IsShieldOut

Returns 1 if the actor currently has a shield "out". Out, in this case, means that the shield is equipped and being held/used/visible to others. For example, you can have a shield "equipped" in the shield slot, but if you have a bow or two-handed weapon drawn, or a torch in your off-hand, or have no weapon and are using your bare fists, IsShieldOut will return 0.

Notes

This does not check whether the actor is actively blocking or not. If you want to detect when the player is blocking, then you need to use OBSE's Input Functions.