Crack Intro (C64)

It’s been noted on a few occasions previously that I’m not particularly fond of the “festive season”, so here I am on the day itself applying WordPress updates and releasing another intro for the CSDb Intro Creation Competition. This one is rather literally called Crack Intro and was inspired by a couple of ICC-related releases with the same name from nomiStake. They all rely on the same “pun” – the idea that it’s an intro with some kind of crack on the screen – so the only real distinction is that mine actually fits within the competition’s rules, although I had to check beforehand that using a copyright symbol counted as a Cosine logo.

Writing the scrolling message for this one was pretty uncomfortable; the trick being used for the scroller relies on there being eight possible versions of each character so they can arbitrarily roll around within their own eight pixel wide cell, but that means there can only be thirty two characters. That means I get a space, 26 letters and five punctuation marks which are full stop, comma, question mark, exclamation mark and an asterisk so I could highlight phrases in a similar way to the C64’s power up message. This rolling font is generated when the code starts up, using the ROM character set to save a little space even though I have more than enough room left for some bespoke characters.

For anyone wondering, the copyright symbol is built from sprites and uses five in total and recycles the top row of three for the bottom whilst the middle two are being displayed. The cracks are built from characters apart from where they have to overlap the scrolling message; that’s where the spare sprites take over and the fractured parts of the power up message are using sprites for the text. The music is by Sean Connolly and a cover of the tune from Star Trooper by Melbourne House, and originally composed in 1984 by Clifford Ramshaw; it has a lovely, slightly manic quality that I felt blended well with what was happening on screen.

One thought on “Crack Intro (C64)

  1. I’ve seen cracked screen effects in various demos on different machines before, but I love the slight offset on the power up screen to tie in with the crack and the ‘impossible to read’ scroller (as every good scroller should be) with it’s ‘wonky’ scroll, again to tie in with the cracks, is a neat idea nicely executed.

    Good job Mr. T.M.R!

    And nice tune by Odie as always; slightly mad to go with the screen!

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