cockroach.nlogo

globals
[
  cockroaches-stride ;; how much a cockroach moves in each simulation step
  cockroach-size    ;; the size of the shape for a cockroach
  trap-size      ;; the size of the shape for a trap
  poison-size    ;; the size of the shape for a poison bait
  cockroach-reproduce-age ;; age at which cockroach reproduces
  cockroaches-born ;; number of cockroaches born
  cockroaches-died ;; number of cockroaches that died
  max-cockroaches-age
  amount-of-food-cockroaches-eat
  min-reproduce-energy-cockroaches ;; how much energy, at minimum, cockroach needs to reproduce
  max-cockroaches-offspring ;; max offspring a cockroach can have

  max-object-energy ;; the maximum amount of energy a object in a patch can accumulate
  sprout-delay-time ;; number of ticks before trash starts regrowing
  trash-level ;; a measure of the amount of trash currently in the ecosystem
  trash-growth-rate ;; the amount of energy units a object gains every tick from regrowth
  ;immunity-duration ;; how many weeks immunity lasts

  cockroaches-color
  trash-color
  traps-color
  dirt-color
  poison-color
]

breed [ cockroaches cockroach ]
breed [ traps trap ]
breed [ poisons poison ]
breed [ disease-markers a-disease-marker ] ;; visual cue, red "X" that cockroach has a disease and will die
breed [ embers ember ] ;; visual cue that a trash patch is on fire

turtles-own [ energy current-age max-age female? #-offspring]

cockroaches-own
  [ sick?                ;; if true, the turtle is infectious
    remaining-immunity   ;; how many weeks of immunity the turtle has left
    sick-time
  ]

patches-own [ fertile?  object-energy countdown]


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; setup procedures ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

to setup
  clear-all
  set cockroaches-born 0
  set cockroaches-died 0

  set cockroach-size 1.2
  set trap-size 2.0
  set poison-size 2.0
  ;set immunity-duration 24 * 60
  set cockroaches-stride 0.3
  set cockroach-reproduce-age 60
  set min-reproduce-energy-cockroaches 30
  set max-cockroaches-offspring 2
  set max-cockroaches-age 1000
  set amount-of-food-cockroaches-eat 4.0
  set trash-level 0

  set sprout-delay-time 25
  set trash-growth-rate 5
  set max-object-energy 100

  set cockroaches-color (black)
  set trash-color (green)
  set traps-color (violet)
  set dirt-color (white)
  set poison-color (red)
  set-default-shape cockroaches "bug"
  set-default-shape traps "box"
  set-default-shape poisons "box"
  set-default-shape embers "x"
  reset-ticks
  add-starting-trash
  add-cockroaches
  ;add-traps
  update-display
  
  reset-ticks
end

to add-starting-trash
  let number-patches-with-trash (floor (amount-of-trash * (count patches) / 100))
  ask patches [
      set fertile? false
      set object-energy 0
    ]
  ask n-of number-patches-with-trash patches  [
      set fertile? true
      set object-energy max-object-energy / 2
    ]
  ask patches [color-trash]
end

to add-cockroaches
  create-cockroaches initial-number-cockroaches  ;; create the cockroaches, then initialize their variables
  [
    set color cockroaches-color
    set size cockroach-size
    set energy 20 + random 20 - random 20 ;; randomize starting energies
    set current-age 0  + random max-cockroaches-age     ;; start out cockroaches at different ages
    set max-age max-cockroaches-age
    set #-offspring 0
    setxy random world-width random world-height
    get-healthy
  ]
  ;ask n-of 10 cockroaches [ get-sick ]
end

to get-healthy ;; turtle procedure
  set sick? false
  set remaining-immunity 0
  set sick-time 0
end

to get-sick ;; turtle procedure
  set sick? true
  set remaining-immunity 0
end

to become-immune ;; turtle procedure
  set sick? false
  set sick-time 0
  set remaining-immunity immunity-duration
end

to add-traps
  create-traps number-traps  ;; create the traps, then initialize their variables
  [
    set color traps-color
    set size trap-size
    setxy random world-width random world-height
  ]
end

to add-poison-bait
  create-poisons 1  ;; create a poison-bait, then initialize their variables
  [
    set color poison-color
    set size poison-size
    setxy random world-width random world-height
  ]
end


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; runtime procedures ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

to go
;if ticks >= 1000 and constant-simulation-length? [stop]
  ask cockroaches [
    cockroaches-live
    if sick? [ recover-or-die ]
    ifelse sick? [ infect ] [ reproduce-cockroaches ]
    ]
  ask traps [
    trap-cockroaches
    ]
  ask poisons [
    poision-cockroaches
  ]
  ask patches [
    set countdown random sprout-delay-time
    grow-trash
    ]   ;; only the fertile patches can grow trash
  fade-embers
  age-disease-markers
  update-display
  tick
end

to kill-a-%-of-cockroaches
  ;; procedure for removing a percentage of cockroaches (when button is clicked)
  let number-cockroaches count cockroaches
  ask n-of floor (number-cockroaches * strength-of-killing / 100) cockroaches [
    hatch 1 [
     set current-age  0
     set breed disease-markers
     set size 1.5
     set shape "x"
     set color red
     ]
    set cockroaches-died (cockroaches-died + 1)
    die
  ]
end

to trap-cockroaches  ;; traps procedure
    if (any? cockroaches-here)
        [ask cockroaches-here
          [die]
         ]
end

to poision-cockroaches   ;; poison procedure
  if (any? cockroaches-here)
  [if random-float 100 < poison-infectious
    [ask cockroaches-here
    [get-sick]]
    ]
end

to dump
  let current-trash-patches patches with [fertile?]
  let current-burn-patches n-of floor ( (count current-trash-patches) * degree-of-dumping / 100) current-trash-patches
  ask current-burn-patches [
    set countdown sprout-delay-time
    set object-energy 0
    color-trash
    create-ember
    ]
end

to create-ember ;; patch procedure
  sprout 1 [
    set breed embers
    set current-age (round countdown / 4)
    set color [255 255 0 255]
    set size 1
    set color red
    ]
end

to age-disease-markers
  ask disease-markers [
      set current-age (current-age  + 1)
      set size (1.5 - (1.5 * current-age  / 20))
      if current-age  > 25  or (ticks = 999)  [die]
   ]
end

to fade-embers
  let ember-color [red]
  let transparency 0
  ask embers [
    set shape "x"
    set current-age (current-age - 1)
    set transparency round floor current-age * 255 / sprout-delay-time
   ;; show transparency
    set ember-color lput transparency [255 155 0]
  ;;  show ember-color
    if current-age <= 0 [die]
    set color ember-color
  ]
end

to cockroaches-live
    move-cockroaches
    set energy (energy - 1)  ;; cockroaches lose energy as they move
    set current-age (current-age + 1)
    if immune? [ set remaining-immunity remaining-immunity - 1 ]
    if sick? [ set sick-time sick-time + 1 ]
    cockroaches-eat-trash
    death
end

to move-cockroaches
  rt random 50 - random 50
  fd cockroaches-stride
end

;; If a cockroach is sick, it infects other cockroaches on the same patch.
;; Immune cockroaches don't get sick.
to infect ;; cockroaches procedure
  ask other cockroaches-here with [ not sick? and not immune? ]
    [ if random-float 100 < poison-infectious
      [ get-sick ] ]
end

;; Once the cockroach has been sick long enough, it
;; either recovers (and becomes immune) or it dies.
to recover-or-die ;; cockroaches procedure
  if sick-time > duration                        ;; If the cockroach has survived past the virus' duration, then
    [ ifelse random-float 100 < chance-recover   ;; either recover or die
      [ become-immune ]
      [ die ] ]
end

to-report immune?
  report remaining-immunity > 0
end

to update-display
  ask cockroaches
    [ set color ifelse-value sick? [ red ] [ ifelse-value immune? [ blue ] [ black ] ] ]
end

to cockroaches-eat-trash  ;; cockroaches procedure
  ;; if there is enough trash to eat at this patch, the cockroaches eat it
  ;; and then gain energy from it.
  if object-energy > amount-of-food-cockroaches-eat  [
    ;; objects lose ten times as much energy as the cockroaches gains (trophic level assumption)
    set object-energy (object-energy - (amount-of-food-cockroaches-eat * 10))
    set energy energy + amount-of-food-cockroaches-eat  ;; cockroaches gain energy by eating

  ]
  ;; if object-energy is negative, make it positive
  if object-energy <=  amount-of-food-cockroaches-eat  [set countdown sprout-delay-time ]
end

to reproduce-cockroaches  ;; cockroaches procedure
  let number-new-offspring (random (max-cockroaches-offspring + 1)) ;; set number of potential offpsring from 1 to (max-cockroaches-offspring)
  if (energy > ((number-new-offspring + 1) * min-reproduce-energy-cockroaches)  and current-age > cockroach-reproduce-age)
  [
      set energy (energy - (number-new-offspring  * min-reproduce-energy-cockroaches))      ;;lose energy when reproducing --- given to children
      set #-offspring #-offspring + number-new-offspring
      set cockroaches-born cockroaches-born + number-new-offspring
      ifelse sick? = true
      [hatch number-new-offspring
        [
          set size cockroach-size
          set energy min-reproduce-energy-cockroaches ;; split remaining half of energy amongst litter
          set current-age 0
          set #-offspring 0
          rt random 360 fd cockroaches-stride  ;; hatch an offspring set it heading off in a a random direction and move it forward a step
          get-sick
        ]
      ]
      [hatch number-new-offspring
        [
          set size cockroach-size
          set energy min-reproduce-energy-cockroaches ;; split remaining half of energy amongst litter
          set current-age 0
          set #-offspring 0
          rt random 360 fd cockroaches-stride  ;; hatch an offspring set it heading off in a a random direction and move it forward a step
          get-healthy
        ]
       ]
  ]
end

to death
  ;; die when energy dips below zero (starvation), or get too old
  if (current-age > max-age) or (energy < 0)
  [ set cockroaches-died (cockroaches-died + 1)
    die ]
end

to grow-trash  ;; patch procedure
  set countdown (countdown - 1)
  ;; fertile patches gain 1 energy unit per turn, up to a maximum max-object-energy threshold
  if fertile? and countdown <= 0
     [set object-energy (object-energy + trash-growth-rate)
       if object-energy > max-object-energy
       [set object-energy max-object-energy]
       ]
  if not fertile?
     [set object-energy 0]
  if object-energy < 0 [set object-energy 0 set countdown sprout-delay-time]
  color-trash
end

to color-trash
  ifelse fertile? [
    ifelse object-energy > 0
    ;; scale color of patch from whitish green for low energy (less foliage) to green - high energy (lots of foliage)
    [set pcolor (scale-color green object-energy  (max-object-energy * 2)  0)]
    [set pcolor dirt-color]
    ]
  [set pcolor dirt-color]
end
@#$#@#$#@
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PLOT
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@#$#@#$#@
## WHAT IS IT?

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@#$#@#$#@
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