Path: chuka.playstation.co.uk!news
From: "Nigel Critten" <Nigel@gamewarenospam.demon.co.uk>
Newsgroups: scee.yaroze.freetalk.english
Subject: Re: BG Maps
Date: Tue, 13 Mar 2001 17:17:58 -0000
Organization: PlayStation Net Yaroze (SCEE)
Lines: 64
Message-ID: <98lku0$h8r1@www.netyaroze-europe.com>
References: <98h41o$7i11@www.netyaroze-europe.com> <98idjo$eo92@www.netyaroze-europe.com>
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I've thought about doing it that way before, it depends how much hassle I
have with the BG stuff, I've had a good read of it this time, I'm using tUME
for the maps so I hope to use them, I can always write an exporter for tUME
for a specific format... should be fun :)

I've also ripped the code apart and put it back together its a little bit
cleaner now, I've a new main loop which has finally allowed me to exit
cleanly so it's a bit quicker developing now because I'm not resetting the
Yaroze every 5 minutes :) should have done it ages ago.

And I've also started a new diary on my Yaroze website, like I say nobody
reads them but i found them very useful, 5 months afterwards it nice to see
what you were thinking :)

Thanks again for the help so far...

Nigel

"Derek da Silva" <dasi@eidosnet.co.uk> wrote in message
news:98idjo$eo92@www.netyaroze-europe.com...
Hi

These might be useful - both progs use the BG functions.

www.netyaroze-europe.com/~shaughnj/ftp/bgedit.zip
www.netyaroze-europe.com/~shaughnj/ftp/bgview.zip

Or, you can avoid using the lib function and use something similar to this :


u_long scrolly, scrollx; // map scroll offsets
u_char bg_data[NTILEH][NTILEW];

tile.w = 16;
tile.h = 16;

void draw_bg(void)
{
    u_long x, y, mx, my, ox, oy;

    ox = scrollx & 15;
    oy = scrolly & 15;

    for (y=0, my=scrolly>>4; y<=8; y++, my++)
    {
        tile.y = (y<<4)-oy;

        for (x=0, mx=scrollx>>4; x<=20; x++, mx++)
        {
            tile.x = (x<<4)-ox;

            tile.u = (bgdata[my][mx]%16)<<4;
            tile.v = (bgdata[my][mx]/16)<<4;

            GsSortFastSprite(&tile,&WorldOT,0);

        }
    }
}

cheers
Derek