Autobahner
Java Source:
/////////////////////////////////////////////
// Autobahner Markup Language //
// Steve Bobach stylinsty@yahoo.com //
// www.streetboards.com/steve/applets //
/////////////////////////////////////////////
import java.awt.*;
import java.applet.*;
import java.applet.AppletStub;
import java.lang.Thread;
import java.util.StringTokenizer;
import java.util.*;
import java.lang.Math;
import java.awt.image.*;
import java.net.URL;
import java.net.MalformedURLException;
import java.io.*;
class Actor_Class
{
int id;
String type;
String s0;
int x;
int y;
int xv;
int yv;
int wd;
int ht;
int i;
static autobahner p;
boolean visible;
boolean active;
Color c;
Actor_Class()
{
x = 10;
y = 10;
xv=0;
yv=0;
type = "NULL";
s0="NULL";
id = 0;
off();
}
public void reset()
{
on();
}
public void update()
{
}
public void paint()
{
}
public void on()
{
visible=active=true;
}
public void off()
{
visible=active=false;
}
}
class AString extends Actor_Class
{
String s;
int spd;
public URL theURL;
int death;
double r=3;
double g=3;
double b=3;
double frames;
double dir=1;
double fno=0;
Color d;
AString(String _s, String _type, int _id, int _spd)
{
super();
id = _id;
death =0;
type = _type;
c = Color.blue;
d = Color.black;
s=_s;
spd = _spd;
if (spd==1) frames=125;
if (spd==2) frames=60;
if (spd==3) frames=30;
if (spd==4) frames=15;
if (spd==5) frames=5;
if (spd==5) spd=10;
if (spd==4) spd=7;
if (spd==3) spd=4;
reset();
off();
}
public void update()
{
x+=xv;
y+=yv;
if (x>p.wd+10) death=1;
if (x<-10-p.fm.stringWidth(s)) death=1;
if (y>p.ht+p.fm.getHeight()+10) death=1;
if (y< (-p.fm.getHeight()-10) ) death=1;
if (death==1)
{
off();
if ( (id+1>=p.actor.length) || (p.actor[id+1].type.equals("NULL")) )
{
p.actor[1].reset();
}
else
p.actor[id+1].reset();
}
} // update
public void paint()
{
if (type.equals("FT"))
{
r=(((double)c.getRed())/frames)*fno;
g=(((double)c.getGreen())/frames)*fno;
b=(((double)c.getBlue())/frames)*fno;
fno += dir;
if (fno>frames)
{
fno=frames;
dir = -1;
}
if (fno<=1)
if (dir==-1)
death=1;
d = new Color((int)r,(int)g,(int)b);
p.dbuff.setColor(d);
}
else p.dbuff.setColor(c);
p.dbuff.drawString(s,x,y);
if (!s0.equals("NULL") )
p.dbuff.drawLine(x,y+2,x+p.fm.stringWidth(s),y+2);
}
public void reset()
{
on();
death=0;
if (type.equals("FT")) // Fade Text
{
x=(p.wd/2)-(p.fm.stringWidth(s)/2);
y=p.ht/2+(p.fm.getHeight()/3);
xv=0;
yv=0;
r=g=b=3;
dir = 1;
}
else
if (type.equals("RL"))
{
x=p.wd;
y=(p.ht/2)+(p.fm.getHeight()/3);
xv=-spd;
yv=0;
}
else if (type.equals("LR"))
{
x=0-p.fm.stringWidth(s);
y=p.ht/2+(p.fm.getHeight()/3);
xv=spd;
yv=0;
}
else if (type.equals("TB"))
{
x=(p.wd/2)-(p.fm.stringWidth(s)/2);
y=0;
xv=0;
yv=spd;
}
else if (type.equals("BT"))
{
x=(p.wd/2)-(p.fm.stringWidth(s)/2);
y=p.ht+p.fm.getHeight();
xv=0;
yv=-spd;
}
else
{
x=y=0;
xv=yv=0;
}
}
}
class Starmode extends Actor_Class
{
int m;
Starmode(int _m, int _id)
{
m = _m;
id = _id;
type="Starmode";
}
public void update()
{
if (m==6) p.stopthread=true; // TN
else
if (m==7) p.stopthread=false; // TF
else
if (m==8) p.destroyapp=true; // DN
else
if (m==9) p.destroyapp=false; // DF
else
if (m==4) p.actor[0].on();
else
if (m==5) p.actor[0].off();
else
if ( (m==10) || (m<4) )
((Stars)p.actor[0]).movemode = m; // 10 no stars moving
if ( (id+1>=p.actor.length) || (p.actor[id+1].type.equals("NULL")) )
{
p.actor[1].reset();
}
else
p.actor[id+1].reset();
off();
}
}
class Stars extends Actor_Class
{
double x[]; // current x position
double y[];
double xv[]; // current x velocity
double yv[];
double gx[]; // goal speed for xv
double gy[];
Color cl[];
int movemode;
Stars()
{
x = new double[360];
y = new double[360];
xv = new double[360];
yv = new double[360];
gx = new double[360];
gy = new double[360];
cl = new Color[360];
int t;
int f = 255/6;
for (i=0; i<x.length; i++)
{
x[i] = Math.random()*p.wd;
y[i] = Math.random()*p.ht;
xv[i] = 0;
yv[i] = 0;
gx[i] = Math.random()*3;
gy[i] = Math.random()*3;
t = Math.abs((int)gx[i])+Math.abs((int)gy[i]);
cl[i] = new Color(f*t, f*t, f*t);
}
on();
movemode = 2; // up, down, left, right
type="Stars";
}
public void update()
{
if (movemode==10)
{
for (i=0; i<x.length; i++)
{
if (yv[i]>0) yv[i]-=.05;
if (yv[i]<0) yv[i]+=.05;
if (xv[i]<0) xv[i]+=.05;
if (xv[i]>0) xv[i]-=.05;
if ( (int)xv[i]==0) xv[i]=0;
if ( (int)yv[i]==0) yv[i]=0;
}
}
if (movemode==0)
{
for (i=0; i<x.length; i++)
{
if (yv[i]>-gy[i]) yv[i]-=.05;
if (xv[i]>0) xv[i]-=.05;
if (xv[i]<0) xv[i]+=.05;
if ( (int)xv[i]==0) xv[i]=0;
}
}
if (movemode==1)
{
for (i=0; i<x.length; i++)
{
if (yv[i]<gy[i]) yv[i]+=.05;
if (xv[i]>0) xv[i]-=.05;
if (xv[i]<0) xv[i]+=.05;
if ( (int)xv[i]==0) xv[i]=0;
}
}
if (movemode==2)
{
for (i=0; i<x.length; i++)
{
if (xv[i]>-gx[i]) xv[i]-=.05;
if (yv[i]>0) yv[i]-=.05;
if (yv[i]<0) yv[i]+=.05;
if ( (int)yv[i]==0) yv[i]=0;
}
}
if (movemode==3)
{
for (i=0; i<x.length; i++)
{
if (xv[i]<gx[i]) xv[i]+=.05;
if (yv[i]>0) yv[i]-=.05;
if (yv[i]<0) yv[i]+=.05;
if ( (int)yv[i]==0) yv[i]=0;
}
}
for (i=0; i<x.length; i++)
{
x[i]+=xv[i]; y[i]+=yv[i];
if (x[i]>p.wd) x[i]=0;
if (y[i]>p.ht) y[i]=0;
if (x[i]<0) x[i]=p.wd;
if (y[i]<0) y[i]=p.ht;
}
}
public void paint()
{
for (i=0; i<x.length; i++)
{
p.dbuff.setColor(cl[i]);
p.dbuff.drawRect((int)x[i],(int)y[i],1,1);
}
}
}
class Autolink_class extends AString
{
int tried=0;
public URL theURL;
Autolink_class (String _s, String _type, int _id, int _spd)
{ super(_s,_type,_id,_spd);
c = Color.blue;
reset();
s0="NULL";
off();
}
public void chklnk()
{
if (!s0.equals("NULL"))
{
if ((tried==0) || ((p.md==true)&&(p.mx>=x)&&(p.mx<=x+p.fm.stringWidth(s))&&(p.my<=y)&&(p.my>=y-p.fm.getHeight())))
{
try { theURL = new URL(s0); }
catch (MalformedURLException e) {}
if ( theURL != null)
{
p.getAppletContext().showDocument(theURL);
}
c=Color.white;
tried=1;
}
}
}
}
public class autobahner extends Applet implements Runnable
{
////////////////////////////
// Standard system variables
////////////////////////////
Random rnd;
Font fnt;
FontMetrics fm;
Graphics dbuff; // Graphics Context for the double buffer
Image dimage; // The double buffer image
Thread runner;
String param0;
String p0;
String p1;
boolean stopthread = true; // pause on/off the applet when at different url
boolean destroyapp = false; // destroy on/off when at different url
/////////////////////////////
// Standard runtime variables (may be set here)
////////////////////////////
boolean key[];
int lagtimer = 0; // set to 0 upon any mouse input
boolean mouse_enter; // set to 'true' when mouse enters applet
boolean paintok = false; // computer may update window only while not in Stydraw(Synchronized?)
boolean md; // Mouse down
boolean mu; // Mouse up
int mx; // Mouse x
int my; // Mouse y
int wd;
int ht;
MediaTracker tracker; // Use in ini
Actor_Class actor[];
Image image[];
int stagelo[]; // the low array number for the stage
int stagehi[]; // the hi array number for the stage
boolean stageon[];
public void init()
{
//tracker = new MediaTracker(this);
int i;
int n=0;
rnd = new Random();
fnt = new Font("TimesRoman", Font.BOLD, 80);
fm = getFontMetrics(fnt);
dimage = createImage(size().width,size().height);
dbuff = dimage.getGraphics();
dbuff.setFont(fnt);
wd = size().width;
ht = size().height;
actor = new Actor_Class[500];
stagelo = new int[25];
stagehi = new int[25];
stageon = new boolean[25];
for (i=0; i<stageon.length; i++)
{
stageon[i]=false;
}
stagelo[0] = 0; stagehi[0] = 199;
stagelo[1] = 200; stagehi[1] = 299;
stageon[0] = true;
for (i=0; i<actor.length; i++)
{
actor[i] = new Actor_Class();
}
actor[0].p = this; // set static actor variable
param0 = getParameter("String");
StringTokenizer st = new StringTokenizer(param0);
String type="RL";
String ur="http://www.streetboards.com/steve/applets/autobahner/autobahner.html";
int setur=0;
actor[n] = new Stars();
n++;
int spd=1;
int mn=0;
int r=0;
int g=0;
int b=255;
Color c = Color.blue;
while (st.hasMoreTokens())
{
p0 = new String(st.nextToken("|"));
p0.trim();
if (p0.equals("UR"))
{
ur = st.nextToken();
}
else
if (p0.equals("UN"))
{
setur=1;
}
if (p0.equals("MN"))
{
mn=1;
}
else
if (p0.equals("MF"))
{
mn=0;
}
else
if (p0.equals("CL"))
{
int r1 = Integer.valueOf(st.nextToken()).intValue();
int g1 = Integer.valueOf(st.nextToken()).intValue();
int b1 = Integer.valueOf(st.nextToken()).intValue();
c = new Color(r1,g1,b1);
}
else
if (p0.equals("S1"))
{
spd=1;
}
else
if (p0.equals("S2"))
{
spd=2;
}
else
if (p0.equals("S3"))
{
spd=3;
}
else
if (p0.equals("S4"))
{
spd=4;
}
else
if (p0.equals("S5"))
{
spd=5;
}
else
if (p0.equals("TN"))
{
actor[n]=new Starmode(6,n);
n++;
}
else
if (p0.equals("TF"))
{
actor[n]=new Starmode(7,n);
n++;
}
else
if (p0.equals("DN"))
{
actor[n]=new Starmode(8,n);
n++;
}
else
if (p0.equals("DF"))
{
actor[n]=new Starmode(9,n);
n++;
}
else
if (p0.equals("SS"))
{
actor[n]=new Starmode(10,n);
n++;
}
else
if (p0.equals("SN"))
{
actor[n]=new Starmode(4,n);
n++;
}
else
if (p0.equals("SF"))
{
actor[n]=new Starmode(5,n);
n++;
}
else
if (p0.equals("SU"))
{
actor[n]=new Starmode(0,n);
n++;
}
else
if (p0.equals("SD"))
{
actor[n]=new Starmode(1,n);
n++;
}
else
if (p0.equals("SL"))
{
actor[n]=new Starmode(2,n);
n++;
}
else
if (p0.equals("SR"))
{
actor[n]=new Starmode(3,n);
n++;
}
else
if (p0.equals("FT"))
{
type = "FT";
p1 = st.nextToken();
if ((mn==1) && (setur==1))
actor[n]=new Autolink_class(p1,type,n,spd);
else
actor[n]=new AString(p1,type,n,spd);
actor[n].c = c;
if (setur==1) actor[n].s0=ur; setur=0;
n++;
}
else
if (p0.equals("RL"))
{
type = "RL";
p1 = st.nextToken();
if ((mn==1) && (setur==1))
actor[n]=new Autolink_class(p1,type,n,spd);
else
actor[n]=new AString(p1,type,n,spd);
actor[n].c = c;
if (setur==1) actor[n].s0=ur; setur=0;
n++;
}
else
if (p0.equals("LR"))
{
type = "LR";
p1 = st.nextToken();
if ((mn==1) && (setur==1))
actor[n]=new Autolink_class(p1,type,n,spd);
else
actor[n]=new AString(p1,type,n,spd);
actor[n].c = c;
if (setur==1) actor[n].s0=ur; setur=0;
n++;
}
else
if (p0.equals("TB"))
{
type = "TB";
p1 = st.nextToken();
if ((mn==1) && (setur==1))
actor[n]=new Autolink_class(p1,type,n,spd);
else actor[n]=new AString(p1,type,n,spd);
actor[n].c = c;
if (setur==1) actor[n].s0=ur; setur=0;
n++;
}
else
if (p0.equals("BT"))
{
type = "BT";
p1 = st.nextToken();
if ((mn==1) && (setur==1))
actor[n]=new Autolink_class(p1,type,n,spd);
else
actor[n]=new AString(p1,type,n,spd);
actor[n].c = c;
if (setur==1) actor[n].s0=ur; setur=0;
n++;
}
else
{
if ((mn==1) && (setur==1))
actor[n]=new Autolink_class(p0,type,n,spd);
else
actor[n]=new AString(p0,type,n,spd);
actor[n].c = c;
if (setur==1) actor[n].s0=ur; setur=0;
n++;
}
}
actor[1].on();
}// End Init()
public void update(Graphics g)
{
paint(g);
}
public void start()
{
if (runner == null)
{
runner = new Thread(this);
runner.start();
}
}
public void stop()
{
if (stopthread==true)
{
if (runner != null)
{
runner.stop();
runner = null;
}
}
}
public void destroy()
{
if (destroyapp==true)
{
actor = null;
}
}
public boolean mouseEnter(Event evt, int xx, int yy)
{
mouse_enter=true;
return true;
}
public boolean mouseExit(Event evt, int x, int y)
{
mouse_enter=false;
return true;
}
public boolean mouseMove(Event evt, int x, int y)
{
lagtimer = 0;
mx = x;
my = y;
return true;
}
public boolean mouseDrag(Event evt, int x, int y)
{
lagtimer = 0;
md = true;
mu = false;
mx = x;
my = y;
return true;
}
public boolean mouseUp(Event evt, int xx, int yy)
{
lagtimer = 0;
mu = true;
md = false;
return true;
}
public boolean mouseDown(Event evt, int xx, int yy)
{
lagtimer = 0;
md = true;
mu = false;
return true;
}
public void paint(Graphics g)
{
if (paintok==true) g.drawImage(dimage, 0, 0, this);
}
//////////////////////
// Run Function
//////////////////////
public void run()
{
int i;
int j;
paintok=true;
while (true)
{
dbuff.setColor(Color.black);
dbuff.fillRect(0,0,wd,ht);
paintok=false;
// make go through the stages
for (i=0; i<stageon.length; i++)
{
if (stageon[i]==true)
for (j=stagelo[i]; j<=stagehi[i]; j++)
{
if (actor[j].active==true) actor[j].update();
if (actor[j].visible==true) actor[j].paint();
}
}
dbuff.setColor(new Color(mx/2,my,255-mx/2));
dbuff.setFont(fnt);
paintok=true;
repaint();
try
{
Thread.sleep(20);
}
catch(InterruptedException ex) {}
}
} // end run function
} // END APPLET SKELETON
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