NetLogo - In-Cone radius

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ask turtles
  [ ask patches in-cone 3 60
      [ set pcolor red ] ]

The code above means to have a cone of radius 3 and angle of 60 degrees. But I want a radius in range of 5 to 10. Is there a way to accomplish this?

netlogo
2 Answers

Here are a couple of ways you could do it. These are adapted into the Vision Cone Example model that comes in the models library with NetLogo, so we're using slightly different distances (between 9 and 30) to make the effect visually obvious. I'd recommend method1, but I'm including method2 as it's useful if you have some alternate logic to apply to the patches that are too close.

to method1 
  ; use `distance` to filter those that are too close
  ; `myself` refers to the turtle doing the asking
  ask patches in-cone 30 60 with [distance myself >= 9] [
    set pcolor grey
  ]
end

to method2
  ; create a local variable to store the turtles that 
  ; will be too close.  `self` refers to the patch
  ; being asked
  let too-close patches in-cone 9 60
  ask patches in-cone 30 60 with [not member? self too-close] [
    set pcolor gray
  ]
  ; I could use the `too-close` agentset here and ask them
  ; to do something, also.
end
user_12460110

What you can do is set up a variable that will hold the radius's that you have asked for. Let's call this variable vision. So,

let vision
set vision 5 + (random 5)

and then you can substitute vision instead of the 3 in your code.

ask turtles in-cone vision 60 [
set pcolor red
]
user_150733640
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