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

Table of contents

Preface

This module is one in a collection of modules designed to teach you about the anatomy of a game engine.

Although the modules in this collection will concentrate on the Java game library named Slick2D, theconcepts involved and the knowledge that you will gain is applicable to different game engines written in different programming languages as well.

The purpose of this module is to teach you how to use the Sprite01 class developed in an earlier module titled Slick0200: Developing a sprite class to write a predator/prey simulation program involving thousands of sprites along with collision detection and sound effects.

Viewing tip

I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the imagesand listings while you are reading about them.

Figures

  • Figure 1 . Graphic output near the beginning of the simulation.
  • Figure 2 . Graphic output near the middle of the simulation.
  • Figure 3 . Graphic output near the end of the simulation.
  • Figure 4 . Output for the harmless blue sprite scenario.

Listings

  • Listing 1 . Beginning of the class named Slick0210.
  • Listing 2 . Beginning of the init method.
  • Listing 3 . Add a red sprite to the ArrayList object.
  • Listing 4 . Populate the ArrayList object.
  • Listing 5 . Beginning of the update method.
  • Listing 6 . Test for a collision.
  • Listing 7 . The isCollision method of the Sprite01 class.
  • Listing 8 . Process a collision
  • Listing 9 . Remove dead objects from the ArrayList object.
  • Listing 10 . The render method.
  • Listing 11 . Source code for the program named Slick0210.
  • Listing 12 . Source code for the class named Sprite01.

Preview

In an earlier module titled Slick0200: Developing a sprite class , we encountered a baseball coach that had been attacked by a swarm of viciousladybug sprites. I promised you that we would later find a way to save the coach. That time has come.

In this module, I will explain a program that uses the Sprite01 class from the earlier module to produce a simulation program with the outputshown in Figure 1 , Figure 2 , and Figure 3 .

A swarm of insects

Once again, the coach has been attacked by a swarm of 1000 insects. However, in this case, the ladybug sprites have been replaced by vicious green beetlesprites.

A red predator beetle

Fortunately for the coach, a red predator beetle sprite with a taste for green beetles has come along and is gobbling up green beetles as fast as he cancollide with them. (According to the text at the top of Figure 1 , 152 of the 1000 beetles had been consumed by the time the screen shot in Figure 1 was taken.)

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
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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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