find all SC_CONCENTRATE on status.cpp
case SC_SIGHT: // Reveal hidden ennemy on 3*3 range
case SC_CONCENTRATE:
status_change_end(bl, SC_HIDING, INVALID_TIMER);
status_change_end(bl, SC_CLOAKING, INVALID_TIMER);
status_change_end(bl, SC_CLOAKINGEXCEED, INVALID_TIMER);
status_change_end(bl, SC_CAMOUFLAGE, INVALID_TIMER);
status_change_end(bl, SC_NEWMOON, INVALID_TIMER);
status_change_end(bl, SC_STEALTH, INVALID_TIMER);