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Listing 11 . Source code for the sprite 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

Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
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.
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
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
what is system testing
what is the application of nanotechnology?
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
anybody can imagine what will be happen after 100 years from now in nano tech world
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
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
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
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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