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BRICK GAME IN C++
<![CDATA[<br />
#include <iostream.h><br />
#include <conio.h><br />
#include <ctype.h> //defining toupper<br />
# include <process.h> //exit(0)<br />
# include <dos.h><br />
# include <stdlib.h><br />
# include <graphics.h><br />
# include <stdio.h><br />
<br />
# define NULL 0<br />
# define YES 1<br />
# define NO 0<br />
#define ESC 0x1b /* Define the escape key */<br />
<br />
int MaxX, MaxY, MidX, MidY ;<br />
int bri[5][20] ;<br />
<br />
int GraphDriver; /* The Graphics device driver */<br />
int GraphMode; /* The Graphics mode value */<br />
int MaxXX, MaxYY; /* The maximum resolution of the screen */<br />
int MaxColors; /* The maximum # of colors available */<br />
int ErrorCode; /* Reports any graphics errors */<br />
struct palettetype palette; /* Used to read palette info*/<br />
<br />
// Initialize the graphics mode<br />
void Initialize(void);<br />
<br />
// Display the last screen of bricks<br />
void SayGoodbye(void);<br />
<br />
// Changes the text style and report any error if encounter<br />
void changetextstyle(int font, int direction, int charsize);<br />
<br />
// Welcome screen of bricks game<br />
mainscreen();<br />
<br />
// Instruction messages of bricks game<br />
screen();<br />
<br />
// To display the bricks (in square box) and paddles in rectangle form <br />
and<br />
bulbs rounded form<br />
bricks();<br />
<br />
// Delete a bricks when bulb hit it<br />
delbrick(int,int);<br />
<br />
// Echoes different musics<br />
bell(int);<br />
<br />
int graphmode = CGAHI, graphdriver = CGA, level; // resolution of<br />
CGAHI = 640 x 200 (col x row)<br />
<br />
/*-------------------Mouse Library--------------*/<br />
<br />
void InitMouse()//initializes the mouse<br />
{<br />
union REGS in,out;<br />
in.x.ax=33;<br />
int86(0x33,&in,&out);<br />
}<br />
<br />
void MousePos(int* x,int* y,int* click)<br />
{ //stores back (x,y) values and click type<br />
//click=1: left click<br />
//2: right click<br />
//3: middle click<br />
union REGS in,out;<br />
in.x.ax=3;<br />
int86(0x33,&in,&out);<br />
*click=(int)out.x.bx;<br />
*x=(int)out.x.cx;<br />
*y=(int)out.x.dx;<br />
}<br />
/*-----------------------End Of Mouse Methods----------*/<br />
<br />
<br />
main<br />
()<br />
{<br />
union REGS ii, oo ;<br />
<br />
int BallX, BallY, Base1, Base2, dx = 1, dy = -1, OldX, OldY ;<br />
int totallayer[5] = { 10, 20, 30, 40, 50 }, max = 50, layer = 4 ;<br />
int i, flag = 0, speed = 15, score = 0, chance = 4, areareq ;<br />
<br />
char *m1, *m2 ; //pointers to memory<br />
<br />
/* Function to initialise the graphics mode */<br />
initgraph ( &graphdriver, &graphmode, "c:\tc\bgi" ) ;<br />
mainscreen();<br />
initgraph ( &graphdriver, &graphmode, "c:\tc\bgi" ) ;<br />
/**************************************************/<br />
/* Function to initialise the mouse */<br />
InitMouse();<br />
/* get the maximum value of x and y coordinates of the screen */<br />
MaxX = getmaxx() ;<br />
MaxY = getmaxy() ;<br />
/* finding the center of the screen */<br />
MidX = MaxX / 2 ;<br />
MidY = MaxY / 2 ;<br />
<br />
<br />
/* create opening screen and accept the level of the player's */<br />
level = screen() ;<br />
<br />
/* assign the speed to ball as per the level chosen */<br />
switch ( level )<br />
{<br />
case 'M' :<br />
case 'm' :<br />
speed = 10 ;<br />
break ;<br />
<br />
case 'F' :<br />
case 'f' :<br />
speed = 3 ;<br />
}<br />
<br />
/* draw the four layer of bricks, the paddle and the ball */<br />
rectangle ( 0, 0, MaxX, MaxY - 12 ) ;<br />
bricks() ;<br />
rectangle ( MidX - 25, MaxY - 7 - 12, MidX + 25, MaxY - 12 ) ;<br />
floodfill ( MidX, MaxY - 1 - 12, 12 ) ;<br />
circle ( MidX, MaxY - 13 - 12, 12 ) ;<br />
<br />
// fillellipse ( MidX, MaxY - 13 - 12,12,12 ) ;<br />
floodfill ( MidX, MaxY - 10 - 12, 12 ) ;<br />
<br />
/* memory allocation for storing the image of the paddle */<br />
areareq = imagesize ( MidX - 12, MaxY - 18, MidX + 12, MaxY - 8 ) ;<br />
m1 =((char*) malloc ( areareq )) ;<br />
<br />
/* memory allocation for storing the image of the ball */<br />
areareq = imagesize ( MidX - 25, MaxY - 7, MidX + 25, MaxY - 1 ) ;<br />
m2 =((char *) malloc ( areareq ) );<br />
<br />
/* if unable to alloacte the memory */<br />
if ( m1 == NULL || m2 == NULL )<br />
{<br />
puts ( "Not Enough memory!!" ) ;<br />
exit ( 1 ) ;<br />
}<br />
<br />
/* image of the paddle and the ball is stored into allocated memory */<br />
getimage ( MidX - 12, MaxY - 7 - 12 - 12 + 1, MidX + 12, MaxY - 8 - <br />
12,<br />
m1 ) ;<br />
getimage ( MidX - 25, MaxY - 7 - 12, MidX + 25, MaxY - 1 - 12, m2 ) ;<br />
<br />
/* store current position of the paddle and ball */<br />
Base1 = MidX - 25 ;<br />
Base2 = MaxY - 7 - 12 ;<br />
BallX = MidX - 12 ;<br />
BallY = MaxY - 7 - 12 + 1 - 12 ;<br />
<br />
/* display balls remaining ( initially 3 ) */<br />
gotoxy ( 45, 25 ) ;<br />
cout<< "Balls :" ;
for ( i = 0 ; i < 3 ; i++ )
{
circle ( 515 + i * 35, MaxY - 5, 12 ) ;
floodfill ( 515 + i * 35, MaxY - 5, 12 ) ;
}
/* display starting score */
gotoxy ( 1, 25 ) ;
cout<< "Score: ";
gotoxy(16,25);
cout<<score;
/* select font and alignment for displaying text */
settextjustify ( CENTER_TEXT, CENTER_TEXT ) ;
changetextstyle ( GOTHIC_FONT, HORIZ_DIR, 4 ) ;
while ( 1 )
{
flag = 0 ;
/* saving current x and y coordinates of the ball */
OldX = BallX ;
OldY = BallY ;
/* update ballx and bally to move the ball in correct direction */
BallX = BallX + dx ;
BallY = BallY + dy ;
/* according to the position of ball the layer of bricks is
determined
*/
if ( BallY > 40 )<br />
{<br />
max = 50 ;<br />
layer = 4 ;<br />
}<br />
else<br />
{<br />
if ( BallY > 30 )<br />
{<br />
max = 40 ;<br />
layer = 3 ;<br />
}<br />
else<br />
{<br />
if ( BallY > 20 )<br />
{<br />
max = 30 ;<br />
layer = 2 ;<br />
}<br />
else<br />
{<br />
if ( BallY > 10 )<br />
{<br />
max = 20 ;<br />
layer = 1 ;<br />
}<br />
else<br />
{<br />
max = 10 ;<br />
layer = 0 ;<br />
}<br />
}<br />
}<br />
}<br />
<br />
/* if the ball hits the right boundary, move it to the left */<br />
if ( BallX > ( MaxX - 24 - 1 ) )<br />
{<br />
bell ( 5 ) ;<br />
BallX = MaxX - 24 - 1 ;<br />
dx = -dx ;<br />
}<br />
<br />
/* if the ball hits the left boundary, move it to the right */<br />
if ( BallX < 1 )
{
bell ( 5 ) ;
BallX = 1 ;
dx = -dx ;
}
/* if the ball hits the top boundary, move it down */
if ( BallY < 1 )
{
bell ( 5 ) ;
BallY = 1 ;
dy = -dy ;
}
/* if the ball is in the area of the bricks */
if ( BallY < max )
{
/* if there is no brick at the top of the ball */
if ( bri[layer][ ( BallX + 10 ) / 32 ] == 1 )
{
/* if the ball touches a brick */
for ( i = 1 ; i <= 6 ; i++ )
{
/* check whether there is a brick to the right of the ball */
if ( bri[layer][ ( BallX + i + 10 ) / 32 ] == 0 )
{
/* if there is a brick */
BallX = BallX + i ;
flag = 1 ;
break ;
}
/* check whether there is a brick to the left of the ball */
if ( bri[layer][ ( BallX - i + 10 ) / 32 ] == 0 )
{
BallX = BallX - i ;
flag = 1 ;
break ;
}
}
/* if the ball does not touch a brick at the top, left or right */
if ( !flag )
{
/* check if the ball has moved above the current layer */
if ( BallY < totallayer[layer - 1] )
{
/* if so, change current layer appropriately */
layer-- ;
max = totallayer[layer] ;
}
/* restore the image of the ball at the old coordinates */
putimage ( OldX, OldY, m1, OR_PUT ) ;
/* erase the image at the old coordinates */
putimage ( OldX, OldY, m1, XOR_PUT ) ;
/* place the image of the ball at the new coordinates */
putimage ( BallX, BallY, m1, XOR_PUT ) ;
/* delay for fewseconds*/
delay ( speed ) ;
/* carry on moving the ball */
continue ;
}
}
/* when ball touch the brick control comes to this point */
bell ( 5 ) ; /* play music */
/* erase the touched brick */
delbrick ( ( BallX + 10 ) / 32, layer ) ;
/* if the brick hit is on the extreme right */
if ( ( BallX + 10 ) / 32 == 19 )
line ( MaxX, 0, MaxX, 50 ) ; /* redraw right boundary */
/* if the brick hit is on the extreme left */
if ( ( BallX + 10 ) / 32 == 0 )
line ( 0, 0, 0, 50 ) ; /* redraw left boundary */
/* if the brick hit is in the topmost layer */
if ( layer == 0 )
line ( 0, 0, MaxX, 0 ) ; /* redraw top boundary */
/* set appropriate array element to 1 to indicate absence of brick
*/
bri[layer][ ( BallX + 10 ) / 32 ] = 1 ;
BallY = BallY + 1 ; /* update the y coordinate */
dy = -dy ; /* change the current direction of the ball */
score += 10 ; /* increment the score by 10 */
gotoxy ( 16, 25 ) ;
cout<< score; /* display latest score */
/* if the first brick is hit during a throw*/
}
/* if ball reached the bottom */
if ( BallY > 180 - 12 )<br />
{<br />
<br />
<br />
/* if paddle missed the ball */<br />
if ( BallX < Base1 - 20 || BallX > Base1 + 50 )<br />
{<br />
/* continue the decrement of the ball */<br />
while ( BallY < 177 )
{
/* erase the image of the ball at the old coordinates */
putimage ( OldX, OldY, m1, XOR_PUT ) ;
/* put the image of the ball at the new coordinates */
putimage ( BallX, BallY, m1, XOR_PUT ) ;
/* introduce delay for fewseconds */
delay ( speed ) ;
/* saveing current x and y coordinates of the ball */
OldX = BallX ;
OldY = BallY ;
/* update ballx and bally to move the ball in correct direction */
BallX = BallX + dx ;
BallY = BallY + dy ;
}
chance-- ; /* decrement the total number of chances */
score -= 10 ; /* decrement 10 points for each ball lost */
gotoxy ( 16, 25 ) ;
cout<< score; /* display latest score */
bell ( 1 ) ;
/* erase one of the available balls */
if ( chance )
putimage ( 515 + ( chance - 1 ) * 35 - 12 , MaxY - 10, m1, XOR_PUT
)
;
/* if the last ball is being played */
if ( chance == 1 )
{
gotoxy ( 45, 25 ) ;
cout<< "Last ball... careful!";
}
/* if all the balls are lost */
if ( !chance )
{
gotoxy ( 45, 25 ) ;
cout<<"Press any key to continue ... " ;
outtextxy ( MidX, MidY, "Better luck next time" ) ;
bell ( 2 ) ;
closegraph() ;
restorecrtmode() ;
closegraph(); /* Close the graphics mode */
Initialize(); /* Intialize the graphics mode */
setbkcolor(4);
SayGoodbye(); /* Display the That's all Folks message */
closegraph(); /* Return the system to text mode */
exit ( 0 ) ;
}
}
/* if ball is collected on paddle */
bell ( 4 ) ;
BallY = 180 - 12 ; /* restore the y coordinate of ball */
dy = -dy ; /* move the ball upwards */
}
/* put the image of the ball at the old coordinates */
putimage ( OldX, OldY, m1, OR_PUT ) ;
/* erase the image of the ball at the old coordinates */
putimage ( OldX, OldY, m1, XOR_PUT ) ;
/* put the image of the ball at the upadted coordinates */
putimage ( BallX, BallY, m1, XOR_PUT ) ;
/* If score becomes 500 for every level player the speed of the ball
will
be standard PLAYER playing Fast level feel reduction of speed n
PLAYER
playing slow or medium level feel increment in speed... */
if(score==600)
speed=6 ;
/* if all the bricks have been knockout */
if ( score == 800 - ( ( 4 - chance ) * 10 ) )
{
outtextxy ( MidX, MidY, "Winner !!" ) ;
if ( score < 800 )
outtextxy ( MidX, MidY + 30, "Try to score 800" ) ;
else
outtextxy ( MidX, MidY + 30, " GREAT!" ) ;
bell ( 2 ) ;
SayGoodbye(); /* Display the That's all Folks message */
closegraph() ;
restorecrtmode() ;
exit ( 0 ) ;
}
/* introduce delay for few seconds */
delay ( speed ) ;
/* if the key is pressed to exit the game */
if ( kbhit() )
{
/* interrupt issue to obtain the ascii and scan codes of key hit */
ii.h.ah = 0 ;
int86 ( 22, &ii, &oo ) ;
/* if Esc key has been pressed */
if ( oo.h.ah == 1 )
exit ( 0 ) ;
}
/* put the image of the paddle at the old coordinates */
putimage ( Base1, Base2, m2, OR_PUT ) ;
/* erase the image of the paddle at the old coordinates */
putimage ( Base1, Base2, m2, XOR_PUT ) ;
// /* if Esc key has been pressed */
// if ( oo.h.ah == 1 )
// exit ( 0 ) ;
/* right arrow key */
// if ( oo.h.ah == 75 )
// Base1 = //Base1 - 25 ;
/* left arrow key */
// if ( oo.h.ah == 77 )
// Base1= Base1 + 25 ;
/**********************************************************/
//dummy variables are useless
//to get current x co-ordinate of the
//mouse pointer pointer of Base1 is passed
//the result is copied in the variable
int ydummy,clickdummy;
MousePos(&Base1,&ydummy,&clickdummy);
/* if paddle goes beyond left boundary */
if ( Base1 < 0 )
Base1 = 0 ;
/* if paddle goes beyond right boundary */
if ( Base1 > 589 )<br />
Base1 = 589 ;<br />
/* put the image of the paddle at the proper position */<br />
putimage ( Base1, Base2, m2, XOR_PUT ) ;<br />
// }<br />
}<br />
closegraph();<br />
Initialize();<br />
SayGoodbye(); /* Give user the closing screen */<br />
closegraph(); /* Return the system to text mode */<br />
return(0);<br />
}<br />
<br />
/* This function creates the opening screen and displyed instruction<br />
related to the game<br />
along with two option play or exit.After selecting the paly option it<br />
display<br />
three levels of the game and according to your choice you can select <br />
any<br />
level.<br />
This selected level is returned by this function to the mainprogram<br />
according to which<br />
the speed is assigned to the ball*/<br />
<br />
screen()<br />
{<br />
int i, j, lx = 0, ly = 0, ch ;<br />
<br />
<br />
rectangle(1,1,600,195);<br />
setbkcolor(4);<br />
/* set the textstyle for displaying instruction */<br />
changetextstyle ( DEFAULT_FONT, HORIZ_DIR, 0 ) ;<br />
outtextxy ( 150, 55, " Instructions " ) ;<br />
changetextstyle (4, HORIZ_DIR, 5 );<br />
outtextxy ( 130, 0, " B R I C K S" ) ;<br />
changetextstyle ( DEFAULT_FONT, HORIZ_DIR, 0 ) ;<br />
outtextxy ( 30, 68, "Use mouse to move the paddle" ) ; // can also <br />
use<br />
KEYBOARD after activating keyboard event (use LEFT and RIGHT keys to <br />
move<br />
the PADDLE<br />
outtextxy ( 30, 88, "If you don't collect the ball on the paddle, you<br />
lose the ball." ) ;<br />
outtextxy ( 30, 108, "On loosing a ball you loose 10 points." ) ;<br />
outtextxy ( 30, 128, "On taking a brick you gain 10 points." ) ;<br />
changetextstyle(7, HORIZ_DIR, 3);<br />
outtextxy ( 100, 148, "Press any key to continue ..." ) ;<br />
bell ( 3 ) ; /* ring music */<br />
fflush ( stdin ) ;<br />
// if ( getch() == 0 )<br />
// getch() ;<br />
<br />
closegraph();<br />
initgraph ( &graphdriver, &graphmode, "c:\tc\bgi" ) ;<br />
rectangle(2,2,620,195);<br />
setbkcolor(4);<br />
/* display the main menu */<br />
while ( 1 )<br />
{<br />
<br />
changetextstyle(4,HORIZ_DIR,5);<br />
outtextxy ( 60, 8, "Options Available:" ) ;<br />
outtextxy ( 150, 55, "Play ( P )" ) ;<br />
outtextxy ( 150, 125, "Exit ( E )" ) ;<br />
<br />
ch = 0 ;<br />
<br />
/* continue untill you select the correct choice */<br />
while ( ! ( ch == 'E' || ch == 'P' ) )<br />
{<br />
fflush ( stdin ) ;<br />
<br />
/* if a special key is hit, flush the keyboard buffer */<br />
if ( ( ch = getch() ) == 0 )<br />
getch() ;<br />
else<br />
ch = toupper ( ch ) ; /* store the uppercase of the choice <br />
made*/<br />
}<br />
<br />
if ( ch == 'P' )<br />
break ;<br />
if (ch == 'E')<br />
exit ( 0 ) ;<br />
<br />
}<br />
<br />
// setviewport ( 1, 125 - 12, MaxX - 1, MaxY - 1, 1 ) ;<br />
// clearviewport() ;<br />
closegraph();<br />
initgraph ( &graphdriver, &graphmode, "c:\tc\bgi" ) ;<br />
rectangle(2,2,620,195);<br />
setbkcolor(4);<br />
<br />
/* display menu for the diffrent levels */<br />
changetextstyle(7,HORIZ_DIR,3);<br />
outtextxy ( 60, 8, "Select the level for play:" ) ;<br />
outtextxy ( 150,50, "Slow ( S )" ) ;<br />
outtextxy ( 150, 100, "Medium ( M )" ) ;<br />
outtextxy ( 150, 150, "Fast ( F )" ) ;<br />
<br />
/* accept user's choice */<br />
fflush ( stdin ) ;<br />
if ( ( ch = getch() ) == 0 )<br />
getch() ;<br />
<br />
clearviewport() ;<br />
<br />
/* return the choice selected by the user */<br />
return ( ch ) ;<br />
}<br />
<br />
/* This function draws bricks at the start of the game.There are four<br />
layers of<br />
the bricks */<br />
bricks()<br />
{<br />
int i, j, lx = 0, ly = 0 ;<br />
<br />
for ( i = 0 ; i < 5 ; i++ ) /* 5 rows */
{
for ( j = 0 ; j < 30 ; j++ ) /* 20 columns */
{
/* draw a brick at appropriate coordinates */
rectangle ( lx, ly, lx + 20, ly + 7 ) ;
floodfill ( lx + 1, ly + 1, 2 ) ;
lx = lx + 32 ;
}
lx = 0 ;
ly = ly + 10 ;
}
}
/* This function erases the brick which is knock by the ball */
delbrick ( int b, int l )
{
/* b - brick number, l - layer */
setcolor ( BLACK ) ;
rectangle ( b * 32, l * 10, ( b * 32 ) + 20 , ( l * 10 ) + 7 ) ;
rectangle ( b * 32 + 1, l * 10, ( b * 32 ) + 20 - 1, ( l * 10 ) + 7 -
1 )
;
rectangle ( b * 32 + 2, l * 10, ( b * 32 ) + 20 - 2, ( l * 10 ) + 7 -
2 )
;
rectangle ( b * 32 + 3, l * 10, ( b * 32 ) + 20 - 3, ( l * 10 ) + 7 -
3 )
;
rectangle ( b * 32 + 4, l * 10, ( b * 32 ) + 20 - 4, ( l * 10 ) + 7 -
4 )
;
rectangle ( b * 32 + 5, l * 10, ( b * 32 ) + 20 - 5, ( l * 10 ) + 7 -
5 )
;
rectangle ( b * 32 + 6, l * 10, ( b * 32 ) + 20 - 6, ( l * 10 ) + 7 -
6 )
;
setcolor ( CGA_YELLOW ) ;
}
/* plays different types of music */
bell ( int m_no )
{
/* natural frequencies of 7 notes */
float wave[6] = { 120.81, 136.83, 144.81, 154.61, 216, 240 } ;
int n, i ;
switch ( m_no )
{
case 1 :
for ( i = 0 ; i < 6 ; i++ )
{
sound ( wave[i] * 1 ) ;
delay ( 30 ) ;
}
nosound() ;
break ;
case 2 :
for ( i = 0 ; i < 15 ; i++ )
{
n = random ( 6 ) ;
sound ( wave[n] * 2 ) ;
delay ( 100 ) ;
}
nosound() ;
break ;
case 3 :
// while ( !kbhit() )
{
n = random ( 6 ) ;
sound ( wave[n] * 2 ) ;
delay ( 100 ) ;
}
nosound() ;
/* flush the keyboard buffer */
if ( getch() == 0 )
getch() ;
break ;
case 4 :
for ( i = 5 ; i >= 0 ; i-- )<br />
{<br />
sound ( wave[i] * 4 ) ;<br />
delay ( 15 ) ;<br />
}<br />
nosound() ;<br />
break ;<br />
<br />
case 5 :<br />
sound ( wave[2] * 5 ) ;<br />
delay ( 50 ) ;<br />
nosound() ;<br />
}<br />
}<br />
/* */<br />
/* INITIALIZE: Initializes the graphics system and reports */<br />
/* any errors which occured. */<br />
/* */<br />
<br />
void Initialize(void)<br />
{<br />
int xasp, yasp; /* Used to read the aspect ratio*/<br />
<br />
GraphDriver = DETECT; /* Request auto-detection */<br />
initgraph( &GraphDriver, &GraphMode, "c:\tc\bgi" );<br />
ErrorCode = graphresult(); /* Read result of initialization*/<br />
if( ErrorCode != grOk ){ /* Error occured during init */<br />
printf(" Graphics System Error: %s<br />
", grapherrormsg( ErrorCode ) );<br />
exit( 1 );<br />
}<br />
<br />
getpalette( &palette ); /* Read the palette from board */<br />
MaxColors = getmaxcolor() + 1; /* Read maximum number of colors*/<br />
<br />
MaxXX = getmaxx();<br />
MaxYY = getmaxy(); /* Read size of screen */<br />
<br />
<br />
}<br />
/* */<br />
/* SAYGOODBYE: Give a closing screen to the user before leaving. */<br />
/* */<br />
<br />
void SayGoodbye(void)<br />
{<br />
struct viewporttype viewinfo; /* Structure to read viewport */<br />
int h, w;<br />
<br />
// MainWindow( "== Finale ==" );<br />
<br />
getviewsettings( &viewinfo ); /* Read viewport settings */<br />
changetextstyle( TRIPLEX_FONT, HORIZ_DIR, 4 );<br />
settextjustify( CENTER_TEXT, CENTER_TEXT );<br />
<br />
h = viewinfo.bottom - viewinfo.top;<br />
w = viewinfo.right - viewinfo.left;<br />
cleardevice();<br />
<br />
// StatusLine( "Press any key to EXIT" );<br />
<br />
getch();<br />
<br />
cleardevice(); /* Clear the graphics screen */<br />
<br />
}<br />
<br />
<br />
<br />
//}<br />
<br />
/* */<br />
/* CHANGETEXTSTYLE: similar to settextstyle, but checks for */<br />
/* errors that might occur while loading the font file. */<br />
/* */<br />
<br />
void changetextstyle(int font, int direction, int charsize)<br />
{<br />
int ErrorCode;<br />
<br />
graphresult(); /* clear error code */<br />
settextstyle(font, direction, charsize);<br />
ErrorCode = graphresult(); /* check result */<br />
if( ErrorCode != grOk ){ /* if error occured */<br />
closegraph();<br />
printf(" Graphics System Error: %s<br />
", grapherrormsg( ErrorCode ) );<br />
exit( 1 );<br />
}<br />
}<br />
<br />
/* The main function body of main screen which displays the main screen<br />
creating the opening screen display */<br />
mainscreen()<br />
{<br />
int maxx, maxy, in, area;<br />
<br />
// get maximum x, y coordinates of the screen<br />
maxx = getmaxx();<br />
maxy = getmaxy();<br />
<br />
// setbkcolor sets the current background color using the palette<br />
setbkcolor(RED);<br />
<br />
// Draws a rectangle (graphics mode)<br />
rectangle(0, 0, maxx, maxy);<br />
<br />
// sets the line style and text justification in screen<br />
changetextstyle(10, HORIZ_DIR, 4);<br />
<br />
// displaying the output text on main screen<br />
outtextxy(140, 0, " WELCOME");<br />
outtextxy(170,50," TO ");<br />
outtextxy(140,100," BRICKS");<br />
changetextstyle(7, HORIZ_DIR, 3);<br />
bell(3);<br />
outtextxy(110, 160, "Press any key to continue...");<br />
<br />
// Flushes the standard input device<br />
fflush(stdin);<br />
getch();<br />
closegraph();<br />
<br />
}<br />
<br />
]]>
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