import java.applet.*;
import java.awt.*;
public class ca extends Applet{
Image pilt;
Graphics piltg;
asi as[]=new asi[30];
asi as2a, asi3a, asi3b, asi4a, asi4b;
asi e2[]=new asi[3];
asi e3[]=new asi[4];
asi e4[]=new asi[10];
int sees2=0, sees3=0, sees4=0;
boolean kolmlaud=false, nelilaud=false, raamvaba=true;
int sb2[]=new int[3];
int sb3[]=new int[4];
int sb4[]={100, 2, 100, 4, 100, 6, 100, 8, 100, 100};
Button n2=new Button("The Head Waiter");
Button n3=new Button("The Waiter");
Button n4=new Button("The Table");
raam rm=new raam(this);
Panel np=new Panel();
boolean sb1[]=new boolean[12];
int anr=0, avnr=0, uvnr=100, uv=100, av=100, uenr=100;
Color kaesvarv=Color.green, valivarv=Color.red;
public void init(){
sb2[0]=2; sb2[1]=100; sb2[2]=10;
sb3[0]=6; sb3[1]=100; sb3[2]=100; sb3[3]=4;
 pilt=createImage(500, 500);
 piltg=pilt.getGraphics();
piltg.setColor(Color.black);
np.setLayout(new GridLayout(1, 3));
np.add(n2); np.add(n3); np.add(n4);
np.setBackground(Color.white);
this.setLayout(new BorderLayout());
add("South", np);
asjad1();
}

void asjad1(){
 as[anr]=new asi("ruut", 30, 0, 70, 35);
 as[anr].lisatekst("Customer", 5, 15);
 as[anr].lisatekst("Arrival", 5, 26);
 anr++;
 as[anr]=new asi("ring", 120, 0, 70, 35);
 as[anr].lisatekst("Wait", 12, 15);
 as[anr].lisatekst("for table", 10, 26);
 anr++;
 as[anr]=new asi("ruut", 220, 0, 70, 35);
 as[anr].lisatekst("Be", 10, 15);
 as[anr].lisatekst("Seated", 10, 26);
 anr++;
 as[anr]=new asi("ring", 310, 0, 50, 35);
 as[anr].lisatekst("Wait", 12, 15);
 as[anr++].lisatekst("to ord.", 10, 26);
 as[anr]=new asi("ruut", 430, 0, 69, 35);
 as[anr].lisatekst("Give", 5, 15);
 as[anr].lisatekst("Order", 5, 26);
 anr++;
 as[anr]=new asi("ring", 440, 50, 50, 35);
 as[anr].lisatekst("Wait", 12, 15);
 as[anr].lisatekst("Meal", 10, 26);
 anr++;
 as[anr]=new asi("ruut", 430, 100, 69, 35);
 as[anr].lisatekst("Serve", 10, 15);
 as[anr].lisatekst("meal", 10, 26);
 anr++;
 as[anr]=new asi("ring", 450, 150, 30, 30);
 anr++;
 as[anr]=new asi("ruut", 430, 200, 69, 35);
 as[anr].lisatekst("Eat", 10, 15);
 as[anr].lisatekst("Meal", 10, 26);
 anr++;
 as[anr]=new asi("ring", 200, 200, 50, 35);
 as[anr].lisatekst("Wait", 12, 15);
 as[anr].lisatekst("Pay", 10, 26);
 anr++;
 as[anr]=new asi("ruut", 30, 200, 70, 35);
 as[anr].lisatekst("Pay", 12, 15);
 as[anr].lisatekst("for meal", 10, 26);
 anr++;
 as[anr]=new asi("ring", 0, 100, 50, 30);
 as[anr].lisatekst("World", 8, 17);
 anr++;
 for(int i=0; i<anr; i++) as[i].joonista(piltg);
 jooned1(piltg);
 ules();
}

void jooned1(Graphics g){
 nool(g, 15, 15, 30, 15);
 g.drawLine(35, 35, 35, 45);
 g.drawLine(35, 45, 55, 45);
 nool(g, 55, 45, 55, 35);
 nool(g, 100, 15, 120, 15);
 nool(g, 190, 15, 220, 15);
 nool(g, 290, 15, 310, 15);
 nool(g, 360, 15, 430, 15);
 nool(g, 460, 35, 460, 50);
 nool(g, 460, 85, 460, 100);
 nool(g, 460, 135, 460, 150);
 nool(g, 460, 180, 460, 200);
 nool(g, 430, 220, 250, 220);
 nool(g, 200, 220, 100, 220);
 g.drawLine(30, 220, 15, 220);
 nool(g, 15, 220, 15, 130);
 g.drawLine(15, 100, 15, 15);
}

void ja2(Graphics g){
g.setColor(Color.black);
 for(int i=0; i<anr; i++) as[i].joonista(piltg);
 jooned1(piltg);
 as2a=new asi("ring", 50, 120, 60, 30);
 as2a.lisatekst("Idle", 15, 12);
 as2a.lisatekst("H waiter", 8, 24);
 as2a.joonista(g);
  g.setColor(Color.blue);
 g.drawLine(110, 135, 110, 210);
 nool(g, 110, 210, 100, 210);
 g.drawLine(30, 210,  25, 210);
 g.drawLine(25, 210, 25, 140);
 nool(g, 25, 140, 50, 135);
 g.drawLine(100, 122, 200, 20);
 nool(g, 200, 20, 220, 20);
 g.drawLine(290, 20, 300, 20);
 g.drawLine(300, 20, 300, 50);
 nool(g, 300, 50, 108, 130);
piltg.setColor(Color.white);
piltg.fillRect(0, 250, 500, 250);
}

void ja3(Graphics g){
 asi3a=new asi("ring", 290, 120, 60, 30);
 asi3a.lisatekst("Idle", 15, 12);
 asi3a.lisatekst("Waiter", 8, 24);
 asi3a.joonista(g);
 asi3b=new asi("ruut", 250, 160, 70, 30);
 asi3b.lisatekst("Clear", 10, 12);
 asi3b.lisatekst("Table", 10, 24);
 asi3b.joonista(g);
 g.setColor(new Color(100, 0, 100));
 g.drawLine(310, 122, 310, 60);
 nool(g, 310, 60, 430, 30);
 g.drawLine(435, 35, 435, 45);
 nool(g, 435, 45, 340, 122);
 g.drawLine(347, 128, 400, 90);
 g.drawLine(400, 90, 432, 90);
 nool(g, 432, 90, 432, 100);
 g.drawLine(432, 135, 432, 145);
 nool(g, 432, 145, 345, 145);
 nool(g, 320, 150, 320, 160);
 g.drawLine(270, 160, 270, 135);
 nool(g, 270, 135, 290, 135);
piltg.setColor(Color.white);
piltg.fillRect(0, 250, 500, 250);

}

void ja4(Graphics g){
 asi4a=new asi("ruut", 250, 160, 70, 30);
 asi4a.lisatekst("Clear", 10, 12);
 asi4a.lisatekst("Table", 10, 24);
 asi4a.joonista(g);
 asi4b=new asi("ring", 140, 120, 60, 30);
 asi4b.lisatekst("Idle", 15, 12);
 asi4b.lisatekst("table", 8, 24);
 asi4b.joonista(g);
 g.setColor(new Color(0, 100, 100));
 g.drawLine(250, 175, 170, 175);
 nool(g, 170, 175, 170, 150);
 g.drawLine(170, 120, 170, 65);
 nool(g, 170, 65, 220, 35);
 nool(g, 290, 25, 312, 25);
 nool(g, 355, 25, 430, 25);
 nool(g, 450, 35, 450, 52);
 nool(g, 450, 82, 450, 100);
 nool(g, 450, 135, 450, 158);
 nool(g, 450, 172, 450, 200);
 nool(g, 430, 210, 320, 180);
piltg.setColor(Color.white);
piltg.fillRect(0, 250, 500, 250);
}


void je2(Graphics g){
 g.setColor(Color.black);
 e2[0]=new asi("ruut", 100, 290,  70, 40);
 e2[0].lisatekst("Show", 10, 12);
 e2[0].lisatekst("customers", 10, 24);
 e2[0].lisatekst("to table", 10, 36);
 e2[0].joonista(g);
 e2[1]=new asi("ring", 200, 295, 70, 30);
 e2[1].lisatekst("Idle", 20, 12);
 e2[1].lisatekst("H Waiter", 10, 24);
 e2[1].joonista(g);
 e2[2]=new asi("ruut", 300, 290, 70, 40);
 e2[2].lisatekst("Accept", 10, 15);
 e2[2].lisatekst("Payment", 10, 30);
 e2[2].joonista(g);
 nool(g, 202, 305, 170, 305);
 nool(g, 268, 305, 299, 305);
 nool(g, 170, 315, 202, 315);
 nool(g, 300, 315, 268, 315);
 g.drawString("The Head Waiter", 160, 360);
avnr=2;
}

void je3(Graphics g){
 g.setColor(Color.black);
 e3[0]=new asi("ruut", 100, 340,  70, 40);
 e3[0].lisatekst("Serve", 10, 15);
 e3[0].lisatekst("Meal", 10, 30);

 e3[0].joonista(g);
 e3[1]=new asi("ring", 200, 345, 70, 30);
 e3[1].lisatekst("Idle", 20, 12);
 e3[1].lisatekst("Waiter", 13, 24);
 e3[1].joonista(g);
 e3[2]=new asi("ruut", 300, 340, 70, 40);
 e3[2].lisatekst("Clear", 10, 15);
 e3[2].lisatekst("table", 10, 30);
 e3[2].joonista(g);

 e3[3]=new asi("ruut", 200, 300, 70, 30);
 e3[3].lisatekst("Take", 12, 12);
 e3[3].lisatekst("order", 10, 24);
 e3[3].joonista(g);
 nool(g, 202, 355, 170, 355);
 nool(g, 268, 355, 299, 355);
 nool(g, 170, 365, 202, 365);
 nool(g, 300, 365, 268, 365);
 nool(g, 220, 330, 220, 348);
 nool(g, 250, 348, 250, 330);
 g.drawString("The Waiter", 160, 400);
avnr=3;
}

void je4(Graphics g){
g.setColor(Color.black);
e4[0]=new asi("ring", 10, 290, 50, 30);
e4[0].lisatekst("Idle", 15, 12);
e4[0].lisatekst("Table", 10, 24);
e4[1]=new asi("ruut", 80, 260, 70, 30);
e4[1].lisatekst("Seating", 15, 20);

e4[2]=new asi("ring", 180, 260, 30, 30);
e4[2].lisatekst("Q1", 10, 20);

e4[3]=new asi("ruut", 240, 260, 70, 30);
e4[3].lisatekst("Ordering", 15, 20);

e4[4]=new asi("ring", 340, 260, 30, 30);
e4[4].lisatekst("Q2", 10, 20);

e4[5]=new asi("ruut", 420, 260, 70, 30);
e4[5].lisatekst("Serving", 15, 20);

e4[6]=new asi("ring", 420, 330, 30, 30);
e4[6].lisatekst("Q3", 10, 20);

e4[7]=new asi("ruut", 320, 330, 70, 30);
e4[7].lisatekst("Eating", 15, 20);

e4[8]=new asi("ring", 240, 330, 30, 30);
e4[8].lisatekst("Q4", 10, 20);

e4[9]=new asi("ruut", 110, 330, 70, 30);
e4[9].lisatekst("Clearing", 15, 20);
for(int i=0; i<10; i++)e4[i].joonista(g);
nool(g, 50, 295, 80, 275);
nool(g, 150, 275, 180, 275);
nool(g, 210, 275, 240, 275);
nool(g, 310, 275, 340, 275);
nool(g, 370, 275, 420, 275);
nool(g, 435, 290, 435, 330);
nool(g, 420, 345, 390, 345);
nool(g, 320, 345, 270, 345);
nool(g, 240, 345, 180, 345);
nool(g, 110, 345,  50, 315);

avnr=4;
}


void nool(Graphics g, int x1, int y1, int x2, int y2){
 g.drawLine(x1, y1, x2, y2);
double pikkus=Math.sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
double vx=(5/pikkus)*(x1-x2);
double vy=(5/pikkus)*(y1-y2);
g.drawLine((int)Math.round(x2+vx*0.7+vy*0.7), (int)Math.round(y2-vx*0.7+vy*0.7), x2, y2);
g.drawLine((int)Math.round(x2+vx*0.7-vy*0.7), (int)Math.round(y2+vx*0.7+vy*0.7), x2, y2);
}

public boolean mouseDown(Event e, int x, int y){
int unr=100, i;
if(raamvaba){
rm.hide();
if (y<250){
for(i=0; i<12; i++){if(as[i].sees(x, y)){unr=i; uvnr=1;}}
if(unr<100)if(sb1[unr])unr=100;
if(sees2>0){if(as2a.sees(x,y)){unr=1; uvnr=2;}}
if(sees3>0){if(asi3a.sees(x, y)){unr=1; uvnr=3;}
            if(asi3b.sees(x, y)&!nelilaud){unr=2; uvnr=3;}}
if(sees4>0){if(asi4a.sees(x, y)&!kolmlaud){unr=1; uvnr=4;}
            if(asi4b.sees(x, y)){unr=2; uvnr=4;}}
                 

if(unr<100){
 if((uv<100)&(uenr<100))
   if(uenr==1)as[uv].joonista(piltg, Color.black);
   if(uenr==2)as2a.joonista(piltg, Color.black);
 if(uenr==3){if(uv==1)asi3a.joonista(piltg, Color.black);
              if(uv==2)asi3b.joonista(piltg, Color.black); }
 if(uenr==4){if(uv==1)asi4a.joonista(piltg, Color.black);
             if(uv==2)asi4b.joonista(piltg, Color.black); }

 if(uvnr==1)as[unr].joonista(piltg, Color.gray);
 if(uvnr==2)as2a.joonista(piltg, Color.gray);
 if(uvnr==3){if(unr==1)asi3a.joonista(piltg, Color.gray);
             if(unr==2)asi3b.joonista(piltg, Color.gray); }
 if(uvnr==4){if(unr==1)asi4a.joonista(piltg, Color.gray);
             if(unr==2)asi4b.joonista(piltg, Color.gray); }
 uenr=uvnr;
 uv=unr;
 repaint();
 }}
 else{
    if(avnr==2){for(i=0; i<3; i++)if(e2[i].sees(x, y))unr=i;
    if(unr<100)if(sb2[unr]==80) unr=100;}
   if(avnr==3){for(i=0; i<4; i++)if(e3[i].sees(x, y))unr=i;
    if(unr<100)if(sb3[unr]==80) unr=100;
    if(unr<100) if(unr==2&kolmlaud)unr=100;}
   if(avnr==4){for(i=0; i<10; i++)if(e4[i].sees(x, y))unr=i;
    if(unr<100)if(sb4[unr]==80) unr=100;
    if(unr<100) if(unr==9&nelilaud)unr=100;}

  if(unr<100){
  if(av<100){
   if(avnr==2)if(sb2[av]!=80)e2[av].joonista(piltg, Color.black);
   if(avnr==3)if(sb3[av]!=80)e3[av].joonista(piltg, Color.black);
   if(avnr==4)if(sb4[av]!=80)e4[av].joonista(piltg, Color.black); }
     
   if(avnr==2){e2[unr].joonista(piltg, Color.gray);}

   if(avnr==3)e3[unr].joonista(piltg, Color.gray);
   if(avnr==4)e4[unr].joonista(piltg, Color.gray); 
   repaint();
   av=unr;}
 }

}
if((av<100)&&(uv<100))sobib();
 else raamvaba=true; return true;
}

void sobib(){

boolean korras=true;
boolean juures=false;
   if(avnr==2)if((sb2[av]==uv)&&(uvnr==1)){juures=true;sb2[av]=80; sb1[uv]=true;
    e2[av].joonista(piltg, Color.green); as[uv].joonista(piltg, Color.green);
for(int i=0; i<3; i++)if(sb2[i]<80)korras=false;
if(korras){ja2(piltg); sees2=1; avnr=0; ules();}
}
else{ e2[av].joonista(piltg, Color.black); as[uv].joonista(piltg, Color.black);}

   if(avnr==3){if((sb3[av]==uv)&&(uvnr==1)){juures=true; sb3[av]=80; 
sb1[uv]=true;
    e3[av].joonista(piltg, Color.green); as[uv].joonista(piltg, Color.green);
}
else{e3[av].joonista(piltg, Color.black); as[uv].joonista(piltg,Color.black);
}
if((uv==1)&&(uvnr==4)&&(av==2)){juures=true; kolmlaud=true;e3[2].joonista(piltg, kaesvarv);
asi4a.joonista(piltg, kaesvarv);
 }
for(int i=0; i<4; i++){if(sb3[i]<80)korras=false;}
if((sees4>0)&&(kolmlaud==false))korras=false;
if(korras){ja3(piltg); sees3=1; avnr=0; ules();}
}
   if(avnr==4){if((sb4[av]==uv)&&(uvnr==1)){juures=true; sb4[av]=80; sb1[uv]=true;
    e4[av].joonista(piltg, Color.green); as[uv].joonista(piltg, Color.green);}
else{e4[av].joonista(piltg, Color.black); as[uv].joonista(piltg, Color.black);}
if((uv==2)&&(uvnr==3)&&(av==9)){juures=true; nelilaud=true;e4[9].joonista(piltg, kaesvarv);
asi3b.joonista(piltg, kaesvarv);

}
for(int i=0; i<10; i++){if(sb4[i]<80)korras=false;}
if((sees3>0)&&(nelilaud==false))korras=false;
if(korras){ja4(piltg); sees4=1; ules();}
}
if(!juures){raamvaba=false; rm.setText("Not compatible");
   if(uenr==1)as[uv].joonista(piltg, Color.black);
   if(uenr==2)as2a.joonista(piltg, Color.black);
 if(uenr==3){if(uv==1)asi3a.joonista(piltg, Color.black);
              if(uv==2)asi3b.joonista(piltg, Color.black); }
 if(uenr==4){if(uv==1)asi4a.joonista(piltg, Color.black);
             if(uv==2)asi4b.joonista(piltg, Color.black); }
             }
if(korras&juures){raamvaba=false; rm.setText("  ***  OK  ***");}
else if(juures){raamvaba=false; rm.setText(" OK. Continue!");}
if(sees2>0&sees3>0&sees4>0){raamvaba=false; rm.setText("Work finished");}
av=100; uv=100;
}

public void paint(Graphics g){
 g.drawImage(pilt, 0, 0, this);
}
public void update(Graphics g){paint(g);}
public boolean action(Event e, Object arg){
 if(e.target==n2)je2(piltg);
 if(e.target.equals(n3))je3(piltg);
 if(e.target.equals(n4))je4(piltg);
 n2.hide(); n3.hide(); n4.hide();
repaint();
return true;
}

public void ules(){
int i;
piltg.setColor(Color.black);
 if(sees2==0)n2.show(); else as2a.joonista(piltg);
 if(sees3==0)n3.show(); else {asi3a.joonista(piltg); asi3b.joonista(piltg);}
 if(sees4==0)n4.show(); else {asi4a.joonista(piltg); asi4b.joonista(piltg);}
 for (i=0; i<12; i++)as[i].joonista(piltg);
 for (i=0; i<12; i++)sb1[i]=false;
}

}


class raam extends Frame{
ca ap;
Label lb=new Label("");
Button nupp=new Button("OK");
Panel p=new Panel();
public raam(ca apl){
 ap=apl;
 setTitle("Message");
 this.setBackground(Color.white);
 p.setLayout(new BorderLayout());
 p.add("Center", lb);
 p.add("East", nupp);
 add("North", p);
resize(200, 50);
}
public void setText(String s){
 lb.setText(s);
pack();
resize(200, 80);
this.show();
nupp.requestFocus();
}
/*public boolean lostFocus(Event e, Object arg){nupp.requestFocus();
 return true;}*/
public boolean action(Event e, Object arg){
 if(e.target==nupp){this.hide();ap.raamvaba=true; }
return true;
}
}