im trying to change the breed of my turtles at hatch but its just giving the mothers breed.
if more code is need please let me know. Thanks!
So, the edit is a more complete code and can be copy pasted. The idea is that if males (machos) find a females (hembra) then they should reproduce, and the new hatch needs to be either male or female. However this is not happenign, theres only females, i chagned the variables in such way that they reproduce alot, meaning that i should see at least one male spawn, but it doesnt.
turtles-own[energia fecundidad vejez]
breed[machos macho]
breed[hembras hembra]
patches-own[alimento]
to setup
resize-world 0 90 0 60
clear-all
ask patches with [
pxcor <= 30 and
pxcor >= min-pxcor and
pycor <= 60 and
pycor >= min-pycor ] [
set pcolor 65
set alimento random 100
]
set-default-shape turtles "cow"
create-machos 3
[ set size 3 ;; easier to see
set color gray
setxy random xcor random ycor
move-to one-of patches with [pcolor = 65]
set heading random 45 + 45
set energia random 500
set fecundidad 0
set vejez 0
]
set-default-shape turtles "cow"
create-hembras 3
[ set size 3 ;; easier to see
set color black
set xcor random 30
set ycor random 60
move-to one-of patches with [pcolor = 65]
set heading random 45 + 45
set energia random 500
set fecundidad 0
set vejez 0
]
reset-ticks
end
to go
ask machos [
if energia >= 60 [reproducirse]
set heading random 360
fd 1
set energia energia - 1
]
ask machos [set fecundidad fecundidad + 1]
ask machos [set vejez vejez + 1]
ask hembras [
if energia >= 50 [reproduccion_hembra]
set heading random 360
fd 1
set energia energia - 1
]
ask hembras [set fecundidad fecundidad + 1]
ask hembras [set vejez vejez + 1]
tick
end
to reproducirse
ask machos[if any? hembras with [fecundidad >= 6][ set heading towards one-of hembras with [fecundidad >= 6]]
]
end
to reproduccion_hembra
ask hembras [ if energia >= 50 [if any? machos in-radius 4 [ set energia energia - 60
hatch 2 [set breed one-of (list machos hembras) rt random-float 360 fd 15
set energia (100 + random 400)
set vejez 0]]]]
end
Related
The orientation (heading) of turtles must be set randomly when wandering but must be limited to a range of 40 degrees (20 to the left and 20 to the right) per step taken, the only exception to this is when avoiding other agents, in this instance a maximum turn of 90 degrees is permitted.
I am new to netlogo. I want these movements with my turtles.
to move-turtles
ask turtles[
if who = ticks[
stop]
let agent-ahead one-of turtles-on patch-ahead 1
ifelse agent-ahead != nobody [
??????
][
rt random 20
lt random 20
]
fd 0.2
]
As stated in the comments you can just use rt and lt with random 45 to achieve what you want.
to setup
clear-all
reset-ticks
crt 5 [set color red]
end
to go
ask turtles[
if who = ticks[
stop]
fd 1
let agent-ahead one-of turtles-on patch-ahead 1
ifelse agent-ahead != nobody [
set color blue
ifelse random 2 = 1 [rt random 45] [lt random 45]
][set color red
rt random 20
lt random 20
]
fd 0.2
]
tick
end
I want to write an evacuation with leader code in net-logo but i have this error (AND expected input to be a TRUE/FALSE but got the number 0 instead.)the error came from function (follow_leader). my project is that i evacuate an environment and evacuate it with the nearest leader from the crowd . the code is not perfect that because iam knew to netlogo .
this is my code
globals[ goal-x goal-y n number leader
percent_of_leader wall
window
door largecircle]
patches-own [path?
obstacle
goal]
turtles-own [direction
fast?
fear?
leader?
is-leader?
follower
other-nearby]
to setup
clear-all
set-default-shape turtles "person"
;create-turtles 50 [ set color yellow ]
;ask turtles [fd random 13 ]
drwa-walls
ask n-of population patches with [ pcolor = black]
[sprout 1
[ set color white
set size 0.9
set shape "person"
set leader? false
;set follower self
if xcor < 9 and ycor > 9 [set heading 0]
if xcor >= 9 and ycor >= -10[set heading -90]
if xcor > -12 and ycor < -10 [set heading 90]
if xcor <= -8 and ycor > -10 and ycor < 0 [set heading 180]
]]
choose-leaders
end
to choose-leaders
ask turtle 6
[
set leader? true
set color yellow
set size 1
set shape "default"
set leader self
set xcor 3
set ycor 10
set heading 0
]
end
to go
move-for
ask turtle 6[move-to-exit1
fd 1 ]
ask turtles with [shape = "person"][
ifelse (xcor < 9 and ycor > 9 ) [follow_leader] [move-to-exit1]
if xcor >= 9 and ycor >= -10 [move-to-exit2]
if xcor > -12 and ycor < -10 [move-to-exit3]
if xcor < -12 and ycor < -10 [move-to-exit3]
if xcor <= -8 and ycor > -10 and ycor < 0 [move-to-exit4]
;avoid obstcao
; avoid_obstacles
;ifelse [pcolor] of patch-ahead 1 = blue
; [ lt random-float 360 ] ;; We see a blue patch in front of us. Turn a random amount.
;[ fd 1 ] ;; Otherwise, it is safe to move forward.
; ifelse not is-patch? patch-ahead 3 or [ pcolor ] of patch-ahead 3 =
;blue or not is-patch? patch-ahead 2 or [ pcolor ] of patch-ahead 2 =
;blue or not is-patch? patch-ahead 1 or [ pcolor ] of patch-ahead 1 =
;blue
;[lt random-float 360 ]
;[fd 1]
; while [patch-ahead 1 = nobody]
;[
;lt random-float 360
;]
;ifelse [pcolor] of patch-ahead 1 = blue
; [ lt random-float 360 ] ;; We see a blue patch in front of us. Turn a random amount.
;[ fd 1 ]
; ifelse not is-patch? patch-ahead 3 or [ pcolor ] of patch-ahead 3 =
;white or not is-patch? patch-ahead 2 or [ pcolor ] of patch-ahead 2 =
;white or not is-patch? patch-ahead 1 or [ pcolor ] of patch-ahead 1 =
;white
; [lt random-float 360 ]
; [fd 1]
;ifelse not is-patch? patch-ahead 3 or [ pcolor ] of patch-ahead 3 =
;green or not is-patch? patch-ahead 2 or [ pcolor ] of patch-ahead 2 =
;green or not is-patch? patch-ahead 1 or [ pcolor ] of patch-ahead 1 =
;green
;[lt random-float 360]
; [fd 1]
]
reset-ticks
tick
end
to rt-random
while [patch-ahead 3 = nobody]
[
rt random 360
]
end
to avoide
ask turtles [
if [pcolor] of patch-ahead 1 = green
[lt random 360 fd 1]
]
end
to avoid_obstacles ;; all obstacles set as green patches
let i 1
while [[pcolor] of patch-ahead i != blue ]
[set i (i + 1) ]
if ([pcolor] of patch-ahead i = blue)
[
ifelse [pcolor] of patch-at-heading-and-distance (heading - 20) i + 1 = blue
[
ifelse [pcolor] of patch-at-heading-and-distance (heading + 20) i + 1 = blue
[
ifelse random 1 = 0
[ rt 360 ]
[ lt 360]
]
[ rt 360 ]
]
[lt 360]
]
end
;;;;;;;;;;;;;;;;;;;;;;;;;;;
to bounce
if [pcolor] of patch-at dx 8 = blue [
set heading (90)
]
if [pcolor] of patch-at 0 dy = blue [
set heading (-90)
]
end
;;;;;;;;;;;;;;;;;;;;;;;
to move-for
ask turtles with [shape = "person"][fd 1]
end
to drwa-walls
draw-exit1
draw-exit2
draw-exit3
draw-exit4
;rows x
ask patches with [pxcor <= 30 and pxcor >= 0 and pycor = -10]
[set pcolor blue]
ask patches with [pxcor >= -30 and pxcor <= 0 and pycor = 9]
[set pcolor blue]
;coilmn
;ask patches with [pycor <= 9 and pycor >= -10 and pxcor = 0]
;[set pcolor green]
;ask patches with [pycor <= 4 and pycor >= 0 and pxcor = 0]
;[set pcolor green]
;circle shape
ask patch -14 -9 [
set largecircle patches in-radius (2)
]
;set color of largecircle patches green
ask largecircle [
set pcolor green
]
ask patch 16 16 [
set largecircle patches in-radius (2)
]
;set color of largecircle patches green
ask largecircle [
set pcolor white
]
end
to draw-exit1
;exits at top of concourse area, where turtles will leave
set goal-x -1
set goal-y -30
ask patch goal-x goal-y [
sprout 1 [ set pcolor red
set shape "square"
]
]
end
to draw-exit2
set goal-x -1
set goal-y 30
ask patch goal-x goal-y [
sprout 1 [ set pcolor red
set shape "square"
]
]
end
to draw-exit3
set goal-x -30
set goal-y -6
ask patch goal-x goal-y [
sprout 1 [ set pcolor red
set shape "square"
]
]
end
to draw-exit4
set goal-x 30
set goal-y 4
ask patch goal-x goal-y [
sprout 1 [ set pcolor red
set shape "square"
]
]
end
;;;;;;;;;;;;;;;;;;;;;;exit goals;;
to move-to-exit1
facexy -1 30
end
to move-to-exit2
facexy 30 4
end
to move-to-exit3
facexy -1 -30
end
to move-to-exit4
facexy -30 -6
end
;;;;;;;;;;;;;;;;;;;;;;;;;;
;to follow-leader
;if not leader? ;; we only want to ask non-leaders
;[let nearby-leaders turtles with [leader? and distance myself < 3] ;; find nearby leaders
;if any? nearby-leaders ;; to avoid 'nobody'-error, check if there are any first
; [ set heading (towards min-one-of nearby-leaders [distance myself]) ]] ;; then face the one closest to myself
; end
;;;;;;;;;;;;;;;;;;;;;;;;;;
to follow_leader
let nearby-leaders turtles with [is-leader? and distance myself < 10] ;; nearby leaders
if any? nearby-leaders[
face min-one-of nearby-leaders [distance myself]
fd 0.5]
end
In the future, please only provide relevant code. For NetLogo, that is usually the procedure that throws the error (or doesn't work correctly etc) and whichever procedure calls it.
In your case, this is the procedure you mentioned:
to follow_leader
let nearby-leaders turtles with [is-leader? and distance myself < 10]
if any? nearby-leaders[
face min-one-of nearby-leaders [distance myself]
fd 0.5]
end
So the and that is throwing the error must be [is-leader? and distance myself < 10] (also, please state which line if you know it). My guess would be that you haven't initialised the variable is-leader? so it is 0 (the default value) instead of either true or false.
If this is the problem, wherever you creates turtles, initialise with set is-leader? false
I'm creating a board game simulation similar to monopoly, where pieces are moving around the board. My turtle acts as the user's game piece and moves around the border of the world. The border is set up in alternating colors. I have a button that generates the number of steps the turtle moves. Those steps are stored as dice-num, a global variable. However, when the turtle lands on the patches before the patch (16 -16) (the bottom right-hand corner of the board) and the number of steps it needs to move exceeds 1, I can't turn the turtle's heading halfway to move up the board. As a result it only moves back to the beginning of the board.
I've tried to treat each case separately:
;if the turtle lands on the patch before the corner
ask turtle 0 [if pycor = min-pycor and pxcor = max-pxcor - 1
[setxy max-pxcor min-pycor
set dice-num dice-num - 1
show dice-num
]
]
;dice-num refers to number of steps the turtle moves
Heres my code so far:
to setup
board
end
to go
dice-roll
end
to board
ask patches [if pxcor = max-pxcor or pycor = max-pycor or pxcor = min-
pxcor or pycor = min-pycor
[set pcolor blue]]
ask patches [if pycor = max-pycor or pycor = min-pycor
[if pxcor mod 2 = 0
[set pcolor orange]]]
ask patches [if pxcor = max-pxcor or pxcor = min-pxcor
[if pycor mod 2 = 0
[set pcolor orange]]]
ask patch min-pxcor min-pycor [set pcolor green]
end
to dice-roll
set dice [1 2 3 4 5 6]
set dice-num one-of dice
user-message (word "You rolled: " dice-num)
ask turtle 0 [
fd dice-num
]
;allows the turtle to turn if it lands on a corner
ask turtle 0 [if ycor = min-pycor and xcor = max-pxcor [set heading 0]
if xcor = max-pxcor and ycor = max-pycor [set heading 270]
if xcor = min-pxcor and ycor = max-pycor [set heading 180]
;add a statement to end game once player rereaches the green patch
]
;if the turtle lands on the patch before the corner
ask turtle 0 [if pycor = min-pycor and pxcor = max-pxcor - 1
[setxy max-pxcor min-pycor
set dice-num dice-num - 1
show dice-num
]
]
end
I expect the output to be the turtle to start moving up the right hand side of the board once it lands on the patch (15 -16) and recieves a dice-num greater than 1. However, when the turtle does land on the patch (15 -16) and the dice-num is greater than 1 it simply moves back to the beginning of the board.
Okay, this was simply too long for comments so I had to make some guesses. I expect the problem was that you were forwarding the full amount of the die roll after checking location. This would mean you have to test all the potential patches that could reach the corner. Instead, it is easier to move one patch and test location before moving the next patch. This is a cleaned up version of your code that implements this move and check process.
to setup
clear-all
board
ask one-of patches with [pcolor = green]
[ sprout 1
[ set color white
set heading 90
forward 1
]
]
end
to go
let die-num dice-roll
ask one-of turtles [ move die-num ]
end
to board
ask patches with [ pxcor = max-pxcor or pxcor = min-pxcor ]
[ set pcolor ifelse-value (pycor mod 2 = 0) [orange][blue] ]
ask patches with [ pycor = max-pycor or pycor = min-pycor ]
[ set pcolor ifelse-value (pxcor mod 2 = 0) [orange][blue] ]
ask patch min-pxcor min-pycor [set pcolor green]
end
to-report dice-roll
let dice-num one-of [1 2 3 4 5 6]
user-message (word "You rolled: " dice-num)
report dice-num
end
to move [#roll]
while [ #roll > 0 ]
[ if pxcor = max-pxcor and pycor = max-pycor [set heading one-of [180 270] ]
if pxcor = max-pxcor and pycor = min-pycor [set heading one-of [0 270] ]
if pxcor = min-pxcor and pycor = max-pycor [set heading one-of [180 90] ]
if pxcor = min-pxcor and pycor = min-pycor [ stop ]
fd 1
set #roll #roll - 1
]
end
The alternative is simply to add the die roll to the current location and see if it goes past. If it does, calculate where you want to get to.
This is for a car to not pass a car in front or in front to the left and to the right. how can i use all commands, how do i link them?
to place-cars-level0 ;creating basic real life driver
;make a random placement of cars
ask n-of (num-of-cars-level0 / 3) patches with [meaning = "road-up"] [
if not any? cars-on patch pxcor (pycor + 1) and not any? cars-here and not any? cars-on patch pxcor (pycor - 1) and not any? patches with [meaning = "crossing"] in-radius 2 [
sprout-cars 1 [
set size 3
set will-turn? "maybe"
set will-stop? "maybe"
set shape "car top"
set politeness basic-politeness + random (101 - basic-politeness)
if random 100 > basic-politeness [set politeness random 21]
set heading 0
let s random 10
if s < 7 [set maxSpeed speed-limit - 15 + random 16]
if s = 7 [set maxSpeed speed-limit - 20 + random 6]
if s > 7 [set maxSpeed speed-limit + random 16]
set speed maxSpeed - random 20
]
]
] ; set the number of cars for the level, size, politness,speed
ask n-of (num-of-cars-level0 / 3) patches with [meaning = "road-down" and count turtles-on neighbors = 0] [
if not any? cars-on patch pxcor (pycor + 1) and not any? cars-here and not any? cars-on patch pxcor (pycor - 1) and not any? patches with [meaning = "crossing"] in-radius 2 [
sprout-cars 1 [
set size 3
set shape "car top"
set politeness basic-politeness + random (101 - basic-politeness)
if random 100 > basic-politeness [set politeness random 21]
set heading 180
set will-turn? "maybe"
set will-stop? "maybe"
let s random 10
if s < 7 [set maxSpeed speed-limit - 15 + random 16]
if s = 7 [set maxSpeed speed-limit - 20 + random 6]
if s > 7 [set maxSpeed speed-limit + random 16]
set speed maxSpeed - random 20
]
]
]
ask n-of (num-of-cars-level0 / 3) patches with [meaning = "road-left" and
count turtles-on neighbors = 0] [
if not any? cars-on patch (pxcor + 1) pycor and not any? cars-here and not
any? cars-on patch (pxcor - 1) pycor and not any? patches with [meaning =
"crossing"] in-radius 2 [
sprout-cars 1 [
set will-turn? "maybe"
set will-stop? "maybe"
set size 3
set shape "car top"
set politeness basic-politeness + random (101 - basic-politeness)
if random 100 > basic-politeness [set politeness random 21]
set heading 270
let s random 10
if s < 7 [set maxSpeed speed-limit - 15 + random 16]
if s = 7 [set maxSpeed speed-limit - 20 + random 6]
if s > 7 [set maxSpeed speed-limit + random 16]
set speed maxSpeed - random 20
]
]
]
while [count cars < num-of-cars-level0] [
ask one-of patches with [meaning = "road-right"] [
if not any? cars-on patch (pxcor + 1) pycor and not any? cars-here and not
any? cars-on patch (pxcor - 1) pycor and not any? patches with [meaning =
"crossing"] in-radius 2 [
sprout-cars 1 [
set will-turn? "maybe"
set will-stop? "maybe"
set size 3
set shape "car top"
set politeness basic-politeness + random (101 - basic-politeness)
if random 100 > basic-politeness [set politeness random 21]
set heading 90
let s random 10
if s < 7 [set maxSpeed speed-limit - 15 + random 16]
if s = 7 [set maxSpeed speed-limit - 20 + random 6]
if s > 7 [set maxSpeed speed-limit + random 16]
set speed maxSpeed - random 20
]
]
]
]
end
in the section above is the code for writing the car placement and below is the speed and control
to control-speed
let car-ahead one-of cars-on patch-ahead 4
ifelse car-ahead = nobody [
ifelse speed < maxSpeed [set speed speed + acceleration] [set speed speed
- deceleration]
]
[
ifelse [speed] of car-ahead = 0 [set speed 0] [
ifelse [speed] of car-ahead >= maxSpeed [
set speed maxSpeed
set speed speed - deceleration
] [
;try to overtake
;ifelse [meaning] of patch-left-and-ahead 90 1 = meaning and not any? turtles-on patch-left-and-ahead 90 1 and [meaning] of patch-left-and-ahead 90 1 != "crossroad"
;and meaning != "crossing" and [meaning] of patch-left-and-ahead 180 1.3 != "crossing" and not any? turtles-on patch-left-and-ahead 169 3
;and not any? turtles-on patch-left-and-ahead 45 1 and not any? turtles-on patch-left-and-ahead 135 1 and not any? turtles-on patch-left-and-ahead 23 2
; and not any? turtles-on patch-left-and-ahead 157 2 and not any? turtles-on patch-left-and-ahead 12 3 and [meaning] of patch-ahead 1 != "crossing" [move-to patch-left-and-ahead 90 1] [
; ifelse [meaning] of patch-right-and-ahead 90 1 = meaning and not any? turtles-on patch-right-and-ahead 90 14 and [meaning] of patch-right-and-ahead 90 1 != "crossroad"
;and meaning != "crossing" and [meaning] of patch-right-and-ahead 180 1.3 != "crossing" and not any? turtles-on patch-right-and-ahead 12 3
;and not any? turtles-on patch-right-and-ahead 45 1 and not any? turtles-on patch-right-and-ahead 135 1 and not any? turtles-on patch-right-and-ahead 23 2
;and not any? turtles-on patch-right-and-ahead 157 2 and not any? turtles-on patch-right-and-ahead 169 3 and [meaning] of patch-ahead 1 != "crossing"[move-to patch-right-and-ahead 90 1] [
;set speed [speed] of car-ahead
;set speed speed - deceleration]
]
]
]
i hope this is more usefulthe image shows the overall simulation
if you can see the image, my aim is to keep one car in each lane rather then three side by side per lane, this is to simulate semi autonomous vehicle lane centering
Okay, instead of doing
let car-ahead one-of cars-on patch-ahead 4
what you probably want to do is create a patch-set of all the three patches that a potential car could be occupying. That's a little difficult without knowing how you have created the lanes, and you need to be careful because the car doing the asking could be in any of three patches too. After creating that patchset, you can simply do what you did before but using the patch-set.
let in-lane (patch-set patch-ahead 4 <other patches you need go here>)
let car-ahead one-of cars-on in-lane
I am new to Netlogo, and have some questions. That would be great if you could help me.
I would like to create some fruit flies moving around a tree that is made up by green patches. Fruit flies are attracted to the tree. They will turn back to the tree if fruit flies move away certain distance (such as 5 grids) from the tree.
In the beginning, they will not stop on the green patches because they have enough energy. As time passed, they will loss their energy. They will find the closest green patch, and stay on it for certain time once their energy reaches 0. They gain energy after that, and they only can do short hops from the bottom branch to the top one (3 hops). Flies will move back to the bottom branch when they are on the top part of tree. I think I need to do a WHILE loop, but I have no idea how to do that. Please look at my codes.
breed [flies fly]
breed [suns sun]
turtles-own [energy]
flies-own [count-down]
to setup
clear-all
setup-suns
setup-flies
setup-patches
reset-ticks
end
to setup-suns
;; Create the sun
set-default-shape suns "sun"
create-suns 1 [
setxy max-pxcor - 3
max-pycor - 3
set color yellow
set size 7
]
end
to setup-flies
set-default-shape flies "bee 2"
create-flies number-fly [ set color white setxy random-xcor random-ycor set count-down 15]
end
to setup-patches
;; Create sky and grass
ask patches
[ set pcolor blue ]
ask patches with [pycor < min-pycor + 2]
[ set pcolor 66 ]
;; Create trunk and branches
ask patches with [ pxcor = -15 and pycor <= 0 ] [ set pcolor brown ]
ask patches with [ pxcor = -15 and pycor < 8 and pycor > 0] [ set pcolor lime ]
ask patches with [ pxcor = pycor - 15 and pycor <= 5 and pycor > 0 ] [ set pcolor lime ]
ask patches with [ pxcor = (- pycor) - 15 and pycor <= 5 and pycor > 0 ] [ set pcolor lime ]
ask patches with [ pxcor = pycor - 8 and pycor <= 2 and pxcor > -15 ] [ set pcolor lime ]
ask patches with [ pxcor = (- pycor) - 22 and pycor <= 2 and pxcor < -15 ] [ set pcolor lime ]
ask patches with [ pxcor = pycor - 1 and pycor <= -1 and pxcor > -15 ] [ set pcolor lime ]
ask patches with [ pxcor = (- pycor) - 29 and pycor <= -1 and pxcor < -15 ] [ set pcolor lime ]
ask patches with [ pxcor = 15 and pycor <= 0 ] [ set pcolor brown ]
ask patches with [ pxcor = 15 and pycor < 8 and pycor > 0] [ set pcolor lime ]
ask patches with [ pxcor = pycor + 15 and pycor <= 5 and pycor > 0 ] [ set pcolor lime ]
ask patches with [ pxcor = (- pycor) + 15 and pycor <= 5 and pycor > 0 ] [ set pcolor lime ]
ask patches with [ pxcor = pycor + 22 and pycor <= 2 and pxcor > 15 ] [ set pcolor lime ]
ask patches with [ pxcor = (- pycor) + 8 and pycor <= 2 and pxcor < 15 ] [ set pcolor lime ]
ask patches with [ pxcor = pycor + 29 and pycor <= -1 and pxcor > 15 ] [ set pcolor lime ]
ask patches with [ pxcor = (- pycor) + 1 and pycor <= -1 and pxcor < 15 ] [ set pcolor lime ]
ask patches with [ pxcor = -26 and pycor = -3 ] [ set pcolor red ]
ask patches with [ pxcor = -10 and pycor = 5 ] [ set pcolor red ]
ask patches with [ pxcor = 21 and pycor = -1 ] [ set pcolor red ]
end
to go
move-flies
tick
end
to move-flies
ask flies [
set energy 6
ifelse energy > 10 [
;rt random 50 lt random 50 jump random-float 1 ;
let nearest-leaf min-one-of (patches with [pcolor = lime] ) [distance myself] ; Find the closest leaf within 5 grids - long range search.
if is-patch? nearest-leaf [ ; If it is a leaf, and flies will be attracted to the leaf.
face nearest-leaf
;set heading 45
;fd distance nearest-leaf
rt random 50 lt random 50 jump random-float 5 ; Protential resources make flies move actively (fast movement).
;move-to nearest-leaf ;
]
]
[
ifelse pcolor != lime
[ rt random 50 lt random 50 jump random-float 1 ; Initialization - flies fly around to search their resources.
continue]
[ stay ]
]
]
end
to continue
let nearest-leaf min-one-of (patches in-radius 1 with [pcolor = lime] ) [distance myself] ; Find the closest leaf within 2 grids - short hops.
ifelse is-patch? nearest-leaf [ ; If it is a leaf, and flies will be attracted to the leaf.
face nearest-leaf
fd random distance nearest-leaf
;ask patches in-radius 1 [set pcolor red]
;rt random 50 lt random 50 jump random-float 5 ; Protential resources make flies move actively (fast movement).
;move-to nearest-leaf ;
]
[
let turn-back min-one-of (patches with [pcolor = lime] ) [distance myself] ;
;set heading 180
face turn-back
jump random-float 5 ]
move-up ;Flies tend to move up through all branches by short hops. Need a while loop.
; Move down if they reach the top of tree
let canopy patch-at-heading-and-distance 0 1
let canopy-left patch-left-and-ahead 45 1
let canopy-right patch-right-and-ahead 45 1
if canopy != lime or canopy-left != lime or canopy-right != lime
[
move-down
]
end
to move-up
ask flies [
set heading one-of [0 30 -30]
]
end
to move-down
ask flies [
set heading one-of [180 120 -120]
]
end
to stay
set count-down count-down - 1 ;;decrement timer
set label count-down
if count-down = 0
[
rt random 50 lt random 50 jump random-float 1
set label ""
reset-count-down ;;it's another procedure
]
end
to reset-count-down
set count-down 30
end
I am sorry if you are confused by my codes. I appreciate your help. Thanks.
Kind Regards,
Ming
From your description, I think you almost certainly don't want a while loop. In a NetLogo model's go procedure, you're only specifying what happens in a single tick. So you would only use while if need it to express something that happens all in a single instant, not a process that unfolds over multiple ticks.
(Agree with Frank this is too much code to post to have a good chance of getting help. It would take quite a while for me to read and study this much code, let alone try to help you with it. In this answer I've tried to extract and address a single aspect.)