Text Based Pong Game Ready :-)

[Akilla]

Hey Guys,
I finally wrote the Text Based Pong game :-)

Thanks to red baron for his help on hiding the cursor, changing the boundary values and the my_delay function.

Here's the code:

#include <stdio.h>
#include <conio.h>
#include <windows.h>
#include <time.h>

struct gamecomponent
{
    int bufx, bufy;
    int oldx, oldy;
    int newx, newy;
    int xspeed, yspeed;
    void resetcoords();
} ball, paddle;

void gamecomponent :: resetcoords()
{
    oldx = bufx;
    oldy = bufy;
    bufx = newx;
    bufy = newy;
}

void changecoordball()
{
    if (ball.newy == paddle.newy && ball.newx >= paddle.newx && ball.newx <= (paddle.newx + 7))
    {
        if (ball.newx >= paddle.newx && ball.newx <= (paddle.newx + 3))
        {
            if (ball.xspeed > 0)
            {
                ball.xspeed = -ball.xspeed;
            }
            
            if (ball.yspeed > 0)
            {
                ball.yspeed = -ball.yspeed;
            }
        }

        if (ball.newx > (paddle.newx + 3) && ball.newx <= (paddle.newx + 7))
        {
            if (ball.xspeed < 0)
            {
                ball.xspeed = -ball.xspeed;
            }
            
            if (ball.yspeed > 0)
            {
                ball.yspeed = -ball.yspeed;
            }
        }
    }

    if (ball.newx >= 79)
    {
        if (ball.xspeed > 0)
        {
            ball.xspeed = -ball.xspeed;
        }
    }

    if (ball.newx <= 1)
    {
        if (ball.xspeed < 0)
        {
            ball.xspeed = -ball.xspeed;
        }
    }

    if (ball.newy <= 1)
    {
        if (ball.yspeed < 0)
        {
            ball.yspeed = -ball.yspeed;
        }
    }

    ball.newx = ball.newx + ball.xspeed;
    ball.newy = ball.newy + ball.yspeed;
    
}

void changecoordpaddle(int direction)
{
    int delx;

    if (direction == 1)
    {
        delx = paddle.xspeed;
    }
    else
    {
        delx = -paddle.xspeed;
    }

    if (paddle.newx + delx >= 1 && paddle.newx + delx + 7 <= 80)
    {
        paddle.newx = paddle.newx + delx;
    }
}

void initialize()
{
    ball.bufx = 1;
    ball.bufy = 1;
    ball.newx = 1;
    ball.newy = 1;
    ball.oldx = 1;
    ball.oldy = 1;
    ball.xspeed = 1;
    ball.yspeed = 1;

    paddle.bufx = 25;
    paddle.bufy = 25;
    paddle.newx = 25;
    paddle.newy = 25;
    paddle.oldx = 25;
    paddle.oldy = 25;
    paddle.xspeed = 2;
    paddle.yspeed = 1;
}

void placeball()
{
    gotoxy(ball.oldx, ball.oldy);
    printf(" ");
    gotoxy(ball.newx, ball.newy);
    printf("*");
}

void placepaddle()
{
    gotoxy(paddle.oldx, paddle.oldy);
    printf("       ");
    gotoxy(paddle.newx, paddle.newy);
    printf("=======");
}

int checkbounce()
{
    int bounceval = 1;

    if (ball.newy == paddle.newy)
    {
        if (ball.newx < paddle.newx || ball.newx > (paddle.newx + 7))
        {
            bounceval = 0;
        }
        
    }

    return bounceval;
}

void cursor (int yn)
{
  CONSOLE_CURSOR_INFO c;
  c.dwSize   = 1;
  c.bVisible = yn;
  SetConsoleCursorInfo ( GetStdHandle ( STD_OUTPUT_HANDLE ), &c );  
}

void my_delay (int milliseconds)
{
    time_t end, now = clock();
    for ( end = now + milliseconds; now < end; now = clock() )
    continue;
}

int grabinput()
{
    char c;
    c = getch();
    
    if ((float) c == 27)
    {
        return 2;
    }
    else if ((float) c == 75)
    {
        return 0;
    }
    else if ((float) c == 77)
    {
        return 1;
    }
    
    fflush(stdin);
    return -1;
    
}

main()
{
    int pressedkey;
    int bouncer;
    clrscr();
    initialize();
    cursor(0);
    
    while (checkbounce() == 1)
    {
        changecoordball();
        ball.resetcoords();
        placeball();
        placepaddle();
        my_delay(100);
        
        while (kbhit())
        {
            pressedkey = grabinput();
        
            if (pressedkey != -1 && pressedkey != 2)
            {
                changecoordpaddle(pressedkey);
                paddle.resetcoords();
                placepaddle();
            }
            else if (pressedkey == 2)    
            {
                cursor(1);
                return 0;
            }
        }
    }
    
    gotoxy(38, 13);
    printf("CRASH!");
    my_delay(1000);
    gotoxy(1, 24);
    printf("\nProgrammed by Mahurshi Akilla\nwww.akilla.tk\n");

} 

Play it and tell me how it is.
This is my first game in C.
Any suggestions/comments are welcome!!!!

MY HOMEPAGE @ www.akilla.tk

[Akilla]

no comments ?

[CrustyDiaperNos]

I can't compile that, none of the include files i have contain the gotoxy() function or clrscr() function. Oh well, it looked interesting, if that helps...

Brendan

[Akilla]

Should compile well with Borland C++ 5.5

[Akilla]

If you're having compiling problems, download
the executable (30 KB)
http://akillanet.tripod.com/software/textpong.zip

here's the latest source code again.
(This compiles well with Borland C++ 5.5)

#include <stdio.h>
#include <conio.h>
#include <windows.h>
#include <time.h>

#define paddlelength 7

struct gameinfo
{
    int score;
} gameboard;

struct gamecomponent
{
    int bufx, bufy;
    int oldx, oldy;
    int newx, newy;
    int xspeed, yspeed;
    void resetcoords();
} ball, paddle;

void gamecomponent :: resetcoords()
{
    oldx = bufx;
    oldy = bufy;
    bufx = newx;
    bufy = newy;
}

void changecoordball()
{
    if (ball.newy == paddle.newy && ball.newx >= paddle.newx && ball.newx <= (paddle.newx + paddlelength))
    {
        if (ball.newx >= paddle.newx && ball.newx <= (paddle.newx + 3))
        {
            if (ball.xspeed > 0)
            {
                ball.xspeed = -ball.xspeed;
            }
            
            if (ball.yspeed > 0)
            {
                ball.yspeed = -ball.yspeed;
            }
        }

        if (ball.newx > (paddle.newx + 3) && ball.newx <= (paddle.newx + paddlelength))
        {
            if (ball.xspeed < 0)
            {
                ball.xspeed = -ball.xspeed;
            }
            
            if (ball.yspeed > 0)
            {
                ball.yspeed = -ball.yspeed;
            }
        }
    }

    if (ball.newx >= 79)
    {
        if (ball.xspeed > 0)
        {
            ball.xspeed = -ball.xspeed;
        }
    }

    if (ball.newx <= 1)
    {
        if (ball.xspeed < 0)
        {
            ball.xspeed = -ball.xspeed;
        }
    }

    if (ball.newy <= 1)
    {
        if (ball.yspeed < 0)
        {
            ball.yspeed = -ball.yspeed;
        }
    }

    ball.newx = ball.newx + ball.xspeed;
    ball.newy = ball.newy + ball.yspeed;
    
}

void changecoordpaddle(int direction)
{
    int delx;

    if (direction == 1)
    {
        delx = paddle.xspeed;
    }
    else
    {
        delx = -paddle.xspeed;
    }

    if (paddle.newx + delx >= 1 && paddle.newx + delx + paddlelength <= 80)
    {
        paddle.newx = paddle.newx + delx;
    }
}

void initialize()
{
    ball.bufx = 11;
    ball.bufy = 1;
    ball.newx = 11;
    ball.newy = 1;
    ball.oldx = 11;
    ball.oldy = 1;
    ball.xspeed = 1;
    ball.yspeed = 1;

    paddle.bufx = 35;
    paddle.bufy = 25;
    paddle.newx = 35;
    paddle.newy = 25;
    paddle.oldx = 35;
    paddle.oldy = 25;
    paddle.xspeed = 2;
    paddle.yspeed = 1;

    gameboard.score = 0;
}

void placeball()
{
    gotoxy(ball.oldx, ball.oldy);
    printf(" ");
    gotoxy(ball.newx, ball.newy);
    printf("o");
}

void placepaddle()
{
    gotoxy(paddle.oldx, paddle.oldy);
    printf("       ");
    gotoxy(paddle.newx, paddle.newy);
    printf("=======");
}

int checkbounce()
{
    int bounceval = 1;

    if (ball.newy == paddle.newy)
    {
        if (ball.newx < paddle.newx || ball.newx > (paddle.newx + paddlelength))
        {
            bounceval = 0;
        }
        else if (ball.newx >= paddle.newx && ball.newx <= paddle.newx + paddlelength)
        {
            gameboard.score++;
        }
    }

    return bounceval;
}

void cursor (int yn)
{
  CONSOLE_CURSOR_INFO c;
  c.dwSize   = 1;
  c.bVisible = yn;
  SetConsoleCursorInfo ( GetStdHandle ( STD_OUTPUT_HANDLE ), &c );  
}

void my_delay (int milliseconds)
{
    time_t end, now = clock();
    for ( end = now + milliseconds; now < end; now = clock() )
    continue;
}

int grabinput()
{
    char c;
    c = getch();
    
    if ((float) c == 27)
    {
        return 2;
    }
    else if ((float) c == 75)
    {
        return 0;
    }
    else if ((float) c == 77)
    {
        return 1;
    }
    
    fflush(stdin);
    return -1;
    
}

void showscore()
{
    gotoxy(1, 1);
    printf("Score: %d", gameboard.score);
}

main()
{
    int pressedkey;
    int bouncer;
    clrscr();
    initialize();
    cursor(0);
    

    while (checkbounce() == 1)
    {
        changecoordball();
        ball.resetcoords();
        placeball();
        placepaddle();
        my_delay(65);
        showscore();
        
        while (kbhit())
        {
            pressedkey = grabinput();
        
            if (pressedkey != -1 && pressedkey != 2)
            {
                changecoordpaddle(pressedkey);
                paddle.resetcoords();
                placepaddle();
            }
            else if (pressedkey == 2)    
            {
                
                return 0;
            }
        }
    }
    
    gotoxy(38, 13);
    printf("CRASH!");
    my_delay(1000);
    gotoxy(1, 24);
    printf("\nProgrammed by Mahurshi Akilla\nhttp://mahurshi.tripod.com\n");
    cursor(1);

} 

Please tell me if there're any bugs/comments/etc

www.akilla.tk

[iNFERNaL]

wooohooo very nice!!
thumbs up to you , it works fine but it wont compile on MVS

and ur webhoster wont allow external download , id suggest attaching the file to the board

edit note: btw if its a C program why is it under the C++ forum

[Learner007]

I am attaching it to this.

Can anyone tell me why it doesn't compile with other compilers?
How do I make it work with all of the compilers?

[face_master]

>> Can anyone tell me why it doesn't compile with other compilers?

You use some compiler-specific functions and stuff in there...

[moonwalker]

how do i know what functions I have to change (and to what they have to be changed) in order to make it totally ANSI C ?