Flow Chart and Diagram

breed [cats cat] ; creating the breed of cats
breed [mice mouse] ; creating the breed of mice

The opening statement is to ‘breed.’ ‘Mice’ and ‘mouses’ sets out the program language, of having both a family and an individual. These can be of any names, if the breeds are other than turtles.

Individuals that are close to one another are defined and named as the following. When starting off the agents, the agents will then need to be defined further, by a direction for example.

mice-own [closest-mouse danger-cat cat-alert killdis] ; variable assigned to the mice
cats-own [chase-mouse runawaya] ; variable assigned to the cats
globals© ; variable
to setup ; setup the agents
create-cats howcats ; creating the agents and assigning a variable to the number
create-mice howmice ; creating the agents and assigning a variable to the number
sk cats[
setxy random-xcor random-ycor ; sets a random starting point for each agent
set shape “circle” ; sets the shape of each of the agents
set size .5 ; sets the size of the agents
set color red ; sets the colour of the agents
]
ask mice[
setxy random-xcor random-ycor ; sets a random starting point for each agent
set shape “circle” ; sets the shape of each of the agents
set size 1 ; sets the size of the agents
set color grey ; sets the colour of the agentsv
]
_set© ; sets veriable
end
to wiggle
let flipcoin random 10 ; local variable with a random starting number from 1 to 10
let choice 0 ; local variable with a starting number of 0
ifelse flipcoin > 5 ; this command allows for an action to be met if the criteria is met otherwise the second action is taken.
; action to be taken if the criteria is met
; action to be taken if the criteria is not met
ask mice [
set heading heading + choice ; sets the heading for the agents based on the current heading and the addition of the dir variables value
fd 0.1 ; ask the agents to move forward one step at a time
]
end
to repel
ask mice[
set closest-mouse min-one-of other mice [distance myself] ; sets the veriable closest-mouse to the distance of the closest mouse _around its self
if closest-mouse != nobody [ ; if statment asking mice to stop repeling eachother if there are no mice
face closest-mouse ; turns the agent to face its closest-mouse
bk 0.1 ; asks the agent to move back 1 step away from the closest agent
]]
end
to chase
ask cats[
set chase-mouse min-one-of other mice [distance myself] ; sets the veriable chase-mouse to the distance of the closest mouse around its self
if chase-mouse != nobody [ ; if statment asking cats to stop chasing mice if there are no mice
face chase-mouse ; turns the agent to face its chase-mouse
fd 0.1 ; asks the agent to move forward 1 step away from the closest agent
]]
end
to flee
ask mice[
set danger-cat min-one-of other cats [distance myself] ; sets the danger-cat myself to the distance of the closest cat around its self
if danger-cat != Nobody [ ; if statement asking mice to stop repeling eachother if there are no mice

’nobody’ is a special value used in Netlogo used to indicate the absence of a turtle or patch. The brackets tells the turtle the command to run. ‘set heading towards closest-mouses’ is another command that uses a reporter. There is no space in the words ‘closest-mouses’ as the hyphen combines the two words into a single name.
face danger-cat ; turns the agent to face its danger-cat
bk 0.2 ; asks the agent to move back 0.2 step away from the closest agent
]]
end

Manipulating the Code

breed [cats cat] ;; [family one-member]
breed [mice mouse]
mice-own [closest-mouse danger-cat] ;; variable for repet _f_unction
cats-own [cat-chases-mouse]

;;—————————————————————————————————————-

to setup
ca
create-cats howmanycats
create-mice howmanymice
ask cats [ ;; setting up the cats
setxy random-xcor random-ycor
set shape “line”
set size 1
set color white
]

ask mice [ ;; setting up the mice
setxy random-xcor random-ycor
set shape “circle”
set size .5
set color random 45
]
;;ask patches [
;;set pcolor white
;;]
end
;;—————————————————————————————————————-
to wiggle
let flipcoin random 10 ;; local variable
let choice 1
ask mice [
ifelse flipcoin < 360
_
[set choice 1 ]
_set heading heading + choice
fd 1
pd
]
end
;;—————————————————————————————————————-
to repel
ask mice [
_set closest-mouse min-one-of other mice [distance myself]
face closest-mouse;; or set heading towards closest-mouse
bk 1
pd
]
end_
;;—————————————————————————————————————-
to chase
ask cats [
set cat-chases-mouse min-one-of other mice [distance myself];; 
face cat-chases-mouse
fd 1
pd
]
end
;;—————————————————————————————————————
to flee
ask mice [
set danger-cat min-one-of other cats [distance myself]
face danger-cat
bk 1
pd
]
end
;;—————————————————————————————————————
to capture
export-view try
end

Fin…

The model has 10 shiftbrites connected in an array , and 4 digital micro servos powered with 2 arduino boards.

One arduino board is  for the 4 servos, and the other one for the 10 shiftbrites.

The motion of the servos is controlled with the mouse via processing.

Photos

Click to view slideshow.

The animation consists of 4 sets of particle groups and each group has a set of 4 particles.

On each particle within the group there is a linear emitter. The particles have a timeline of 1000 frames applied for the movement. Also for the movement each group of 4 particles has a Newton Field applied to them with a radial field for the emmited particles.

There for the animation starts with 16 particles and ends with the 16 particles having emmited thousands of other smaller particles.

Further set Attributes responsible for the movement and multiplying of the particles are rotations and moved positions on the X-Y-Z Axis of the plane.

Important part in this animation is the Magnitude ( set at 10) and the Attenuation (set at 1.63) attributes throughout the animation.

Starting point position for the particle groups is (0.4, 0.-4, 4,0, -4,0) at the plane.

There is also an extra plane in transparent shade which has 2 turbulence fields attached. The turbulence fileds have minimal magnitude and attenuation factor for it’s slow deformation within the timeline of 1000 frames.

Rendered stills within the 1000 frames

At  063 frames

At 153 frames

At 138 frames

                                                                                                                                                                                                                                                 At 268 frames

At 576  frames

                                                                                                                                                                                                                                               At 669 frames

                                                                                                                                                                                                                                                   At 771 frames

At 856 frames

At 941 frames

Table

The table below shows the animation objects (particles, newton field etc) at the start of the animation [timeline at 0 frames] their initial position and their final position at the end of the animation [timeline at 1000 frames].