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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

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
Commplementary angles
Idrissa Reply
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Sherica
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Sherica
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Tamia
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+_
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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
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Nancy Reply
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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
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
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. 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
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abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
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Porter
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Yasmin
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Cesar
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Ramkumar Reply
what is nano technology
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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
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
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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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