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Drawing circles: LAUN

[BBC Micro cassette version]

Name: LAUN [Show more] Type: Subroutine Category: Drawing circles Summary: Make the launch sound and draw the launch tunnel
Context: See this subroutine in context in the source code Variations: See code variations for this subroutine in the different versions References: This subroutine is called as follows: * Main flight loop (Part 9 of 16) calls LAUN * TT110 calls LAUN

This is shown when launching from or docking with the space station.
.LAUN LDA #48 \ Call the NOISE routine with A = 48 to make the sound JSR NOISE \ of the ship launching from the station LDA #8 \ Set the step size for the launch tunnel rings to 8, so \ there are fewer sections in the rings and they are \ quite polygonal (compared to the step size of 4 used \ in the much rounder hyperspace rings) \ Fall through into HFS2 to draw the launch tunnel rings