language.nlogo

;; Author Steven Hicks
;; Website: http://theexceptioncatcher.com

patches-own
[
  island?
]

breed[people person]

people-own
[
  age
  germanPoints
  englishPoints
  spanishPoints
  chinesePoints
  deathAge
  tG
  tE
  tS
  tC
]


to setup 
  ca
  create-islands
  setup-people
end 


to create-islands
   ask patches
   [
     set island? false
     set pcolor blue
   ]
   
   ask n-of numberOfIslands patches
   [
     set island? true
     set pcolor green 
   ]
   
   ask patches with[island?]
   [
     let p self
     let a max list 1 round(random-normal meanIslandArea (meanIslandArea * cv-island-area))
     
     ask patches with[distance p <= a]
     [
       set island? true
       set pcolor green
     ]
   ]
end

to setup-people
  create-people numberOfInitialPeople [
    set size 1
    set color red
    set shape "person"
    set age 0
    set deathAge minLifeSpan + round(random (100 - minLifeSpan) )
    
    let language round(random 4)
    let lngPts  10
    set tE 0
    set tG 0
    set tS 0
    set tC 0
    
    set germanPoints 0
    set englishPoints 0
    set spanishPoints 0
    set chinesePoints 0
    
    if language =  0 [
       set germanPoints  lngPts
    ]
    if language = 1 [
       set englishPoints  lngPts
    ] 
    if language = 2 [
       set spanishPoints  lngPts
    ] 
    if language = 3 [
       set chinesePoints  lngPts
    ]
    reset-colors
  ]

  ask people
  [
    move-to one-of patches with[island?]
    
  ]
  
end

to go
   if count people  = 0 [ stop ]
   age-person
   reproduce
   move   
   check-death
   learn-new-language
   reset-colors
   check-for-teleport
   normalize
   do-plots
   tick
   
end

to age-person
   ask people [
      set age age + 1
   ]
end

to normalize 
  let allOutOf 10
  ask people [
      let sumOfAttr (germanPoints + englishPoints + spanishPoints + chinesePoints )
      set germanPoints (allOutOf * germanPoints / sumOfattr )
      set englishPoints (allOutOf * englishPoints / sumOfattr )
      set spanishPoints (allOutOf * spanishPoints / sumOfattr )
      set chinesePoints (allOutOf * chinesePoints / sumOfattr )
      
  ]
end

to learn-new-language
   ask people [
      let neighGer germanPoints
      let neighEng englishPoints
      let neighChi chinesePoints
      let neighSpn spanishPoints
      
      ; TODO This should be set to a temp so after all of the distances are corrected then it won't affect the neighbors
       ask people with [distance myself <= 1 ] [
           if neighGer > germanPoints and germanPoints >= nativeLevel  [
              set tG (neighGer + germanPoints) / 2
           ]
           
           if neighEng > englishPoints and englishPoints >= nativeLevel [
              set tE (neighEng + englishPoints) / 2
           ]
           
           if neighChi > chinesePoints and chinesePoints >= nativeLevel [
             set tC (neighChi + chinesePoints) / 2
           ]
           
           if neighSpn > spanishPoints and spanishPoints >= nativeLevel [
             set tS (neighSpn + spanishPoints) / 2
           ]
       ]
   ]
   
   ask people [
      if tE != 0 [ 
        set englishPoints tE
        set tE 0
      ]
      
      if tS != 0 [ 
        set spanishPoints tS
        set tS 0
      ]
      
      if tG != 0 [ 
        set germanPoints tG
        set tG 0
      ]
      
      if tC != 0 [ 
        set chinesePoints tC
        set tC 0
      ]
      
   ]
end


to reproduce 
   ask people [
      if age >= fertilityAgeMin and (random 100 < fertilityRate) and fertilityAgeMax > age
      [
         hatch 1 [
            set age 0
            set deathAge minLifeSpan + round(random (100 - minLifeSpan) )
  
           let test (list germanPoints englishPoints spanishPoints chinesePoints)
           let maxValue max test
           let lngPts  10
           let oldGerman germanPoints
           let oldEnglish englishPoints
           let oldSpanish spanishPoints 
           let oldChinese chinesePoints
           
           set germanPoints 0
           set spanishPoints 0
           set chinesePoints 0
           set englishPoints 0
              
           if oldGerman = maxValue [ set germanPoints lngPts ]
           if oldEnglish = maxValue [ set englishPoints lngPts ]
           if oldSpanish = maxValue [ set spanishPoints lngPts ]
           if oldChinese = maxValue [  set chinesePoints lngPts ]
       ]
    ]
   ]
end

to move 
   ask people [ 
      let direction random 360
      right direction
      forward 1
      ;reverse the bad move
      if [not island?] of patch-here[
         bk 1
      ]
   ]
end

to check-death
  ask people [
    if age >= deathAge [
      die
    ]
    if random 1000 < randomDeath [
      die
   ]
  ]   
end

globals [
  germanTotal
  englishTotal
  spanishTotal
  chineseTotal
  totalSum
  germanPercent
  englishPercent
  spanishPercent
  chinesePercent
]


to do-plots
  set-current-plot "People"
  set-current-plot-pen "peopleCount"
  plot count people
  
  if count people != 0 [
   ;plot the percents
   set germanTotal sum [germanPoints] of People
   set englishTotal sum [englishPoints] of People
   set spanishTotal sum [spanishPoints] of People
   set chineseTotal sum [chinesePoints] of People
   set totalSum (germanTotal + englishTotal + spanishTotal + chineseTotal)
   set germanPercent (germanTotal / totalSum)
   set englishPercent (englishTotal / totalSum)
   set spanishPercent (spanishTotal / totalSum)
   set chinesePercent (chineseTotal / totalSum)
  
   set-current-plot "Languages" 
   set-current-plot-pen "german"
   plot germanPercent
   
   set-current-plot-pen "spanish"
   plot spanishPercent
   
   set-current-plot-pen "english"
   plot englishPercent
   
   set-current-plot-pen "chinese"
   plot chinesePercent
   
  ]
end

to reset-colors 
ask people [
    let test (list germanPoints englishPoints spanishPoints chinesePoints)
     let maxValue max test
     
     if germanPoints = maxValue [
       set color yellow
     ]
         
     if englishPoints = maxValue [
       set color violet     
     ]
         
     if spanishPoints = maxValue [
       set color black
     ]
         
     if chinesePoints = maxValue [
        set color red
    ]
  ]
end

to check-for-teleport
    ask people [
    
    if random 100 <= chanceOfLanguageTeleportation [
     let language round(random 4)
     let lngPts  10
    
     set germanPoints 0
     set englishPoints 0
     set spanishPoints 0
     set chinesePoints 0
    
     if language =  0 [
        set germanPoints  lngPts
        set color yellow
     ]
     if language = 1 [
        set englishPoints  lngPts
        set color violet
     ] 
     if language = 2 [
        set spanishPoints  lngPts
        set color black
     ] 
      if language = 3 [
        set chinesePoints  lngPts
        set color red
     ]
    
     ]
    ]
end
@#$#@#$#@
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Languages
Time
Percent Spoken
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"chinese" 1.0 0 -5825686 true

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@#$#@#$#@
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
----------------
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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.
@#$#@#$#@
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@#$#@#$#@
NetLogo 4.0.4
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