为什么我的品种不会走路？

Question

我正在生物反应器中构建模型种群，建立在一个基本教程之上，讲述如何进食、繁殖和死亡等。在修修补补时，我的海龟停止了行走。我怀疑这与如何要求不同品种做事有关？

编辑：出于某种原因，我的污染物也"wheels"

turtles-own [ energy ]  
patches-own [ nutrition ]
breed [ Xanthomonas Xanthomona ]
breed [ contaminants contaminant ]

globals 
[ xanthan biomass ]

to setup
  clear-all
  setup-patches
  set-default-shape Xanthomonas "bug"
  set-default-shape contaminants "wheel"
  crt num-Xanthomonas
  [set color yellow
    set energy 10 
    setxy random-xcor random-ycor
  ]
  foul
  determine-biomass
   reset-ticks
    ;; begins defining a procedure named "setup"
    ;; resets the world to an initial, empty state
    ;; creates 100 turtles, they start out standing at the origin 0,0
    ;; set default shape so I don't have to tell it every time
    ;; A turtle's color variable is random until specified
    ;; setxy command with next two numbers as inputs
    ;; chooses random reporters for allowable x and y coordinates
End

to setup-patches 
  ask patches
  [ set pcolor green
    set nutrition 50
  ]
  ;; every patch starts with 50 nutrition, the color indicates it for us
end

to foul
  set-default-shape contaminants "wheel"
  if Contamination?
  [ crt num-contaminants
    [ set color red
        setxy random-xcor random-ycor
  ]
  compete ]
end

to go
  if ticks >= 2000 [ stop ]
  if count turtles > 2000 [stop]
  if count turtles = 0 [stop]
    feed
  move-turtles
  ask turtles 
  [eat-glucose]
  ask Xanthomonas
  [reproduce]
  check-death
    tick
end

to determine-biomass
  ifelse Contamination?
    [set biomass num-Xanthomonas + num-contaminants
    ]
        [set biomass num-Xanthomonas ]
end 

to move-turtles   
  ;; says that each turtle should run the commands in the brackets
  ;; random doesn't include the number you give it as a possible result
  ;; uses a reporter, each turtle picks a random whole number between 0 and 359
  ;; makes the turtle move forward one step
  ;;specify what you're defining will lose 1 energy per step
 ask Xanthomonas
 [ right random 360
   forward 1
   set energy energy - 1 ]
end

to Feed
  if Continuous-feed?
    [ ask patches
      [if random 100 < 3
      [set pcolor green
    set nutrition nutrition + 50
      ] ] ]
end

to eat-glucose
  ask Xanthomonas
   [ if pcolor = green 
    [ set energy energy + 10
      set nutrition nutrition - 50
      set pcolor gray
      set biomass biomass + 1
    ] ]
  ifelse show-energy?
    [ set label energy ]
    [ set label "" ]
  ;;ask turtles before "if"
  ;;if when true, and only then will the turtle run the commands inside the brackets (otherwise it skips them)
  ;;true/false questions, if true, will do first set of brackets
  ;;false means turtle runs commands in second set of bracket
  ;;energy (elements) will default to zero
end

to reproduce
  ask Xanthomonas
  [ if energy > 50
    [set energy energy - 50
      set xanthan xanthan + 1
      hatch-Xanthomonas 1
      [set biomass biomass + 1
        rt random-float 360 fd 1
      ] ] ]
  end

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

to reinoculate
    ask patches [
      if random 100 < 10 
      [ set pcolor green 
      ]
    ]
end

to Contaminate
  crt num-contaminants
  [ set color red
    setxy random-xcor random-ycor
  ]
end

to compete
  ask contaminants
  [ if energy > 50
    [set energy energy - 50
      set xanthan xanthan + 1
      hatch-contaminants 1
      [ set color red 
        set biomass biomass + 1
        rt random-float 360 fd 1
      ] ] ]
end

Answer 1

好的，您的基本问题是 crt 命令。这是 create-turtles 的缩写。你这里有两个品种，你已经定义了它们。但是，当您创建海龟时，您并没有告诉 NetLogo 要创建哪个品种。

这意味着您需要进行一些小的更改以指定品种。如果你查字典，你会看到命令是 create-<breed>。在你有 crt num-Xanthomonas 的地方，将其更改为 create-Xanthomonas num-Xanthomonas 并且在你创建污染物的地方也类似。

为什么我的品种不会走路？

Why won't my breed walk?

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