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MOVIES_5and6._Fight_vs_Flight

powered by NetLogo

view/download model file: MOVIES_5and6._Fight_vs_Flight.nlogo

CODE

          
          ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
          ;;              AGENT_ZERO
          ;;     MOVIES 5 and 6 Code. Version 1.0
          ;;          Fight vs. Flight
          ;;
          ;;         Joshua M. Epstein               
          ;;           February 2010 
          ;;       Revised September 2012               
          ;;            NetLogo 5.0 
          ;;    Sliders [30,0,4,2,1, Seed 8] 
          ;;
          ;;  Note: Fight and Flight are Switches 
          ;;  on the User Inteface      
          ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;  
                    
         

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[                    
  inactive-color
  active-color
  destroyed-color 
  link-color
  deactivation-rate            
  maximum-stopping-time
]

to setup-globals
  set inactive-color yellow  
  set active-color orange + 1
  set destroyed-color red - 3
  set deactivation-rate 8
  set link-color red
  set maximum-stopping-time 50000
  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 link-color
                 set weight 0.1]
   ask turtle 0 [ create-red-link-to turtle 2]
                 ask red-link 0 2 [ 
                 set color link-color
                 set weight 0.1]
   ask turtle 1 [ create-red-link-to turtle 0]
                 ask red-link 1 0 [ 
                 set color link-color
                 set weight 0.1]
   ask turtle 1 [ create-red-link-to turtle 2]
                 ask red-link 1 2 [ 
                 set color link-color
                 set weight 0.1]
   ask turtle 2 [ create-red-link-to turtle 0]
                 ask red-link 2 0 [ 
                 set color link-color
                 set weight 0.1]
   ask turtle 2 [ create-red-link-to turtle 1]
                 ask red-link 2 1 [ 
                 set color link-color 
                 set weight 0.1]
end

to setup
  __clear-all-and-reset-ticks
  ;use-new-seed 
  use-seed-from-user 
  setup-globals
  setup-patches
  setup-turtles
  setup-links
  ; setup-movie  ; Uncomment to make movie.
 tick
end

to setup-movie
   movie-start "out.mov"  
   movie-grab-view 
   repeat 750 
    [ go 
    movie-grab-view ]
   movie-close
end

to setup-turtles
  set-default-shape turtles "person"
  create-turtles 3  
  ask turtle 0 [
                setxy 11 8       
                set color blue
                set affect 0.001 
                set delta 1
                set lambda 1
                set learning_rate .05
                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 
                set color blue
                set affect 0.001
                set delta .5
                set lambda 1
                set learning_rate .03
                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 12 
                set color blue
                set affect 0.001
                set delta .1
                set lambda 1
                set learning_rate .09
                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 inactive-color + random 2]  
end
  
to update-event_count
ask turtles[
    if pcolor = active-color [set event_count event_count + 1]  
           ]
end

to update-affect 
   ask turtles [
        if pcolor = active-color 
           [set affect affect + (learning_rate * (affect ^ delta) * (lambda - affect))]    
        if pcolor != active-color 
           [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 = active-color]/(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   
 ask turtle 0 [
   set disposition affect + probability + [weight] of red-link 1 0 * ([affect] of turtle 1 + [probability] of turtle 1) + 
                                          [weight] of red-link 2 0 * ([affect] of turtle 2 + [probability] of turtle 2) - threshold]
ask turtle 1 [
   set disposition affect + probability + [weight] of red-link 0 1 * ([affect] of turtle 0 + [probability] of turtle 0) +
                                          [weight] of red-link 2 1 * ([affect] of turtle 2 + [probability] of turtle 2) - threshold]
ask turtle 2 [
   set disposition affect + probability + [weight] of red-link 0 2 * ([affect] of turtle 0 + [probability] of turtle 0) +
                                          [weight] of red-link 1 2 * ([affect] of turtle 1 + [probability] of turtle 1) - threshold] 
end

to move-turtles                   ; Never called in 'fight vs flight.' Movement handled in take-action method
  ask turtles with [who != 0] [
    right random 360
    forward 1
    ]
    end

to take-action
   ask turtles 
   [
     if disposition > 0 [
       ifelse fight_or_flight?
         [ask patches in-radius action_radius [set pcolor destroyed-color]] ; Fight
         [facexy -12 -12 forward .1]                                        ; Flight
      ]
   ]
     end
     
to activate-patches  
 ask patches with [pxcor > -9 and pycor > -9]
      [if random 1000 < attack_rate and pcolor != destroyed-color [set pcolor active-color]] 
end

to deactivate-patches
 ask patches with [pxcor > -9 and pycor > -9]    
  [if random 100 < deactivation-rate and pcolor != destroyed-color [set pcolor inactive-color + random 2]]
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 go   
  if ticks >= maximum-stopping-time [stop] 
  activate-patches
  update-event_count
  update-affect
  update-probability
  update-disposition
  take-action
  deactivate-patches 
  do-plots1
  do-plots2
  do-plots3
  tick
end