<< 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

who was the first nanotechnologist
Lizzy Reply
k
Veysel
technologist's thinker father is Richard Feynman but the literature first user scientist Nario Tagunichi.
Veysel
Norio Taniguchi
puvananathan
Interesting
Andr
I need help
Richard
anyone have book of Abdel Salam Hamdy Makhlouf book in pdf Fundamentals of Nanoparticles: Classifications, Synthesis
Naeem Reply
what happen with The nano material on The deep space.?
pedro Reply
It could change the whole space science.
puvananathan
the characteristics of nano materials can be studied by solving which equation?
sibaram Reply
plz answer fast
sibaram
synthesis of nano materials by chemical reaction taking place in aqueous solvents under high temperature and pressure is call?
sibaram
hydrothermal synthesis
ISHFAQ
how can chip be made from sand
Eke Reply
is this allso about nanoscale material
Almas
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
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
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
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
STM - Scanning Tunneling Microscope.
puvananathan
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!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




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