<< Chapter < Page
  Xna game studio     Page 7 / 12
Chapter >> Page >

Listing 6 . Adjust column and row counters.

if(++spriteCol == spriteColLim){ //Column limit has been hit, reset the// column counter and increment the // funSequenceCnt.spriteCol = 0; funSequenceCnt++;

Execute the pause sequence if it is time for it

The last statement in Listing 6 increments the funSequenceCnt . The first statement in Listing 7 tests to see if it has a value of 5. If so, all five cycles of the fun sequence have been executed and the code in the body ofthe if statement that begins at the top of Listing 7 will be executed. The purpose of this code is to execute two cycles of the pausesequence.

Listing 7 . Execute the pause sequence if it is time for it.

if((funSequenceCnt == 5) || (spriteRow == 1)){ spriteRow = 1;//advance to second row//Increment the pause sequence counter. pauseSequenceCnt++;//After two cycles in the pause mode, reset // variables and start the overall cycle// again. if(pauseSequenceCnt == 3){spriteRow = 0; funSequenceCnt = 0;pauseSequenceCnt = 0; }//end if on pauseSequenceCnt}//end if on funSequenceCnt }//end if on spriteColLim in

The conditional clause

The conditional clause in the if statement at the top of Listing 7 also tests to see if the row counter is pointing to row 1. If so, this means that the pause cycle has already begun and should be continued. Therefore,the body of that if statement will be executed. In other words, the body of the if statement will be executed if the funSequenceCnt is equal to 5 or the spriteRow is equal to 1.

Set the row counter to 1

The first statement in the body of the if statement sets the row counter to 1. This is necessary because control may have just entered thebody of the if statement for the first time following completion of five cycles using the sprites in row 0 (the top row in Figure 1 ).

Increment the pauseSequenceCnt

Then Listing 7 increments the pauseSequenceCnt and compares it with the literal value 3. If there is a match, two cycles of animation usingthe sprite images in the bottom row of Figure 1 have been completed and it's time to return to the five cycles using the sprite images in the top row of Figure 1 .

To accomplish this, the row counter, the funSequenceCnt , and the pauseSequenceCnt are all set to 0. This will cause five cycles using the sprite images in the top row of Figure 1 to be executed before control will once again enter the code in Listing 7 .

Adjust sprite position and frame rate

The code that we have examined so far mainly deals with selecting the sprite image to draw each time the Draw method is called. We haven't dealt with the location where the sprite will be drawn in the game window, theorientation of the sprite when it is drawn, and the frame animation rate of fast versus slow .

Listing 8 adjusts these drawing parameters.

Listing 8 . Adjust sprite position and frame rate.

if((spriteRow == 0) || ((spriteRow == 1)&&(spriteCol == 0))) { msPerFrame = fast;spritePosition.X += frameWidth * scale / slide; }else if ((spriteRow == 1) || ((spriteRow == 0)&&(spriteCol == 0))){ //Stop and display images.msPerFrame = slow; }//end if-else

Questions & Answers

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
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
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
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
Difference between extinct and extici spicies
Amanpreet Reply
in a comparison of the stages of meiosis to the stage of mitosis, which stages are unique to meiosis and which stages have the same event in botg meiosis and mitosis
Leah Reply
Researchers demonstrated that the hippocampus functions in memory processing by creating lesions in the hippocampi of rats, which resulted in ________.
Mapo Reply
The formulation of new memories is sometimes called ________, and the process of bringing up old memories is called ________.
Mapo Reply
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, 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