<< Chapter < Page
  Xna game studio     Page 4 / 12
Chapter >> Page >

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

find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
I know this work
salma
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
I rally confuse this number And equations too I need exactly help
salma
But this is not salma it's Faiza live in lousvile Ky I garbage this so I am going collage with JCTC that the of the collage thank you my friends
salma
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
hi
salma
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
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
Good
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Xna game studio' conversation and receive update notifications?

Ask