PLAY_ demo piano

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• Touch

SP4CEBAR 2022-11-04 15:47 (Edited)

Glide Over The Piano

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My PLAY_(V,N) subprogram is like NX "PLAY" but accepts any number for the note (N), so you could use notes like 50.5, -10, 100

note: notes above 96.62 have a frequency that's too high for NX to handle

SUB PLAY_(V,N)
  A=$FF40+12*V
  POKEW A,16*16.35*2^((N-1)/12)
  POKE A+2,PEEK(A+2) OR %11000000
END SUB

While making this I wrote the TOUCH_CELL(B,X,Y) function
Which uses sprites to figure out what BG and what cell have been touched

Also, the piano is generated (SUB PIANO), and so are the notes (SUB KEYSKIP)

SP4CEBAR 2024-07-02 10:27

This demo may very well have been inspired by the piano on the Garage Band iPad app

SP4CEBAR 2026-03-25 13:41

By the way, is it out of tune?

NerdPenguin2836 2026-03-28 22:36

yeah sounds about 80c flat when I don't move the cursor off the note

SP4CEBAR 2026-04-03 12:25

thanks for confirming!