This was always used with 'consoleplayer' which really is the only thing making sense here. But this is a part of the global state which should be avoided in play code.
In particular, this makes no real sense in case of secondary maps where it should always return false.
# Conflicts:
# src/fragglescript/t_func.cpp
# src/g_inventory/a_keys.cpp
# src/p_acs.cpp
# src/p_mobj.cpp
# src/p_user.cpp
# src/r_data/r_interpolate.cpp
# src/r_data/r_interpolate.h