Turtles trapped

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Default-person Roha Ali (Author)
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Model was written in NetLogo 6.0.3 • Viewed 271 times • Downloaded 31 times • Run 0 times
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ODD (Overview, Design, Detail Concepts): Overview:

Purpose: Purpose of this model is to perform simulations for turtles and trapped them in box and observe the behaviour.

Entities, state variables and scales

Entitiy | State variable | Symbol | Value Agents | Breeds | | Setting x position | pxcor | -150 + who * 3 | Setting y position | pycor | random | Size | size | 9 | Shape | shape | circle | Color | color | green | Patches | | Name patch | | Setting x position | pxcor | greater than equal to 0 | Setting y position | pycor | greater than equal to 0 | Color | color | red
| Label patch | | Setting x position | pxcor | 185 | Setting y position | pycor | 87 | Label | plabel | ROHA ALI | Label color | plabel-color | white Globals | Output | | Name patch | name-patch | default | Label patch | label-patch | default | Trapped | trapped? | true, false | Turtle ahead patch | turtle-patch | patches in cone 20 5 Grid cells| Maximum Horizontal position in grid | max-pxcor | 200 | Maximum Vertical position in grd | max-pycor | 200

Process overview and scheduling:

Simulations start with setup procedure screen is cleared and red box is created with label. Breeds are created with specified number in random position. After setup procedure, simulation state enter the main procedure. Breeds start walking randomly and getting trapped in the red box.

Design concepts Interaction: Breeds and patches interact with each other such as breeds walk and get trapped in one of box patches. Stochasticity: Breeds walk randomly on patches.

Initialization: The initialization process begins by setting up screen and setting font style.

Sub models Setup Name: This model is called by setup procedure. In this model, patches right above portion is set to red than we select one of its patches and assign label to it. Setup Breed: This model is also called by setup procedure. 26 Breeds are created and their position, color, size and shape is assigned. Wander: This model is called by go procedure. Breeds wander right left and then forward 1. Wander in letters: This model is also called by go procedure. Each breed have assigned vision cone with specified radius and diameter.If breeds see red patch then they head toowards letter. After that tey waander slowly and try too get out of box.

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Click to Run Model 

breed [ RohaAlis RohaAli ]
globals[ name-patch label-patch trapped? turtle-ahead ]

to setup
  clear-all
  ask patches [ set pcolor white]
  setupname
  setup-breeds
  reset-ticks
end 

to setupname
  set name-patch patches with [ pxcor >= 0 and pycor >= 0]
  ask name-patch [
    set pcolor red
  ]
  ask patch 185 87 [
  set label-patch self
  set plabel-color white
  set plabel "ROHA ALI"
  ]
end 

to setup-breeds
  create-RohaAlis 26
  ask RohaAlis [
    setxy -150 + who * 3 random-ycor
    set shape "circle"
    set size 9
    set color green
  ]
end 

to go
  ask RohaAlis
  [
  wander
  wander-in-letters
  ]
    if get-untrapped  = 0 [ stop ]
  tick
end 

to wander
  rt random 20
  lt random 20
  fd 0.6
  if  (any? other RohaAlis-here) [wander]
end 

to wander-in-letters
  set turtle-ahead other patches in-cone 20 5
  if ( pcolor = red )
  [
    set heading towards label-patch
    rt random 20
    lt random 20
    fd 0.62
   set trapped? true
   if ( [pxcor] of patch-ahead 0.1 > 0 ) and  ( trapped? = true )
    ;;if so, reflect heading around x axis
  [ set heading (- heading)
  ]
  ; check: hitting top or bottom wall?
  if ( [pycor] of patch-ahead 0.1 > 0 ) and ( trapped? = true )
    ; if so, reflect heading around y axis
    [ set heading (180 - heading)
  ]
  if pcolor = white [ set trapped? false ]
  ]
end 

to-report get-trapped
  report count RohaAlis with [ pcolor = red ]
end 

to-report get-untrapped
  report count RohaAlis with [ pcolor = white ]
end

There is only one version of this model, created about 7 years ago by Roha Ali.

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