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  • LoadContent
  • Draw

I will discuss those two methods along with some other material in this module. I will defer a detailed discussion of the other three methods until afuture module when I write a program that modifies them.

Will discuss in fragments

A complete listing of the modified definition of the Game1 class is provided in Listing 10 near the end of the module. I will explain selected code fragments in the following paragraphs.

Beginning of the class named Game1

The beginning of the class definition for the class named Game1 is shown in Listing 4 .

Listing 4 . Beginning of the class named Game1.

namespace XNA0118Proj{ public class Game1 : Microsoft.Xna.Framework.Game{

The namespace

This class definition belongs to the XNA0118Proj namespace. This is the name of the folder containing all of the other folders and files inthe project tree as shown in the Solution Explorer in Figure 7 .

General information

The superclass named Game

The new class named Game1 extends the existing class named Game . You will find the documentation for the class named Game here . The description of this class in the documentation is fairly modest. It says simply

"Provides basic graphics device initialization, game logic, and rendering code."

Overridden methods

As I explained earlier, in order to write a program that runs under the XNA framework, you need to override some or all of five methods that are inheritedinto the Game1 class from the Game class. Let's see some of what the documentation for the Game class has to say about these methods.

  • Initialize - Called after the Game and GraphicsDevice are created, but before LoadContent .Override this method to query for any required services, and load any non-graphics resources. Use LoadContent to load graphics resources.
  • LoadContent - Called when graphics resources need to be loaded. Override this method to load any game-specific graphics resources.This method is called by Initialize . Also, it is called any time the game content needs to be reloaded, such as when the DeviceReset event occurs.
  • UnloadContent - Called when graphics resources need to be unloaded. Override this method to unload any game-specific graphicsresources.
  • Update - Called when the game has determined that game logic needs to be processed. This might include the management of the gamestate, the processing of user input, or the updating of simulation data. Override this method with game-specific logic.
  • Draw - Called when the game determines it is time to draw a frame. Override this method with game-specific rendering code.

The game loop

According to the documentation for the Game class,

" Update and Draw are called at different rates depending on whether IsFixedTimeStep is true or false.

If IsFixedTimeStep is false, Update and Draw will be called in a continuous loop.

If IsFixedTimeStep is true, Update will be called at the interval specified in TargetElapsedTime , while Draw will only be called if an Update is not due.

If Draw is not called, IsRunningSlowly will be set to true.

For more information on fixed-step and variable-step game loops, see Application Model Overview ."

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, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
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