X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f996b,228fadf8af1d0244 X-Google-Attributes: gidf996b,public X-Google-ArrivalTime: 2001-07-15 14:00:51 PST Path: archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!skynet.be!newsfeed.iinet.net.au!news.iinet.net.au!not-for-mail From: Bateau Newsgroups: alt.ascii-art Subject: Re: Blackthorne Date: Mon, 16 Jul 2001 04:53:43 +0800 Message-ID: References: <19tRO+KzbYMrM9evqpKDGlIa5uVU@4ax.com> <9iso6m$139$1@news8.svr.pol.co.uk> X-Newsreader: Forte Agent 1.6/32.525 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 54 NNTP-Posting-Host: i205-066.nv.iinet.net.au X-Trace: news.iinet.net.au 995230570 19715 redninja@203.59.205.66 Xref: archiver1.google.com alt.ascii-art:6672 Tommy: Do you expect me to reply? Bateau: No Mr Tommy, I expect you to die! >those logos where really good, how did you get the animation? and the time >delay with the comet without any noticeble change in colour? Well startup screens are just normal bmp files but with one byte changed. That byte is a palette number. It means that entry on the palette and every one after it will cycle among themselves. For example, if the byte was set to 25 (37 in decimal), and the palette looked like: abcdefghijkl mnopqrstuvwx yzabcdefghij kLMNOPQRSTUV Then the 38th (L) onwards would scroll, becoming: abcdefghijkl mnopqrstuvwx yzabcdefghij kMNOPQRSTUVL Then: abcdefghijkl mnopqrstuvwx yzabcdefghij kNOPQRSTUVLM Etc. That's what causes the little blue bar to scroll in the default Windows startup screen. The whole picture only uses a few colours so there is lots of spare room in the palette. I set all the spare entires in the palette to the same colour as the sky, then set them and a few different coloured entries (for the comet) to scroll. Then I had to set each pixel along the path of the comet to a set palette number so that they would cycle through to the light blue colour of the comet at the right time and it make it look like the comet was moving. The comet is actually made up of 2 sets of colours every time you see it but the comet stays in the same shape. That's because each of those 2 sets of colours is divided by half the spare background coloured palette entries. This site explains it well: http://www.geocities.com/SiliconValley/Campus/7779/how.html -- | _ .\ ~~ _ ^~ | <')_,/ , ; .\ >(')__, . ` ' , ,______________._ | (_~=/ \._`.'. .\ (_~_/ _, '------:_______ ;==( *BANG* | ='- \=~_) ; .\ ~^~~^~ ` (_~_/ | | `-\ \ *BANG* | -'= .\ ~^~ ~^~~^~ `~' \_; |ICQ:11367619 EMAIL:bateau:-)jupiter-io.net SITE:www.flashback-aw.net