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Figure 3 shows the sprite answering nature's call. This is a flipped version of one of images from the bottom row of Figure 1 .

Figure 3 . Sprite answering nature's call.
Missing image.

Sprite running to the left

Figure 4 shows the sprite running from right to left. This is one of the images from the top row of Figure 1 .

Figure 4 . Sprite running to the left.
Missing image.

What you have learned

In the previous module , you learned how to use objects of the SpriteSheet class and the Animation class to perform simple sprite sheet animation.

What you will learn

In this module, you will learn how to use objects of the SpriteSheet class and the Animation class to perform more complex sprite sheet animations than was in the previous module.

General background information

The SpriteSheet class

There isn't much that's new in this module regarding the SpriteSheet class. The program instantiates and populates a SpriteSheet object and used the images stored in that object to populate an Animation object.

The SpriteSheet object is used in a different way than was the case in the previous module, but that will be explained in conjunction withpopulating the Animation object.

The Animation class

An Animation object is populated in a significantly different way in this module than in the previous module.

In the previous module, a SpriteSheet object's reference was passed to the Animation constructor along with a specification of the images to be extracted from the sprite sheet and the amount of time thateach image should be displayed. The Animation constructor extracted the images from the sprite sheet and populated the new Animation object automatically. Among other restrictions, it was necessary that each image bedisplayed for the same amount of time.

One image at a time

In this module, an empty Animation object is instantiated and then populated one image at a time. (Of course, loops are used to make that process easier.) Among other things, this makes it possible to:

  • Use multiple copies of the individual images on the sprite sheet
  • Use flipped versions of the images on the sprite sheet
  • Specify different display times for the different images on the sprite sheet

Different animation rates

For example, the display times for the images from the bottom row of Figure 1 are four times greater than the display times for the images from the top row. Thus, the animation slows down when the spritestops to answer nature's call on the right side of the game window then speeds up again when the sprite starts running from right to left.

Discussion and sample code

The class named Slick0190

Will discuss in fragments

A complete listing of the program named Slick0190 is provided in Listing 11 . I will break the program down and discuss it in fragments.

Listing 1 shows the beginning of the class named Slick0190 down through the main method. There is nothing in Listing 1 that should require an explanation beyond the embedded comments. However, it is worth noting thatunlike the previous module, Listing 1 instantiates a new empty object of the class Animation and saves its reference in the instance variable named animation . This object will be populated with images by the init method later.

Questions & Answers

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
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
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
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
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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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