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Listing 12 . Source code for the class named Sprite01.
/*Sprite01.java Copyright 2013, R.G.BaldwinAn object of this class can be manipulated as a sprite in a Slick2D program.Tested using JDK 1.7 under WinXP *********************************************************/import org.newdawn.slick.AppGameContainer; import org.newdawn.slick.BasicGame;import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics;import org.newdawn.slick.Image; import org.newdawn.slick.SlickException;import org.newdawn.slick.Color; public class Sprite01{Image image = null;//The sprite wears this image float X = 0f;//X-Position of the spritefloat Y = 0f;//Y-Position of the sprite float width = 0f;//Width of the spritefloat height = 0f;//Height of the sprite float xStep = 1f;//Incremental step size in pixels - Xfloat yStep = 1f;//Incremental step size in pixels - Y float scale = 1f;//Scale factor for draw methodColor colorFilter = null;//Color filter for draw methodfloat xDirection = 1.0f;//Move to right for positive float yDirection = 1.0f;//Move down for positiveint life = 1;//Used to control life or death of spriteboolean exposed = false;//Used in the contagion program//Constructorpublic Sprite01(Image image,//Sprite wears this image float X,//Initial positionfloat Y,//Initial position float xDirection,//Initial directionfloat yDirection,//Initial direction float xStep,//Initial step sizefloat yStep,//Initial step size float scale,//Scale factor for drawingColor colorFilter) throws SlickException {//Save incoming parameter values this.image = image;this.X = X; this.Y = Y;this.xDirection = xDirection; this.yDirection = yDirection;this.xStep = xStep; this.yStep = yStep;this.scale = scale; this.colorFilter = colorFilter;//Compute and save width and height of imagewidth = image.getWidth(); height = image.getHeight();}//end constructor //----------------------------------------------------////The following accessor methods make many of the // important attributes accessible to the using// program. //----------------------------------------------------//public Image getImage(){return image; }//end getSprite//----------------------------------------------------//public void setImage(Image image) throws SlickException{ this.image = image;width = image.getWidth(); height = image.getHeight();}//end setImage //----------------------------------------------------//public float getWidth(){return width; }//end getWidth//----------------------------------------------------// public float getHeight(){return height; }//end getWidth//----------------------------------------------------//public float getX(){ return X;}//end getX //----------------------------------------------------//public void setX(float X){this.X = X; }//end setX//----------------------------------------------------// public float getY(){return Y; }//end getY//----------------------------------------------------// public void setY(float Y){this.Y = Y; }//end setY//----------------------------------------------------//public float getXDirection(){ return xDirection;}// end getXDirection //----------------------------------------------------//public void setXDirection(float xDirection){this.xDirection = xDirection; }//end setXDirection//----------------------------------------------------//public float getYDirection(){ return yDirection;}//end getYDirection //----------------------------------------------------//public void setYDirection(float yDirection){this.yDirection = yDirection; }//setYDirection//----------------------------------------------------//public float getXStep(){ return xStep;}//end getXStep //----------------------------------------------------//public void setXStep(float xStep){this.xStep = xStep; }//end setXStep//----------------------------------------------------//public float getYStep(){ return yStep;}//end getYStep //----------------------------------------------------//public void setYStep(float yStep){ this.yStep = yStep;}//end setYStep //----------------------------------------------------//public float getScale(){return scale; }//end getScale//----------------------------------------------------// public void setScale(float scale){this.scale = scale; }//end setScale//----------------------------------------------------//public Color getColorFilter(){ return colorFilter;}//end getColorFilter //----------------------------------------------------//public void setColorFilter(float red,float green,float blue){ colorFilter = new Color(red,green,blue);}//end setColorFilter //----------------------------------------------------//public int getLife(){return life; }//end getLife//----------------------------------------------------//public void setLife(int life){ this.life = life;}//end setLife //----------------------------------------------------//public boolean getExposed(){return exposed; }//end getExposed//----------------------------------------------------//public void setExposed(boolean exposed){ this.exposed = exposed;}//end setExposed //----------------------------------------------------////This method causes the sprite to be drawn each time// it is called. public void draw(){image.draw(X,Y,scale,colorFilter); }//end draw//----------------------------------------------------////This method detects collisions between this // rectangular sprite object and another rectangular// sprite object by testing four cases where a // collision could not possibly occur and assuming that// a collision has occurred if none of those cases // are true.public boolean isCollision(Sprite01 other){//Create variable with meaningful names make the // algorithm easier to understand. Can be eliminated// to make the algorithm more efficient. float thisTop = Y;float thisBottom = thisTop + height*scale; float thisLeft = X;float thisRight = thisLeft + width*scale;float otherTop = other.getY(); float otherBottom = otherTop + other.getHeight()*other.getScale();float otherLeft = other.getX(); float otherRight = otherLeft + other.getWidth()*other.getScale();if (thisBottom<otherTop) return(false); if (thisTop>otherBottom) return(false);if (thisRight<otherLeft) return(false); if (thisLeft>otherRight) return(false);return(true); }//end isCollision//----------------------------------------------------//public void move(){ X += xDirection*xStep;Y += yDirection*yStep; }//end move//----------------------------------------------------//public void edgeBounce(float winWidth,float winHeight){ //Test for a collision with one of the edges and// cause to sprite to bounce off the edge if a // collision has occurred.if(X + width*scale>= winWidth){ //A collision has occurred.xDirection = -1.0f;//reverse direction //Set the position to the right edge less the// width of the sprite. X = winWidth - width*scale;}//end if//Continue testing for collisions with the edges // and take appropriate action.if(X<= 0){ xDirection = 1.0f;X = 0; }//end ifif(Y + height*scale>= winHeight){ yDirection = -1.0f;Y = winHeight - height*scale; }//end ifif(Y<= 0){ yDirection = 1.0f;Y = 0; }//end if}//end edgeBounce //----------------------------------------------------//}//end class Sprite01


Questions & Answers

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.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
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
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Anatomy of a game engine. OpenStax CNX. Feb 07, 2013 Download for free at https://legacy.cnx.org/content/col11489/1.13
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