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MOVIE_14._Mutual_Escalation_Spirals

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view/download model file: MOVIE_14._Mutual_Escalation_Spirals.nlogo

CODE

          ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
          ;;              AGENT_ZERO                  
          ;;      MOVIE 14 Code. Version 1.0
          ;;       Mutual Escalation Spirals                  
          ;;      
          ;;            Joshua M. Epstein                
          ;;               May 2012               
          ;;       
          ;;   Note: Deletes attack_rate slider and sets 
          ;;      as global variable: attack_rate3
          ;;
          ;;       Sliders [0,4,1,1] Seed = 2
          ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;


to use-new-seed
  let my-seed new-seed          
  output-print word "Generated seed: " my-seed  
  random-seed my-seed             
end

to use-seed-from-user
  let my-seed read-from-string user-input "Enter a random seed (an integer):"
  output-print word "User-entered seed: " my-seed  
  random-seed my-seed             
end

globals [attack_rate3]   

to setup-globals  
  set attack_rate3 10
end

directed-link-breed [red-links red-link]

links-own [weight]

turtles-own [
            affect
            learning_rate
            lambda
            delta                                
            threshold 
            event_count 
            disposition
            probability
            memory        
            ]

to setup-links

   ask turtle 0 [ create-red-link-to turtle 1]
                 ask red-link 0 1 [ 
                 set color red 
                 set weight 0.3]
   ask turtle 0 [ create-red-link-to turtle 2]
                 ask red-link 0 2 [ 
                 set color red 
                 set weight 0.3]
   ask turtle 1 [ create-red-link-to turtle 0]
                 ask red-link 1 0 [ 
                 set color red 
                 set weight 0.3]
   ask turtle 1 [ create-red-link-to turtle 2]
                 ask red-link 1 2 [ 
                 set color red 
                 set weight 0.3]
   ask turtle 2 [ create-red-link-to turtle 0]
                 ask red-link 2 0 [ 
                 set color red 
                 set weight 0.3]
   ask turtle 2 [ create-red-link-to turtle 1]
                 ask red-link 2 1 [ 
                 set color red 
                 set weight 0.3]
end


to setup
  __clear-all-and-reset-ticks
  ;use-new-seed 
  use-seed-from-user 
  setup-patches
  setup-turtles
  setup-links
  setup-globals
  setup-MyLai
 ;movie-start "out.mov"     ; Movie Code. Uncomment to make movie
 ;movie-grab-view           ; Show initial state
 ;repeat 600 
  ;  [ go 
 ;   movie-grab-view ]
 ;  movie-close
 tick
end

to setup-turtles
  set-default-shape turtles "person"
  create-turtles 3  
  ask turtle 0 [
                setxy -9 -9
                set color blue
                set affect 0.1   
                set delta 0
                set lambda 1
                set learning_rate .2
                set threshold .5
                set event_count 0
                set disposition 0
                set probability 0
                set memory []
                  repeat memory_length 
                    [set memory lput random-float 0 memory]
                ;set memory [0]                 
                ;set memory [0 0 0 0]
                ;set label who
                ]  
                        
  ask turtle 1 [                                      
                setxy  5 5 ; random-xcor random-ycor
                set color blue
                set affect 0.1      
                set delta 0
                set lambda 1
                set learning_rate .2
                set threshold .5
                set event_count 0
                set disposition 0
                set probability 0
                ;set memory [ 1 3 5 7 8]
                set memory []
                  repeat memory_length 
                    [set memory lput random-float 0 memory]
                ;show memory
               ; set label who
                ]
  ask turtle 2 [                                     
                setxy 3 9 ;random-xcor random-ycor
                set color blue
                set affect 0.1      
                set delta 0
                set lambda 1
                set learning_rate .2
                set threshold .5
                set event_count 0
                set disposition 0
                set probability 0
                set memory []
                  repeat memory_length 
                    [set memory lput random-float 0 memory]
                ;set memory [0 0]
                ;set label who
              ]
end
  
to setup-patches
  ask patches [set pcolor yellow]  
end

to update_attack_rate3  
   ifelse count patches with [pcolor = red - 3] = 0   
      [set attack_rate3 10]
      [set attack_rate3 10 + 100 * count patches with [pcolor = red - 3] / 1089] 
end
  
  to retaliate-orange 
    ask patches 
    [ 
      if pcolor = orange + 1 and any? turtles in-radius 1 and random 100 < 5
        [ask turtles in-radius 1 [die]]
    ]
  end 
        
to go
  let temp count patches with [pcolor = yellow]
  ; if temp = 0 [stop]
  move-turtles
  activate-patches
  ; update-event_count
  update-affect
  update-probability
  update-disposition
  retaliate-orange
  take-action2
  deactivate-patches 
  ;do-plots1          ; These irrelevant, and will crash when 1st Blue Agent dies.    
  ;do-plots2
  ;do-plots3
  do-plots4
  update_attack_rate3
  if count turtles = 0 [stop]
  write "attack rate"
  print attack_rate3
  tick
end

to update-event_count
ask turtles[
    if pcolor = orange + 1 [set event_count event_count + 1]  
           ]
end

to update-affect 
   ask turtles [
        if pcolor = orange + 1 
           [set affect affect + (learning_rate * (affect ^ delta) * (lambda - affect))]    
        if pcolor != orange + 1
           [set affect affect + (learning_rate * (affect ^ delta) * extinction_rate *(0 - affect))] 
               ]
end

to update-probability
 ask turtles[
 let current_probability  (count patches in-radius vision with [pcolor = orange + 1]/(count patches in-radius vision))
 set memory but-first memory                                       
 set memory lput current_probability memory                          
 set probability mean memory
 ;set probability median memory                                      
   ]
 end
 
to update-disposition
 if turtle 0 != nobody [ask turtle 0 [
     set disposition affect + probability - threshold]]      
 if turtle 1 !=  nobody [ask turtle 1 [
     set disposition affect + probability - threshold]] 
 if turtle 2 != nobody [ask turtle 2 [
     set disposition affect + probability - threshold]]              
end

to move-turtles
  ask turtles [   
    right random 360
    forward 1
    ]
    end
  
to take-action  
  ask turtles [                                            
    if disposition > 0 [ask patches in-radius action_radius [set pcolor red - 3]] 
    ]   
end

to take-action2
 ask turtles [
  if disposition > 0 [ask patches in-radius (affect * 3) [set pcolor red - 3]]  
   write "damage radius" 
   print  affect * 3]
end

to activate-patches   
 ask patches                         
  [if random 400 < attack_rate3 and pcolor = yellow [set pcolor orange + 1]] 
end

to deactivate-patches
 ask patches ; with [pxcor > -5 and pycor > -2]    
  [if random 300 < 10 and pcolor != red - 3 [set pcolor yellow]]   
end

to setup-MyLai
  ask patches with [pxcor < -5 or pycor < -2 ] 
                  [set pcolor yellow] 
end

to do-plots1
    set-current-plot "Disposition"
    set-current-plot-pen "turtle 0"
    plot [disposition] of turtle 0
    set-current-plot-pen "turtle 1"
    plot [disposition] of turtle 1
    set-current-plot-pen "turtle 2"
    plot [disposition] of turtle 2
   end
   
to do-plots2    
    set-current-plot "Probability"
    set-current-plot-pen "turtle 0"
    plot [probability] of turtle 0
    set-current-plot-pen "turtle 1"
    plot [probability] of turtle 1
    set-current-plot-pen "turtle 2"
    plot [probability] of turtle 2
   end

to do-plots3    
    set-current-plot "Affect"
    set-current-plot-pen "turtle 0"
    plot [affect] of turtle 0
    set-current-plot-pen "turtle 1"
    plot [affect] of turtle 1
    set-current-plot-pen "turtle 2"
    plot [affect] of turtle 2
   end

to do-plots4
   set-current-plot "Attack Rate"
    plot attack_rate3
   end