I saw an interesting and very usefull thing in new zdoom.
it is a Fast Projectile basic class. when making a projectile of such a class it may move and hit on any speed without bugs. as i understand it is calculated in special way. and in vavoom when setting in decorate projectile speed > 32 it begin to fly in some strange directions.
I want to have an ability to create some like fast projectiles in vavoom (tracer bullets for example)