Bluebles2

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Default-person Kay Ramey (Author)

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Model group LS426-2012 | Visible to everyone | Changeable by the author
Model was written in NetLogo 5.0RC7 • Viewed 123 times • Downloaded 7 times • Run 0 times
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globals [trees]  ;; keep track of how many trees there are
          
;; spiny bluebles, blue longneck bluebles, green longneck bluebles and green bluebles are all breeds of turtles
breed [spinybluebles spinyblueble]
breed [bluelongneckbluebles bluelongneckblueble]
breed [greenlongneckbluebles greenlongneckblueble]
breed [greenbluebles greenblueble] 
turtles-own [energy]       
patches-own [countdown]

to setup
  clear-all
  ask patches [ set pcolor 62 ]
  ask patches [
      set countdown random 10 ;; initialize tree grow clocks randomly
      set pcolor one-of [62 white] ;; dark green or white
    ]
 
   set-default-shape spinybluebles "spiny blueble"
  create-spinybluebles initial-number-spinybluebles  ;; create the spiny bluebles, then initialize their variables
  [
    set color 105 ;; blue
    set size 7  ;; easier to see    
    set energy random 50
    setxy random-xcor random-ycor
  ]
   set-default-shape bluelongneckbluebles "longneck blueble"
  create-bluelongneckbluebles initial-number-bluelongneckbluebles  ;; create the blue longneck bluebles, then initialize their variables
  [
    set color 105 ;; blue
    set size 7  ;; easier to see    
    set energy random 50
    setxy random-xcor random-ycor
  ]
  set-default-shape greenlongneckbluebles "longneck blueble"
  create-greenlongneckbluebles initial-number-greenlongneckbluebles  ;; create the green longneck bluebles, then initialize their variables
  [
    set color 64 ;; green
    set size 7  ;; easier to see    
    set energy random 50
    setxy random-xcor random-ycor
  ]
  
   set-default-shape greenbluebles "spiny blueble"
  create-greenbluebles initial-number-greenbluebles  ;; create the green bluebles, then initialize their variables
  [
    set color 64 ;; green
    set size 7  ;; easier to see    
    set energy random 50
    setxy random-xcor random-ycor
  ]
   RESET-TICKS
end 

to go
  if not any? turtles [ stop ]
  ask spinybluebles [
    move
      set energy energy - 1  ;; deduct energy for spinybluebles
    death
    reproduce-spinybluebles
  ]
   ask bluelongneckbluebles [
    move
      set energy energy - 1  ;; deduct energy for bluelongneckbluebles 
      eat-trees
    death
    reproduce-bluelongneckbluebles
  ]
      ask greenlongneckbluebles [
    move
      set energy energy - 1  ;; deduct energy for greenlongneckbluebles
      eat-trees 
    death
    reproduce-greenlongneckbluebles
  ]
  ask greenbluebles [
    move
      set energy energy - 1  ;; deduct energy for greenbluebles 
    death
    reproduce-greenbluebles
  ]
 
 ask patches [ grow-trees ] 
  set trees count patches with [pcolor = 62] ;; dark green
  tick
end 

to move  ;; turtle procedure
  rt random 50
  lt random 50
  fd 1
end 

to eat-trees  ;; longneck bluebles procedure
  ;; longneck bluebles eat grass, turn the patch white
  if pcolor = 62 [ ;; dark green
    set pcolor white 
    set energy energy + 2 ;; longneck bluebles gain energy by eating
  ]
end 

to reproduce-spinybluebles  ;; spinybluebles procedure
  if random-float 100 < bluebles-reproduce [  ;; throw "dice" to see if you will reproduce
    set energy (energy / 2)                ;; divide energy between parent and offspring
    hatch 1 [ rt random-float 360 fd 1 ]   ;; hatch an offspring and move it forward 1 step
  ]
end 

to reproduce-bluelongneckbluebles  ;; bluelongneckbluebles procedure
  if random-float 100 < bluebles-reproduce [  ;; throw "dice" to see if you will reproduce
    set energy (energy / 2)                ;; divide energy between parent and offspring
    hatch 1 [ rt random-float 360 fd 1 ]   ;; hatch an offspring and move it forward 1 step
  ]
end 

to reproduce-greenlongneckbluebles  ;; bluelongneckbluebles procedure
  if random-float 100 < bluebles-reproduce [  ;; throw "dice" to see if you will reproduce
    set energy (energy / 2)                ;; divide energy between parent and offspring
    hatch 1 [ rt random-float 360 fd 1 ]   ;; hatch an offspring and move it forward 1 step
  ]
end 

to reproduce-greenbluebles  ;; greenbluebles procedure
  if random-float 100 < bluebles-reproduce [  ;; throw "dice" to see if you will reproduce
    set energy (energy / 2)                ;; divide energy between parent and offspring
    hatch 1 [ rt random-float 360 fd 1 ]   ;; hatch an offspring and move it forward 1 step
  ]
end 

to death  ;; turtle procedure
  ;; when energy dips below zero, die
  if energy < 0 [ die ]
end 

to grow-trees  ;; patch procedure
  ;; countdown on white patches: if reach 0, grow some grass
  if pcolor = white [
    ifelse countdown <= 0
      [ set pcolor 62
        set countdown 10 ]
      [ set countdown countdown - 1 ]
  ]
end 

There is only one version of this model, created over 7 years ago by Kay Ramey.

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