Garden ecosystem

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Default-person Becca Shareff (Author)

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biology 

Tagged by Becca Shareff about 2 years ago

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breed [farmers farmer]
breed [plants plant]
breed [weeds weed]


turtles-own [energy my-heading]
patches-own [nutrients fertile] ;; nutrients determines the soil quality. fertile determines if a seed can be sprouted there; affected by spacing.

globals [
  total-harvested;; lbs of produce harvested by the farmer
  money;; budget for the project
crop
]

to setup
  clear-all
  setup-patches
  setup-turtles
  make-farmer
  reset-ticks
  set money (budget - (count plants * plant-cost))
end 

to setup-patches
  ask patches [
   set nutrients (random 15) ]
  repeat 5 [diffuse nutrients 1]
  ask patches [
   set pcolor scale-color brown nutrients  10 0
   if remainder pxcor spacing = 0 and remainder pycor spacing = 0 [set fertile true ]]
end 

to setup-turtles
  create-weeds 0
end 

to make-farmer
  create-farmers 1 [
    set color cyan
    set size 3
    set shape "farmer"
    setxy 0 0
    set heading 90
    set my-heading 270
    run "seed"
  ]
end 

to seed
  repeat (number-plants)
[
 ask farmers [
  (ask patch-here [
      if fertile = true and not any? plants-here [
        sprout-plants 1 [
          set shape "plant"
          set size 0.2
          set energy 2
        ]]])
  fd (spacing)
  if not can-move? 1 [
    set heading 0
    fd spacing
    set heading my-heading
    ifelse my-heading = 90 [set my-heading 270] [set my-heading 90]

  ]]

]
end 

to re-seed
  repeat (number-plants * spacing)
[
  ask farmers [fd spacing
  (ask patch-here [
      if fertile = true and not any? plants-here [
        sprout-plants 1 [
          set shape "plant"
          set size 0.2
          set energy 2
        ]]])
  if not can-move? 1 [
    set heading 0
    fd spacing
    set heading my-heading
    ifelse my-heading = 90 [set my-heading 270] [set my-heading 90]

  ]]]
end 

to go
      animate
       tick
end 

to animate
 ask turtles [
   run word breed "-grow"
   run word breed "-check-if-dead"
   run word breed "-eat" ]
  ;wait 1
 if any? patches with [not any? plants-here and nutrients > 5] [
   ask one-of patches with [not any? plants-here and nutrients > 5] [
    sprout-weeds 1 [
      set breed weeds
      set shape "flower budding"
      set color lime
      set energy 1
      set size 0.03;; somehow I want to adjust this so that plants are more likely to appear in spaces with high nutrient level
harvest-plants
 harvest-weeds
    ]]]
end 

to plants-grow
  if (energy > 3) [set size size + 0.02]
end 

to weeds-grow;;
    if (energy > 2) [set size size + 0.04];; arbitrary numbers but weeds grow faster
end 

to farmers-grow
end 

to plants-check-if-dead
  if (energy <= 0) [
    set nutrients (nutrients + 0.5)
    set pcolor scale-color brown nutrients 10 0
    die
    ]
  ;;maybe have them "flash" before they die, or 'turn red, wait 3' so we know to look at them **note that i can't get this part to work. they freeze up.
end 

to weeds-check-if-dead
  if (energy <= 0) [ die ]
end 

to farmers-check-if-dead
end 

to plants-eat
  if (nutrients >= 1) [
      set energy energy + 1
      set nutrients (nutrients - 0.2)
      ask neighbors4 [set nutrients (nutrients - 0.05)
        set pcolor scale-color brown nutrients 10 0];; plants slowly take nutrients from soil
      set pcolor scale-color brown nutrients 10 0]
  if (nutrients < 1) [
      set energy energy - 0.1];; if no nutrients in the soil, this arbitrary rate is how fast they will die
end 

to weeds-eat
  if (nutrients >= 1) [
  set energy energy + 1
  set nutrients (nutrients - 0.1)
  ask neighbors4 [
    set nutrients (nutrients - 0.08)
    set pcolor scale-color brown nutrients 10 0];; weeds take nutrients from soil less quickly
  set pcolor scale-color brown nutrients 10 0]
  if (nutrients < 1) [
  set energy energy - 0.1];; if no nutrients in the soil, this arbitrary rate is how fast they will die
end 

to farmers-eat
end 

to harvest-plants
  ask farmers [
    set hidden? not mouse-inside?
    setxy mouse-xcor mouse-ycor
  ]
  if mouse-inside? and mouse-down? [
    set crop plants with [distance one-of farmers < (size / 2)]
    if any? crop [
      let weight sum [size] of crop
      set total-harvested (total-harvested + (ceiling (1.5 * weight * count crop)))



ask crop [ die ]
    ]]
end 

to harvest-weeds
  ask farmers [
    set hidden? not mouse-inside?
    setxy mouse-xcor mouse-ycor
  ]
  if mouse-inside? and mouse-down? [
    let weedable weeds with [distance one-of farmers < (size * 2)]
    if any? weedable [

ask weedable [ die ]
    ]
  ]
end 

to add-compost
  ask patches [set nutrients (nutrients + 5) set pcolor scale-color brown nutrients 10 0 ]
set money (money - 20)
end 

to add-herbicide
  ask weeds [die]
  ask plants [
    set energy energy - 2]
  ask patches [set nutrients (nutrients - 2) set pcolor scale-color brown nutrients 10 0 ]
set money (money - 30)
end 

There is only one version of this model, created about 2 years ago by Becca Shareff.

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