globals
[
  num-sick   ;number of turtles that are sick
  num-heal   ;number of turtles that are heal
  run-number ;when multiple runs are recorded in the plot, this tracks what run number we're on
  delay      ;counter used to keep the model running for a little while after the last turtle gets infected
]

breed [ rabbits rabbit ]

rabbits-own
[
  infected?    ; whether turtle is sick (true/false)
  immunity?    ; whether turtle is sick (true/false)
]

to setup-clear
  clear-all
  ask patches [ set pcolor green ]                                   ;"world" area
  ask patches [ if ( pxcor > 4 and pycor > 4) [set pcolor black]]    ;hospital area
  ask patches [ if ( pxcor > 5 and pycor > 5) [set pcolor blue]]     ;hospital area
  ask patches [ if ( pxcor = 13  and pycor = 20) [set pcolor red]]   ;hospital area
  ask patches [ if ( pxcor = 13  and pycor = 19) [set pcolor red]]   ;hospital area
  ask patches [ if ( pxcor = 13  and pycor = 18) [set pcolor red]]   ;hospital area
  ask patches [ if ( pxcor = 12  and pycor = 19) [set pcolor red]]   ;hospital area
  ask patches [ if ( pxcor = 14  and pycor = 19) [set pcolor red]]   ;hospital area
  set run-number 1
  set-default-shape rabbits "rabbit"
  create-rabbits מספר-ארנבים                                          ;we start with rabbints-num that the user choosing
  [
     set color white                                                 ;let rabbits be healthy at the beginning - with coloe white
     set size 3
     set heading 90 * random 4
     set infected? false                                             ;all the rabbits are healthy at the beginning
     set immunity? false
  ]
  ask rabbits [move-to one-of patches with [ pcolor = green ]]       ;non-sick rabbit will not be inside the hospital
  reset-ticks
end

to infect
  if any? rabbits with [ color = white ]                             ;check if one of the rabbit is healthy. if so, we can make one of the helthy-white-rabbits sick. else, nothing happens.
  [
    ask one-of rabbits with [color = white] [ get-sick ]             ;pressing on the button "infect" (by the user) let randomly one of the white rabbits sick
  ]
end

to heal
  if any? rabbits with [ color = red ]                               ;check if one of the rabbit is sick. if so, we can make one of the sick-rabbits heal. else, nothing happens.
  [
     ask one-of rabbits with [color = red] [ recovery ]              ;random sick-rabbits gets heal.
  ]
end

to go
  ;in order to extend the plot for a little while
  ;after all the turtles are infected...
  if num-sick = count turtles
    [ set delay delay + 1  ]
  if delay > 50
    [ stop ]
  ;now for the main stuff
  rabbits-wander                                                     ;wander rules function
  ask turtles with [ infected? ]
    [ spread-disease ]
  set num-sick count turtles with [ infected? ]
  set num-heal count turtles with [ color = pink ]
  if num-heal = count turtles
    [ user-message "כל הארנבים הבריאו!" stop ]                         ;if all the rabbits have been to the hospital and recovered, stop the model and message the user.
  tick
end

;; controls the motion of the rabbits
to rabbits-wander
  ask rabbits
  [
    if ( color = white )                                             ;white rabbit is not sick, so he wander in green area ("world area")
    [
      move-to one-of patches with [pcolor = green]
      fd 1
    ]
    if ( color = red )                                               ;red rabbit is a sick-rabbit, so he goes directly to blue area ("the hospital")
    [
      wait 0.2 fd 1
      move-to one-of patches with [pcolor = blue]
      fd 1
    ]
    if ( color = pink )                                              ;pink rabbit is a heal-rabbit, he goes back from the blue area ("the hospital") to the green area ("the world"). pink rabbit is immune.
    [
      wait 0.2 fd 1
      move-to one-of patches with [pcolor = green]
    fd 1
    ]
  ]
end


to spread-disease ;; turtle procedure
  ask other turtles in-radius 3 [ maybe-get-sick ]                   ;if one rabbit get sick and there is another rabbit in radius 3, he get infected too
end

to maybe-get-sick ;; turtle procedure
  ;; roll the dice and maybe get sick
  if (not infected?) and (random 100 < סיכויי-הדבקה)                   ;the user controls the % of spread-disrase success
    [ get-sick ]
end

to get-sick ;; turtle procedure
  if not infected?
  [ set infected? true
    set color red ; sick rabbit will be red
  ]
end

to recovery
  if infected?
  [ set infected? false
    set immunity? true
    set color pink ; heal rabbit will be pink. pink rabbit is immune and can't get sick again
  ]
end
@#$#@#$#@
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@#$#@#$#@
## WHAT IS IT?

Disease Solo is a one-player version of the HubNet activity Disease.  It simulates the spread of a disease through a population.  One agent in the population is a person controlled by the user; the others are "androids" controlled by the computer.

## HOW IT WORKS

The user controls the blue agent via the buttons and slider on the right side of the view.  The infection is started by pressing the "infect" button.

Sick agents are indicated by a red circle.

Androids can move using a few different simple strategies. By default they simply move randomly, however, using the AVOID? and CHASE? switches you can indicate that uninfected androids should run from infected ones or infected androids should chase uninfected ones.

The person may also catch the infection.

Healthy "agents" on the same patch as sick agents have an INFECTION-CHANCE chance of becoming ill.

## HOW TO USE IT

### Buttons

SETUP/CLEAR - sets up the world and clears plots.
SETUP/KEEP - sets up the world without clearing the plot; this lets you compare results from different runs.
GO - runs the simulation.
INFECT - infects one of the androids

### Sliders

NUM-ANDROIDS - determines how many androids are created at setup
INFECTION-CHANCE - a healthy agent's chance at every time step to become sick if it is on the same patch as an infected agent

### Monitors

NUMBER SICK - the number of sick agents

### Plots

NUMBER SICK - the number of sick agents versus time

### Switches

AVOID? - when this switch is on each uninfected android checks all four directions to see if it can move to a patch that is safe from infected agents.
CHASE? - when this switch is on each infected androids checks all four directions to see if it can infect another agent.

### User controls

UP, DOWN, LEFT, and RIGHT - move the person around the world, STEP-SIZE determines how far the person moves each time one of the control buttons is pressed.

## THINGS TO NOTICE

Think about how the plot will change if you alter a parameter.  Altering the infection chance will have different effects on the plot.

## THINGS TO TRY

Do several runs of the model and record a data set for each one by using the setup/keep button. Compare the different resulting plots.

What happens to the plot as you do runs with more and more androids?

## EXTENDING THE MODEL

Currently, the agents remain sick once they're infected.  How would the shape of the plot change if agents eventually healed?  If, after healing, they were immune to the disease, or could still spread the disease, how would the dynamics be altered?

The user has a distinct advantage in this version of the model (assuming that the goal is either not to become infected, or to infect others), as the user can see the entire world and the androids can only see one patch ahead of them.  Try to even out the playing field by giving the androids a larger field of vision.

Determining the first agent who is infected may impact the way disease spreads through the population.  Try changing the target of the first infection so it can be determined by the user.

## NETLOGO FEATURES

You can use the keyboard to control the person.  To activate the keyboard shortcuts for the movement button, either hide the command center or click in the white background.

The plot uses temporary plot pens, rather than a fixed set of permanent plot pens, so you can use the setup/keep button to overlay as many runs as you want.

## RELATED MODELS

* Disease (HubNet version)
* Virus
* HIV

## CREDITS AND REFERENCES

This model is a one player version of the HubNet activity Disease.  In the HubNet version, multiple users can participate at once.

## HOW TO CITE

If you mention this model or the NetLogo software in a publication, we ask that you include the citations below.

For the model itself:

* Wilensky, U. (2005).  NetLogo Disease Solo model.  http://ccl.northwestern.edu/netlogo/models/DiseaseSolo.  Center for Connected Learning and Computer-Based Modeling, Northwestern University, Evanston, IL.

Please cite the NetLogo software as:

* Wilensky, U. (1999). NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University, Evanston, IL.

## COPYRIGHT AND LICENSE

Copyright 2005 Uri Wilensky.

![CC BY-NC-SA 3.0](http://ccl.northwestern.edu/images/creativecommons/byncsa.png)

This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License.  To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/3.0/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.

Commercial licenses are also available. To inquire about commercial licenses, please contact Uri Wilensky at uri@northwestern.edu.

<!-- 2005 -->
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Polygon -7500403 true true 30 165 13 164 -2 149 0 135 -2 119 0 105 15 75 30 75 58 104 43 119 43 134 58 134 73 134 88 104 73 44 78 14 103 -1 193 -1 223 29 208 89 208 119 238 134 253 119 240 105 238 89 240 75 255 60 270 60 283 74 300 90 298 104 298 119 300 135 285 135 285 150 268 164 238 179 208 164 208 194 238 209 253 224 268 239 268 269 238 299 178 299 148 284 103 269 58 284 43 299 58 269 103 254 148 254 193 254 163 239 118 209 88 179 73 179 58 164
Line -16777216 false 189 253 215 253
Circle -16777216 true false 102 30 30
Polygon -16777216 true false 165 105 135 105 120 120 105 105 135 75 165 75 195 105 180 120
Circle -16777216 true false 160 30 30
Circle -2674135 true false 156 171 108

heart
false
0
Circle -7500403 true true 152 19 134
Polygon -7500403 true true 150 105 240 105 270 135 150 270
Polygon -7500403 true true 150 105 60 105 30 135 150 270
Line -7500403 true 150 270 150 135
Rectangle -7500403 true true 135 90 180 135
Circle -7500403 true true 14 19 134

heart sick
false
0
Circle -7500403 true true 152 19 134
Polygon -7500403 true true 150 105 240 105 270 135 150 270
Polygon -7500403 true true 150 105 60 105 30 135 150 270
Line -7500403 true 150 270 150 135
Rectangle -7500403 true true 135 90 180 135
Circle -7500403 true true 14 19 134
Circle -2674135 true false 171 156 108

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

key
false
0
Rectangle -7500403 true true 90 120 300 150
Rectangle -7500403 true true 270 135 300 195
Rectangle -7500403 true true 195 135 225 195
Circle -7500403 true true 0 60 150
Circle -16777216 true false 30 90 90

key sick
false
0
Rectangle -7500403 true true 90 120 300 150
Rectangle -7500403 true true 270 135 300 195
Rectangle -7500403 true true 195 135 225 195
Circle -7500403 true true 0 60 150
Circle -16777216 true false 30 90 90
Circle -2674135 true false 156 171 108

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

leaf sick
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
Circle -2674135 true false 141 171 108

line
true
0
Line -7500403 true 150 0 150 300

line half
true
0
Line -7500403 true 150 0 150 150

monster
false
0
Polygon -7500403 true true 75 150 90 195 210 195 225 150 255 120 255 45 180 0 120 0 45 45 45 120
Circle -16777216 true false 165 60 60
Circle -16777216 true false 75 60 60
Polygon -7500403 true true 225 150 285 195 285 285 255 300 255 210 180 165
Polygon -7500403 true true 75 150 15 195 15 285 45 300 45 210 120 165
Polygon -7500403 true true 210 210 225 285 195 285 165 165
Polygon -7500403 true true 90 210 75 285 105 285 135 165
Rectangle -7500403 true true 135 165 165 270

monster sick
false
0
Polygon -7500403 true true 75 150 90 195 210 195 225 150 255 120 255 45 180 0 120 0 45 45 45 120
Circle -16777216 true false 165 60 60
Circle -16777216 true false 75 60 60
Polygon -7500403 true true 225 150 285 195 285 285 255 300 255 210 180 165
Polygon -7500403 true true 75 150 15 195 15 285 45 300 45 210 120 165
Polygon -7500403 true true 210 210 225 285 195 285 165 165
Polygon -7500403 true true 90 210 75 285 105 285 135 165
Rectangle -7500403 true true 135 165 165 270
Circle -2674135 true false 141 141 108

moon
false
0
Polygon -7500403 true true 175 7 83 36 25 108 27 186 79 250 134 271 205 274 281 239 207 233 152 216 113 185 104 132 110 77 132 51

moon sick
false
0
Polygon -7500403 true true 160 7 68 36 10 108 12 186 64 250 119 271 190 274 266 239 192 233 137 216 98 185 89 132 95 77 117 51
Circle -2674135 true false 171 171 108

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

person sick
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
Circle -2674135 true false 178 163 95

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

rabbit
false
0
Polygon -7500403 true true 61 150 76 180 91 195 103 214 91 240 76 255 61 270 76 270 106 255 132 209 151 210 181 210 211 240 196 255 181 255 166 247 151 255 166 270 211 270 241 255 240 210 270 225 285 165 256 135 226 105 166 90 91 105
Polygon -7500403 true true 75 164 94 104 70 82 45 89 19 104 4 149 19 164 37 162 59 153
Polygon -7500403 true true 64 98 96 87 138 26 130 15 97 36 54 86
Polygon -7500403 true true 49 89 57 47 78 4 89 20 70 88
Circle -16777216 true false 37 103 16
Line -16777216 false 44 150 104 150
Line -16777216 false 39 158 84 175
Line -16777216 false 29 159 57 195
Polygon -5825686 true false 0 150 15 165 15 150
Polygon -5825686 true false 76 90 97 47 130 32
Line -16777216 false 180 210 165 180
Line -16777216 false 165 180 180 165
Line -16777216 false 180 165 225 165
Line -16777216 false 180 210 210 240

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

star sick
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
Circle -2674135 true false 156 171 108

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

target sick
true
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
Circle -2674135 true false 163 163 95

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

wheel sick
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
Circle -2674135 true false 156 156 108

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 6.1.1
@#$#@#$#@
random-seed 3
setup-clear
infect
repeat 100 [ go ]
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
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
@#$#@#$#@