（第36行）这里需要一个数字，而不是一个列表或块

Question

不知道这到底意味着什么或是什么原因造成的。我的代码很大程度上是根据社区模型“Fire”建模的 错误：（第 36 行）这里需要一个数字，而不是一个列表或块。

globals [
  initial-plants  
  triggered-plants    
]

breed [signals signal]   

to setup
  clear-all
  set-default-shape turtles "square"
  ask patches with [(random-float 100) < density]
    [ set pcolor green ]
  ask patches with [pxcor = min-pxcor]
    [ transmit ]
  set initial-plants count patches with [pcolor = green]
  set triggered-plants 0
  ask patches with [ pcolor = red ] [
    ; See if there is any possible neighbor patch
    ; to whom I can spread my lack of concentration
    let target one-of neighbors4 with [ pcolor = green ]

    ; if the target exists, have them change their color
    if target != nobody [
      ask target [ 
        set pcolor red
      ]
    ]
  ]
  reset-ticks
end

to go
  if not any? turtles  
    [ stop ]
  ask signal
    [ask neighbors4 with [pcolor = green]
      [ transmit ] ]
  tick
end

to transmit  
  start signal 1
    [ set color blue ]
  set pcolor black
  set triggered-plants triggered-plants + 1
end

我尝试寻找任何看起来不合适或有故障的东西，但我找不到。我的代码很短，所以应该不会那么难

Answer 1

您使用了单数“signal”，但需要使用复数“signals”。或者指定哪个信号。这就是您所描述的错误的来源。

此外，由于您使用了未定义的

start

，您收到了错误，但我认为这是您正在处理的其他事情？

这是您的代码的修订版本：

globals [
  initial-plants  
  triggered-plants    
]

breed [signals signal]   

to setup
  clear-all
  set-default-shape turtles "square"
  ask patches with [(random-float 100) < density]
    [ set pcolor green ]
  ask patches with [pxcor = min-pxcor]
    [ transmit ]
  set initial-plants count patches with [pcolor = green]
  set triggered-plants 0
  ask patches with [ pcolor = red ] [
    ; See if there is any possible neighbor patch
    ; to whom I can spread my lack of concentration
    let target one-of neighbors4 with [ pcolor = green ]

    ; if the target exists, have them change their color
    if target != nobody [
      ask target [ 
        set pcolor red
      ]
    ]
  ]
  reset-ticks
end

to go
  if not any? turtles  
    [ stop ]
  ask signals
    [ask neighbors4 with [pcolor = green]
      [ transmit ] ]
  tick
end

;to transmit  
;  start signal 1
;    [ set color blue ]
;  set pcolor black
;  set triggered-plants triggered-plants + 1
;