Distance Towards and Stop Example

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Uri Wilensky (Author)

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$Id: Distance Towards and Stop Example.nlogo 37529 2008-01-03 20:38:02Z craig $

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globals [ dist ]

to setup
  ca
  ask patches [set pcolor white]
  crt 2
  ask turtles [ set size 5 fd 10]
  ask turtle 0 [ set dist distance (turtle 1) ]
end 

to go
  if (dist < min-distance ) [ stop ] ; This stops the procedure before a run time error.
  move ; If you make it dist < 1 you will get a run time error.
end 

to move
  ask turtle 0 [
    set dist distance (turtle 1) ;variable dist is set to the distance from turtle 1 to turtle 0.
    set heading towards turtle 1 ; turtle 0's heading is toward turtle 1.
    fd 1
    wait .1 ; just slows it down so you can it move.
  ]
end

There is only one version of this model, created over 14 years ago by Uri Wilensky.

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