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Listing 7 . Beginning of the overridden LoadContent method of the Game1 class.

protected override void LoadContent() { spriteBatch = new SpriteBatch(GraphicsDevice);//Create a sprite for the background image. spiderWeb =new Sprite("spiderwebB",Content,random); spiderWeb.Position = new Vector2(0f,0f);

A background sprite with a spider web image

The last two statements in Listing 7 instantiate a new Sprite object and load it with an image of the spider web shown in Figure 1 .

The purpose of this sprite is to serve as a background image. Before adding the image of the spider web to the Content folder during the design phase, I used an external program to scale the image to the same size asthe game window established by the constructor in Listing 15 .

The code in Listing 7 positions the upper left corner of the sprite at the upper left corner of the game window so that it just fills the game window asshown in Figure 1 .

Instantiate the spider and ladybug Sprite objects

The code in Listing 8 instantiates all of the spider and ladybug Sprite objects and sets their properties.

Listing 8 . Instantiate the spider and ladybug Sprite objects.

//Instantiate all of the spiders and cause them to // move from left to right, top to// bottom. Pass a reference to the same Random // object to all of the sprites.for(int cnt = 0;cnt<numSpiders;cnt++) { spiders.Add(new Sprite("blackWidowSpider",Content,random)); //Set the position of the current spider at a// random location within the game window. spiders[cnt].Position = new Vector2( (float)(windowWidth * random.NextDouble()),(float)(windowHeight * random.NextDouble())); //Get a direction vector for the current spider.// Make both components positive to cause the // vector to point down and to the right.spiders[cnt].Direction = DirectionVector((float)maxVectorLength, (float)(maxVectorLength * random.NextDouble()),false,//xNeg false);//yNeg//Notify the spider object of the size of the // game window.spiders[cnt].WindowSize =new Point(windowWidth,windowHeight); //Set the speed in moves per second for the// current spider to a random value between // maxSpiderSpeed/2 and maxSpiderSpeed.spiders[cnt].Speed = maxSpiderSpeed / 2+ maxSpiderSpeed * random.NextDouble() / 2; }//end for loop//Use the same process to instantiate all of the // ladybugs and cause them to move from right to// left, bottom to top. for(int cnt = 0;cnt<numLadybugs;cnt++) { ladybugs.Add(new Sprite("ladybug",Content,random)); ladybugs[cnt].Position = new Vector2( (float)(windowWidth * random.NextDouble()),(float)(windowHeight * random.NextDouble())); ladybugs[cnt].Direction = DirectionVector( (float)maxVectorLength,(float)(maxVectorLength * random.NextDouble()), true,//xNegtrue);//yNeg ladybugs[cnt].WindowSize = new Point(windowWidth,windowHeight);ladybugs[cnt].Speed = maxLadybugSpeed / 2+ maxLadybugSpeed * random.NextDouble() / 2; }//end for loop}//end LoadContent

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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