Path: chuka.playstation.co.uk!scea!peter_alau@playstation.sony.com
From: Elliott Lee <tenchi@jps.net>
Newsgroups: scee.yaroze.programming.2d_graphics,scee.yaroze.beginners,scea.yaroze.programming.2d_graphics
Subject: Re: Need help with arrays
Date: Tue, 18 Aug 1998 15:38:07 -0700
Organization: Cisco Systems
Lines: 59
Message-ID: <35DA024F.10FF8B2B@jps.net>
References: <6rcfhe$l2e4@chuka.playstation.co.uk>
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Xref: chuka.playstation.co.uk scee.yaroze.programming.2d_graphics:518 scee.yaroze.beginners:506 scea.yaroze.programming.2d_graphics:401

Weird.  I don't know what you're trying to accomplish either, but try
this?  What is the effect you want?  Static?

#include <stdio.h>
#include <libps.h>
#include <memory.h>
 
u_short scr[240][320];
u_short line[640];

void main(void)
  {
  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;

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

  while(1)
    {
    VSync(0);

    // copy 640 bytes (320 u_shorts/ints):
    //
    // scr[][] dereferences to a memory location.
    // scr[]   is a pointer to the final [] array
    // scr     is a pointer to the [] pointer to the final []
    //
    for(counter = 0; counter < 240; counter++) 
      { memcpy( scr[counter], line[rand()%320], 640 ); }

    LoadImage( &screen, *scr );

    DrawSync(0);
    GsSwapDispBuff();
    }  // while(1)
  ResetGraph(0);
  }  // void main(void)

-- 
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