/**flyingWords.java modified by gregvan
 *based on work by Dr.Sharon Tuttle
*Humboldt State University, California,USA
 * RECOMMENDED SIZE: height 250, width 600
* you may change the words by modifying
* the html on your webpage... parameters
* pass what you want to say to the applet
*<applet code=flyingWords6.class
*height=250 width=600>
*<param name="yw" value="your words go here...">
*<param name="mw" value="more words on second line">
*<param name="sw" value="Stationary Words...">
*</applet>
**/


import java.applet.*;
import java.awt.*;

public class flyingWords6 extends Applet implements Runnable
{
        //-----
        // data fields
        //-----
 

int rr,gg,bb;//color variables       
int x, y; //locations
int z;
int a;
int zz=1; //initial value of up-down counters
int xx=1;
int yy=1;
int aa=1;
String yourWords;
String moreWords;
String stationaryWords;        
        Thread    myRunner;


        Image     buffer;          // [1]"the off-screen image for double-buffering"
        Dimension appletSize;      // [1]"the size of the applet"
        Graphics  bufferGraphics;  // [1]"a Graphics object for the buffer"

       
        //-----
        // methods
        //-----
        
        public void init()
        {
// get the words from the webpages html                

yourWords=getParameter("yw");
if (yourWords==null){yourWords="";}
moreWords=getParameter("mw");
if (moreWords==null){moreWords="";}
stationaryWords=getParameter("sw");
if (stationaryWords==null){stationaryWords="";}

Font chosenFont = new Font("Dialog", Font.PLAIN, 30); 
            
                setBackground(Color.black);
               
                
                
               
                // get size of applet (appletSize is a Dimension object)
                appletSize = this.getSize();

                // buffer is now created to be the same size as the applet
                buffer = this.createImage(appletSize.width, appletSize.height);

                // get a Graphics object for buffer
                bufferGraphics = buffer.getGraphics();
        }

        public void start()
        {
                if (myRunner == null)
                { 
                        // not bothering to name the thread, this time;
                        myRunner = new Thread(this);
                        myRunner.start();
                }


        }

        public void run()
        {
                


Thread  executingThread;
                                
                executingThread = Thread.currentThread();

                while (myRunner == executingThread)
                {
                  //new random numbers to start animation
		x=(int)(Math.random() *300);
		y=(int)(Math.random() *100);
		z=(int)(Math.random() *300);
		a=(int)(Math.random() *100);     

                        repaint();
                        try
                        {
                                // sleep for 1 second (1000 msec = 1 sec)
                                Thread.sleep(100);
                        }
                        catch(InterruptedException e) 
                        {
                        } 

                        while (myRunner != null)
                        {
                               
                                repaint(); 
                                try
                                {
                                        // pause for .1 second between
                                        // repaintings
                                        Thread.sleep(100);  // .1 second pause
                                }
                                catch (InterruptedException e) 
                                {
                                }
                        }  
                }  //end while thread executing
        }

        //suspends execution when user leaves page
        public void stop()
        { 
                if (myRunner != null)
                {
                        myRunner = null;
                }
        }

        // VERY IMPORTANT --- [1] "It is important to override this method
        // like this for double-buffering" --- this new version of update()
        // doesn't clear the screen, it just calls paint() immediately.
        public void update(Graphics g)
        {
                paint(g);
        }

        // now, when double-buffering, here in paint() I will not paint on
        // Graphics object g --- I will paint on my buffer's Graphics object,
        // instead
        public void paint(Graphics g)
        {
for(int i=0; i<5;i++)
{
//color changer rr+16 makes it stripey
        rr=rr+4;
        if(rr>255){rr=rr-255;}
        gg=gg+2;
        if(gg>255){gg=gg-255;}
        bb=bb+3;
        if(bb>255){bb=bb-255;}
//move the location of the words
//classic up-down counters
//we use x and z to define where to start the words
//sometimes, zz=-1 and xx=1
//then the words stop moving...
//y and a are used for vertical position...
        z=z+zz;
        if(z>200){zz=-1;}
        if(z<-50){zz=3;}
        a=a+aa;
        if(a>150){aa=-1;}
        if(a<-20){aa=2;}
        x=x+xx;
        if(x>200){xx=-2;}
        if(x<-50){xx=1;}
        y=y+yy;
        if(y>150){yy=-3;}  
        if(y<0){yy=1;} 


Color eNew = new Color(rr, gg, bb);
   bufferGraphics.setColor(eNew);
   bufferGraphics.setFont(new Font("Serif",Font.PLAIN,36));

//use the parameters sent from the webpage
// the small moving words
  bufferGraphics.drawString(""+yourWords , x+z,y+a);
  bufferGraphics.drawString(""+moreWords , x+z+15,y+a+30); 

//this color is different from the moving words
//because i switched the rr and gg
Color dNew = new Color(gg, rr, bb);
bufferGraphics.setColor(dNew);

bufferGraphics.drawString(""+stationaryWords ,15,40); 



}//end of for loop
// [1]"then copy the off-screen buffer onto the screen"
              
                g.drawImage(buffer, 0, 0, this);
        }
}