How to make a turtle run through a particular line - netlogo

Question

I am creating an urban environment that is robust from interruption for my university project.
The problem I am facing is that I am not sure how to make each turtle follow a specific network line. The black line represents the electricity cable and the blue line represent the underground water pipe. I am not sure how to create a turtle to follow the network line to be consumed by the house or the big buildings. Also, please bear in mind that I only just started learning Netlogo so any improvements in the coding itself are much appreciated.
This is the current code for the urban environment model. Also, is it even possible for a turtle to follow a specific line?
breed [ houses house ]
breed [ big-buildings big-building ]
breed [ commercial-buildings commercial-building ]
breed [ water-pumping-stations water-pumping-station ]
breed [ sewage-plant-stations sewage-plant-station ]
breed [ electricity-power-stations electricity-power-station ]
breed [ overhead-cable-stations overhead-cable-station ]
to setup
clear-all
reset-ticks
setup-landscape
setup-network
if (show-grid = true ) [
draw-grid ;for the switch to hide or show the gride
]
if (show-eletricity = true) [
draw-electricity ; for the swtich to hide or show the gride
]
if (show-sewage = true) [
draw-sewage ; for the swtich to hide or show the gride
]
if (show-water = true) [
draw-water ; for the swtich to hide or show the gride
]
end
to setup-network
draw-networks ; designing lines and colour coordinate them to show what each network are.
end
to draw-networks ; list of networks that has been drawn.
draw-electricity
draw-sewage
draw-water
end
to draw-water
create-turtles 1 [ ;FOR THE HOUSE AND BIG BUILDINGS
setxy 37 -18
set heading 90
set color blue
set pen-size 2.5
pen-down
left 180
fd 10
right 90
fd 9
right 90
fd 3
right 90
fd 3
back 6
fd 3
right 90
fd 7
right 90
fd 3
back 6
fd 3
left 90
fd 7
right 90
fd 3
back 6
fd 3
left 90
fd 3
right 90
fd 19
right 90
fd 3
right 90
fd 4
back 9
fd 5
left 90
fd 4
right 90
fd 8
back 8
left 90
fd 3
right 90
fd 4
back 9
fd 5
left 90
fd 4
right 90
fd 8
back 8
left 90
fd 3
right 90
fd 4
back 9
die
]
create-turtles 1 [ ;FOR THE COMMERICAL BUILDING
setxy -37 -18
set heading 90
set color blue
set pen-size 2.5
pen-down
left 90
fd 14
right 90
fd 12
right 90
fd 3
back 6
fd 3
left 90
fd 10
left 90
fd 3
back 6
fd 3
right 90
fd 10
right 90
fd 3
back 6
fd 3
die
]
end
to draw-sewage
create-turtles 1 [ ;FOR HOUSE AND BIG BUILDINGS
setxy 38 -1
set heading 90
set color green
set pen-size 2.5
pen-down
right 90
fd 8
right 90
fd 8
right 90
fd 3
back 6
fd 3
left 90
fd 7
right 90
fd 3
back 6
fd 3
left 90
fd 7
right 90
fd 3
back 6
fd 3
left 90
fd 3
right 90
fd 19
right 90
fd 3
right 90
fd 4
back 9
fd 5
left 90
fd 4
right 90
fd 8
back 8
left 90
fd 3
right 90
fd 4
back 9
fd 5
left 90
fd 4
right 90
fd 8
back 8
left 90
fd 3
right 90
fd 4
back 9
die
]
create-turtles 1 [ ;FOR COMMERICAL BUILDING
setxy -18 -18
set heading 90
set color green
set pen-size 2.5
pen-down
right 180
back 7
right 90
fd 7
right 90
fd 9
left 90
fd 7
left 90
fd 3
right 90
fd 3
back 6
fd 3
left 90
fd 10
right 90
fd 3
back 6
fd 3
left 90
fd 10
right 90
fd 3
back 6
fd 3
die
]
end
to draw-electricity
;HOUSE
create-turtles 1 [ ;house 1
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
fd 54
right 90
fd 3
die
]
create-turtles 1 [ ;house 2
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 61
right 90
fd 3
die
]
create-turtles 1 [ ; house 3
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 68
right 90
fd 3
die
]
create-turtles 1 [ ; house 4
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 8
right 90
fd 2
left -90
back 4
die
]
create-turtles 1 [ ; house 5
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 8
right 90
fd 9
left -90
back 4
die
]
create-turtles 1 [ ; house 6
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 8
right 90
fd 16
left -90
back 4
die
]
create-turtles 1 [ ; house 7
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 18
left 90
back 5
right 90
back 2
die
]
create-turtles 1 [ ; house 8
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 18
left 90
back 12
right 90
back 2
die
]
; BIG BUILDINGS ROW
create-turtles 1 [ ; building 1
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 8
right 90
fd 19
left -90
back 19
right 90
fd 3
right 90
back 3
die
]
create-turtles 1 [ ; building 2
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 8
right 90
fd 19
left -90
back 19
right 90
fd 10
right 90
back 3
die
]
create-turtles 1 [ ; building 3
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 8
right 90
fd 19
left -90
back 19
right 90
fd 17
right 90
back 3
die
]
create-turtles 1 [ ; building 4
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 8
right 90
fd 19
left -90
back 19
right 90
fd 3
right 90
fd 3
die
]
create-turtles 1 [ ; building 5
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 8
right 90
fd 19
left -90
back 19
right 90
fd 10
right 90
fd 3
die
]
create-turtles 1 [ ; building 6
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
forward 70
right 90
fd 8
right 90
fd 19
left -90
back 19
right 90
fd 17
right 90
fd 3
die
]
;COMMERICAL BUILDINGS
create-turtles 1 [ ;COMMERICAL BUILDINGS 1
setxy -38 18
set heading 90
set color black
set pen-size 2.5
pen-down
right 90
fd 22
left 90
fd 33
die
]
create-turtles 1 [ ;COMMERICAL BUILDINGS 2
setxy -25 -4
set heading 90
set color black
set pen-size 2.5
pen-down
right 90
fd 2
die
]
create-turtles 1 [ ;COMMERICAL BUILDINGS 3
setxy -25 -4
set heading 90
set color black
set pen-size 2.5
pen-down
right 90
back 3
die
]
create-turtles 1 [ ;COMMERICAL BUILDINGS 4
setxy -15 -4
set heading 90
set color black
set pen-size 2.5
pen-down
right 90
fd 2
die
]
create-turtles 1 [ ;COMMERICAL BUILDINGS 5
setxy -15 -4
set heading 90
set color black
set pen-size 2.5
pen-down
right 90
back 3
die
]
create-turtles 1 [ ;COMMERICAL BUILDINGS 6
setxy -5 -4
set heading 90
set color black
set pen-size 2.5
pen-down
right 90
fd 2
die
]
create-turtles 1 [ ;COMMERICAL BUILDINGS 7
setxy -5 -4
set heading 90
set color black
set pen-size 2.5
pen-down
right 90
back 3
die
]
create-turtles 1 [ ;COMMERICAL BUILDINGS 8
setxy -25 -4
set heading 90
set color black
set pen-size 2.5
pen-down
right 90
fd 2
die
]
end
to setup-landscape
ask patches [
set pcolor pink
]
draw-entities
end
to draw-entities
draw-houses
draw-big-buildings
draw-water-pumping-stations
draw-sewage-plant-stations
draw-electricity-power-stations
draw-commercial-buildings
end
to draw-houses ; setting house as stationary not going to move at all
ask patch 30 15 [ sprout-houses 1 ]
ask patch 23 15 [ sprout-houses 1 ]
ask patch 16 15 [ sprout-houses 1 ]
ask patch 30 6 [ sprout-houses 1 ]
ask patch 23 6 [ sprout-houses 1 ]
ask patch 16 6 [ sprout-houses 1 ]
ask patch 20 2 [ sprout-houses 1 ]
ask patch 27 2 [ sprout-houses 1 ]
ask houses [
set size 1.5
set shape "house"
set color red
]
end
to draw-big-buildings ; setting big buildings as stationary not going to move at all
ask patch 30 -6 [ sprout-big-buildings 2 ]
ask patch 23 -6 [ sprout-big-buildings 2 ]
ask patch 16 -6 [ sprout-big-buildings 2 ]
ask patch 30 -12 [ sprout-big-buildings 3 ]
ask patch 23 -12 [ sprout-big-buildings 3 ]
ask patch 16 -12 [ sprout-big-buildings 3 ]
ask big-buildings [
set size 2
set shape "bigbuildings"
set color white
]
end
to draw-water-pumping-stations ; setting water pumping statoins as stationary not going to move at all
ask patch 37 -18 [ sprout-water-pumping-stations 3 ]
ask patch -37 -18 [ sprout-water-pumping-stations 3 ] ;FOR THE COMMERICAL BUILDINGS
ask water-pumping-stations [
set size 2
set shape "producewater"
set color blue
]
end
to draw-sewage-plant-stations ; setting sewage plant station as stationary not going to move at all
ask patch 38 -1 [ sprout-sewage-plant-stations 4 ]
ask patch -18 -18 [sprout-sewage-plant-stations 4] ;FOR THE COMMERICAL BUILDING
ask sewage-plant-stations [
set size 2
set shape "sewage"
set color green
]
end
to draw-electricity-power-stations ; setting eletricity power station as stationary not going to move at all
ask patch -38 18 [ sprout-electricity-power-stations 5]
ask electricity-power-stations [
set size 2
set shape "electrcitystation"
set color 44
]
end
to draw-commercial-buildings ; setting commerical buildings as stationary not going to move at all
ask patch -5 -1 [ sprout-commercial-buildings 7 ]
ask patch -5 -6 [ sprout-commercial-buildings 7 ]
ask patch -15 -6 [ sprout-commercial-buildings 7 ]
ask patch -15 -1 [ sprout-commercial-buildings 7 ]
ask patch -25 -1 [ sprout-commercial-buildings 7 ]
ask patch -25 -6 [ sprout-commercial-buildings 7 ]
ask commercial-buildings [
set size 2
set shape "commercialbuilding"
set color orange
]
end
to draw-grid ; allows me to pinpoint where each turtle is properly ( helps me to debug the code)
ask patches [
sprout 1 [
set heading 0
set color black
set pen-size 1
forward 3
right 90
pen-down
repeat 8 [
forward 3 right 90 fd 3
]
die
]
]
end
to go
end
This is the image of what my model currently looks like and NetLogo whole image is what I imagine how my model will work as I haven't started doing the go procedure.
The model can be found in the following GitHub repo:
https://github.com/omoaka1738/Netlogo-help.git

Answer 1

So, my comment above aside, drawing the network so it can be traversed is a whole other thing. You don't want to get bogged down in having to make a path-seeking model, on top of what you are already trying to do. So it's important to not just draw the lines, but give them information to make using them easier. This is why you've really got to think about your model, all its parts, how they interact (not in terms of netlogo, but just like, in terms of if it was a game, what are the rules?)
First question:
Do we really need to model the “physical” location of the wire/pipe or do we just need to know what connects to what?
Maybe we are modeling the effect of breaks in the physical lines/pipes, so we do ned to model the pipes and lines.
Next: do we really need to model each step that the water/elec takes in the pipe? That’s not how electricity works. It’s only sort of how water works. That’s mostly about pressure.
Instead, we can “cook” or “preload” the wires and pipes with information about where the stuff is coming from, and where it goes. This lets the model know what it needs to know without us doing extra work while the model is running.
So:
First: instead of PD and FD etc, we can use turtles to be the pipes and wires, or possibly, just the terminals, access points and joints. If we need to, the pipes too.
Each member will know:
what services it provides, like water or electric
Whether it is a terminal, in-line access point, joint, or pipe (if we need to model pipes)
An indicator of which connection leads to the source, created while we create the network.
Note that we can also "pre-calculate" the path from the source to any destination by recording the steps to trace backwards from the destination to the source, then reversing the steps. Store this map in the destination.
The more I think about it, the more this looks like a job for linked turtles. Then you don't need to mark or create turtles for the "pipes" just for the terminals, bends, joints, and access points.
So consider:
a breed of turtle, maybe called [nodes node].
This is common jargon for networks (aka graphs), they have nodes and edges.
add a breed of directed links called [ edges edge](common jargon again)
nodes will own:
service -- will be "w" or "e" (for exampleor watever you want)
Source — contains the turtle that is at the source
Input-direction (or something) l—-contains the node that is in the direction towards the source
maybe some other stuff.
We can reuse some of your line-drawing code, and maybe make it more consider and easier to copy and change.
POSTING THIS ANSWER FOR NOW
will com back and add on letter
Add some comments to this answer to give more info about what the model is doing.