How do I make a cannon?

[LLS]

We use two lines like checklines and a curve
a line for the canonstart
one line for the canon end

The Canon Start has 2 parameters to fill in:
- the curve it must follow
- the canonical object

The curve must start at the canonstart and end at the canonend (regardless of the shape of your curve).
Check the direction of the curve if necessary to ensure it goes from canonstart to canonend