vector-borne diseases

1 collaborator

Kevin Jin (Author)

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breed [ vectors vector ] 
breed [ androids android ]

globals 
[
  pen?
  pen-color
]

turtles-own
[
  infected?
  base-shape
  healthy-color
  infected-color
  move-distance
]

vectors-own
[
  life-counter
  energy
  mature?
  victims
  nearest-victim
  gen
  last-bite
]

androids-own
[
]

to setup
  clear-all
  setup-vectors
  make-androids
  reset-ticks
  set pen? false
end 

to go
  
  move-androids
  move-vectors
  check-death
  reproduce
  if count vectors = 0 ;or ticks > 1000
  [ stop ]
   
  tick
end 

to setup-vectors
  create-vectors vector-population
  ask vectors
  [
    
    set size 1
    set base-shape "butterfly"
    set healthy-color sky
    set infected-color red
    set shape base-shape
    setxy random-xcor random-ycor
    set infected? false
    update-health
    set life-counter random 300
    ifelse life-counter >= 200
    [ set mature? true 
      set hidden? false]
    [ set mature? false
      set hidden? true ]
    set energy ((random 33) + 33) 
    set gen 1
    set last-bite 0
  ]
end 

to make-androids
  create-androids android-population
  ask androids
  [
    set size 2
    set healthy-color grey
    set infected-color yellow
    set base-shape "android"
    set shape base-shape
    setxy random-xcor random-ycor
    set infected? false
    update-health
  ]
end 

to update-health
  ifelse infected? = false
  [
    set color healthy-color
  ]
  [
    set color infected-color
  ]
end 

to initial-infect
  let healthy-vectors vectors with [ not infected? ]
  let percentage (percentage-infected * (count vectors) / 100)
  
  ask n-of percentage healthy-vectors
  [
    set infected? true
    update-health
  ]  
end 

to move-vectors
  ask vectors
  [
    set move-distance ((random 2) + 1)
    if life-counter >= 200
    [
      set mature? true
      set hidden? false 
    ]
    if mature? = true
    [
              
      hunt
      if life-counter - last-bite > 33
      [
        bite
      ]
      
    ]
    set life-counter life-counter + 1
  ]
end 

to hunt
  set victims androids in-cone vector-vision field-of-vision
  ifelse any? victims
  [
    set nearest-victim min-one-of victims [ distance myself ]
    face nearest-victim
    fd move-distance
  ]
  [
    rt random 360
    fd move-distance
  ]
  set energy energy - move-distance
end 

to bite 
  let prey one-of androids-here
  let healthy-androids androids-here with [ infected? = false ]
  
  if prey != nobody 
  [
    let android-infected? [infected?] of prey
    if android-infected? = true and infected? = false
    [set infected? true
      update-health]
    if android-infected? = false and infected? = true
    [ask prey [ set infected? true
        update-health]]
    
    set energy  energy + 150 + (random 3 + 4)
    set last-bite life-counter
    
  ]
end 

to move-androids
  ask androids
  [
    set move-distance ((random 2) + 1)
    rt random 360
    fd move-distance 
  ]
end 

to check-death
;  ifelse count vectors < 500
;  [
    
    ask vectors
    [
      if energy <= 0
      [die]
      if life-counter >= 300 and ( (random-float 100.0) + 1 <= 99 )
      [die]
      if life-counter < 300 and life-counter >= 250
      [
        if ((random-float 100.0) + 1 <= 7)
        [die]
      ]
      if life-counter < 250 and life-counter >= 200
      [
        if ((random-float 100.0) + 1 <= 3)
        [die]
      ]
      if life-counter < 200 and life-counter >= 150
      [
        if ((random-float 100.0) + 1 <= 3)
        [die]
      ]
      if life-counter < 150 and life-counter >= 100
      [
        if ((random-float 100.0) + 1 <= 1)
        [die]
      ]
      if life-counter < 100 and life-counter >= 50
      [
        if ((random-float 100.0) + 1 <= 1)
        [die]
      ]
      if life-counter < 50
      [
        if ((random-float 100.0) + 1 <= 1)
        [die]
      ]
    ]
end 

to reproduce
  ask vectors
  [
    let reproductive-chance ((random 100) + 1)
    if mature? and energy > 100 and life-counter mod 33 = 0 and reproductive-chance <= 80
    [
      
      set energy energy - 100
      hatch ((random 10) + 1)
      [
        if pen?
        [pen-up]
        
        set energy 50
        set infected? false
        update-health
        set life-counter 0
        set mature? false
        setxy random-xcor random-ycor
        set hidden? true
        set gen gen + 1
        set last-bite 0 
        if pen?
        [pen-down]
      ]
    ]
  ]
end

There is only one version of this model, created over 10 years ago by Kevin Jin.

Attached files

File	Type	Description	Last updated
vector-borne diseases.png	preview	Preview for 'vector-borne diseases'	over 10 years ago, by Kevin Jin	Download

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