So here we go with Here Goes, my first entry into the Intro Creation Competition for 2019 and, as promised yesterday, it’s for the 4K category; despite the limited memory footprint it’s still got 200 scanlines worth of raster colours, the logo and scrolling message required for all entries and a piece of music from Sack; the latter is a SID cover of the Amiga module Freeman which comes in at under 950 bytes long when Goattracker has finished weaving it’s magic!
The memory footprint for this one is a close to the wire $0400 to $13ff and a smattering of zero page use, with the screen data being decompressed directly to $0400 before the code starts up to save having to keep a second copy somewhere else beforehand. The source code can be grabbed from GitHub for anybody who might enjoy prodding around my slightly spaghetti-like code…
The original Gamerz Xtreme Intro was written in 2016 for the Twitch channel of the same name and, after a request on Twitter a couple of months back from the channel’s owner and a little work from myself and aNdy, there’s now a second intro which hopefully turned up just in time for a planned channel refresh and transition to Mixer. This new intro is the rather imaginatively titled Gamerz Xtreme Intro 2 and it has everything you could want from an intro; lots of moving raster bars, bouncing multicolour bitmap logos with wave effects, a sideborder ROL scroller and some great music.
As with the previous intro, this was provided to Psycho Stick in source code form including the relevant tools to build it and a configuration file. The latter is basically an assembler include containing all of the bits which can be edited to change the scrolling message text and tweak it’s colours or select one of the pre-made raster effects for the main part of the screen. Once that file has been modified and saved, a supplied batch file can be triggered which assembles the code and crunches it down ready for use.
Getting this done was a lot of fun and one piece of “overkill coding” only becomes visible when the “debug borders” option is enabled in VICE, all of the colour splits in the main effect area are lined up to the same cycle for the entire height of the screen… that took far too much effort to get right, especially considering it’s completely hidden from view and nobody would’ve even noticed either way had I not drawn attention to them!
Here’s a surprise release under the Cosine flag, Unused Shmup Tunes is a harrowing morality tale about the evils of capitalism and the long term, far reaching effects they have on society as a whole… no? Okay, it’s actually a music collection which contains four pieces that aNdy composed for a shoot ’em up some idiot with a blog was meant to code…
aNdy also wrote the code driving the collection and drew the rather lovely PETSCII logo using his nearly complete screen editor for good measure! For those with inquisitive minds, all of the source code and a swathe of work files have been bundled up with the C64 executable in the archive that can be blagged from the Cosine website or at the CSDb.
So yeah… as I hinted above the tunes are actually for a scrolling shoot ’em up I was talking about doing as part of the rewrite of my C64 coding tutorials but, since I have the attention span of half a dozen ferrets in a particularly interesting museum, that’s been pushed onto the back burner for the foreseeable and it would’ve been a waste to let the music sit around gathering metaphorical dust.