LaCuneta · October 28, 2020 13:54
diff --git a/Radius limit 5 - variable length moves.nlogo b/Radius limit 5 - variable length moves.nlogo
 turtles-own [
  pause
 ]

 to setup
  clear-all
  resize-world -100 100 -100 100 ; 1 unit = 1 mm
  ; make sure the turtles can't wrap at the patches at the edges that touch
  __change-topology false false
  set-patch-size 2
  ask patches [set pcolor black] ; outside arena | how to designate this patch color as "forbidden"?
  ask patch 0 0 [ask patches in-radius 100  [set pcolor red]] ; outer zone
  ask patch 0 0 [ask patches in-radius 85  [set pcolor gray]] ; inner zone
  create-turtles 10 [set size 15]
  ask turtles [
    set color one-of base-colors ; assign color to each turtle without repeats?
    pen-down
  ]
  reset-ticks
 end

 to go
  if ticks = 1200 [stop] ; each tick = 1 second
  move-turtles
  tick
 end

 to move-turtles
  ask turtles [
    ; `pause = 0` to keep them from spinning in place when paused
    if pause = 0 and random-float 1 > 0.05 ; 5% probability of pause per tick
    [
      ;equal chance of right or left turn
      if random-float 1 > 0.50 [right random-normal 30 10]
      if random-float 1 < 0.50 [left random-normal 30 10]
    ]

    ; to control turtle movement, we're going to use `patch-ahead` to check the patch color
    ; before moving.  if turtles only move `1` at time, they cannot "skip" past a patch, which
    ; is necessary to use this technique.

    ; Item #1 - outer zone barrier
    ; so to prevent moving into the black, all we have to do is point them somewhere else
    if patch-ahead 1 = nobody or [pcolor] of patch-ahead 1 = black [
      face-red-patch
    ]

    ; Item #3 - pause
    ; if we are paused, just decrement the pause and take no action
    ifelse pause > 0 [
      set pause (pause - 1)
    ] [
      ifelse random-float 1 > 0.05 [
        ; 95% chance to move forward

        ; Item #5 - variable length moves
        let forward-amount random-normal 10 4

        while [patch-ahead 1 != nobody and [pcolor] of patch-ahead 1 != black and forward-amount > 0] [

          ; Item #2 - inner zone stickiness
          ; if we're in the outer zone and our target patch is inner zone, don't keep moving that way
          ; if we fail our check
          if
            pcolor = red ; we're in the outer zone
            and [pcolor] of patch-ahead 1 = gray ; our target patch is grey
            and random-float 1 < 0.8 ; our random probability to bounce off
          [
            ; then we bounce off
            face-red-patch
          ]
          forward 1
          set forward-amount (forward-amount - 1)
        ]
      ] [
        ; 5% chance to pause 5 ticks
        set pause 5
      ]
    ]
  ]
 end

 to face-red-patch
  ; this kind of looping code can be dangerous, but if we're careful to use it only when we know it
  ; will terminate it should be okay.  Use Tools > Halt if you think it hit a bad state and is in an
  ; infinite loop
  while [patch-ahead 1 = nobody or [pcolor] of patch-ahead 1 != red] [
    set heading random 360
  ]
 end
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 BUTTON
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 setup\n
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 @#$#@#$#@
 ## WHAT IS IT?

 (a general understanding of what the model is trying to show or explain)

 ## HOW IT WORKS

 (what rules the agents use to create the overall behavior of the model)

 ## HOW TO USE IT

 (how to use the model, including a description of each of the items in the Interface tab)

 ## THINGS TO NOTICE

 (suggested things for the user to notice while running the model)

 ## THINGS TO TRY

 (suggested things for the user to try to do (move sliders, switches, etc.) with the model)

 ## EXTENDING THE MODEL

 (suggested things to add or change in the Code tab to make the model more complicated, detailed, accurate, etc.)

 ## NETLOGO FEATURES

 (interesting or unusual features of NetLogo that the model uses, particularly in the Code tab; or where workarounds were needed for missing features)

 ## RELATED MODELS

 (models in the NetLogo Models Library and elsewhere which are of related interest)

 ## CREDITS AND REFERENCES

 (a reference to the model's URL on the web if it has one, as well as any other necessary credits, citations, and links)
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 @#$#@#$#@
 0
 @#$#@#$#@
	turtles-own [
	pause
	]

	to setup
	clear-all
	resize-world -100 100 -100 100 ; 1 unit = 1 mm
	; make sure the turtles can't wrap at the patches at the edges that touch
	__change-topology false false
	set-patch-size 2
	ask patches [set pcolor black] ; outside arena \| how to designate this patch color as "forbidden"?
	ask patch 0 0 [ask patches in-radius 100 [set pcolor red]] ; outer zone
	ask patch 0 0 [ask patches in-radius 85 [set pcolor gray]] ; inner zone
	create-turtles 10 [set size 15]
	ask turtles [
	set color one-of base-colors ; assign color to each turtle without repeats?
	pen-down
	]
	reset-ticks
	end

	to go
	if ticks = 1200 [stop] ; each tick = 1 second
	move-turtles
	tick
	end

	to move-turtles
	ask turtles [
	; `pause = 0` to keep them from spinning in place when paused
	if pause = 0 and random-float 1 > 0.05 ; 5% probability of pause per tick
	[
	;equal chance of right or left turn
	if random-float 1 > 0.50 [right random-normal 30 10]
	if random-float 1 < 0.50 [left random-normal 30 10]
	]

	; to control turtle movement, we're going to use `patch-ahead` to check the patch color
	; before moving. if turtles only move `1` at time, they cannot "skip" past a patch, which
	; is necessary to use this technique.

	; Item #1 - outer zone barrier
	; so to prevent moving into the black, all we have to do is point them somewhere else
	if patch-ahead 1 = nobody or [pcolor] of patch-ahead 1 = black [
	face-red-patch
	]

	; Item #3 - pause
	; if we are paused, just decrement the pause and take no action
	ifelse pause > 0 [
	set pause (pause - 1)
	] [
	ifelse random-float 1 > 0.05 [
	; 95% chance to move forward

	; Item #5 - variable length moves
	let forward-amount random-normal 10 4

	while [patch-ahead 1 != nobody and [pcolor] of patch-ahead 1 != black and forward-amount > 0] [

	; Item #2 - inner zone stickiness
	; if we're in the outer zone and our target patch is inner zone, don't keep moving that way
	; if we fail our check
	if
	pcolor = red ; we're in the outer zone
	and [pcolor] of patch-ahead 1 = gray ; our target patch is grey
	and random-float 1 < 0.8 ; our random probability to bounce off
	[
	; then we bounce off
	face-red-patch
	]
	forward 1
	set forward-amount (forward-amount - 1)
	]
	] [
	; 5% chance to pause 5 ticks
	set pause 5
	]
	]
	]
	end

	to face-red-patch
	; this kind of looping code can be dangerous, but if we're careful to use it only when we know it
	; will terminate it should be okay. Use Tools > Halt if you think it hit a bad state and is in an
	; infinite loop
	while [patch-ahead 1 = nobody or [pcolor] of patch-ahead 1 != red] [
	set heading random 360
	]
	end
	@#$#@#$#@
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	@#$#@#$#@
	## WHAT IS IT?

	(a general understanding of what the model is trying to show or explain)

	## HOW IT WORKS

	(what rules the agents use to create the overall behavior of the model)

	## HOW TO USE IT

	(how to use the model, including a description of each of the items in the Interface tab)

	## THINGS TO NOTICE

	(suggested things for the user to notice while running the model)

	## THINGS TO TRY

	(suggested things for the user to try to do (move sliders, switches, etc.) with the model)

	## EXTENDING THE MODEL

	(suggested things to add or change in the Code tab to make the model more complicated, detailed, accurate, etc.)

	## NETLOGO FEATURES

	(interesting or unusual features of NetLogo that the model uses, particularly in the Code tab; or where workarounds were needed for missing features)

	## RELATED MODELS

	(models in the NetLogo Models Library and elsewhere which are of related interest)

	## CREDITS AND REFERENCES

	(a reference to the model's URL on the web if it has one, as well as any other necessary credits, citations, and links)
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	pentagon
	false
	0
	Polygon -7500403 true true 150 15 15 120 60 285 240 285 285 120

	person
	false
	0
	Circle -7500403 true true 110 5 80
	Polygon -7500403 true true 105 90 120 195 90 285 105 300 135 300 150 225 165 300 195 300 210 285 180 195 195 90
	Rectangle -7500403 true true 127 79 172 94
	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
	false
	0
	Rectangle -7500403 true true 135 90 165 300
	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
	Polygon -7500403 true true 135 90 120 45 150 15 180 45 165 90

	sheep
	false
	15
	Circle -1 true true 203 65 88
	Circle -1 true true 70 65 162
	Circle -1 true true 150 105 120
	Polygon -7500403 true false 218 120 240 165 255 165 278 120
	Circle -7500403 true false 214 72 67
	Rectangle -1 true true 164 223 179 298
	Polygon -1 true true 45 285 30 285 30 240 15 195 45 210
	Circle -1 true true 3 83 150
	Rectangle -1 true true 65 221 80 296
	Polygon -1 true true 195 285 210 285 210 240 240 210 195 210
	Polygon -7500403 true false 276 85 285 105 302 99 294 83
	Polygon -7500403 true false 219 85 210 105 193 99 201 83

	square
	false
	0
	Rectangle -7500403 true true 30 30 270 270

	square 2
	false
	0
	Rectangle -7500403 true true 30 30 270 270
	Rectangle -16777216 true false 60 60 240 240

	star
	false
	0
	Polygon -7500403 true true 151 1 185 108 298 108 207 175 242 282 151 216 59 282 94 175 3 108 116 108

	target
	false
	0
	Circle -7500403 true true 0 0 300
	Circle -16777216 true false 30 30 240
	Circle -7500403 true true 60 60 180
	Circle -16777216 true false 90 90 120
	Circle -7500403 true true 120 120 60

	tree
	false
	0
	Circle -7500403 true true 118 3 94
	Rectangle -6459832 true false 120 195 180 300
	Circle -7500403 true true 65 21 108
	Circle -7500403 true true 116 41 127
	Circle -7500403 true true 45 90 120
	Circle -7500403 true true 104 74 152

	triangle
	false
	0
	Polygon -7500403 true true 150 30 15 255 285 255

	triangle 2
	false
	0
	Polygon -7500403 true true 150 30 15 255 285 255
	Polygon -16777216 true false 151 99 225 223 75 224

	truck
	false
	0
	Rectangle -7500403 true true 4 45 195 187
	Polygon -7500403 true true 296 193 296 150 259 134 244 104 208 104 207 194
	Rectangle -1 true false 195 60 195 105
	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
	Circle -7500403 false true 144 174 42
	Circle -7500403 false true 234 174 42

	turtle
	true
	0
	Polygon -10899396 true false 215 204 240 233 246 254 228 266 215 252 193 210
	Polygon -10899396 true false 195 90 225 75 245 75 260 89 269 108 261 124 240 105 225 105 210 105
	Polygon -10899396 true false 105 90 75 75 55 75 40 89 31 108 39 124 60 105 75 105 90 105
	Polygon -10899396 true false 132 85 134 64 107 51 108 17 150 2 192 18 192 52 169 65 172 87
	Polygon -10899396 true false 85 204 60 233 54 254 72 266 85 252 107 210
	Polygon -7500403 true true 119 75 179 75 209 101 224 135 220 225 175 261 128 261 81 224 74 135 88 99

	wheel
	false
	0
	Circle -7500403 true true 3 3 294
	Circle -16777216 true false 30 30 240
	Line -7500403 true 150 285 150 15
	Line -7500403 true 15 150 285 150
	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
	Line -7500403 true 84 40 221 269

	wolf
	false
	0
	Polygon -16777216 true false 253 133 245 131 245 133
	Polygon -7500403 true true 2 194 13 197 30 191 38 193 38 205 20 226 20 257 27 265 38 266 40 260 31 253 31 230 60 206 68 198 75 209 66 228 65 243 82 261 84 268 100 267 103 261 77 239 79 231 100 207 98 196 119 201 143 202 160 195 166 210 172 213 173 238 167 251 160 248 154 265 169 264 178 247 186 240 198 260 200 271 217 271 219 262 207 258 195 230 192 198 210 184 227 164 242 144 259 145 284 151 277 141 293 140 299 134 297 127 273 119 270 105
	Polygon -7500403 true true -1 195 14 180 36 166 40 153 53 140 82 131 134 133 159 126 188 115 227 108 236 102 238 98 268 86 269 92 281 87 269 103 269 113

	x
	false
	0
	Polygon -7500403 true true 270 75 225 30 30 225 75 270
	Polygon -7500403 true true 30 75 75 30 270 225 225 270
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	NetLogo 6.1.1
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	@#$#@#$#@
	@#$#@#$#@
	@#$#@#$#@
	default
	0.0
	-0.2 0 0.0 1.0
	0.0 1 1.0 0.0
	0.2 0 0.0 1.0
	link direction
	true
	0
	Line -7500403 true 150 150 90 180
	Line -7500403 true 150 150 210 180
	@#$#@#$#@
	0
	@#$#@#$#@
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