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The overridden LoadContent method

The overridden LoadContent method is shown in Listing 3 .

Listing 3 . The overridden LoadContent method.

protected override void LoadContent() { //Create a new SpriteBatch object, which can be// used to draw textures. spriteBatch = new SpriteBatch(GraphicsDevice);//Load the image myTexture = Content.Load<Texture2D>("dogcropped"); //Initialize instance variablesspriteCol = 0; spriteRow = 0;frameWidth = myTexture.Width / spriteColLim; frameHeight = myTexture.Height / spriteRowLim;msPerFrame = fast; spriteEffect = flipEffect;winWidth = Window.ClientBounds.Width; }//end LoadContent

Load the image

The code to load the image, which is a sprite sheet, is the same as code that I have explained in earlier modules.

Initialization of variables

Some of the instance variables in Listing 1 were initialized when they were declared. Others couldn't be initialized when they were declared for a varietyof reasons.

Some could have been initialized in the constructor and others couldn't because the required information wasn't yet available.

I elected to initialize variables in the LoadContent method. By the time the LoadContent method executes, all of the information necessary to initialize the variables is available.

spriteCol and spriteRow

The variables named spriteCol and spriteRow will be used as counters to keep track of and to specify the column and row fora particular sprite image as shown in Figure 1 . The columns are numbered from 0 through 4 (five columns) and the rows are numbered from 0 through 1 (two rows).

frameWidth and frameHeight

These two variables specify the width and the height of an individual sprite image (see Figure 1 ). The width and the height of the individual sprite images are computed by dividing the total width of the image loaded in Listing 3 by the number of sprite images in a row and by dividing the total height of the imageloaded in Listing 3 by the number of sprite images in a column.

msPerFrame

Listing 1 declares two variables named fast and slow and initializes their values to 175 milliseconds and 525 millisecondsrespectively. These two values are used to switch the animation frame rate between a fast rate and a slow rate by assigning one or the other value to thevariable named msPerFrame . The fast value is assigned to msPerFrame in Listing 3 to specify a fast frame rate when the animation begins.

spriteEffect

The SpriteEffects enumeration lists the following effectsthat can be applied to a sprite when it is drawn:

  • FlipHorizontally
  • FlipVertically
  • None

The images in the raw sprite sheet shown in Figure 1 are all facing to the left. The FlipHorizontally enumeration value will be used to cause the images to face to the right when the dog is moving from left to rightacross the game window. The None enumeration value will be used to cause the images to face to the left (the default) when the dog is movingfrom right to left across the game window.

This is accomplished with the variables named spriteEffect , flipEffect , and noEffect . The value of spriteEffect is initialized to flipEffect in Listing 3 because the dog starts off moving from left to right.

Questions & Answers

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
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
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
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