ZDoom

You're right, but to be more accurate: DamNums show the damage you does to the enemies in the 3d world coords. DmgDirOverlay mainly indicate the direction from where the player take damage on a 2d hud plane, which is always visible (if you don't use any angle restriction option). The default ...

Configurable overlay for GZDoom to display from which direction the player is receiving damage. Screenshot - got hit by the 2 shotguys in the front plus the two on the sides: https://s4.postimg.org/sdktobe1l/Doom_Dmg_Dir_Ov.png There are several customization options for appearance and gameplay. If ...