<< Chapter < Page Chapter >> Page >
Learn to use objects of the Slick2D SpriteSheet class and the Animation class to perform more complex spritesheet animation than in the previous module.

Table of contents


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 objects of the SpriteSheet class and the Animation class to perform more complex sprite sheet animations than was the case in the earlier moduletitled Slick0180: Sprite sheet animation, part 1 .

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.



  • Listing 1 . Beginning of the class named Slick0190.
  • Listing 2 . Beginning of the init method.
  • Listing 3 . Begin populating the Animation object.
  • Listing 4 . Add images from the bottom row of
  • Listing 5 . Finish populating the animation object.
  • Listing 6 . Beginning of the update method.
  • Listing 7 . Compute display locations for first 20 frames.
  • Listing 8 . Don't change position for middle group of sprite images
  • Listing 9 . Run from right to left.
  • Listing 10 . The render method.
  • Listing 11 . Source code for Slick0190.


I will present and explain a program that uses both rows of sprites from the sprite sheet shown in Figure 1 . The program uses a SpriteSheet object and an Animation object to produce an animation of a dog playing and answering nature's call. (Note that the overall sprite sheet image is quite small, and the image shown in Figure 1 was enlarged for this presentation.)

Figure 1 . The sprite sheet.
Missing image.

Description of the animation

This animation begins with the sprite running from left to right across the game window. Then the sprite stops on the right side of the game window and answers nature's call. Although it isn't shown here, the sprite turns andfaces left during that process. Then the sprite runs from right to left across the game window. This pattern repeats for as long as the program runs, and is illustrated by the three screen shots that follow.

Sprite running to the right

Figure 2 shows the sprite running from left to right. This is a flipped version of one of the images in the top row of Figure 1 .

Figure 2 . Sprite running to the right.
Missing image.

Sprite answering nature's call

Questions & Answers

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.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
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
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!

Source:  OpenStax, Anatomy of a game engine. OpenStax CNX. Feb 07, 2013 Download for free at https://legacy.cnx.org/content/col11489/1.13
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Anatomy of a game engine' conversation and receive update notifications?