Netlogo increase turtle number by tick - netlogo

Question

I am trying to build a model where turtle move one patch per tick with random movement. I am looking for a solution to increase the number of turtle per tick based on the percentage. For ex. In the beginning there are 7 turtles, by each tick they should increase by following percentage:
10.72%
10.83%
10.93%
11.03%
11.11%
11.19%
11.27%
11.33%
11.39%
11.45%
Not sure if this is possible? If needed this can be round up to whole number.
If this is not possible, how can I increase the turtle number by 11% each tick for 10 ticks then after 12% each tick for another 10 ticks and so on?
Below is the code that I am using.
to setup
clear-all
setup-turtles
setup-patches
reset-ticks
end
to setup-patches
ask patches [ set pcolor green ]
end
to setup-turtles
create-turtles tourists [setxy random-xcor random-ycor ]
ask turtles [ set shape "person" set size 2 ]
end
to go
if ticks >= 130 [ stop ]
move-turtles
eat
tick
end
to move-turtles
ask turtles [ right random 360 forward 1]
end
to eat
ask turtles [ if pcolor = green [ set pcolor black ] ]
end
Thank you for your support.
Avi

Answer 1

I think your model is very similar to 'Rabbits Grass Weeds' in the Models Library so you might want to have a look at that to get some ideas. Focusing just on the revised question of moving to a green patch, you need with, which will restrict choices. Note that the code below will break if there are no neighbouring patches that are green.
to setup
clear-all
setup-turtles
setup-patches
reset-ticks
end
to setup-patches
ask patches [ set pcolor green ]
end
to setup-turtles
create-turtles 7 [setxy random-xcor random-ycor ]
ask turtles [ set shape "person" set size 2 ]
end
to go
if ticks >= 130 [ stop ]
move-turtles
increase-turtles
tick
end
to move-turtles
ask turtles [ move-to one-of neighbors with [pcolor = green] ]
end
to increase-turtles
ask one-of turtles [ hatch 1 ]
end
I used hatch in this code, which gets one turtle to create another turtle at the same place with the same colour etc. If you want to just create a new turtle in exactly the same way as your original turtles, then you want something more like this.
to setup
clear-all
make-turtles 7
setup-patches
reset-ticks
end
to setup-patches
ask patches [ set pcolor green ]
end
to make-turtles [ num ]
create-turtles num
[ setxy random-xcor random-ycor
set shape "person"
set size 2
]
end
to go
if ticks >= 130 [ stop ]
move-turtles
increase-turtles
tick
end
to move-turtles
ask turtles [ move-to one-of neighbors with [pcolor = green] ]
end
to increase-turtles
make-turtles 1
end
In this case, I have made a new procedure (called make-turtles) that creates as many turtles as you specify, randomly locates them etc. In setup, I call it to make 7 turtles, and then later on just make 1 each time.