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General background information

A software framework

XNA is a very sophisticated C# application. It isn't simply a program in the sense of the programs that you have seen so far in this course or aword processor or a spread sheet. Instead, it is a software framework designed specifically to make it easier for you to create computer games using the C# programming language.

What is a software framework?

Here is part of what Wikipedia has to say about a software framework:

A software framework, in computer programming, is an abstraction in which common code providing generic functionality can be selectively overridden orspecialized by user code providing specific functionality. Frameworks are a special case of software libraries in that they are reusable abstractions ofcode wrapped in a well-defined API, yet they contain some key distinguishing features that separate them from normal libraries.

Software frameworks have these distinguishing features that separate them from libraries or normal user applications:

  1. inversion of control - In a framework, unlike in libraries or normal user applications, the overall program's flow of control is not dictated bythe caller, but by the framework.
  2. default behavior - A framework has a default behavior. This default behavior must actually be some useful behavior and not a series of no-ops.
  3. extensibility - A framework can be extended by the user usually by selective overriding or specialized by user code providing specificfunctionality
  4. non-modifiable framework code - The framework code, in general, is not allowed to be modified. Users can extend the framework, but not modify itscode.

In short, a framework is a computer program that helps you to write computer programs . The description given above is a good match for the XNA framework.

New project choices in Visual C#

Up to this point in this collection of modules, all of the programs that I have explained have been Visual C# Console Applications .

Assuming that you have Visual C# 2010 and XNA Game Studio 4.0 Refresh installed on your computer, if you start Visual C# and select New Project from the File menu, you have a choice of about a dozen different kinds of projects that you can create within Visual C#. One of thosechoices is to create a Console Application .

A Console Application

When you create a Console Application, a project tree is created on your disk containing numerous folders and files. One of those files is a C#source code file named Program.cs . This file, which is the skeleton of a new class named Program , is opened in the editor pane in Visual C#.

The skeleton code in the file looks something like Listing 1 when it first opens.

Listing 1 . Initial contents of the file named Program.cs for a Console Application.

using System; using System.Collections.Generic;using System.Linq; using System.Text;namespace ConsoleApplication1 {class Program {static void Main(string[] args){ }} }

Start debugging

If you select Start Debugging on the Debug menu, the program will run and terminate almost immediately. At that point, theproject tree will have expanded to contain more files and folders even though the program hasn't yet done anything useful.

Questions & Answers

anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
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
what is biological synthesis of nanoparticles
Sanket 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
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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