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Figure 1 . Graphic output near the beginning of the simulation.
Missing image.

A fat and happy predator beetle

Figure 2 shows the situation some time later when all but 173 of the green beetles had been eaten. Note that the process of eatingthose nutritious beetles has caused the red beetle to gain some weight in Figure 2 .

Figure 2 . Graphic output near the middle of the simulation.
Missing image.

Cleaning up the scraps

Figure 3 shows the situation with only 36 green beetles remaining. Collisions between the beetles is rare at this point, so quite a bit more time willprobably be required before the red beetle can collide with and eat the remaining green beetles.

Figure 3 . Graphic output near the end of the simulation.
Missing image.

What you have learned

In the previous module, you learned how to develop a sprite class from which you can instantiate and animate swarms of sprite objects.

What you will learn

In this module, you will learn how to use the Sprite01 class developed in the earlier module to write a predator/prey simulation program involving thousands of sprites, collision detection, and sound effects.

General background information

Actually, it may have been more appropriate to describe this program in terms of jellyfish, (which eat on the basis of opportunity) instead of beetles, (which are more deliberate in their actions) .

In this program, the red sprite consumes a green sprite only when the two happen to collide by chance. The sprites are notattracted to one another. (That would be a good exercise for a student project - attraction plus collision.)

Two scenarios

A baseball coach is attacked by a swarm of fierce green flying sprites. Fortunately, a red predator sprite comesalong and attacks the green sprites just in time to save the coach.

There are two scenarios that can be simulated by setting the variable named dieOnCollision (see Listing 1 ) to either true or false .

Harmless blue sprites

In one scenario ( dieOnCollision = false) , the vicious green sprites become harmless blue sprites when theycollide with the red sprite. A screen shot of this scenario is shown in Figure 4 .

Figure 4 . Output for the harmless blue sprite scenario.
Missing image.

Green sprites get consumed

In the other scenario ( dieOnCollision = true) , the green sprites are consumed by the red sprite upon contact and are removed fromthe population. This is the scenario shown in Figure 3 .

Get fat and happy

In both scenarios, contact between a green sprite and the red sprite causes the red sprite to increase in size.

If you allow the program to run long enough, the probability is high that all of the green sprites willhave collided with the red sprite and will either have turned blue or will have been consumed.

Discussion and sample code

The class named Sprite01

The class named Sprite01 is shown in Listing 12 . I will explain only those portions of that class that I use in this program thatweren't explained in the earlier module.

The class named Slick0210

Will explain in fragments

A complete listing of the class named Slick0210 is provided in Listing 11 . I will break the code down and explain it in fragments.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Anatomy of a game engine. OpenStax CNX. Feb 07, 2013 Download for free at https://legacy.cnx.org/content/col11489/1.13
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