APPENDIX B

MARBLES WORLD CLIENT CODE

import java.awt.*;

import java.applet.*;

import java.util.*;

import java.io.*;

import java.net.*;

import java.util.Date;

import vrml.external.field.*;

import vrml.external.Node;

import vrml.external.Browser;

import vrml.external.exception.*;

import netscape.javascript.JSObject;

import dtai.net.*;

// ball.e is currently as follows:

// #

// 0 - no effect

// 1 - non-collidable

// 2 - anti-gravity

// 3 - stop

// 4 - goal stealing

// 5 - add a fence

// 6 - bigger

//-------------------------------------------------------------------

// This is the main applet class

public class Marbles extends Applet implements EventOutObserver {

TextArea output = null;

//Main Window for Controls

MainWindow b;

// Browser we're using

Browser browser;

// Root of the scene graph (to which we add our clumps)

Node board = null;

Node pointer = null;

Node designer = null;

Node sides = null;

Node slant = null;

Node pitem[] = {null,null,null,null,null,null,null};

Node slqu[] = {null,null,null,null};

Node material = null;

EventInSFColor diffuseColor = null;

EventInMFNode addPI[] = {null,null,null,null,null,null,null};

EventInMFNode removePI[] = {null,null,null,null,null,null,null};

EventInMFNode addslqu[] = {null,null,null,null};

EventInMFNode removeslqu[] = {null,null,null,null};

Node gl[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

EventInMFNode addGoal[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

EventInMFNode removeGoal[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

Node sensor[] = {null,null,null,null,null,null,null};

Node slantSensor[] = {null,null,null,null};

Node wrapSensor = null;

Node root[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

EventInMFNode addChildren[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

EventOutSFVec3f translation_changed[] = {null,null,null,null,null,null,null,null,null,null};

EventOutSFVec3f pointer_changed = null;

EventInSFVec3f pointer_translation = null;

EventInMFNode addSides = null;

EventInMFNode removeSides = null;

EventInMFNode removeChildren[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

EventInSFVec3f set_translation[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

EventInSFVec3f slant_translation = null;

EventInSFVec3f set_scale[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

EventInSFRotation slant_rotation = null;

EventOutSFTime touchTime[] = {null,null,null,null,null,null,null};

EventOutSFTime slantTouchTime[] = {null,null,null,null};

EventOutSFTime wrapTouchTime = null;

EventOutSFVec3f hitb = null;

EventOutSFVec3f hitt = null;

Node[] goalshape[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

Node[] pshape[] = {null,null,null,null,null,null,null,null,null,null};

Node[] qshape[] = {null,null,null,null};

Node[] shape = null;

Node[] bumpers = null;

Node[] pieceshape[] = {null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null};

int marker=0;

int newpiecex=0, newpiecey=0;

int curnode=0;

int curtype=0;

double hitpoint[] = {0.0,0.0,0.0,0.0};

float offsetx=0.0f,offsety=0.0f,oldx=0.0f,oldy=0.0f,oldz=0.0f;

int mode = 0;

boolean speedtest=true; //test the speed of the animator for each client

int qno = 103;

boolean designing = false;

int lastmodesent = 0;

Player[] player = new Player[4]; // array of players

int pn; //client player number

int nump=0;

int numplay=0;

int turncolor=1;

int sim_type=1;

public final static int PORT=8765;

PieceList pl = new PieceList(7);

EffectList el = new EffectList(7);

Image image[]={null,null,null,null,null,null,null};

PortToServer pts;

public void init() {

//

// Initialize connection to Cosmo Player

//

JSObject win = JSObject.getWindow(this);

JSObject doc = (JSObject) win.getMember("document");

JSObject embeds = (JSObject) doc.getMember("embeds");

browser = (Browser) embeds.getSlot(0);

try {

pts = new PortToServer(this.getCodeBase().getHost(),PORT,this);

pts.start();

for(int x=0;x<100;x++) {

root[x] = browser.getNode("T" + x);

addChildren[x] = (EventInMFNode) root[x].getEventIn("addChildren");

removeChildren[x] = (EventInMFNode) root[x].getEventIn("removeChildren");

set_translation[x] = (EventInSFVec3f) root[x].getEventIn("translation");

set_scale[x] = (EventInSFVec3f) root[x].getEventIn("scale");

}

for(int x=0;x<4;x++) {

slantSensor[x] = browser.getNode("SS" + x);

slantTouchTime[x] = (EventOutSFTime) slantSensor[x].getEventOut("touchTime");

slantTouchTime[x].advise(this, new Integer(10 + x));

slqu[x] = browser.getNode("SQ" + x);

addslqu[x] = (EventInMFNode) slqu[x].getEventIn("addChildren");

removeslqu[x] = (EventInMFNode) slqu[x].getEventIn("removeChildren");

}

for(int x=0;x<7;x++) {

pitem[x] = browser.getNode("PI" + x);

addPI[x] = (EventInMFNode) pitem[x].getEventIn("addChildren");

removePI[x] = (EventInMFNode) pitem[x].getEventIn("removeChildren");

}

for(int x=0;x<30;x++) {

gl[x] = browser.getNode("G" + x);

addGoal[x] = (EventInMFNode) gl[x].getEventIn("addChildren");

removeGoal[x] = (EventInMFNode) gl[x].getEventIn("removeChildren");

}

board = browser.getNode("TSB");

slant = browser.getNode("BOARD");

wrapSensor = browser.getNode("WRAP");

wrapTouchTime = (EventOutSFTime) wrapSensor.getEventOut("touchTime");

wrapTouchTime.advise(this, new Integer(14));

pointer = browser.getNode("T100");

pointer_translation = (EventInSFVec3f) pointer.getEventIn("translation");

slant_rotation = (EventInSFRotation) slant.getEventIn("rotation");

slant_translation = (EventInSFVec3f) slant.getEventIn("translation");

pointer_changed = (EventOutSFVec3f) pointer.getEventOut("translation_changed");

designer = browser.getNode("TSD");

sides = browser.getNode("SIDES");

addSides = (EventInMFNode) sides.getEventIn("addChildren");

removeSides = (EventInMFNode) sides.getEventIn("removeChildren");

for(int x=0;x<7;x++) {

sensor[x] = browser.getNode("TS" + x);

touchTime[x] = (EventOutSFTime) sensor[x].getEventOut("touchTime");

touchTime[x].advise(this, new Integer(x+1));

}

// Get the material node...

material = browser.getNode("MAT");

// Get the diffuseColor EventIn

diffuseColor = (EventInSFColor) material.getEventIn("set_diffuseColor");

// Get Hit Point for Board

hitb = (EventOutSFVec3f) board.getEventOut("translation_changed");

hitt = (EventOutSFVec3f) designer.getEventOut("hitPoint_changed");

// Set up the callback

hitb.advise(this, new Integer(0));

hitt.advise(this, new Integer(7));

}

catch (InvalidVrmlException e) {

showStatus("PROBLEMS!: " + e);

}

catch (InvalidEventInException e) {

showStatus("PROBLEMS!: " + e);

}

catch (InvalidEventOutException e) {

showStatus("PROBLEMS!: " + e);

}

catch (IOException e) {

showStatus("PROBLEMS!: " + e.toString());

}

b = new MainWindow("Controls",true,this);

b.resize(250,480);

if(sim_type==0) {b.show();}

b.start();

for(int x=0;x<4;x++) {

addPlayer(new Player());

}

for(int ww=0;ww<4;ww++) {

addSlQu(ww,0,true);

}

for(int xx=1;xx<8;xx++) {

pl.AddtoPieceList(xx);

el.AddtoEffectList(xx);

}

}

public void callback(EventOut who, double when, Object which) {

Integer whichNum = (Integer) which;

if (whichNum.intValue()>0 && whichNum.intValue()<10 ) {

if(!designing && turncolor==pn && sim_type==0){

float[] val = hitb.getValue();

offsetx = val[0];

offsety = val[1];

UpdatePointer(0,0,0,30,0,0,0,0);

oldx = 0;

oldy = 0;

}

}

if (whichNum.intValue()==0) {

float[] val = hitb.getValue();

UpdateVRML(4,curnode,oldx,oldy,oldz,val[0],val[1],offsetx,offsety);

UpdatePointer(1,oldx,oldy,oldz,val[0],val[1],offsetx,offsety);

}

else if (whichNum.intValue()>0 && whichNum.intValue()<8) {

int iv=whichNum.intValue()-1;

if (mode==1 && !designing && pl.l[iv]>0 && turncolor==pn && sim_type==0) {

if(pl.l[iv]==1 || pl.l[iv]==6 || pl.l[iv]==7) {

curnode=b.anim.num;

} else {

curnode=50+b.anim.numo;

}

curtype=pl.l[iv];

addNode(curnode,curtype,0,0,0,0,0);

designing = true;

} else if (mode==2) {

b.anim.ars.AddToArsenal(el.l[iv]);

} else if (mode==3){

String eventstring = "3" + ((100*pn) + b.anim.ars.TakeFromArsenal(iv));

eventstring = eventstring + (b.anim.count+b.anim.eql);

pts.writeToServer(eventstring);

ReplaceNode(0,iv,LoadString());

eventstring = "3" + (100*pn);

eventstring = eventstring + (b.anim.count+b.anim.eqd);

pts.writeToServer(eventstring);

}

}

else if (whichNum.intValue()>=10 && whichNum.intValue()<=13) { //if animating, slant added to queue

if(mode==1 && lastmodesent==0) { //ignore request for mode change if already made a request -- only server updates mode

pts.writeToServer("92");

lastmodesent++;

//Paletize(2);

}

else if(mode==2 && lastmodesent==1) {

pts.writeToServer("93");

if(designing==true) {

removeChildren[curnode].setValue(pieceshape[curnode]);

designing=false;

}

UpdatePointer(0,0,0,30,0,0,0,0);

lastmodesent++;

Bumpers(1);

b.anim.wrapon = false;

//Paletize(3);

}

else if(mode==3&&turncolor==pn) {

pts.writeToServer("2" + (whichNum.intValue()-9));

}

}

else if (whichNum.intValue()==14) {

if(mode==0) {

pts.writeToServer("6" + pn); //request goals for next round

Paletize(1);

mode=1;

UpdateColor(0,turncolor);

//Four Corner Balls

b.anim.ball[0].x=500; b.anim.ball[0].y=100; b.anim.ball[0].m=b.anim.bm;

addNode(0,0,20,1,1,0,0);

//if(b.anim.rules.roundtype==0) { addNode(0,0,20,1,1,0,0); }

//else if(b.anim.rules.roundtype==1) { addNode(0,0,20,0,1,0,0); }

//else if(b.anim.rules.roundtype==2) { addNode(0,0,20,0,0,1,0); }

b.anim.ball[1].x=100; b.anim.ball[1].y=500; b.anim.ball[1].m=b.anim.bm;

addNode(1,0,20,1,0,0,0);

//if(b.anim.rules.roundtype==0) { addNode(1,0,20,1,0,0,0); }

//else if(b.anim.rules.roundtype==1) { addNode(1,0,20,.6,1,0,0); }

//else if(b.anim.rules.roundtype==2) { addNode(1,0,20,1,0,0,0); }

b.anim.ball[2].x=900; b.anim.ball[2].y=500; b.anim.ball[2].m=b.anim.bm;

addNode(2,0,20,0,0,1,0);

//if(b.anim.rules.roundtype==0) { addNode(2,0,20,0,0,1,0); }

//else if(b.anim.rules.roundtype==1) { addNode(2,0,20,0,1,.6,0); }

//else if(b.anim.rules.roundtype==2) { addNode(2,0,20,1,.4,0,0); }

b.anim.ball[3].x=500; b.anim.ball[3].y=900; b.anim.ball[3].m=b.anim.bm;

addNode(3,0,20,0,1,0,0);

//if(b.anim.rules.roundtype==0) { addNode(3,0,20,0,1,0,0); }

//else if(b.anim.rules.roundtype==1) { addNode(3,0,20,0,1,.4,0); }

//else if(b.anim.rules.roundtype==2) { addNode(3,0,20,0,.6,1,0); }

}

else if(mode>1) {

//Do nothing

} else {

if(sim_type==0) {

removeChildren[curnode].setValue(pieceshape[curnode]);

pts.writeToServer("4" + pn + "" + curtype + (100 + curnode) + (1000 + newpiecex) + (1000 + newpiecey));

designing = false;

}

}

}

}

public String LoadString() {

String shapestring;

shapestring = "Transform {\n" +

" children [\n" +

" Shape {\n" +

" appearance Appearance {\n";

shapestring = shapestring + " material Material { diffuseColor " + b.anim.ps.GetPiecesString(0);

shapestring = shapestring + " }\n]}\n";

return shapestring;

}

public void UpdateVRML (int f, int m, float x, float y, float z, float px, float py, float opx, float opy) {

float[] val = new float[3];

if(f==0) {

val[0] = 6.0f;

val[1] = y + py - opy;

val[2] = z - px + opx;

set_translation[m].setValue(val);

}

else if (f==1 || f==4) {

val[0] = x + px - opx;

val[1] = y + py - opy;

if (m==101){

val[2] = z;

slant_translation.setValue(val);

} else {

val[2] = 0.35f;

set_translation[m].setValue(val);

}

if(f==4) {

newpiecex = (int)val[0]; //prepare for final location to send to other players

newpiecey = (int)val[1];

}

}

else if (f==2) {

val[0] = 0.0f;

val[1] = 0.0f;

val[2] = -400.0f;

slant_translation.setValue(val);

}

else if (f==3) {

val[0] = x;

val[1] = y;

val[2] = 0.35f;

set_translation[m].setValue(val);