breed [men man] breed [villages village] breed [gnus gnu] men-own [nvillage steps gnu?] turtles-own [energy] patches-own [ pgrow ] globals [ village1x village1y village2x village2y randxcor randycor ener_village1 crisislist ware_factor dayware_factor vegetal_grow_rate daycrisislist deadvillage1 deadvillage2 hunting_heading1 hunting_heading2 ] to setup ca set village1x random-xcor set village1y random-ycor set village2x random-xcor set village2y random-ycor set daycrisislist ( list ) set crisislist ( list 0 ) set ware_factor 0 create_village create_men create_gnus create_terraine update-plot end to create_terraine set randxcor random-pxcor set randycor random-pycor ifelse Grass_concentration? [ ask patches [ if random 100 < vegetal_medium_grow [set pcolor 65 ] set pgrow ( 20 + 5 * vegetal_medium_grow - distancexy randxcor randycor * 5 ) if random 100 < pgrow [ set pcolor 65 ] if random 100 < vegetal_medium_grow [set pcolor 52 ] ] ] [ ask patches [ ifelse random 100 < 50 [ if random 100 < 50 [set pcolor 65 ] ] [ if random 100 < 50 [set pcolor 52 ] ] ] ] ask patches with [ pcolor = 0 ] [set pcolor 35 ] end to create_gnus create-gnus number_of_gnu [ set color 22 set size 2 setxy random-xcor random-ycor set shape "gnu" set energy 10 ] end to create_village create-villages 2 ask village 0 [ set shape "village" setxy village1x village1y set color 25 set size 2.5 ] ask village 1 [ set shape "village" setxy village2x village2y set color 45 set size 2.5 ] end to create_men create-men number_of_men * 2 [ set shape "ominide" set size 2 set energy ( birth_threshold ) ] ask men [ ifelse who - 1 <= number_of_men [ set nvillage 1 ] [ set nvillage 2 ] ] ask men [ ifelse nvillage = 1 [ setxy village1x village1y set color 25] [ setxy village2x village2y set color 45] ] end to go if ticks >= 32 * 365.25 [ reset-ticks ] regrow-vegetals move_turtles village? check-death update-plot tick end to regrow-vegetals ifelse Grass_concentration? [ set vegetal_grow_rate ( vegetal_medium_grow - ( vegetal_medium_grow * 0.8 ) * sin ( abs ( ( ( ticks - 16 * 365.25 )/ ( 365 * 16 ) * 180 ) - 180 ) ) + random-normal 0 0.1 ) ask patches [ set pgrow ( 20 + 5 * vegetal_grow_rate - distancexy randxcor randycor * 5 ) if random 100 < pgrow [ set pcolor 65 ] if random 100 < vegetal_grow_rate [set pcolor 52 ] if random 100 < vegetal_grow_rate * 0.5 [set pcolor 65 ] ] ] [ ask patches [ ifelse random 100 < 50 [ if random 100 < vegetal_medium_grow * 4 [set pcolor 65 ] ] [ if random 100 < vegetal_medium_grow * 3 [set pcolor 52 ] ] ] ] end to eat_grass ask gnus [ if pcolor = 65 [ set pcolor 35 set energy (energy + 4) ] ] end to move_turtles ask gnus [ ifelse pcolor = 65 [ eat_grass right random 360 ; mangia dopo aver camminato , quindi quando controlla se si deve muovere di più la condizione è sempre vera se non è ricresciuta l'erba forward 0.5 set energy energy - 1 ] [ right random 360 forward 1.5 set energy energy - 1 ] ] ask men [ ifelse steps < distance? [ ifelse count gnus in-radius 4 != 0 [ face min-one-of gnus [distance myself ] forward 0.5 ] [ right random 30 left random 30 forward 0.5 ] ] ; il passo è di 0.5 altrimenti gli uomini si bloccano e non riescono mai a raggiungere con precisione la patch del villaggio [ set heading towards village ( nvillage - 1 ) ; i villagi sono 0 e 1, il villaggio 2 non esiste forward 0.5 ] set energy energy - 1 set steps steps + 1 hunting-gnus collect-berries ] reproduce_gnus end to check-death ask gnus [ if energy <= 0 [die] ] ask men [ if energy <= 0 [ ifelse nvillage = 1 [ set deadvillage1 deadvillage1 + 1 die ] [ set deadvillage2 deadvillage2 + 1 die] ] ] end to hunting-gnus let prey one-of gnus-here if prey != nobody [ ask prey [ die ] if energy < 150 [ ; 150 è il tetto max che un omino si può portare in giro sulle spalle set energy energy + 20 set steps steps + distance? set gnu? 1] ] end to collect-berries ask men [ if pcolor = 52 and energy < 150 [ set pcolor 35 set energy (energy + 5)] ] end to reproduce_gnus ifelse Grass_concentration? [ ask gnus [ if energy >= 60 [ set energy (energy / 2) hatch 1 [ rt random-float 360 fd 1 ] ] ] ] [ ask gnus [ if energy >= 40 [ set energy (energy / 2) hatch 1 [ rt random-float 360 fd 1 ] ] ] ] end to village? ask men with [ nvillage = 1 ] [ ask village ( nvillage - 1 ) [ set ener_village1 energy ] let erre ener_village1 let cappa one-of villages-here if cappa = village 0 [ if gnu? = 1 [ set hunting_heading1 heading - 180 ] set gnu? 0 set steps 0 ifelse Capitalistic_world? [ let ics ( energy - ( birth_threshold / 2 ) ) let acca ( energy - ( birth_threshold / 2 ) - capitalistic_factor ) ; qui si definisce il livello sopra il quale posa energia ifelse acca > 0 [ set energy energy - acca ask village ( nvillage - 1 ) [ set energy energy + acca set ener_village1 energy ] ] [ if ics < 0 [ if ener_village1 + ics > 0 [ ; acca in questo caso è negativo set energy energy - ics ask village ( nvillage - 1 ) [ set energy energy + ics set ener_village1 energy ] ] ] ] if ener_village1 > birth_threshold / 2 [ hatch 1 [ set energy birth_threshold / 2 ] ask village ( nvillage - 1 ) [ set energy energy - birth_threshold / 2 ] ] set heading hunting_heading1 * random-normal 1 0.01 ] [ let acca ( energy - distance? * 2 ) ifelse acca > 0 [ set energy energy - acca ask village ( nvillage - 1 ) [ set energy energy + acca ; ogni volta che è sulla patch mette energia e facendo mezzo passo alcune volte sta per due turni sulla patch del villaggio set ener_village1 energy ] ] [ if ener_village1 + acca > 0 [ ; acca in questi caso è negativo set energy energy - acca ; ener_village1 messo perchè non riuscivo a definire una var locale per a cui assegnare l'energia del villaggio 1 ask village ( nvillage - 1 ) [ set energy energy + acca set ener_village1 energy ] ] ] if ener_village1 > distance? * 2 + distance? * 2 * ware_factor [ hatch 1 ask village ( nvillage - 1 ) [ set energy energy - distance? * 2 set ener_village1 energy ] ] ifelse erre > ener_village1 [ set daycrisislist fput 1 daycrisislist ] [ set daycrisislist fput 0 daycrisislist ] set heading hunting_heading1 * random-normal 1 0.01 ] ] if length daycrisislist >= count men with [ nvillage = 1 ] [ set dayware_factor ( reduce [?1 + ?2] daycrisislist ) set crisislist fput dayware_factor crisislist set daycrisislist remove 0 daycrisislist set daycrisislist remove 1 daycrisislist ] set ware_factor ( ( reduce [?1 + ?2] crisislist ) / length crisislist ) ] ask men with [ nvillage = 2 ] [ let cappa one-of villages-here if cappa = village 1 [ if gnu? = 1 [ set hunting_heading2 heading - 180 ] set gnu? 0 set steps 0 if energy > birth_threshold [ ; aggiunto lo slider per determinare il livello di energia necessario per poter riprodursi set energy energy / 2 hatch 1 ] set heading hunting_heading2 * random-normal 1 0.001] ] end to update-plot set-current-plot "populations" set-current-plot-pen "men" plot count men set-current-plot-pen "gnus" plot count gnus set-current-plot-pen "grass" plot count patches with [pcolor = 65] set-current-plot-pen "bushes" plot count patches with [pcolor = 52] set-current-plot "men populations" set-current-plot-pen "orange" plot count men with [nvillage = 1] set-current-plot-pen "yellow" plot count men with [nvillage = 2] set-current-plot "vegetal grow rate" set-current-plot-pen "default" plot vegetal_grow_rate set-current-plot-pen "day" plot dayware_factor set-current-plot-pen "total" plot ware_factor set-current-plot "energy" set-current-plot-pen "ener1" plot sum [ energy ] of men with [ nvillage = 1 ] + ener_village1 set-current-plot-pen "ener2" plot sum [ energy ] of men with [ nvillage = 2 ] end @#$#@#$#@ GRAPHICS-WINDOW 369 10 851 513 16 16 14.303030303030303 1 10 1 1 1 0 1 1 1 -16 16 -16 16 0 0 1 ticks CC-WINDOW 5 684 860 779 Command Center 0 BUTTON 10 10 167 43 setup world setup NIL 1 T OBSERVER NIL NIL NIL NIL BUTTON 92 48 166 81 NIL go T 1 T OBSERVER NIL NIL NIL NIL BUTTON 12 48 84 81 NIL go NIL 1 T OBSERVER NIL NIL NIL NIL SLIDER 183 10 355 43 number_of_men number_of_men 0 20 5 1 1 NIL HORIZONTAL SLIDER 183 49 355 82 number_of_gnu number_of_gnu 0 100 25 1 1 NIL HORIZONTAL SLIDER 182 89 354 122 vegetal_medium_grow vegetal_medium_grow 0 10 5 1 1 NIL HORIZONTAL PLOT 9 206 354 357 populations NIL NIL 0.0 10.0 0.0 10.0 true true PENS "men" 1.0 0 -2064490 true "gnus" 1.0 0 -6459832 true "grass" 1.0 0 -10899396 true "bushes" 1.0 0 -13345367 true PLOT 12 364 355 514 men populations NIL NIL 0.0 10.0 0.0 10.0 true true PENS "yellow" 1.0 0 -7171555 true "orange" 1.0 0 -955883 true SLIDER 182 128 354 161 distance? distance? 0 40 32 1 1 NIL HORIZONTAL MONITOR 700 522 803 567 Village 1 warehouse ener_village1 17 1 11 MONITOR 702 572 802 617 Village 1 deaths deadvillage1 17 1 11 MONITOR 702 622 802 667 Village 2 deaths deadvillage2 17 1 11 PLOT 11 520 357 670 vegetal grow rate NIL NIL 0.0 10.0 0.0 10.0 true false PENS "default" 1.0 0 -16777216 true "day" 1.0 0 -8630108 true "total" 1.0 0 -11221820 true PLOT 370 519 686 669 energy NIL NIL 0.0 10.0 0.0 10.0 true false PENS "ener1" 1.0 0 -955883 true "ener2" 1.0 0 -1184463 true SLIDER 182 167 354 200 birth_threshold birth_threshold 0 100 55 5 1 NIL HORIZONTAL SWITCH 10 128 169 161 Capitalistic_world? Capitalistic_world? 1 1 -1000 SLIDER 10 168 169 201 capitalistic_factor capitalistic_factor 0 100 10 1 1 NIL HORIZONTAL SWITCH 10 89 169 122 Grass_concentration? Grass_concentration? 0 1 -1000 @#$#@#$#@ WHAT IS IT? ----------- The model is about the observation of two prehistoric populations that collect food in their two villages. The main issue is to show the role played by the warehouse and the skill to preserve food that just one of the two villages has. HOW IT WORKS ------------ The model has been builted using a combination of NetLogo turtles and patches. There are three agentsets: men, gnus and villages. Men can eat gnus and barries to reproduce themselves; gnus can just eat grass to reproduce themselves; villages are different because one of them own the warehouse while other don't. Patches can represent grass, berries or sand. HOW TO USE IT ------------- The model starts when the "setup" button is pressed. In this way the user creates the prehistoric world with the agentsets and patches above-cited. Next step is to press the "go" button. So the user can see men that go around to hunt gnus or collect berries, gnus who move to eat grass and patches that change color continuously. If you want to change the number of men or the number of gnus, move the NUMBER_OF_MEN or the NUMBER_OF_GNUS slider before pressing "setup". The DISTANCE? slider sets the maximum ditance that every man can reach. The VEGETAL_MEDIUM_GROW slider sets the growth speed of grass and barries in the world. The CAPITALISTIC_FACTOR? slider sets the daily level of energy that every man of village 1 has to leave in the warehouse. The BIRTH_THRESHOLD slider sets the energy that every man has to own to reproduce himself. If you want to see the differences between a capitalistic world and a communist world you can operate the on-off CAPITALISTIC_WORLD? switch. Finally you can turn on the GRASS_CONCENTRATION? switch if you like to show that the grass concentrates in a particular area of the world. THINGS TO NOTICE ---------------- It's interesting to see the dinamics of the two populations along several years.The important thing to underline is that the orange population you can see on the graph is the one with warehouse so, in the capitalistic world, you should notice that this population grows more than the yellow one. It' also interesting to notice the different level of energy that the populations can reach and also in this case the orange population should have more energy than the yellow one due to the presence of the warehouse in its village. The third main thing one has to notice is the number of deaths in each village. These are the three more interesting aspects one has to see to notice the impact of the warehouse on the model. THINGS TO TRY ------------- The first thing one can do is to change the nature of the world. This mean that it's interesting to notice the different dinamics of the populations in the capitalistic and communist world. It's easy to pass to one world to the other: the user has just to push the switch called CAPITALISTIC_WORLD?. Another useful experiment is about to move the slider of the maximum distance that men can reach in the model. The distance is important because affects the number of gnus that a man can reach and hunt, moreover affects the energy and the populations of the villages. EXTENDING THE MODEL ------------------- We try to include in the model two periods of year, one in which the crop is good and one period of crisis. This is an attempt to create a more realistic world but it isn't complete and a little rough in the way it has been builted. So the model can be corroborated by the substitution of these two periods with seasons to get it more realistic. RELATED MODELS -------------- The models we referred to are some predations models one can find into the NetLogo models library as indicated in the credits and references space. CREDITS AND REFERENCES ---------------------- In developing our model we use some models in the NetLogo models library. In particular we used Ants and Wolf sheet predation as our two main models. They both were useful to understand the ways agents interact. This model was developed by Nicola Giuliano and Alessandro Graniero, students of the University of Turin, Faculty of Economics. See http://web.econ.unito.it/terna/tesine for other related student's project works. @#$#@#$#@ default true 0 Polygon -7500403 true true 150 5 40 250 150 205 260 250 airplane true 0 Polygon -7500403 true true 150 0 135 15 120 60 120 105 15 165 15 195 120 180 135 240 105 270 120 285 150 270 180 285 210 270 165 240 180 180 285 195 285 165 180 105 180 60 165 15 arrow true 0 Polygon -7500403 true true 150 0 0 150 105 150 105 293 195 293 195 150 300 150 box false 0 Polygon -7500403 true true 150 285 285 225 285 75 150 135 Polygon -7500403 true true 150 135 15 75 150 15 285 75 Polygon -7500403 true true 15 75 15 225 150 285 150 135 Line -16777216 false 150 285 150 135 Line -16777216 false 150 135 15 75 Line -16777216 false 150 135 285 75 bug true 0 Circle -7500403 true true 96 182 108 Circle -7500403 true true 110 127 80 Circle -7500403 true true 110 75 80 Line -7500403 true 150 100 80 30 Line -7500403 true 150 100 220 30 butterfly true 0 Polygon -7500403 true true 150 165 209 199 225 225 225 255 195 270 165 255 150 240 Polygon -7500403 true true 150 165 89 198 75 225 75 255 105 270 135 255 150 240 Polygon -7500403 true true 139 148 100 105 55 90 25 90 10 105 10 135 25 180 40 195 85 194 139 163 Polygon -7500403 true true 162 150 200 105 245 90 275 90 290 105 290 135 275 180 260 195 215 195 162 165 Polygon -16777216 true false 150 255 135 225 120 150 135 120 150 105 165 120 180 150 165 225 Circle -16777216 true false 135 90 30 Line -16777216 false 150 105 195 60 Line -16777216 false 150 105 105 60 car false 0 Polygon -7500403 true true 300 180 279 164 261 144 240 135 226 132 213 106 203 84 185 63 159 50 135 50 75 60 0 150 0 165 0 225 300 225 300 180 Circle -16777216 true false 180 180 90 Circle -16777216 true false 30 180 90 Polygon -16777216 true false 162 80 132 78 134 135 209 135 194 105 189 96 180 89 Circle -7500403 true true 47 195 58 Circle -7500403 true true 195 195 58 circle false 0 Circle -7500403 true true 0 0 300 circle 2 false 0 Circle -7500403 true true 0 0 300 Circle -16777216 true false 30 30 240 cow false 0 Polygon -7500403 true true 200 193 197 249 179 249 177 196 166 187 140 189 93 191 78 179 72 211 49 209 48 181 37 149 25 120 25 89 45 72 103 84 179 75 198 76 252 64 272 81 293 103 285 121 255 121 242 118 224 167 Polygon -7500403 true true 73 210 86 251 62 249 48 208 Polygon -7500403 true true 25 114 16 195 9 204 23 213 25 200 39 123 cylinder false 0 Circle -7500403 true true 0 0 300 dot false 0 Circle -7500403 true true 90 90 120 face happy false 0 Circle -7500403 true true 8 8 285 Circle -16777216 true false 60 75 60 Circle -16777216 true false 180 75 60 Polygon -16777216 true false 150 255 90 239 62 213 47 191 67 179 90 203 109 218 150 225 192 218 210 203 227 181 251 194 236 217 212 240 face neutral false 0 Circle -7500403 true true 8 7 285 Circle -16777216 true false 60 75 60 Circle -16777216 true false 180 75 60 Rectangle -16777216 true false 60 195 240 225 face sad false 0 Circle -7500403 true true 8 8 285 Circle -16777216 true false 60 75 60 Circle -16777216 true false 180 75 60 Polygon -16777216 true false 150 168 90 184 62 210 47 232 67 244 90 220 109 205 150 198 192 205 210 220 227 242 251 229 236 206 212 183 fish false 0 Polygon -1 true false 44 131 21 87 15 86 0 120 15 150 0 180 13 214 20 212 45 166 Polygon -1 true false 135 195 119 235 95 218 76 210 46 204 60 165 Polygon -1 true false 75 45 83 77 71 103 86 114 166 78 135 60 Polygon -7500403 true true 30 136 151 77 226 81 280 119 292 146 292 160 287 170 270 195 195 210 151 212 30 166 Circle -16777216 true false 215 106 30 flag false 0 Rectangle -7500403 true true 60 15 75 300 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 false 0 Polygon -10899396 true false 135 120 165 165 180 210 180 240 150 300 165 300 195 240 195 195 165 135 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 gnu false 0 Polygon -7500403 true true 200 193 197 249 179 249 177 196 180 165 150 165 105 180 75 150 72 211 49 209 48 181 37 149 25 120 30 105 45 90 103 84 165 75 195 75 252 64 272 81 285 120 270 135 255 121 240 120 210 165 Polygon -7500403 true true 73 210 86 251 62 249 48 208 Polygon -7500403 true true 25 114 16 195 9 204 23 213 25 200 39 123 Polygon -7500403 true true 255 90 270 60 270 45 255 30 240 45 255 45 255 60 240 75 255 75 house false 0 Rectangle -7500403 true true 45 120 255 285 Rectangle -16777216 true false 120 210 180 285 Polygon -7500403 true true 15 120 150 15 285 120 Line -16777216 false 30 120 270 120 leaf false 0 Polygon -7500403 true true 150 210 135 195 120 210 60 210 30 195 60 180 60 165 15 135 30 120 15 105 40 104 45 90 60 90 90 105 105 120 120 120 105 60 120 60 135 30 150 15 165 30 180 60 195 60 180 120 195 120 210 105 240 90 255 90 263 104 285 105 270 120 285 135 240 165 240 180 270 195 240 210 180 210 165 195 Polygon -7500403 true true 135 195 135 240 120 255 105 255 105 285 135 285 165 240 165 195 line true 0 Line -7500403 true 150 0 150 300 line half true 0 Line -7500403 true 150 0 150 150 ominide false 0 Circle -2064490 true false 110 5 80 Polygon -2064490 true false 105 90 120 195 90 285 105 300 135 300 150 225 165 300 195 300 210 285 180 195 195 90 Rectangle -2064490 true false 127 79 172 94 Polygon -2064490 true false 195 90 240 150 225 180 165 105 Polygon -2064490 true false 105 90 60 150 75 180 135 105 Line -7500403 true 60 135 60 60 Line -7500403 true 60 270 60 15 Rectangle -7500403 true true 60 15 45 285 Rectangle -7500403 true true 45 30 60 285 Polygon -7500403 false true 60 15 45 30 60 60 Polygon -7500403 false true 60 30 45 45 Rectangle -7500403 true true 45 30 60 30 Polygon -7500403 true true 60 15 45 30 60 30 60 15 45 45 Polygon -7500403 true true 180 165 120 165 120 195 180 195 180 180 180 195 120 195 120 165 180 165 Polygon -2674135 true false 180 180 120 180 120 195 150 225 180 195 180 180 Polygon -2674135 true false 195 90 180 180 165 180 180 90 195 90 Polygon -6459832 true false 195 90 180 90 165 180 120 180 120 195 150 225 180 195 180 180 195 90 180 90 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 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 village false 0 Polygon -7500403 true true 285 120 150 15 15 120 Polygon -6459832 true false 150 15 135 120 105 120 285 120 150 15 15 120 135 120 Rectangle -7500403 true true 45 120 255 285 Rectangle -16777216 true false 90 165 195 285 Line -16777216 false 270 120 30 120 Line -16777216 false 150 15 45 120 Line -16777216 false 150 15 75 120 Line -16777216 false 150 15 105 120 Line -16777216 false 150 15 135 120 Line -16777216 false 150 15 165 120 Line -16777216 false 150 15 195 120 Line -16777216 false 150 15 225 120 Line -16777216 false 150 15 255 120 Polygon -13840069 true false 60 285 75 240 60 255 60 240 45 255 60 270 45 225 30 270 45 270 30 240 15 270 30 270 15 240 0 255 15 285 60 285 Polygon -13840069 true false 45 255 60 270 45 255 45 270 15 270 15 255 30 255 45 255 Polygon -13840069 true false 60 255 60 270 45 255 45 240 Polygon -6459832 true false 270 285 270 225 255 225 255 285 270 285 Line -16777216 false 270 270 255 270 Line -16777216 false 270 255 255 255 Line -16777216 false 270 240 255 240 Line -13840069 false 270 225 255 225 Polygon -13840069 true false 270 225 300 180 270 195 270 180 285 195 285 165 255 195 255 180 270 195 255 165 240 180 225 180 255 225 Polygon -13840069 true false 285 180 285 195 255 195 255 180 270 195 Polygon -13840069 true false 285 165 255 195 270 225 285 180 285 165 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 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 @#$#@#$#@ NetLogo 4.0.4 @#$#@#$#@ @#$#@#$#@ @#$#@#$#@ @#$#@#$#@ @#$#@#$#@ 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 @#$#@#$#@