Make multiple turtles move all at the same time - parallel-processing

Question

What is the idea of the program: We have watchdogs, sheep, wolves. My sheep are in a ford, the wolves are coming from outside, when entering the ford, watchdogs start moving. Wolves eat sheep, sheep eat grass, watchdogs should scare wolves (not yet implemented).
My problem: All the turtles are moving one at a time.
What I want: I want them to move all at once for every tick.
Code:
breed [sheeps sheep]
breed [wolves wolf]
breed [watchdogs watchdog]
turtles-own [attacked?]
globals [counter
attack
sheep-energy
wolf-energy
grass-counter
lifespan
age
num-attacks
death-countdown]
to set-variables-shapes
set lifespan 365 * 10
set-default-shape sheeps "sheep"
set-default-shape watchdogs "dog"
set-default-shape wolves "wolf"
set sheep-energy 200
set wolf-energy 400
set death-countdown 60
end
to setup
clear-all
set-variables-shapes
create-fold
spawn-animals
reset-ticks
end
to go
ask turtles [
move
]
respawn-grass
ask sheeps [
if ( pcolor != green or pcolor != brown) [
move-to one-of patches with [ pcolor = green or pcolor = brown] ;; If i change this with turn-around (procedure), all sheeps die at once.
]
eat-grass
reproduce
sheep-status
death
show sheep-energy
]
ask wolves [
attack-sheep
if (xcor < 5 and xcor > -14 and ycor < 15 and ycor > -5 ) [
ask watchdogs [
move
if ( pcolor != green or pcolor != brown ) [
move-to one-of patches with [ pcolor = green]
]
]
]
]
tick
end
to create-fold
ask patches [
if (pxcor < 6 and pxcor > -15 and pycor < 16 and pycor > -6)[
set pcolor grey]
if (pxcor < 5 and pxcor > -14 and pycor < 15 and pycor > -5) [
set pcolor green]
]
end
to sheep-status
if (pcolor = brown) [
set sheep-energy sheep-energy - (life-from-food / 2)]
if attacked?
[set color red]
end
to attack-sheep
ask other sheeps in-radius (size)[
set attacked? true
set color red
]
end
to reproduce
if (age = lifespan / 10) [
hatch-sheeps 40 [
hatch-options
]
]
end
to eat-grass
if (pcolor = green)[
set pcolor brown
set sheep-energy sheep-energy + life-from-food
]
end
to respawn-grass
ask patches [
if pcolor = brown [
ifelse grass-counter = 0 [
set pcolor green
set grass-counter grass-respawn-timer
]
[ set grass-counter grass-counter - 1]
]
]
end
to death
sheep-death-timer
if (sheep-energy <= 0)
[die]
;;if (age >= lifespan) [die]
sheep-explode
end
to sheep-death-timer
if (attacked?)[
set death-countdown death-countdown - 1
if (death-countdown <= 30)
[set color black]
if (death-countdown <= 0)
[die]
]
end
to sheep-explode
if (sheep-energy >= 10000)[
hatch-sheeps 20 [
hatch-options]
die
]
end
to hatch-options
set sheep-energy 200
set age 1
set attacked? false
end
to move
fd 1
rt random 90
lt random 90
end
to spawn-animals
create-wolves number-of-wolves [
set color red
setxy 10 -10
set size 1.3
ask patch 10 -10[
Set plabel "Wolves"]
]
create-sheeps number-of-sheeps [
if (pxcor < 5 and pxcor > -14 and pycor < 15 and pycor > -5 )[
setxy -4.5 5]
ask patch -4.5 15 [
Set plabel "Sheeps"]
set color white
set attacked? false
]
create-watchdogs number-of-dogs [
if (pxcor < 5 and pxcor > -14 and pycor < 15 and pycor > -5 )[
setxy -4.5 5
set size 1.3]
set color blue
]
end
to turn-around
fd -1
rt 180
end

Answer 1

There is no such thing as "at the same time" in NetLogo. NetLogo is single-threaded and doesn't support parallel processing.
If all the agents move during the same tick, you can think of that as "at the same time", since it all happened during the course of a tick.
But within a single tick, there is literally no way for agents to move other than one at a time.

Answer 2

You can use
ask-concurrent sheeps [move ]
to make each sheep agent all move at the same time, but it shouldn't matter and they actually don't recommend you use it.