Standing ovation problem replica

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Jean van Haperen (Author)

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globals
[n-white
]


turtles-own[
 standing?
 intrinsic-appraisal
 neighborhood 
 standing-in-draw
]

to setup
  clear-all
  resize-world  0 (R - 1) 0 (C - 1)
  setup-turtles
  reset-ticks
end 

to setup-turtles
  set-default-shape turtles "circle" 

  ask patches [sprout 1]
  ask turtles [
    set intrinsic-appraisal random-float 1
    set standing-in-draw (random 2)
    ifelse intrinsic-appraisal > initial-standing-treshold
    [set standing? true] [set standing? false]]
  ask turtles [recolor] 
  ask turtles
  
  [set neighborhood turtles-on (neighbors with [pycor >= [pycor] of myself])]
end 

to go  
  let n-white-t-1 n-white
  set n-white count (turtles with [color = white])
  if n-white >= R * C [setup]
  if n-white-t-1 = n-white [setup]
  
  let number-black count (turtles with [color = black])
  if number-black >= R * C [setup]
  tick
  ask turtles [reconsider]
  ask turtles [recolor]
end 
  
  ; turtle commands 
  
  To recolor
  ifelse standing? [set color black][set color white]
end 

to reconsider
  let standing-number count (neighborhood with [standing?])
  let pct-neighbors-standing (standing-number / count neighborhood)
   if pct-neighbors-standing > 0.5
  [set standing? true]
   if pct-neighbors-standing < 0.5
  [set standing? false]
 
  if pct-neighbors-standing = 0.5
  [ifelse standing-in-draw = 1
  [set standing? true] [set standing? false]]
end

There is only one version of this model, created over 11 years ago by Jean van Haperen.

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