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TicTacToe

GREYcells Tic-Tac-Toe 
/************************************************************************/
/* 		Designed & developed by J.V.RAVICHANDRAN.               */
/*		Started on 02/10/1997.					*/
/*		Author's name --  J.V.RAVICHANDRAN	     		*/
/*		Company's name  -- Semantix Computers. 			*/
/*		Company's address -- B-10, Triveni Apartments, 		*/
/*				     Vikas puri, New Delhi - 110018. 	*/
/*		Completed on -- 10th October, 1997. 			*/
/*		Name of software -- GREYcells Tic-tac-toe  		*/
/*		Nature of software -- Game 				*/
/************************************************************************/
#include <\tc\library\graphics.h> 
#include <\tc\library\process.h> 
#include <\tc\library\io.h>
#include <\tc\library\dos.h>
#include <\tc\library\conio.h>
#include <\tc\library\string.h>
#include <\tc\library\stdlib.h>
#include <\tc\library\stdio.h>
#include <\tc\library\alloc.h>
#include <\tc\library\fcntl.h>
#include <\tc\library\stat.h>
#define ALT 1
#define ASCII 1
int gdriver = VGA, gmode=VGAHI, err_code,time_spent=0,boardvisible=0,counter=0;
int nkey,ikey,key,ik=1,boxrr=150,boxcc=175,boxr=125,boxc=150,ctr=0,cx=125,rx=25,start=0;
int player=0,color=15,ir,once=0,entered=1,rctr,menuflag;
int playertype1=0, playertype2=0,checkxflag=0,checkoflag=0,length,handle,handl;
int checkxflag,checkoflag,checkx1flag,checko1flag,menuitem=0,firsttime=0;
char str,firstletter,secondletter;
int playerno1=0, playerno2=0, err_flag=0,gameover=0,checkflag=0,once;
int menucol,menurow,menucoll,menuroww,item,player1lastcounter=10,player2lastcounter=0;
int messageboxc,messageboxr,messageboxcc,messageboxrr,rctr=0;
void *sbox;
int sctr=0,bctr=0,count,counter,lastcount,lastcounter;
int menuon=0,lastrctr,menuerror=0,sharecounter=0;
unsigned size;
int oxx1,oxx2,oxx3,oxx4,oxx5,oxx6,oxx7,oxx8,oxx9;
int letter3=0,letter4=1,winflag=0;
char *box[9],*playername[20];
int letter1, letter2,letter;
char score1,score2;
int soundon=1,incolor=12,soundctr,lettercolor=15,ct,midx,mee=0;
char terminator,leng,newstr;
main(){
	initgraph(&gdriver, &gmode, "");
	err_code = graphresult();
	if (err_code !=grOk)
	{
	printf("Graphic initialization error...\n");
		time_spent=0;
		while (time_spent<50){
			time_spent++;
			delay(25);}
	exit(0);
	 }
			ct=access("delaytic.$$$",0);
			if (ct==-1){
			_fmode=O_BINARY;
			handle=_creat("delaytic.$$$", FA_HIDDEN);
			lseek(handle, 0L, SEEK_SET);
			counter=1;
			sprintf(&terminator,"%d",counter);
			_write(handle,&terminator,4);}
			ct=access("termtic.$$$",0);
			if (ct==-1){
			setfillstyle(SOLID_FILL,15);
			bar(100,100,400,200);
			setfillstyle(SOLID_FILL,0);
			bar(101,101,399,120);
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			setcolor(15);
			outtextxy(220,111,"GREYcells");
			setcolor(0);
			outtextxy(110,135,"Intruder alert ! Please contact");
			outtextxy(110,150,"the developer immediately.");
			sound(100);
			delay(75);
			nosound();
			getch();
			cleardevice();
			closegraph();
			_close(handle);
			exit(0);
			ik=1;}
			if (ct==0){
			handle=open("termtic.$$$", O_RDONLY | O_BINARY);
			lseek(handle, 0L, SEEK_SET);
			counter=0;
			leng=filelength(handle);
			sscanf(&terminator,"%d",&leng);
			while (!eof(handle)){
			read(handle,&terminator,4);}
			}
			chmod("termtic.$$$",S_IWRITE);
			unlink("termtic.$$$");
			_fmode=O_BINARY;
			handle=_creat("termtic.$$$", FA_HIDDEN);
			lseek(handle, 0L, SEEK_SET);
			sscanf(&terminator,"%d",&counter);
			counter++;
			sprintf(&terminator,"%d",counter);
			_write(handle,&terminator,4);
			if (counter<28){
			ik=0;}
			if (counter>28){
			sound(100);
			delay(25);
			sound(150);
			delay(25);
			sound(125);
			delay(25);
			nosound();
			alertformoney();
			getch();
			cleardevice();
			chmod("termtic.$$$",S_IREAD);
			_close(handle);
			ik=0;
			sharecounter=1;}
	if (ik<1){
	firstscreen();
	menu();
	cx=400;
	rx=250;
	color=15;}
while (ik<1){
	key=getch();
	switch(key){
		case 32:
			if (menuon==2 && item==1){
			sound(100);
			delay(50);
			nosound();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			setcolor(15);
			soundon++;
			if (soundon>1){
			soundon=0;}
			if (soundon==1){
			setcolor(7);
			outtextxy(menucol+75,menurow+13,"Sound ( OFF )");
			setcolor(15);
			outtextxy(menucol+75,menurow+13,"Sound ( ON )");}
			if (soundon==0){
			setcolor(7);
			outtextxy(menucol+75,menurow+13,"Sound ( ON )");
			setcolor(15);
			outtextxy(menucol+75,menurow+13,"Sound ( OFF )");}
			}
			break;
		case ALT==1:
		case 129:
			if (menuon==0){
			menucol=15;
			menurow=14;
			menucoll=164;
			menuroww=57;
			messageboxc=menucol;
			messageboxr=menurow;
			messageboxcc=menucoll;
			messageboxrr=menuroww;
			savebox();
			dropdownmenu();
		
			setcolor(12);
			settextstyle(DEFAULT_FONT,VERT_DIR,1);
			settextjustify(0,1);
			outtextxy(20,11,"0");
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			setcolor(8);
			if (soundon==1){
			outtextxy(menucol+75,menurow+13,"Sound ( ON )");}
			if (soundon==0){
			outtextxy(menucol+75,menurow+13,"Sound ( OFF )");}
			outtextxy(menucol+75,menurow+33,"Levels (1-3)");
			item=0;
			menuon=2;}
			break;
		case 35:
			if (menuon==0){
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			cx=120;
			setcolor(12);
			outtextxy(cx,43,"H");
			setcolor(15);
			cx+=textwidth("H");
			cx=cx+1;
			outtextxy(cx,43,"elp");
			menuitem=2;
			menuflag=0;
			menuon=1;}
			break;
		case 34:
			if (menuon==0){
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			cx=20;
			setcolor(12);
			outtextxy(cx,43,"G");
			cx+=textwidth("G");
			cx=cx+1;
			setcolor(15);
			outtextxy(cx,43,"ame");
			menuitem=1;
			menuflag=0;
			menuon=1;}
			break;
		case 27:
			if (menuon==2){
			restorebox();
			setcolor(7);
			settextstyle(DEFAULT_FONT,VERT_DIR,1);
			settextjustify(0,1);
			outtextxy(20,11,"0");
			menuon=0;}
			if (menuon==0){
			sound(50);
			delay(50);
			nosound();}
			if (menuon==1 && menuflag==1 && menuitem==1){
			restorebox();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			cx=20;
			setcolor(15);
			outtextxy(cx,43,"G");
			cx+=textwidth("G");
			cx=cx+1;
			setcolor(7);
			outtextxy(cx,43,"ame");
			menuon=0;
			menuflag=0;
			item=0;
			menuitem=1;
			}
			if (menuon==1 && menuflag==1 && menuitem==2){
			restorebox();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			cx=120;
			setcolor(15);
			outtextxy(cx,43,"H");
			setcolor(7);
			cx+=textwidth("H");
			cx=cx+1;
			outtextxy(cx,43,"elp");
			menuon=0;
			menuflag=0;
			menuitem=1;
			item=0;
			}
			break;
		case 75:
		if (start==4 && menuon==0){
		/* left arrow */
			boxoff();
			if (boxc>150){
			boxc=boxc-100;
			boxcc=boxcc-100;}
			if (boxc<150){
			boxc=150;
			boxcc=175;}
			boxon();}
			break;
		case 77:
		/* right arrow */
		if (start==4 && menuon==0){
			boxoff();
			if (boxc==150){
			ctr=0;
			boxc=210;
			boxcc=235;}
			if (boxcc<420 && ctr>0){
			boxc=boxc+100;
			boxcc=boxcc+100;}
			boxon();
			}
			ctr++;
			break;
		case 80:
			if (menuon==2){
			if (item==0){
			threed_menu();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			if (soundon==1){
			setcolor(7);
			outtextxy(menucol+75,menurow+13,"Sound ( OFF )");
			setcolor(15);
			outtextxy(menucol+75,menurow+13,"Sound ( ON )");}
			if (soundon==0){
			setcolor(7);
			outtextxy(menucol+75,menurow+13,"Sound ( ON )");
			setcolor(15);
			outtextxy(menucol+75,menurow+13,"Sound ( OFF )");}
			}
			if (item==1){
			twod_menu();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			setcolor(8);
			if (soundon==1){
			outtextxy(menucol+75,menurow+13,"Sound ( ON )");}
			if (soundon==0){
			outtextxy(menucol+75,menurow+13,"Sound ( OFF )");}
			setlinestyle(SOLID_LINE,1,1);
			threed_menuitem2();
			setcolor(15);
			outtextxy(menucol+75,menurow+33,"Levels (1-3)");}
			if (item==2){
			twod_menuitem2();
			setcolor(8);
			outtextxy(menucol+75,menurow+33,"Levels (1-3)");}
			sound(20);
			delay(75);
			nosound();
			item++;
			if (item==3){
			item=0;}
			}
			if (menuon==1 && menuflag==1 && menuitem==1){
			if (item==0){
			threed_menu();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			setcolor(15);
			outtextxy(menucol+50,menurow+13,"Start");}
			if (item==1){
			twod_menu();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			setcolor(8);
			outtextxy(menucol+50,menurow+13,"Start");
			setlinestyle(SOLID_LINE,1,1);
			threed_menuitem2();
			setcolor(15);
			outtextxy(menucol+50,menurow+33,"Quit");}
			if (item==2){
			twod_menuitem2();
			setcolor(8);
			outtextxy(menucol+50,menurow+33,"Quit");}
			sound(20);
			delay(75);
			nosound();
			item++;
			if (item==3){
			item=0;}
			}
			if (menuon==1 && menuflag==1 && menuitem==2){
			if (item==0){
			threed_menu();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			setcolor(15);
			outtextxy(menucol+75,menurow+13,"How to use...");}
			if (item==1){
			twod_menu();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			setcolor(8);
			outtextxy(menucol+75,menurow+13,"How to use...");
			setlinestyle(SOLID_LINE,1,1);
			threed_menuitem2();
			setcolor(15);
			outtextxy(menucol+70,menurow+33,"About");}
			if (item==2){
			twod_menuitem2();
			setcolor(8);
			outtextxy(menucol+70,menurow+33,"About");}
			sound(20);
			delay(75);
			nosound();
			item++;
			if (item==3){
			item=0;}
			}
			if (menuon==1 && menuitem==1 && menuflag==0){
			menucol=20;
			menurow=48;
			menucoll=120;
			menuroww=91;
			messageboxc=menucol;
			messageboxr=menurow;
			messageboxcc=menucoll;
			messageboxrr=menuroww;
			savebox();
			dropdownmenu();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			setcolor(8);
			outtextxy(menucol+50,menurow+13,"Start");
			outtextxy(menucol+50,menurow+33,"Quit");
			item=0;
			menuflag=1;}
			if (menuon==1 && menuitem==2 && menuflag==0){
			menucol=120;
			menurow=48;
			menucoll=259;
			menuroww=91;
			messageboxc=menucol;
			messageboxr=menurow;
			messageboxcc=menucoll;
			messageboxrr=menuroww;
			savebox();
			dropdownmenu();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(1,1);
			setcolor(8);
			outtextxy(menucol+75,menurow+13,"How to use...");
			outtextxy(menucol+70,menurow+33,"About");
			item=0;
			menuflag=1;}
			if (start==4 && menuon==0){
			if (boxc>150){
			boxoff();
			if (boxrr<320){
			boxr=boxr+85;
			boxrr=boxrr+85;}
			}
			boxon();
			}
			break;
		case 72:
			if (start==4 && menuon==0){
			boxoff();
			if (boxr>150){
			boxr=boxr-85;
			boxrr=boxrr-85;
			}
			boxon();}
			break;			
		case 88:
		/*  caps  x */
		if (start==4 && checkxflag==0 && menuon==0){
			checkflag=1;
			boxoff();
			mee=2;
			error();
			if (gameover==-1){gameover=0;checkxflag=0;}
			checkflag=0;}
		if (start==4 && checkxflag==1 && menuon==0){
			boxoff();
		if (playertype1==1 || playertype2==1){
			if (winflag==0){
			scanboxes();
			setstatus();
			boxrr=150;
			boxcc=175;
			boxr=125;
			boxc=150;
			boxon();}}
			if (winflag==0 && err_flag==0){
			setplayer();}
			if (winflag==1 && err_flag==0){
			start=5;}
			}
		if (playertype2==2 && winflag==0 && err_flag==0){
			once=0;
			computer_o();
			writectext();
			if (once==2){display_win();}
			boxrr=150;
			boxcc=175;
			boxr=125;
			boxc=150;
			boxon();
			if (winflag==0 && err_flag==0){
			setplayer();}
			if (winflag==1 && err_flag==0){
			start=5;}}
			if (entered>=9 && winflag==0 && gameover==0){
			gameover=1;
			error();
			start=5;}
			break;
		case 79:
		/* caps O*/
			if (start==4 && checkoflag==0 && menuon==0){
			checkflag=1;
			boxoff();
			mee=2;
			error();			
			checkflag=0;}
		if (start==4 && checkoflag==1 && menuon==0){
			boxoff();
		if (playertype1==1 || playertype2==1){
			if (winflag==0){
			scanboxes();
			setstatus();
			boxrr=150;
			boxcc=175;
			boxr=125;
			boxc=150;
			boxon();}}
			if (winflag==0 && err_flag==0){
			setplayer();}
			if (winflag==1 && err_flag==0){
			start=5;}
			}
			if (playertype2==2 && winflag==0){
			once=0;
			computer_o();
			writeotext();
			if (once==2){display_win();}
			boxrr=150;
			boxcc=175;
			boxr=125;
			boxc=150;
			boxon();
			if (winflag==0 && err_flag==0){
			setplayer();}
			if (winflag==1 && err_flag==0){
			start=5;}}
			if (entered>=9 && winflag==0 && gameover==0){
			gameover=1;
			error();
			start=5;}
			break;
		case 13:
			if (menuon==1 && menuitem==1){
			restorebox();
			if (item==0){
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			cx=20;
			setcolor(15);
			outtextxy(cx,43,"G");
			cx+=textwidth("G");
			cx=cx+1;
			setcolor(7);
			outtextxy(cx,43,"ame");}
			if (item==1){
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			cx=20;
			setcolor(15);
			outtextxy(cx,43,"G");
			cx+=textwidth("G");
			cx=cx+1;
			setcolor(7);
			outtextxy(cx,43,"ame");
			gameover=0;			
			clearboard();
			boxrr=150;
			boxcc=175;
			boxr=125;
			boxc=150;
			ctr=1;
			while (ctr<10){strcpy(&box[ctr],"2");ctr++;}
			ctr=1;
			entered=2;
			setplayer();
			entered=1;
			player=1;
			if (letter1==1){
			checkxflag=1;
			lettercolor=15;
			checkoflag=0;}
			if (letter1==2){
			checkxflag=0;
			lettercolor=12;
			checkoflag=1;}
			start=4;
			item=0;
			menuflag=0;
			winflag=0;}
			if (item==2){
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			cx=20;
			setcolor(15);
			outtextxy(cx,43,"G");
			cx+=textwidth("G");
			cx=cx+1;
			setcolor(7);
			outtextxy(cx,43,"ame");
			quit();
			ik=1;
			}
			menuon=0;}
			if (menuon==1 && menuitem==2){
			restorebox();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			cx=120;
			setcolor(15);
			outtextxy(cx,43,"H");
			setcolor(7);
			cx+=textwidth("H");
			cx=cx+1;
			outtextxy(cx,43,"elp");
			if (item==0){
			sound(200);
			delay(25);
			nosound();}
			if (item==1){
			howtouse();}
			if (item==2){
			about();}
			menuon=0;}
			if (menuon==2){
			restorebox();
			setcolor(7);
			settextstyle(DEFAULT_FONT,VERT_DIR,1);
			settextjustify(0,1);
			outtextxy(20,11,"0");
			if (item==2){
			shareware();}
			menuon=0;}
			break;
	}
	}
cleardevice();
closegraph();
return 0;}
int scanboxes(){
	sscanf(&box[1],"%d",&oxx1);
	sscanf(&box[2],"%d",&oxx2);
	sscanf(&box[3],"%d",&oxx3);
	sscanf(&box[4],"%d",&oxx4);
	sscanf(&box[7],"%d",&oxx7);
	sscanf(&box[5],"%d",&oxx5);
	sscanf(&box[6],"%d",&oxx6);
	sscanf(&box[8],"%d",&oxx8);
	sscanf(&box[9],"%d",&oxx9);
return 1;}
int computer_o(){
	scanboxes();
	if (entered==2){
	if (oxx5==2 && once==0){
	/*  capture box5 */
	boxfive();
	once=1;}
	if (oxx5==0 && once==0){
	if (oxx1==2){
	/*  capture box1 */
	boxone();}
	once=1;}
	}
	if (entered==4 || entered==5){
	defensivemoves();
	if (once==0){
	firstoffence();}
}
	if (entered>5){
	if (once==0){
	offensivemoves();}
	if (once==0){
	defensivemoves();}
	if (once==0){
	firstoffence();}
	}
	if (once!=0){writeforcomputer();scanboxes();checkcomputerwin();}
return (once);}

 

int firstoffence(){
/* offensive moves for computer*/
if (oxx1==1 && oxx2==2 && once==0){
boxtwo();once=1;}
if (oxx1==1 && oxx3==2 && once==0){
boxthree();once=1;}
if (oxx5==1 && oxx2==2 && once==0){
boxtwo();once=1;}
if (oxx5==1 && oxx3==2 && once==0){
boxthree();once=1;}
if (oxx5==1 && oxx4==2 && once==0){
boxfour();once=1;}
if (oxx5==1 && oxx6==2 && once==0){
boxsix();once=1;}
if (oxx5==1 && oxx9==2 && once==0){
boxnine();once=1;}
if (oxx5==1 && oxx7==2 && once==0){
boxseven();once=1;}
if (oxx1==1 && oxx4==2 && once==0){
boxfour();once=1;}
if (oxx1==1 && oxx7==2 && once==0){
boxseven();once=1;}
if (oxx1==1 && oxx9==2 && once==0){
boxnine();once=1;}
if (oxx1==1 && oxx5==2 && once==0){
boxfive();once=1;}
return (once);}
int offensivemoves(){
/* offensive moves for computer*/
if (oxx1==1 && oxx2==1 && oxx3==2 && once==0){
boxthree();once=2;}
if (oxx1==1 && oxx4==1 && oxx7==2 && once==0){
boxseven();once=2;}
if (oxx1==1 && oxx7==1 && oxx4==2 && once==0){
boxfour();once=2;}
if (oxx1==1 && oxx9==1 && oxx5==2 && once==0){
boxfive();once=2;}
if (oxx2==1 && oxx3==1 && oxx1==2 && once==0){
boxone();once=2;}
if (oxx1==1 && oxx3==1 && oxx2==2 && once==0){
boxtwo();once=2;}
if (oxx4==1 && oxx7==1 && oxx1==2 && once==0){
boxone();once=2;}
if (oxx2==1 && oxx5==1 && oxx8==2 && once==0){
boxeight();once=2;}
if (oxx2==1 && oxx8==1 && oxx5==2 && once==0){
boxfive();once=2;}
if (oxx5==1 && oxx8==1 && oxx2==2 && once==0){
boxtwo();once=2;}
if (oxx3==1 && oxx6==1 && oxx9==2 && once==0){
boxnine();once=2;}
if (oxx6==1 && oxx9==1 && oxx3==2 && once==0){
boxthree();once=2;}
if (oxx3==1 && oxx9==1 && oxx6==2 && once==0){
boxsix();once=2;}
if (oxx4==1 && oxx5==1 && oxx6==2 && once==0){
boxsix();once=2;}
if (oxx5==1 && oxx6==1 && oxx4==2 && once==0){
boxfour();once=2;}
if (oxx4==1 && oxx6==1 && oxx5==2 && once==0){
boxfive();once=2;}
if (oxx7==1 && oxx8==1 && oxx9==2 && once==0){
boxnine();once=2;}
if (oxx7==1 && oxx9==1 && oxx8==2 && once==0){
boxeight();once=2;}
if (oxx8==1 && oxx9==1 && oxx7==2 && once==0){
boxseven();once=2;}
if (oxx1==1 && oxx5==1 && oxx9==2 && once==0){
boxnine();once=2;}
if (oxx5==1 && oxx9==1 && oxx1==2 && once==0){
boxone();once=2;}
if (oxx1==1 && oxx9==1 && oxx5==2 && once==0){
boxfive();once=2;}
if (oxx3==1 && oxx5==1 && oxx7==2 && once==0){
boxseven();once=2;}
if (oxx3==1 && oxx7==1 && oxx5==2 && once==0){
boxfive();once=2;}
if (oxx7==1 && oxx5==1 && oxx3==2 && once==0){
boxthree();once=2;}
return (once);}
int defensivemoves(){
	/* Defensive moves for computer*/
		if (oxx7==0 && oxx4==0 && oxx1==2 && once==0){
		boxone();once=1;}
		if (oxx1==0 && oxx2==0 && oxx3==2 && once==0){
		boxthree();once=1;}
		if (oxx5==0 && oxx3==0 && oxx7==2 && once==0){
		boxseven();once=1;}
		if (oxx5==0 && oxx7==0 && oxx3==2 && once==0){
		boxthree();once=1;}
		if (oxx1==0 && oxx4==0 && oxx7==2 && once==0){
		boxseven();once=1;}
		if (oxx1==0 && oxx7==0 && oxx4==2 && once==0){
		boxfour();once=1;}
		if (oxx3==0 && oxx7==0 && oxx5==2 && once==0){
		boxfive();once=1;}
		if (oxx2==0 && oxx5==0 && oxx8==2 && once==0){
		boxeight();once=1;}
		if (oxx2==0 && oxx3==0 && oxx1==2 && once==0){
		boxone();once=1;}
		if (oxx2==0 && oxx8==0 && oxx5==2 && once==0){
		boxfive();once=1;}
		if (oxx5==0 && oxx8==0 && oxx2==2 && once==0){
		boxtwo();once=1;}
		if (oxx3==0 && oxx6==0 && oxx9==2 && once==0){
		boxnine();once=1;}
		if (oxx3==0 && oxx9==0 && oxx6==2 && once==0){
		boxsix();once=1;}
		if (oxx6==0 && oxx9==0 && oxx3==2 && once==0){
		boxthree();once=1;}
		if (oxx4==0 && oxx5==0 && oxx6==2 && once==0){
		boxsix();once=1;}
		if (oxx4==0 && oxx6==0 && oxx5==2 && once==0){
		boxfive();once=1;}
		if (oxx6==0 && oxx5==0 && oxx4==2 && once==0){
		boxfour();once=1;}
		if (oxx7==0 && oxx8==0 && oxx9==2 && once==0){
		boxnine();once=1;}
		if (oxx7==0 && oxx9==0 && oxx8==2 && once==0){
		boxeight();once=1;}
		if (oxx9==0 && oxx8==0 && oxx7==2 && once==0){
		boxseven();once=1;}
return (once);}
int drawboard(){
	setfillstyle(SOLID_FILL,8);
	bar(0,0,640,480);
	setlinestyle(SOLID_LINE,1,1);
	setcolor(15);
	line(5,50,634,50);
	setcolor(0);
	line(4,21,4,480);
	line(0,475,640,475);
	line(636,21,636,480);
	setfillstyle(SOLID_FILL,0);
	bar(1,1,639,20);
	setcolor(15);
	settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
	settextjustify(0,1);
	outtextxy(290,12,"Tic-tac-toe");
	setcolor(7);
	settextstyle(DEFAULT_FONT,VERT_DIR,1);
	settextjustify(0,1);
	outtextxy(20,11,"0");
	settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
	settextjustify(0,1);
	cx=20;
	setcolor(15);
	outtextxy(cx,43,"G");
	cx+=textwidth("G");
	cx=cx+1;
	setcolor(7);
	outtextxy(cx,43,"ame");
	cx=120;
	setcolor(15);
	outtextxy(cx,43,"H");
	setcolor(7);
	cx+=textwidth("H");
	cx=cx+1;
	outtextxy(cx,43,"elp");
	outtextxy(420,27,"Player -");
	outtextxy(420,43,"Score -");
	outtextxy(45,450,"Player 1 -");
	outtextxy(45,465,"Score -");
	outtextxy(445,450,"Player 2 -");
	outtextxy(445,465,"Score -");
	setcolor(15);
	/* board */
	setlinestyle(SOLID_LINE,1,3);
	setcolor(15);
	line(200,175,450,175);
	line(200,275,450,275);
	line(275,100,275,350);
	line(375,100,375,350);
	setfillstyle(SOLID_FILL,8);
	bar(520,23,625,47);
	setcolor(15);
	settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
	settextjustify(0,1);
	counter=0;
	cx=495;
	while (counter<player1lastcounter){
	outtextxy(cx,27,&playername[counter]);
	cx+=textwidth(&playername[counter]);
	counter++;}
	setcolor(12);
	outtextxy(285,460,"LEVEL -");
	setcolor(15);
	if (playertype1==1){
	outtextxy(140,450,"HUMAN");}
	if (playertype1==2){
	outtextxy(140,450,"COMPUTER");}
	if (playertype2==1){
	outtextxy(535,450,"HUMAN");
	outtextxy(355,460," ");}
	if (playertype2==2){
	outtextxy(535,450,"COMPUTER");
	outtextxy(355,460,"3");}
	if (letter1==1){
	lettercolor=15;}
	if (letter1==2){
	lettercolor=12;}
	boardvisible=1;
	entered=1;
	player=1;
	if (letter1==1){
	checkxflag=1;
	lettercolor=15;
	checkoflag=0;}
	if (letter1==2){
	checkxflag=0;
	lettercolor=12;
	checkoflag=1;}
	gameover=0;
	checkflag=0;
	boxrr=150;
	boxcc=175;
	boxr=125;
	boxc=150;
	boxon();
	setcolor(15);
	outtextxy(510,45,&score1);
	ctr=1;
	while (ctr<10){strcpy(&box[ctr],"2");ctr++;}
	ctr=1;
return 1;}
int boxoff(){
	if (boxc==150){
	setfillstyle(SOLID_FILL,8);
	bar(boxc,boxr,boxcc,boxrr);}
	if (boxc>150){
	setlinestyle(SOLID_LINE,1,1);
	setcolor(8);
	line(boxc,boxr,boxcc+5,boxr);
	line(boxc,boxr,boxc,boxrr);
	line(boxc,boxrr,boxcc+5,boxrr);
	line(boxcc+5,boxr,boxcc+5,boxrr);}
return 1;}
int boxon(){
	if (boxc==150){
	setfillstyle(SOLID_FILL,15);
	bar(boxc,boxr,boxcc,boxrr);	
	setfillstyle(SOLID_FILL,0);
	bar(boxc+1,boxr+1,boxcc-1,boxrr-1);}
	if (boxc>150){
	setlinestyle(SOLID_LINE,1,1);
	setcolor(15);
	line(boxc,boxr,boxcc+5,boxr);
	line(boxc,boxr,boxc,boxrr);
	line(boxc,boxrr,boxcc+5,boxrr);
	line(boxcc+5,boxr,boxcc+5,boxrr);
	}
return 1;}
int clearboard(){
	setfillstyle(SOLID_FILL,8);
	bar(25,100,575,400);
	boardvisible=0;
	/* board */
	setlinestyle(SOLID_LINE,1,3);
	setcolor(15);
	line(200,175,450,175);
	line(200,275,450,275);
	line(275,100,275,350);
	line(375,100,375,350);
	boardvisible=1;
	entered=1;
	player=1;
	gameover=0;
	checkflag=0;
	boxrr=150;
	boxcc=175;
	boxr=125;
	boxc=150;
	boxon();
	setfillstyle(SOLID_FILL,8);
	bar(520,23,625,47);
	setcolor(15);
	settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
	settextjustify(0,1);
	counter=0;
	cx=525;
	while (counter<player1lastcounter){
	outtextxy(cx,27,&playername[counter]);
	cx+=textwidth(&playername[counter]);
	counter++;}
	outtextxy(525,45,&score1);
return 1;}
int name(){
	settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
	settextjustify(0,1);
	while (entered!=2){
	nkey=getch();
	switch(nkey){
		case 59:
			if (rx==322 || rx==346 || rx==325 || rx==350){
			messageboxc=125;
			messageboxr=125;
			messageboxcc=525;
			messageboxrr=225;
			midx=295;
			savebox();
			errorscreen();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			setusercharsize(1,3,1,1);
			settextjustify(0,1);
			setcolor(12);
			outtextxy(messageboxc+5,messageboxr+5,"Help");
			playernamehelp();
			rctr=0;
			getch();
			restorebox();
			}
			break;
		case 8:
			if (rx==325 || rx==322){
			if (rctr>0){
			rctr--;}
			if (rctr==0){
			rctr=0;}}
			if (rx==350){
			if (rctr>player1lastcounter){
			rctr--;}}
			curs_off();
			cx-=textwidth(&nkey);
			setfillstyle(SOLID_FILL,8);
			bar(cx,rx-10,cx+10,rx+10);
			if (cx<=250){
			cx=250;}
			curs_on();
			break;
		case 13:
			if (playertype1==1 && playertype2==1 && rctr==0){
			messageboxc=125;
			messageboxr=125;
			messageboxcc=450;
			messageboxrr=200;
			midx=265;
			sound(100);
			delay(75);
			nosound();
			savebox();
			errorscreen();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			setusercharsize(1,3,1,1);
			settextjustify(0,1);
			setcolor(12);
			outtextxy(messageboxc+5,messageboxr+5,"Error");
			setcolor(0);
			outtextxy(messageboxc+5,messageboxr+35,"Mandatory to enter a name.");
			getch();
			restorebox();
			rctr=0;
			curs_off();
			if (rx==325 || rx==322){
			cx=250;
			rx=322;
			curs_on();}
			if (rx==350 || rx==346){
			cx=250;
			rx=346;
			curs_on();}
			err_flag=1;}
			if (playertype1==2 && playertype2==1 && rctr>0){
			curs_off();
			rctr=0;
			cx=250;
			rx=350;}
			if (playertype1==1 && rctr>0 && entered==1 && err_flag==0){
			if (rx==325 || rx==322){
			curs_off();
			player1lastcounter=rctr;
			if (playertype2==1){
			cx=250;
			rx=350;}
			curs_on();
			entered=0;}}
			if (playertype2==2 && err_flag==0){
			curs_off();
			entered=2;}
			if (playertype2==1 && err_flag==0 && rctr>0 && entered==1){
			if (rx==346 || rx==350){
			player2lastcounter=player1lastcounter+rctr;
			rctr=0;
			curs_off();
			entered=2;}}
			err_flag=0;
			break;
		default:		
			if (start==0){
			if (rctr<10 && rx<350){
			writename();}
			if (rctr>=player1lastcounter && rctr<20 && rx==350){
			writename();}
			}
			break;
		}
		}
return 1;}

 

int writename(){
	entered=1;
	err_flag=0;
	curs_off();
	setcolor(15);
	outtextxy(cx,rx,&nkey);
	cx+=textwidth(&nkey);
	curs_on();
	strcpy(&playername[rctr],&nkey);
	rctr++;
return (rctr);}
int menu(){
drawmenuscreen();
while (once<4){
	incolor++;
	if (incolor>15){
	incolor=1;}
	setcolor(incolor);
	settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
	settextjustify(0,1);			
	outtextxy(10,35,"Press <F1> for help");
	outtextxy(300,13,"GREYcells");
	ikey=getch();
	switch(ikey){
		case 59:
			if (rx==50 || rx==75){
			messageboxc=125;
			messageboxr=125;
			messageboxcc=515;
			messageboxrr=250;
			midx=295;
			savebox();
			errorscreen();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			setusercharsize(1,3,1,1);
			settextjustify(0,1);
			setcolor(12);
			outtextxy(messageboxc+5,messageboxr+5,"Help");
			scrollplayerhelp();
			getch();
			restorebox();
			}
			if (rx==250 || rx==275){
			messageboxc=125;
			messageboxr=125;
			messageboxcc=475;
			messageboxrr=275;
			midx=275;
			savebox();
			errorscreen();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			setusercharsize(1,3,1,1);
			settextjustify(0,1);
			setcolor(12);
			outtextxy(messageboxc+5,messageboxr+5,"Help");
			playerletterhelp();
			getch();
			restorebox();
			}
			break;
		case 80:
			if (sharecounter==1 && rx<250){
			if (ctr==0){
			setfillstyle(SOLID_FILL,15);
			bar(145,135,300,165);
			setcolor(0);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(150,150,"Human");}
			if (ctr==1){
			setfillstyle(SOLID_FILL,8);
			bar(145,135,300,165);
			setcolor(15);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(150,150,"Human");}
			ctr++;
			if (ctr>1){
			alertformoney();
			getch();
			cleardevice();
			drawmenuscreen();
			ctr=0;}
			}
			if (once<2 && sharecounter==0){
			if (ctr==0){
			setfillstyle(SOLID_FILL,15);
			bar(145,135,300,165);
			setcolor(0);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(150,150,"Human");}
			if (ctr==1){
			setfillstyle(SOLID_FILL,8);
			bar(145,135,300,165);
			setcolor(15);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(150,150,"Human");
			setfillstyle(SOLID_FILL,15);
			bar(145,185,300,215);
			setcolor(0);
			outtextxy(150,200,"Computer");}
			if (ctr==2){
			setfillstyle(SOLID_FILL,8);
			bar(145,185,300,215);
			setcolor(15);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(150,200,"Computer");
			}
			ctr++;
			if (ctr>2){
			ctr=0;}
			}
			break;
		case 72:
			if (sharecounter==1 && rx<250){
			if (ctr==1){
			setfillstyle(SOLID_FILL,8);
			bar(145,135,300,165);
			setcolor(15);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(150,150,"Human");}
			ctr--;
			if (ctr<=0){
			ctr=0;}
			}
			if (once<2 && sharecounter==0){
			if (ctr==1){
			setfillstyle(SOLID_FILL,8);
			bar(145,135,300,165);
			setcolor(15);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(150,150,"Human");}
			if (ctr==2){
			setfillstyle(SOLID_FILL,8);
			bar(145,185,300,215);
			setcolor(15);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(150,200,"Computer");
			setfillstyle(SOLID_FILL,15);
			bar(145,135,300,165);
			setcolor(0);
			outtextxy(150,150,"Human");}
			ctr--;
			if (ctr<=0){ctr=0;}
			}
			break;
		case 88:
		/*  caps  x */
			if (rx==250){
			strcpy(&firstletter,"X");
			letter1=1;
			checkxflag=1;
			checkoflag=0;
			curs_off();
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			setcolor(15);
			outtextxy(cx+15,rx+1,&ikey);
			playerno1=1;
			cx=425;      
			setcolor(12);
			outtextxy(cx+15,276,"O");
			strcpy(&secondletter,"O");
			letter2=2;
			playerno2=1;
			rx=5;}
			break;
		case 79:
		/* caps O  */
			if (rx==250){
			strcpy(&firstletter,"O");
			checkxflag=0;
			checkoflag=1;
			letter1=2;
			curs_off();
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			setcolor(15);
			outtextxy(cx+15,rx+1,&ikey);
			playerno1=1;
			cx=425;
			setcolor(12);
			outtextxy(cx+15,276,"X");
			strcpy(&secondletter,"X");
			letter2=1;
			playerno2=1;
			rx=5;}
			break;
		case 13:	
			setcolor(15);
			if (ctr==0){
			ctr=0;
			once--;}
			if (once==0 && ctr>0){
			if (ctr==1){
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(cx,rx,"Human");
			setfillstyle(SOLID_FILL,8);
			bar(145,135,300,165);
			setcolor(15);
			outtextxy(150,150,"Human");
			rx=rx+25;
			playertype1=1;}
			if (ctr==2){
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(cx,rx,"Computer");
			setfillstyle(SOLID_FILL,8);
			bar(145,185,300,215);
			setcolor(15);
			outtextxy(150,200,"Computer");
			playertype1=2;}
			ctr=0;
			}
			if (once>0 && once<2 && ctr>0){
			if (ctr==1){
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(cx,rx,"Human");
			playertype2=1;
			player=0;}
			if (ctr==2){
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(cx,rx,"Computer");
			playertype2=2;
			player=0;}
			}
			if (playertype1==2){
			menuerror=2;
			gameover=2;
			checkflag=1;
			error();
			ctr=0;
			once=-1;
			player=1;
			setfillstyle(SOLID_FILL,8);
			bar(10,25,600,125);
			setcolor(15);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(100,50,"Player 1:");
			outtextxy(100,75,"Player 2:");
			playertype1=0;
			playertype2=0;
			cx=225;
			rx=50;}
			if (playertype1==2 && playertype2==2){
			menuerror=1;
			gameover=2;
			checkflag=1;
			error();
			ctr=0;
			once=-1;
			player=1;
			setfillstyle(SOLID_FILL,0);
			bar(10,10,600,125);
			setcolor(15);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(100,50,"Player 1:");
			outtextxy(100,75,"Player 2:");
			playertype1=0;
			playertype2=0;
			cx=225;
			rx=50;}
			if (player==0){
			cx=425;
			rx=250;
			curs_on();
			player=1;
			once=3;}
			if (rx==5){
			ctr=0;
			rctr=0;
			lastrctr=0;
			entered=1;
			if (playertype1==1){
			cx=250;
			rx=325;}
			if (playertype1==2){
			cx=250;
			rx=350;}
			curs_on();
			start=0;
			name();
			curs_off();
			cleardevice();
			drawboard();
			boxrr=150;
			boxcc=175;
			boxr=125;
			boxc=150;
			boxon();
			start=4;
			menuon=0;
			ik=0;
			rx=0;
			once=4;
			}
			if (once<2){
			once++;}
			break;
	}
}
return 1;}
int curs_on()   
{
setfillstyle(SOLID_FILL,15);
bar(cx+2,rx-5,cx+10,rx+10);
return 1;
}
int curs_off()
{
setfillstyle(SOLID_FILL,8);
bar(cx+2,rx-5,cx+10,rx+10);
return 1;}
int dropdownmenu(){
	settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
	settextjustify(1,1);
	setfillstyle(SOLID_FILL,15);
	bar(menucol,menurow+2,menucoll,menuroww);
	setfillstyle(SOLID_FILL,0);
	bar(menucol+1,menurow+3,menucoll-1,menuroww-1);
	setfillstyle(SOLID_FILL,7);
	bar(menucol+4,menurow+5,menucoll-3,menurow+20);
	bar(menucol+4,menurow+25,menucoll-3,menurow+41);
#if 0
	bar(menucol+4,menurow+37,menucoll-4,menurow+53);
#endif
	setlinestyle(SOLID_LINE,1,2);
	setcolor(15);
	line(menucol+4,menurow+5,menucoll-3,menurow+5);
	line(menucol+4,menurow+5,menucol+4,menurow+20);
	line(menucol+4,menurow+25,menucoll-3,menurow+25);
	line(menucol+4,menurow+25,menucol+4,menurow+41);
	setcolor(0);
	line(menucol+4,menurow+20,menucoll-3,menurow+20);
	line(menucoll-3,menurow+5,menucoll-3,menurow+20);
	line(menucol+4,menurow+41,menucoll-3,menurow+41);
	line(menucoll-3,menurow+25,menucoll-3,menurow+41);
	/* line in between menu items */
	setcolor(15);
	line(menucol,menurow+22,menucoll,menurow+22);
return 1;}
int setstatus(){
	switch(boxr){
	case 125:
		if (boxc==150){
		mee=2;
		error();}
		if (boxc==210){
			if (oxx1!=2){
			mee=2;
			error();}
			if (oxx1==2){
			writetext();}}
		if (boxc==310){
			if (oxx4!=2){
			mee=2;
			error();}
			if (oxx4==2){
			writetext();}
			}
		if (boxc==410){
			if (oxx7!=2){
			mee=2;
			error();}
			if (oxx7==2){
			writetext();}
			}
			break;
	case 210:
		if (boxc==150){
		mee=2;
		error();}
		if (boxc==210){
			if (oxx2!=2){
			mee=2;
			error();}
			if (oxx2==2){
			writetext();}
			}
		if (boxc==310){
			if (oxx5!=2){
			mee=2;
			error();}
			if (oxx5==2){
			writetext();}
			}    
		if (boxc==410){
			if (oxx8!=2){
			mee=2;
			error();}
			if (oxx8==2){
			writetext();}
			}
			break;
		case 295:
		if (boxc==150){
		mee=2;
		error();}
		if (boxc==210){
			if (oxx3!=2){
			mee=2;
			error();}
			if (oxx3==2){
			writetext();}
			}
		if (boxc==310){
			if (oxx6!=2){
			mee=2;
			error();}
			if (oxx6==2){
			writetext();}
			}
		if (boxc==410){
			if (oxx9!=2){
			mee=2;
			error();}
			if (oxx9==2){
			writetext();}
			}
			break;}
		if (player==1 && playertype1==1 && winflag==0){
		writeforcomputer();check_xwin();}
		if (player==2 && playertype2==1 && winflag==0){
		writeforcomputer();check_owin();}
return (winflag);}

 

int check_xwin(){
	scanboxes();
	if (winflag==0){
	if (oxx1==0 && oxx4==0 && oxx7==0){
	display_win();}
	if (oxx1==0 && oxx2==0 && oxx3==0){
	display_win();}
	if (oxx1==0 && oxx5==0 && oxx9==0){
	display_win();}
	if (oxx4==0 && oxx5==0 && oxx6==0){
	display_win();}
	if (oxx7==0 && oxx8==0 && oxx9==0){
	display_win();}
	if (oxx3==0 && oxx5==0 && oxx7==0){
	display_win();}
	if (oxx3==0 && oxx6==0 && oxx9==0){
	display_win();}
	if (oxx2==0 && oxx5==0 && oxx8==0){
	display_win();}
	}
return (winflag);}
int check_owin(){
	scanboxes();
	if (winflag==0){
	if (oxx1==1 && oxx4==1 && oxx7==1){
	display_win();}
	if (oxx1==1 && oxx2==1 && oxx3==1){
	display_win();}
	if (oxx1==1 && oxx5==1 && oxx9==1){
	display_win();}
	if (oxx4==1 && oxx5==1 && oxx6==1){
	display_win();}       
	if (oxx7==1 && oxx8==1 && oxx9==1){
	display_win();}
	if (oxx3==1 && oxx5==1 && oxx7==1){
	display_win();}
	if (oxx3==1 && oxx6==1 && oxx9==1){
	display_win();}
	if (oxx2==1 && oxx5==1 && oxx8==1){
	display_win();}
	}
return (winflag);}
int writetext(){
	boxoff();
	setcolor(lettercolor);
	settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
	settextjustify(0,1);
	outtextxy(boxcc-15,boxrr-15,&key);
	err_flag=0;
return (err_flag);}
int writectext(){
	boxoff();
	setcolor(lettercolor);
	settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
	settextjustify(0,1);
	outtextxy(boxcc-15,boxrr-15,"O");
	err_flag=0;
return (err_flag);}
int writeotext(){
	boxoff();
	setcolor(lettercolor);
	settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
	settextjustify(0,1);
	outtextxy(boxcc-15,boxrr-15,"X");
	err_flag=0;
return (err_flag);}
int error(){
			messageboxc=150;
			messageboxr=173;
			messageboxcc=500;
			messageboxrr=300;
			savebox();
			midx=295;
			errorscreen();
			if (mee==1){
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			setusercharsize(1,3,1,1);
			settextjustify(0,1);
			setcolor(4);
			outtextxy(messageboxc+5,messageboxr+5,"Game");}
			if (mee==2){
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			setusercharsize(1,3,1,1);
			settextjustify(0,1);
			setcolor(4);
			outtextxy(messageboxc+5,messageboxr+5,"Error");}
			if (soundon==1){
			sound(275);
			delay(150);
			sound(375);
			delay(250);
			nosound();}
			if (menuerror==1){
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			setcolor(1);
			outtextxy(messageboxc+15,messageboxr+40,"Computer cannot");
			outtextxy(messageboxc+15,messageboxr+55,"play from both sides !");
			gameover=3;
			menuerror=0;}
			if (menuerror==2){			
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			setcolor(1);
			outtextxy(messageboxc+10,messageboxr+40,"Computer cannot play the first move in");
			outtextxy(messageboxc+10,messageboxr+55,"this version. This feature will be");
			outtextxy(messageboxc+10,messageboxr+70,"provided in the next version of the");
			outtextxy(messageboxc+10,messageboxr+85,"software !");
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			gameover=3;
			menuerror=0;}
			if (gameover==0 && checkflag==1){
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			if (player==1){
			letter=letter1;
			counter=0;
			cx=messageboxc+15;
			while (counter<player1lastcounter){
			setcolor(4);
			outtextxy(cx,messageboxr+50,&playername[counter]);
			cx+=textwidth(&playername[counter]);
			counter++;}
			outtextxy(cx+20,messageboxr+50,"!");
			cx=messageboxc+15;
			outtextxy(cx,messageboxr+85,"Your letter is");
			cx=cx+175;
			if (letter==1){
			outtextxy(cx,messageboxr+85,"X");}
			if (letter==2){
			outtextxy(cx,messageboxr+85,"O");}
			outtextxy(cx+25,messageboxr+85,"!");}
			if (player==2){
			letter=letter2;
			count=player1lastcounter;
			cx=messageboxc+15;
			while (count<player2lastcounter){
			setcolor(4);
			outtextxy(cx,messageboxr+50,&playername[count]);
			cx+=textwidth(&playername[count]);
			count++;}
			outtextxy(cx+20,messageboxr+50,"!");
			cx=messageboxc+15;
			outtextxy(cx,messageboxr+85,"Your letter is");			
			cx=cx+175;
			if (letter==1){
			outtextxy(cx,messageboxr+85,"X");}
			if (letter==2){
			outtextxy(cx,messageboxr+85,"O");}
			outtextxy(cx+25,messageboxr+85,"!");}
			gameover=-1;}
			if (gameover==0 && checkflag==0){
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			setcolor(4);
			outtextxy(messageboxc+100,messageboxr+45,"Invalid entry !");
			outtextxy(messageboxc+100,messageboxr+75,"Box occupied !");
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);}
			if (gameover==1){
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			setcolor(4);
			outtextxy(messageboxc+115,messageboxr+60,"Game over !");
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			entered=9;
			gameover=2;}
			getch();
			restorebox();
			if (gameover<3){
			boxrr=150;
			boxcc=175;
			boxr=125;
			boxc=150;
			boxon();}
			err_flag=1;
			mee=0;
return (err_flag);}
int display_win(){
			messageboxc=150;
			messageboxr=173;
			messageboxcc=500;
			messageboxrr=300;
			savebox();
			midx=295;
			if (soundon==1){
			soundctr=0;
			while (soundctr<10){
			sound(250);
			delay(50);
			nosound();
			sound(350);
			delay(50);
			nosound();
			soundctr++;}}
			errorscreen();
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			setusercharsize(1,3,1,1);
			settextjustify(0,1);
			setcolor(2);
			outtextxy(messageboxc+5,messageboxr+5,"Game");
	if (player==1){	
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			setfillstyle(SOLID_FILL,8);
			bar(135,455,250,470);
			setcolor(8);
			outtextxy(140,465,&score1);
			outtextxy(495,43,&score1);
			sctr++;
			setcolor(2);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(messageboxc+100,messageboxr+50,"Game over !");
			counter=0;
			cx=messageboxc+15;
			setcolor(10);
			settextjustify(0,1);
			if (playertype1==1){
			counter=0;
			while (counter<player1lastcounter){
			outtextxy(cx,messageboxr+90,&playername[counter]);
			cx+=textwidth(&playername[counter]);
			counter++;}
			cx=cx+10;}
			if (playertype1==2){
			outtextxy(525,27,"COMPUTER");
			cx=cx+135;}
			outtextxy(cx,messageboxr+90,"wins !");
			setcolor(15);
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			sprintf(&score1,"%d",sctr);
			setcolor(15);
			outtextxy(140,465,&score1);
			outtextxy(495,43,&score1);}
	if (player==2){
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			setcolor(8);
			outtextxy(535,465,&score2);
			outtextxy(495,43,&score2);
			bctr++;
			setcolor(2);
			settextstyle(TRIPLEX_FONT,HORIZ_DIR,3);
			settextjustify(0,1);
			outtextxy(messageboxc+100,messageboxr+50,"Game over !");
			count=player1lastcounter;
			cx=messageboxc+15;
			setcolor(10);
			settextjustify(0,1);
			if (playertype2==1){
			count=player1lastcounter;
			while (count<player2lastcounter){
			outtextxy(cx,messageboxr+90,&playername[count]);
			cx+=textwidth(&playername[count]);
			count++;}}
			cx=cx+10;
			
			if (playertype2==2){
			outtextxy(cx,messageboxr+90,"COMPUTER");
			cx=cx+135;}
			outtextxy(cx,messageboxr+90,"wins !");
			setcolor(15);
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);
			sprintf(&score2,"%d",bctr);
			setcolor(15);
			outtextxy(535,465,&score2);
			outtextxy(495,43,&score2);}
			
			if (entered<9){
			entered=9;}
			getch();
			restorebox();
			boxrr=150;
			boxcc=175;
			boxr=125;
			boxc=150;
			boxon();
			winflag=1;
return 1;}
int setplayer(){
if (entered==1 || entered==3 || entered==5 || entered==7 || entered==9){
setfillstyle(SOLID_FILL,8);
bar(490,23,635,48);
settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
settextjustify(0,1);
setcolor(15);
if (playertype2==1){
count=player1lastcounter;
cx=495;
while (count<player2lastcounter){
outtextxy(cx,27,&playername[count]);
cx+=textwidth(&playername[count]);
count++;}}
if (playertype2==2){
outtextxy(495,27,"COMPUTER");}
setcolor(15);
settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
settextjustify(0,1);
sprintf(&score2,"%d",bctr);
setcolor(15);
outtextxy(495,43,&score2);
player=2;
if (letter2==1){
checkxflag=1;
lettercolor=15;
checkoflag=0;}
if (letter2==2){
lettercolor=12;
checkxflag=0;
checkoflag=1;}
}
if (entered==2 || entered==4 || entered==6 || entered==8 || entered==10){
setfillstyle(SOLID_FILL,8);
bar(490,23,635,48);
settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
settextjustify(0,1);
if (playertype1==1){
setcolor(15);
counter=0;
cx=495;
while (counter<player1lastcounter){
outtextxy(cx,27,&playername[counter]);
cx+=textwidth(&playername[counter]);
counter++;}}
if (playertype1==2){
outtextxy(495,27,"Computer");}
if (letter1==1){
checkxflag=1;
lettercolor=15;
checkoflag=0;}
if (letter1==2){
checkxflag=0;
lettercolor=12;
checkoflag=1;}
setcolor(15);
settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
settextjustify(0,1);
sprintf(&score1,"%d",sctr);
setcolor(15);
outtextxy(495,43,&score1);
player=1;}
entered++;
return 1;}
int boxone(){
	boxc=210;
	boxcc=235;
	boxr=125;
	boxrr=150;
return 1;}
int boxtwo(){
	boxc=210;
	boxcc=235;
	boxr=210;
	boxrr=235;
return 1;}
int boxthree(){
	boxc=210;
	boxcc=235;
	boxr=295;
	boxrr=320;
return 1;}
int boxfour(){
	boxc=310;
	boxcc=335;
	boxr=125;
	boxrr=150;
return 1;}
int boxfive(){
	boxc=310;
	boxcc=335;
	boxr=210;
	boxrr=235;
return 1;}
int boxsix(){
	boxc=310;
	boxcc=335;
	boxr=295;
	boxrr=320;
return 1;}
int boxseven(){
	boxc=410;
	boxcc=435;
	boxr=125;
	boxrr=150;
return 1;}
int boxeight(){
	boxc=410;
	boxcc=435;
	boxr=210;
	boxrr=235;
return 1;}
int boxnine(){
	boxc=410;
	boxcc=435;
	boxr=295;
	boxrr=320;
return 1;}
int quit(){
	messageboxc=150;
	messageboxr=173;
	messageboxcc=500;
	messageboxrr=300;
	midx=300;
	if (soundon==1){
		sound(275);
		delay(150);
		sound(225);
		delay(250);
		sound(375);
		delay(250);
		nosound();}
		errorscreen();
		settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
		setusercharsize(1,3,1,1);
		settextjustify(0,1);	
		setcolor(12);
		outtextxy(messageboxc+5,messageboxr+5,"Exit");
			setcolor(12);
			settextstyle(DEFAULT_FONT,HORIZ_DIR,1);
			settextjustify(0,1);	
			outtextxy(messageboxc+5,messageboxr+35,"GREYcells Tic-tac-toe");
			setcolor(10);
			outtextxy(messageboxc+5,messageboxr+55,"A game developed by J.V.Ravichandran.");
			setcolor(7);
			outtextxy(messageboxc+5,messageboxr+75,"(c) Semantix Computers, New Delhi");
			setcolor(0);
			outtextxy(messageboxc+5,messageboxr+90,"B-10, Triveni apartments, Vikas puri,"); 
			outtextxy(messageboxc+5,messageboxr+105,"New Delhi-110 018.");
			getch();
return 1;}

 

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