Path: chuka.playstation.co.uk!news
From: "Chris Searle" <chris@cxs97c.netkonect.co.uk>
Newsgroups: scee.yaroze.programming.2d_graphics,scee.yaroze.beginners,scea.yaroze.programming.2d_graphics
Subject: Need help with arrays
Date: Mon, 17 Aug 1998 21:51:29 +0100
Organization: PlayStation Net Yaroze (SCEE)
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Xref: chuka.playstation.co.uk scee.yaroze.programming.2d_graphics:515 scee.yaroze.beginners:504 scea.yaroze.programming.2d_graphics:398

Hi, I've got an array, u_long line[640], and want to copy a random 320
chunks to a two-dimensional array here some source:

#include <stdio.h>
#include <libps.h>
#include <memory.h>

u_long scr[240][320];
u_long line[640];

main() {
  RECT screen;
  short counter;

  SetVideoMode(MODE_PAL);
  GsInitGraph(320, 240, 4, 0, 0);
  GsDefDispBuff(0, 0, 0, 0);

  screen.x = screen.y = 0;
  screen.h = 240;
  screen.w = 320;

  for( counter = 0; counter < 640; counter++) {
    if(rand()%2) line[counter] = (1<<15) + (31<<10) + (31<<5) + 31; //set
pixels to
    else line[counter] =  (1<<15);                                  //black
or white
  } // setup first array

  while(1) {
    VSync(0);

    for(counter = 0; counter < 240; counter++) {           //This part
doesn't work
      memcpy( scr+(counter*320), line+(rand()%320), 640 ); //copy 640 bytes
(320 int's)
    }

    LoadImage( &screen, *scr );

    DrawSync(0);
    GsSwapDispBuff();
  } // end while

  ResetGraph(0);
} // end main


This is a simple programming question but I do need some help.

Cheers