sharks-seals-fish-simple
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breed[fish fishes] breed[seals seal] breed[sharks shark] patches-own [ countdown] turtles-own [ energy] to setup clear-all reset-ticks ask patches [ set pcolor one-of [green black] ifelse pcolor = green [set countdown algae-regrowth-time] [set countdown random algae-regrowth-time]] create-sharks initial-number-sharks [set shape "shark" set color blue set size 2 setxy random-xcor random-ycor set energy random 10] create-seals initial-number-seals [set shape "seal" set color white set size 1.5 setxy random-xcor random-ycor set energy random 10] create-fish initial-number-fish [set shape "fish 3" set color orange set size 1 setxy random-xcor random-ycor set energy random 10] end to go ask sharks [move eat-seals eat-fish death reproduce] tick ask seals [move eat-fish death reproduce] tick ask fish [move eat-algae death reproduce] tick end to move rt random 50 lt random 50 fd 1 set energy energy - 1 end to eat-seals let prey one-of seals-here if prey != nobody [ask prey [die] set energy energy + 1] end to eat-fish let prey one-of fish-here if prey != nobody [ask prey [die] set energy energy + 1] end to eat-algae if pcolor = green [set pcolor black set energy energy + 1] end to death if energy <= 0 [die] end to reproduce if energy > 0 and random-float 100 < 20 [hatch 1 [ rt random-float 360 fd 1] set energy random 10] end
There is only one version of this model, created 3 months ago by Siobhan Sheehan.
Attached files
File | Type | Description | Last updated | |
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sharks-seals-fish-simple.png | preview | Preview for 'sharks-seals-fish-simple' | 3 months ago, by Siobhan Sheehan | Download |
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