Turtles Grass Energy Birth Death

Turtles Grass Energy Birth Death preview image

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Default-person Allison Lui (Author)

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turtles-own [energy]

to go
  if ticks >= 500 [ stop ]
  move-turtles
  eat-grass
  reproduce
  check-death
  regrow-grass
  tick
end 

to setup
  clear-all
  setup-patches
  setup-turtles
  reset-ticks
end 

to setup-patches
  ask patches [ set pcolor green ]
end 

to setup-turtles
  create-turtles number [setxy random-xcor random-ycor ]
end 

to move-turtles
  ask turtles [
    right random 360
    forward 1
    set energy energy - 1
  ]
end 

to eat-grass
  ask turtles [
    if pcolor = green [
      set pcolor brown
      set energy ( energy + energy-from-grass)
    ]
    ifelse show-energy?
      [ set label energy ]
      [ set label "" ]
  ]
end 

to reproduce
   ask turtles [
    if energy > birth-energy [
      set energy energy - birth-energy
      hatch 1 [ set energy birth-energy]
    ]
  ]
end 

to check-death
  ask turtles [
    if energy <= 0 [die]
  ]
end 

to regrow-grass
  ask patches [
    if random 100 < 3 [set pcolor green]
  ]
end 

There is only one version of this model, created 8 days ago by Allison Lui.

Attached files

File Type Description Last updated
Turtles Grass Energy Birth Death.png preview Preview for 'Turtles Grass Energy Birth Death' 8 days ago, by Allison Lui Download

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