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You should have no difficulty matching up the code in Listing 5 with the verbal description given above.

Make a cleanup pass

The code in Listing 6 uses an Iterator to make the cleanup pass described above.

Listing 6 . Make a cleanup pass.
//Make a cleanup pass through the ArrayList object Iterator<Sprite01>iterB = sprites.iterator();while(iterB.hasNext()){ Sprite01 theSprite = iterB.next();//Cause a percentage of the exposed objects to// contract the disease. Clear the others. if((theSprite.getExposed() == true)&&(random.nextFloat()<probabilityOfInfection)){ theSprite.setImage(redBallImage);theSprite.setLife((int)( random.nextFloat()*infectedSpriteLife));theSprite.setExposed(false); }else{//Eliminate the effects of the exposure theSprite.setExposed(false);}//end else//Remove dead sprites if(theSprite.getLife()<= 0){ iterB.remove();}//end if }//end while loop}//end outer for loop}//end update

Once again, you should have no difficulty matching up the code in Listing 6 with the verbal description given above.

The render method

The render method is shown in Listing 7 . There is nothing new in Listing 7 .

Listing 7 . The render method.
public void render(GameContainer gc, Graphics g) throws SlickException{//set the drawing mode to honor transparent pixels g.setDrawMode(g.MODE_NORMAL);//Draw the background to erase the previous picture. background.draw(0,0);//Draw every sprite in the ArrayList object. for(int cnt = 0;cnt<sprites.size();cnt++){ sprites.get(cnt).draw();}//end for loop//Display the number of sprites remaining. g.drawString("Sprites remaining: " + (sprites.size()),100f,10f); }//end render}//end class Slick0220

Run the program

I encourage you to copy the code from Listing 8 and Listing 9 . Compile the code and execute it,making changes, and observing the results of your changes. Make certain that you can explain why your changes behave as they do.

Summary

In this module, you learned how to write a program that simulates the spread of a fatal communicable disease within a population.

Conclusion

Although I may come back and add more modules later, for now, this will be the final module in this collection.

The objective of the collection was to explain the anatomy of a game engine. I believe I have accomplished that objective and have also providedsample programs to illustrate the use of the game engine.

It is worth pointing out that BasicGame is not the only game engine architecture available with Slick2D. The Slick2D Wiki refers to BasicGame as a game container and indicates that several others are available including:

  • Applet Game Container
  • ApplicationGDXContainer/AndroidGDXContainer

The documentation also describes a class named StateBasedGame , which provides a different anatomy than BasicGame . Bucky Roberts provides a series of video tutorials on state based games using Slick2D at (External Link)

Miscellaneous

This section contains a variety of miscellaneous information.

Questions & Answers

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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket 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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