Bob the Sheepherder

Bob the Sheepherder preview image

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Default-person Tanya Harris (Author)

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Model was written in NetLogo 5.3.1 • Viewed 186 times • Downloaded 11 times • Run 0 times
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breed [sheep a-sheep]
breed [shepherds shepherd]

globals
[
  sheepless-neighborhoods       ;; how many patches have no sheep in any neighboring patches?
  herding-efficiency            ;; measures how well-herded the sheep are
  ones
  tens
  hundreds
]
patches-own
[
  sheep-nearby                  ;; how many sheep in neighboring patches?
]
shepherds-own
[

]

to setup
  clear-all
  set-default-shape sheep "sheep"
  set-default-shape shepherds "person"
  ask patches
    [ set pcolor green  + (random-float 0.8) - 0.4
      if pxcor > 40
      [ set pcolor (pcolor + 1) + (random-float 0.8) - 0.4 ]
      if pxcor > 20
      [ set pcolor (pcolor + 1)  + (random-float 0.8) - 0.4]
      ]  ;; varying the green just makes it look nicer

  create-sheep num-sheep
    [ set color white
      set size 2  ;; easier to see
      setxy (random 20) + 40  random-ycor ]
  create-shepherds 1
    [ set color brown
      set size 3  ;; easier to see

      setxy (random 20) + 40 random-ycor ]
     create-shepherds 1
    [ set color black
      set size 3  ;; easier to see

      setxy (random 20) + 20 random-ycor ]
  reset-ticks
end 

to go

  ask sheep with [not hidden?]
  [ if can-move? 1 = False ;; is the turtle blocked from moving foward 1 unit?
      [rt 180 ] ;; rotate 180 degree

      if xcor > 40 and size = 2 ;; is the sheep xcor greater than 40
      [ ;; sheep are in the ones column
        facexy  40 (ycor + random 3 - random 3)

        fd 1
      ]
     if xcor > 20 and xcor <= 40 and size = 5  ;; is the sheep xcor greater than 20
      [ ;; sheep are in the ones column
        facexy  20 (ycor + random 4 - random 4)

        fd 1
      ]
     if xcor >= 0 and xcor < 20 and size = 10 ;; is the sheep xcor greater than 0
      [ ;; sheep are in the ones column
        wiggle

         ifelse can-move? 1 = False ;; is the turtle blocked from moving foward 1 unit?
      [rt 180 ] ;; rotate 180 degree
      [ fd 1 ]
      ]

  ]
tick
set ones 0
ask sheep
[
  if  xcor < 41 and xcor > 39 and size = 2
  [
    set ones ones + 1
    die
  ]
  if  xcor < 21 and xcor > 19 and size = 5
  [
    set tens tens + 1
    die
  ]
]
print ones
print tens
tick
ask one-of sheep
[
   if ones >= 10
   [

      hatch int ( ones / 10 ) [
        setxy (random 15) + 20 random-ycor
        set size 5
      ]
      set ones ones mod 10

   ]
   hatch int ( ones mod 10 ) [
     setxy 40  random-ycor
     set size 2
   ]


   if tens >= 10
   [

      hatch int ( tens / 10 ) [
        setxy (random 15) random-ycor
        set size 10

      ]
      set tens tens mod 10

   ]

   hatch int ( tens mod 10 ) [
     setxy 20  random-ycor
     set size 5

   ]



set ones 0
set tens 0

]

ask sheep
[
 ifelse size = 10
 [ set color black]
 [ ifelse size = 5

   [set color blue]
   [set color white]
 ]
]
end 

to wiggle        ;; turtle procedure
  rt random 50 - random 50
end 

There is only one version of this model, created over 2 years ago by Tanya Harris.

Attached files

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Bob the Sheepherder.png preview Preview for 'Bob the Sheepherder' over 2 years ago, by Tanya Harris Download

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