evacuation.nlogo

;author: Carlo Longhi
;email: carlo.longhi@studio.unibo.it

globals [
  payoff-matrix
  num-players
  num-strategies
  strategy-names
]

patches-own[
  strategy
  payoff
  my-neighbors
]

to setup
  clear-all
  reset-ticks
  setup-names
  setup-payoffs
  setup-players
  setup-graph
  update-graph
  ask patches [update-color]
end

; function for the names in the graph legend
to setup-names
  set strategy-names (list "calm" "impulsive" "supervisor" "retaliator")
  if (length (read-from-string initial-distribution)) = 4[
    set strategy-names (fix-order strategy-names)
  ]
end

; read payoffs matrix
to setup-payoffs
  ifelse use-retaliator [
    set payoff-matrix read-from-string payoffs-with-retaliator
  ]
  [
    set payoff-matrix read-from-string payoffs-no-retaliator
  ]
  set num-strategies ((length payoff-matrix) + 1)
end

to setup-players
  let init-distribution read-from-string initial-distribution

  ask patches [set strategy false]

  if order-supervisor [
    let num-spaces (supervisor-space + 1)
    ask patches[
      if (((pxcor mod num-spaces) = 0) and ((pycor mod num-spaces) = 0) and (strategy = false))[
        set payoff 0
        set strategy (num-strategies - 1)
        set my-neighbors neighbors
      ]
    ]
  ]

  if order-supervisor [
    set init-distribution (but-last init-distribution)
  ]

  if sum init-distribution != (count (patches with [strategy = false]))[
   user-message (word "The sum of the agents distribution is " sum init-distribution
      " but has to be " count (patches with [strategy = false]))
  ]

  let i 0
  foreach init-distribution [ j ->
    ask n-of j (patches with [strategy = false])[
      set payoff 0
      set strategy i
      set my-neighbors neighbors
    ]
    set i (i + 1)
  ]

  set num-players count patches
end

to setup-graph
  set-current-plot "Strategy Distribution"
  let color-list (range num-strategies)
  set color-list (fix-order color-list)
  foreach (range num-strategies) [ i ->
    create-temporary-plot-pen (item i strategy-names)
    set-plot-pen-mode 1
    set-plot-pen-color 25 + 30 * (item i color-list)
  ]
end

to-report fix-order [l]
  let last-el (last l)
  let new-l (but-last l)
  set new-l (insert-item 2 new-l last-el)
  report new-l
end

to update-graph

  let strategy-numbers (range num-strategies)
  let strategy-frequencies map [ n ->
    count patches with [strategy = n] / num-players] strategy-numbers

  set-plot-y-range 0 1

  set-current-plot "Strategy Distribution"
  let bar 1
  foreach strategy-numbers [ n ->
    set-current-plot-pen (item n strategy-names)
    plotxy ticks bar
    set bar (bar - (item n strategy-frequencies))
  ]
  set-plot-y-range 0 1
end

to update-color
  ifelse (strategy = 0) or (strategy = 1)[
    set pcolor 25 + 30 * strategy
  ]
  [
    ifelse strategy = (num-strategies - 1)[
      set pcolor 85
    ]
    [
      set pcolor 115
    ]
  ]
end

to go
  ask (patches with [strategy != (num-strategies - 1)]) [play]
  ask (patches with [strategy != (num-strategies - 1)])[
    if (random-float 1 < prob-revision) [update-strategy]
  ]
  tick
  update-graph
  ask patches [update-color]
end

to play
  let mate false
  ifelse local-game[
    set mate one-of other my-neighbors
  ]
  [
    set mate one-of other patches
  ]
  set payoff item ([strategy] of mate) (item strategy payoff-matrix)
end

to update-strategy
  ifelse (random-float 1 < noise) [
    set strategy random (num-strategies - 1)
  ]
  [
    let observed-player false
    ifelse local-game [
      set observed-player (one-of other (my-neighbors with  [strategy != (num-strategies - 1)]))
    ]
    [
      set observed-player one-of other (patches with [strategy != (num-strategies - 1)])
    ]
    if observed-player = NOBODY [
      set observed-player one-of other (patches with [strategy != (num-strategies - 1)])
    ]
    if ([payoff] of observed-player) > payoff [
      set strategy ([strategy] of observed-player)
    ]
  ]
end
@#$#@#$#@
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ticks
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setup
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go once
go
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PLOT
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Strategy Distribution
Time
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"" ""
PENS

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order-supervisor
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SLIDER
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SWITCH
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local-game
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TEXTBOX
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To fix the position of supervisors, set this switch to on.\nsupervisor-space represents the number of spaces between each supervisor
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TEXTBOX
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To make the players play only with their neighbors use this switch:
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TEXTBOX
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Probability of revision and revision nosie:
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TEXTBOX
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Intial distribution of the population [calm, impulsive, (retaliators), supervisors]:
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INPUTBOX
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payoffs-with-retaliator
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SWITCH
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use-retaliator
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TEXTBOX
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To use the retaliator in the simulation turn on this switch:
12
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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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@#$#@#$#@
NetLogo 6.2.1
@#$#@#$#@
@#$#@#$#@
@#$#@#$#@
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@#$#@#$#@
default
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link direction
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@#$#@#$#@
0
@#$#@#$#@