PROJECTILE RPG IMPACT
Setting this flag in the PROJ_WORKSLIKE variable means that the actors\players that are hit by the projectile will receive direct damage in addition to hitradius, making the total damage close to twice PROJ_EXTRA, similar to the hard-coded RPG projectile. The projectile will also add momentum with direct damage, which can be used in conjunction with setting PROJ_HITRADIUS to 0 in order to create an effect like shooting a rock, if you want it to be realistic.