Scamp with mouse scrolling input

[MarcEvanstein]

@musescore1983

But it does not run smooth. I suspect this is because there is some clock in the background which is not synchron.

Do you have any idea how to solve this (only the main() function)?

So, when you have a GUI framework, it often has it’s own way of managing time. In this case, it’s often best to run the session as a server. See this example:

Note durations clipping in interactive session

If I understand correctly, you’re trying to get it to play the notes sequentially (as a melody) after every user input? As you’ve discovered, the system of clocks does not expect to be paused unexpectedly for input, which is why it clips notes afterward, since it checks the time and thinks it’s way behind schedule. The correct approach is to use run_as_server(), but then also to wrap the melody in a function and fork it. That way it has its own time stream, and the notes can block as expected: …

This example might also be a good one to check out, though it’s a little complicated (it uses PyQt):

~marcevanstein/scamp (master): examples/marc/barlicity.py - sourcehut git

You can see in the code that I’ve set the mouse press event to call the Barlicity.start() function, which then instantiates a Session, asks it to run as server, adds some instruments, and forks the playback functions.