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⌂ ∞ Elite on the BBC Micro and NES

Drawing circles: LAUN

[Elite-A, Parasite]

       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
 References: This subroutine is called as follows:
             * TT110 calls LAUN




 This is shown when launching from or docking with the space station.



.LAUN

 JSR n_sound30          \ Call n_sound30 to make the sound 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