In the game I’m making I’d like to have some rounds that are fired show the trail they traveled (tracer rounds) rather than just appearing as puffs on the wall somewhere possibly out of sight due to distance. Besides spawning an actual projectile and having it leave a trail, is there a way to draw a line in space from a point of origin to the termination point?
One way is to use the Line Renderer
Yes, that should do nicely.
The trail render looks to be the same thing customized for that purpose so that might work as well.