask turtles [
if arrows = "none" [set1 set2]
if arrows = "clockwise" [chase-arrow-clockwise]
if arrows = "counterclockwise" [chase-arrow-counterclockwise]
]
]
end

;ask patches with [pcolor = white] [set pcolor gray - 4]

to set1
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "square lit"]
ask turtle 2 [set shape "square lit"]
ask turtle 1 [set shape "square"]
ask turtle 3 [set shape "square"]
end

to set2
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 1 [set shape "square lit"]
ask turtle 3 [set shape "square lit"]
ask turtle 0 [set shape "square"]
ask turtle 2 [set shape "square"]
end

to go-colors
ifelse setup2? = 0 [setup set setup2? 1] [
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
ask turtles [
if vary-color = "horizontal" [go-horizontal]
if vary-color = "vertical" [go-vertical]
if vary-color = "chase clockwise" [go-chase-clockwise]
if vary-color = "chase counterclockwise" [go-chase-counterclockwise]
]
]
end

to go-horizontal
set1-h
set2-h
end

to set1-h
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "square lit h1"]
ask turtle 2 [set shape "square lit h2"]
ask turtle 1 [set shape "square"]
ask turtle 3 [set shape "square"]
end

to set2-h
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 1 [set shape "square lit h1"]
ask turtle 3 [set shape "square lit h2"]
ask turtle 0 [set shape "square"]
ask turtle 2 [set shape "square"]
end

to go-vertical
set1-v
set2-v
end

to set1-v
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "square lit h1"]
ask turtle 2 [set shape "square lit h2"]
ask turtle 1 [set shape "square"]
ask turtle 3 [set shape "square"]
end

to set2-v
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 1 [set shape "square lit h2"]
ask turtle 3 [set shape "square lit h1"]
ask turtle 0 [set shape "square"]
ask turtle 2 [set shape "square"]
end

to go-chase-clockwise
set1-c
set2-c
set3-c
set4-c
end

to set1-c
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "square lit h1"]
ask turtle 2 [set shape "square lit h2"]
ask turtle 1 [set shape "square"]
ask turtle 3 [set shape "square"]
end

to set2-c
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 1 [set shape "square lit h1"]
ask turtle 3 [set shape "square lit h2"]
ask turtle 0 [set shape "square"]
ask turtle 2 [set shape "square"]
end

to set3-c
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 1 [set shape "square"]
ask turtle 3 [set shape "square"]
ask turtle 0 [set shape "square lit h2"]
ask turtle 2 [set shape "square lit h1"]
end

to set4-c
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 1 [set shape "square lit h2"]
ask turtle 3 [set shape "square lit h1"]
ask turtle 0 [set shape "square"]
ask turtle 2 [set shape "square"]
end

to go-chase-counterclockwise
set1-cc
set2-cc
set3-cc
set4-cc
end

to set1-cc
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 1 [set shape "square lit h2"]
ask turtle 3 [set shape "square lit h1"]
ask turtle 0 [set shape "square"]
ask turtle 2 [set shape "square"]
end

to set2-cc
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 1 [set shape "square"]
ask turtle 3 [set shape "square"]
ask turtle 0 [set shape "square lit h2"]
ask turtle 2 [set shape "square lit h1"]
end

to set3-cc
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 1 [set shape "square lit h1"]
ask turtle 3 [set shape "square lit h2"]
ask turtle 0 [set shape "square"]
ask turtle 2 [set shape "square"]
end

to set4-cc
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "square lit h1"]
ask turtle 2 [set shape "square lit h2"]
ask turtle 1 [set shape "square"]
ask turtle 3 [set shape "square"]
end

to chase-arrow-clockwise
set-cac1
set-cac2
set-cac3
set-cac4
end

to set-cac1
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "chase arrow" set heading 45]
ask turtle 1 [set shape "square"]
ask turtle 2 [set shape "chase arrow" set heading 225]
ask turtle 3 [set shape "square"]
end

to set-cac2
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "square"]
ask turtle 1 [set shape "chase arrow" set heading 135]
ask turtle 2 [set shape "square"]
ask turtle 3 [set shape "chase arrow" set heading 315]
end

to set-cac3
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "chase arrow" set heading 45]
ask turtle 1 [set shape "square"]
ask turtle 2 [set shape "chase arrow" set heading 225]
ask turtle 3 [set shape "square"]
end

to set-cac4
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "square"]
ask turtle 1 [set shape "chase arrow" set heading 135]
ask turtle 2 [set shape "square"]
ask turtle 3 [set shape "chase arrow" set heading 315]
end

to chase-arrow-counterclockwise
set-cacc1
set-cacc2
set-cacc3
set-cacc4
end

to set-cacc1
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "chase arrow" set heading 225]
ask turtle 1 [set shape "square"]
ask turtle 2 [set shape "chase arrow" set heading 45]
ask turtle 3 [set shape "square"]
end

to set-cacc2
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "square"]
ask turtle 1 [set shape "chase arrow" set heading 315]
ask turtle 2 [set shape "square"]
ask turtle 3 [set shape "chase arrow" set heading 135]
end

to set-cacc3
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "chase arrow" set heading 225]
ask turtle 1 [set shape "square"]
ask turtle 2 [set shape "chase arrow" set heading 45]
ask turtle 3 [set shape "square"]
end

to set-cacc4
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-horizontal-bar]
if vbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4] insert-vertical-bar]
wait rate
ask turtle 0 [set shape "square"]
ask turtle 1 [set shape "chase arrow" set heading 315]
ask turtle 2 [set shape "square"]
ask turtle 3 [set shape "chase arrow" set heading 135]
end

to insert-horizontal-bar
set hbar? 1
if vbar? = 0 [ask patches with [pcolor = white] [set pcolor gray - 4]]
set vbar? 0
ask patches with [pycor <= bar-thickness and pycor >= 0 and pxcor <= 19 and pxcor >= -19] [set pcolor white]
ask patches with [pycor >= ( - bar-thickness) and pycor <= 0 and pxcor <= 19 and pxcor >= -19] [set pcolor white]
end

to insert-vertical-bar
set vbar? 1
if hbar? = 1 [ask patches with [pcolor = white] [set pcolor gray - 4]]
set hbar? 0
ask patches with [pxcor <= bar-thickness and pxcor >= 0 and pycor <= 19 and pycor >= -19] [set pcolor white]
ask patches with [pxcor >= ( - bar-thickness) and pxcor <= 0 and pycor <= 19 and pycor >= -19] [set pcolor white]
end

to remove-bar
set hbar? 0
set vbar? 0
ask patches with [pcolor = white] [set pcolor gray - 4]
end
@#$#@#$#@
GRAPHICS-WINDOW
227
12
589
395
20
20
8.6
1
10
1
1
1
0
1
1
1
-20
20
-20
20
0
0
1
ticks

CC-WINDOW
5
409
716
504
Command Center
0

BUTTON
108
12
226
48
Go / Stop
go
T
1
T
OBSERVER
NIL
NIL
NIL
NIL

SLIDER
107
99
225
132
Rate
Rate
.1
2
0.7
.1
1
sec
HORIZONTAL

BUTTON
107
141
226
177
Insert horizontal bar
insert-horizontal-bar
NIL
1
T
OBSERVER
NIL
NIL
NIL
NIL

SLIDER
107
217
226
250
bar-thickness
bar-thickness
1
10
1
1
1
NIL
HORIZONTAL

BUTTON
107
252
226
285
Remove bar
remove-bar
NIL
1
T
OBSERVER
NIL
NIL
NIL
NIL

BUTTON
107
179
226
215
Insert vertical bar
insert-vertical-bar
NIL
1
T
OBSERVER
NIL
NIL
NIL
NIL

CHOOSER
591
168
707
213
Vary-color
Vary-color
"horizontal" "vertical" "chase clockwise" "chase counterclockwise"
0

CHOOSER
106
350
225
395
arrows
arrows
"none" "clockwise" "counterclockwise"
0

BUTTON
591
132
707
165
Go / Stop : colors
go-colors
T
1
T
OBSERVER
NIL
NIL
NIL
NIL

TEXTBOX
106
292
228
360
To insert a bar click Insert horizontal/vertical bar; thickness may be varied using the slider. To clear all bars click Remove bar.
9
0.0
1

TEXTBOX
597
348
700
394
To stop a simulation click again on the appropriate Go / Stop button.
9
0.0
1

TEXTBOX
111
51
223
97
Varying the controls below are one way to see the lights behaving differently.
9
0.0
1

TEXTBOX
597
75
701
136
Varying color with the controls below are another way to see the lights differently.
9
0.0
1

@#$#@#$#@
WHAT IS IT?
-----------
This section could give a general understanding of what the model is trying to show or explain.


HOW IT WORKS
------------
This section could explain what rules the agents use to create the overall behavior of the model.


HOW TO USE IT
-------------
This section could explain how to use the model, including a description of each of the items in the interface tab.


THINGS TO NOTICE
----------------
This section could give some ideas of things for the user to notice while running the model.


THINGS TO TRY
-------------
This section could give some ideas of things for the user to try to do (move sliders, switches, etc.) with the model.


EXTENDING THE MODEL
-------------------
This section could give some ideas of things to add or change in the procedures tab to make the model more complicated, detailed, accurate, etc.


NETLOGO FEATURES
----------------
This section could point out any especially interesting or unusual features of NetLogo that the model makes use of, particularly in the Procedures tab.  It might also point out places where workarounds were needed because of missing features.


RELATED MODELS
--------------
This section could give the names of models in the NetLogo Models Library or elsewhere which are of related interest.


CREDITS AND REFERENCES
----------------------
This section could contain a reference to the model's URL on the web if it has one, as well as any other necessary credits or references.
@#$#@#$#@
default
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airplane
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arrow
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box
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bug
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Circle -7500403 true true 110 127 80
Circle -7500403 true true 110 75 80
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Polygon -7500403 true true 150 165 89 198 75 225 75 255 105 270 135 255 150 240
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car
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Circle -7500403 true true 195 195 58

chase arrow
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circle
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Circle -7500403 true true 0 0 300

circle 2
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cow
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cylinder
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dot
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fish
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flag
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Polygon -7500403 true true 90 150 270 90 90 30
Line -7500403 true 75 135 90 135
Line -7500403 true 75 45 90 45

flower
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Circle -7500403 true true 85 132 38
Circle -7500403 true true 130 147 38
Circle -7500403 true true 192 85 38
Circle -7500403 true true 85 40 38
Circle -7500403 true true 177 40 38
Circle -7500403 true true 177 132 38
Circle -7500403 true true 70 85 38
Circle -7500403 true true 130 25 38
Circle -7500403 true true 96 51 108
Circle -16777216 true false 113 68 74
Polygon -10899396 true false 189 233 219 188 249 173 279 188 234 218
Polygon -10899396 true false 180 255 150 210 105 210 75 240 135 240

horizontal rectangle
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house
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leaf
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line
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line half
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pentagon
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person
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Polygon -7500403 true true 195 90 240 150 225 180 165 105
Polygon -7500403 true true 105 90 60 150 75 180 135 105

plant
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Polygon -7500403 true true 135 255 90 210 45 195 75 255 135 285
Polygon -7500403 true true 165 255 210 210 255 195 225 255 165 285
Polygon -7500403 true true 135 180 90 135 45 120 75 180 135 210
Polygon -7500403 true true 165 180 165 210 225 180 255 120 210 135
Polygon -7500403 true true 135 105 90 60 45 45 75 105 135 135
Polygon -7500403 true true 165 105 165 135 225 105 255 45 210 60
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square
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square lit
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square lit h1
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square lit h2
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star
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target
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Circle -7500403 true true 60 60 180
Circle -16777216 true false 90 90 120
Circle -7500403 true true 120 120 60

tree
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Circle -7500403 true true 116 41 127
Circle -7500403 true true 45 90 120
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triangle
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triangle 2
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truck
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Polygon -7500403 true true 296 193 296 150 259 134 244 104 208 104 207 194
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Polygon -16777216 true false 238 112 252 141 219 141 218 112
Circle -16777216 true false 234 174 42
Rectangle -7500403 true true 181 185 214 194
Circle -16777216 true false 144 174 42
Circle -16777216 true false 24 174 42
Circle -7500403 false true 24 174 42
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Circle -7500403 false true 234 174 42

turtle
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Polygon -10899396 true false 105 90 75 75 55 75 40 89 31 108 39 124 60 105 75 105 90 105
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wheel
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Line -7500403 true 150 285 150 15
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Circle -7500403 true true 120 120 60
Line -7500403 true 216 40 79 269
Line -7500403 true 40 84 269 221
Line -7500403 true 40 216 269 79
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x
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Polygon -7500403 true true 270 75 225 30 30 225 75 270
Polygon -7500403 true true 30 75 75 30 270 225 225 270

@#$#@#$#@
NetLogo 4.0.2
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
default
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0.0 1 1.0 0.0
0.2 0 0.0 1.0
link direction
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0
Line -7500403 true 150 150 90 180
Line -7500403 true 150 150 210 180

@#$#@#$#@