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Instance variables

Listing 1 declares a number of instance variables. The purpose of these variables should become clear based on their names andtheir usage that I will discuss later.

The constructor and the main method

There is nothing new in the constructor and the main method in Listing 1 .

The init method

The init method begins in Listing 2 . The embedded comments should provide a sufficient explanation of the code in Listing 2 .

Listing 2 . Beginning of the init method.
public void init(GameContainer gc) throws SlickException {spriteSheetImage = new Image("Slick0180a1.png"); //Enlarge the sprite sheet.Image temp = spriteSheetImage.getScaledCopy(580,224); spriteSheetImage = temp;//Get, save, and display the width and the height // of the sprite sheet.spriteSheetWidth = spriteSheetImage.getWidth(); spriteSheetHeight = spriteSheetImage.getHeight();System.out.println( "spriteSheetWidth: " + spriteSheetWidth);System.out.println( "spriteSheetHeight: " + spriteSheetHeight);//Compute the width and height of the individual// sprite images. spriteWidth = (int)(spriteSheetWidth/spritesPerRow);spriteHeight = (int)(spriteSheetHeight/spritesPerColumn);

Create a SpriteSheet object

Listing 3 creates a new SpriteSheet object based on the sprite sheet image along with the width and height of the individual sprites.

Listing 3 . Create a SpriteSheet object.
//Instantiate a new Spritesheet object based on the // width and height of the tiles.spriteSheet = new SpriteSheet(spriteSheetImage, spriteWidth,spriteHeight);

Create a new Animation object

Listing 4 creates a new Animation object that will process the SpriteSheet object instantiated in Listing 3 .

Listing 4 . Create a new Animation object.
//Create a new animation based on a selection of // sprites from the sprite sheet.animation = new Animation(spriteSheet, 0,//first column0,//first row 4,//last column0,//last row true,//horizontalduration,//display time true//autoupdate);

Constructor parameters

Obviously, the first parameter to the constructor for the Animation class specifies the SpriteSheet object.

The second and third parameters specify that the first image in the sequence should be the top-left image in Figure 1 .

The fourth and fifth parameters specify that the last image in the sequence should be the top-right image in Figure 1 .

The true value for the sixth parameter specifies that the images should be scanned horizontally.

The duration value in the seventh parameter specifies that each image should be displayed for 200 milliseconds.

The true value for the last parameter specifies that the display should continue cycling through the images until the animation is stopped.

Set frame rate and display location

The code is Listing 5 sets the frame rate and specifies the drawing location. The drawing location is the locationwithin the game window where the sprite will be displayed.

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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