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Figure 3 . The disease has receded after killing many in the population.
Missing image.

Properties that control the spread

Later on, I will explain the properties that control the spread of the disease. Some sets of property values produce results similar to those shownabove where the disease gains a foothold, spreads for awhile killing many sprites, and then recedeswithout killing the entire population.

Other sets of property values end up with all of the sprites having died.

Still other sets of property values end up with the disease being unable to gain a foothold and spread beyond just a fewindividual sprites.

What you have learned

You have learned how to use a basic Slick2D game engine to create simulations involving thousands of sprites, collision detection, and sound.

What you will learn

In this module, you will learn how to use what you have previously learned to write a relatively complex (but somewhat simplified) simulation of a real-world pandemic.

If you were to study the characteristic of pandemics, you could probably upgrade this program to produce a better model of a pandemic. For example,an interesting student project would be to allow healthy sprites to reproduce when they come in contact based on a random probability function.This would allow the population to be growing at the same time that it is dying off due to the disease. Of course, it may then be necessary to dealwith the effects of a population explosion.

General background information

This program simulates the spread of a fatal communicable disease within a population.

A single infected sprite is introduced into a population of sprites. The disease is spread by physical contact between a healthy sprite and an infected sprite.

You can watch as the disease either spreads and kills the entire population or spreads for awhile, then recedes anddies out.

Infected sprites are colored red. Healthy sprites are colored green. A sound is emitted (simply to demonstrate how to emit sounds) each time there is contact between an infected sprite and a healthy sprite.

The final outcome

The final outcome is determined both by chance and by several factors including:

  • The life expectancy of an infected sprite.
  • The probability of infection due to contact with an infected sprite.
  • The degree of mobility of both infected and healthy sprites.
  • The population density of sprites.

The actual values for the first three factors for each individual are determined by a maximum value multipliedby a random number between 0 and 1.0.


Instance variables are provided for all four of these factors. You can modify the values and recompile the program toexperiment with different combinations of the factors.

A good exercise for a student would be to create a GUI that allows the factors to be entered more easily without having to recompilethe program for purposes of experimentation.

Discussion and sample code

The class named Sprite01

The class named Sprite01 is shown in Listing 9 . There is nothing new in Listing 9 that I haven't explained in earlier modules.

Questions & Answers

Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
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.
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
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I'm interested in nanotube
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what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
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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