Projectile

A projectile is an actor that moves at a constant speed each tic (unless A_ScaleVelocity or similar function is used to accelerate or decelerate it). For very fast projectiles, the normal collision code does not work and the actor should instead inherit from FastProjectile.

Projectiles generally have the Projectile combo, but they only really require MISSILE. Any actor without the MISSILE flag is not a projectile.