# Rock Scissors Paper Competitive Environment

Model was written in NetLogo 5.1.0
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globals [ colist rockbred rockspawn scissorbred scissorspawn paperbred paperspawn rockkill scissorkill paperkill ] turtles-own [ energy adjust ] breed [ rocks rock ] breed [ papers paper ] breed [ scissors scissor ] to setup clear-all set colist (list random 255 random 255 random 255) ask patches [ set pcolor black ] create-rocks number-rocks [ create "rockblob" red - 1 ] create-papers number-papers [ create "paperblob" lime - 1 ] create-scissors number-scissors [ create "scissorblob" blue - 1 ] reset-ticks end to create [form col] set shape form setxy random-xcor random-ycor right random 360 set color col end to go if (ticks >= duration) and Timed [ stop ] ;; stop after set duration of ticks ask turtles [ ifelse Draw [pendown][pen-erase] ] resources moveall feed kills reproduce if respawn-interval > 0 [ respawns ] ;; switch off respawns of interval zero tick end to moveall if r-hunt [ hunt rocks] if s-hunt [ hunt scissors] if p-hunt [ hunt papers] if r-find [ find rocks ] if s-find [ find scissors ] if p-find [ find papers ] if r-evade [ evade rocks] if s-evade [ evade scissors] if p-evade [ evade papers] if r-avoid [ avoid rocks] if s-avoid [ avoid scissors] if p-avoid [ avoid papers] move rocks rock% move scissors scissor% move papers paper% end to move [brd var] ask brd [ forward 0.01 * speed * (var / 100) ] end to kills ask papers [ if predation and p-gain [ set energy energy + (count rocks-here) * predation-gain ] ask rocks-here [ set rockkill rockkill + 1 die ] ] ask rocks [ if predation and r-gain [ set energy energy + (count scissors-here) * predation-gain ] ask scissors-here [ set scissorkill scissorkill + 1 die ] ] ask scissors [ if predation and s-gain [ set energy energy + (count papers-here) * predation-gain ] ask papers-here [ set paperkill paperkill + 1 die ] ] end to resources ask patches [ let erg-available random 100 if (erg-available < energy-input-chance) and (ticks mod energy-input-delay = 0) [ set pcolor black + 1 ] ] end to feed ask turtles [ if pcolor = black + 1 [ set pcolor black set energy energy + 1 ] ifelse show-energy [ set label energy ] ;; the label is set to be the value of the energy [ set label "" ] ;; the label is set to an empty text value ] end to reproduce ask rocks [ set adjust rocks+ ] ask scissors [ set adjust scissors+ ] ask papers [ set adjust papers+ ] ask turtles [ if energy > (reproduction-energy + adjust)[ set energy energy - (reproduction-energy + adjust) ;; take away reproduction-energy for mitosis hatch 1 [ right random 360 if breed = rocks [ set rockbred rockbred + 1 ] if breed = scissors [ set scissorbred scissorbred + 1 ] if breed = papers [ set paperbred paperbred + 1 ] ] ] ] end to respawns if ticks mod respawn-interval = 0 [ create-rocks 1 [ create "rockblob" red - 1 set rockspawn rockspawn + 1 ] create-papers 1 [ create "paperblob" lime - 1 set paperspawn paperspawn + 1 ] create-scissors 1 [ create "scissorblob" blue - 1 set scissorspawn scissorspawn + 1 ] ] end to hunt [brd] if brd = rocks [ ask brd [ let found (one-of scissors-on neighbors) if found != nobody [set heading towards found] ] ] if brd = scissors [ ask brd [ let found (one-of papers-on neighbors) if found != nobody [set heading towards found] ] ] if brd = papers [ ask brd [ let found (one-of rocks-on neighbors) if found != nobody [set heading towards found] ] ] end to evade [brd] if brd = rocks [ ask brd [ let found (one-of papers-on neighbors) if found != nobody [set heading (towards found + 180)] ] ] if brd = scissors [ ask brd [ let found (one-of rocks-on neighbors) if found != nobody [set heading (towards found + 180)] ] ] if brd = papers [ ask brd [ let found (one-of scissors-on neighbors) if found != nobody [set heading (towards found + 180)] ] ] end to avoid [brd] if brd = rocks [ ask brd [ let found (one-of scissors-on neighbors) if found != nobody [set heading (towards found + 180)] ] ] if brd = scissors [ ask brd [ let found (one-of papers-on neighbors) if found != nobody [set heading (towards found + 180)] ] ] if brd = papers [ ask brd [ let found (one-of rocks-on neighbors) if found != nobody [set heading (towards found + 180)] ] ] end to find [brd] ask brd [ let found (one-of neighbors with [ pcolor = black + 1 ]) if found != nobody [set heading towards found] ] end to reset set rock% 100 set scissor% 100 set paper% 100 set rocks+ 0 set scissors+ 0 set papers+ 0 end

There is only one version of this model, created over 9 years ago by Rashid Mhar.

## Attached files

File | Type | Description | Last updated | |
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Rock Scissors Paper Competitive Environment.png | preview | Preview for 'Rock Scissors Paper Competitive Environment' | over 9 years ago, by Rashid Mhar | Download |

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