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***drdebcol*** · (This post was last modified: 02-26-2010 09:54 PM by drdebcol.)

This is interesting program, it actually makes some kind of movement in C++.
It is not perfect, but it can be considered as an introduction into core game programming in C++ (i mean manipulation with characters). It is not the same output as in Matrix movie, that kind i made here in Delphi :
http://www.pro9ramming.com/new-matrix-sc...t-955.html
It is output of random characters on random places.
You can see it in the picture :
[Image: 42610_matrixrandomchars.jpg]

I used 2-dimensional array or matrix "of unsigned short int".
Time is set to 1/4 of a second or 250 mili-seconds. For that delay time i used sleep() function which i made, you have it here :
http://www.pro9ramming.com/sleep-functio...t-965.html
It generates random chars, or better said it generates numbers (0..255) and outputs them as chars. For generating them i used random() function, you have it here :
http://www.pro9ramming.com/random-functi...-1140.html
And for looping of frames or screens (every 1/4 seconds) i used label and goto, you have it here :
http://www.pro9ramming.com/c-label-and-goto-t-961.html
So it basically fills random chars on random places in 2-dimensional array or matrix every 1/4 seconds and outputs that on the screen.
And another explanation would be width and height of screen. Well i just counted chars that can be outputted in one line and row.
So there are 24 lines in which you can put 79 characters. That is standard size of Dev-Cpp window.
Because i used system("cls") the command for cleaning screen, it can maybe look flashy because that is slow command.
And for text color i used system() function and standard color method used in batch files (so this only works on Windows).
color method is used like this :
COLOR [attr]
Sets the default console foreground and background colors.
Color attributes are specified by TWO hex digits -- the first
corresponds to the background; the second the foreground (text). Each digit
can be any of the following values:

Code:

0 = Black       8 = Gray

    1 = Blue        9 = Light Blue

    2 = Green       A = Light Green

    3 = Aqua        B = Light Aqua

    4 = Red         C = Light Red

    5 = Purple      D = Light Purple

    6 = Yellow      E = Light Yellow

    7 = White       F = Bright White

If no argument is given, this command restores the color to what it was
when CMD.EXE started. This value either comes from the current console
window, the /T command line switch or from the DefaultColor registry
value.
That would be all about explanations and now the code :

Code:

# include <iostream>

# include <cstdio>

using namespace std;

unsigned short int a[24][79];

int random(int lowest, int highest)

{

srand(time(0)+rand());

int random_integer;

int range=(highest-lowest)+1;

for(int i=0; i<20; i++)

{

  random_integer=lowest+int(range*rand()/(RAND_MAX+1.0));

}

return random_integer;

}

void sleep(clock_t wait)

{

clock_t goal;

goal = wait + clock();

while( goal > clock());

}

void output()

{

 unsigned short int i,j;

 for (i=0;i<24;i++) 

 {

   for (j=0;j<79;j++)

    {

     if (a[i][j]>0)

       cout<<char(a[i][j]);

     else

       cout<<" ";

    }

   cout<<endl;

  }       

}

void fill_with_zeros()

{

 unsigned short int i,j;

 for (i=0;i<24;i++) 

 {

   for (j=0;j<79;j++)

    {

     a[i][j]=0;

    }

  }      

}

int main()

{

 system("color A");

 unsigned short int i;

 unsigned int br,max;

 fill_with_zeros();

 br=0;

 max=random(100,500);

 top:

  for (i=0;i<random(1,3);i++)

  a[random(1,24)][random(1,79)]=random(1,255);

   system("cls");

   output();

   sleep(250);

   br++;

   if (br>max)

     {

       fill_with_zeros();

       br=0;

       max=random(100,500);

     }

 goto top;  

 cin.get();

}

I hope that you like it !

se7en · 02-27-2010, 04:16 PM

Nice share dude.
I definitely like it!

***drdebcol*** · 02-27-2010, 05:14 PM

If you like the way above, Maybe you'll like this too :
http://www.pro9ramming.com/something-rea...t-966.html
It is not movement, just an ordinary picture, but it took me some time to make !