How would I make a trajectory guide of where a grenade would go when I throw it?
Like a curve and should be visible to player before throwing?
You should calculate bezier curves using at least 3 points to calculate the curve.
Honestly for me its pretty hard to do that, but theres some bezier curves modules that returns the curve and even tween the curve
On this website you can calculate the trajectory, it also has a detailed explanation on every step. With this you can create a visual guide.
Sorry for the late reply, but how would I make it into a visible line?
make a bunch of attachments on this trajectory. connect with beams.
idk probably.
There are a bunch of ways, which would be best depends on how you want it to look among other things.
Some examples would be: beams (like ValtryekRBLX said), parts or maybe with a WireFrameHandleAdornment (though I don’t know whether this works outside of studio)