Masca emotiei, doar la anumite emotii

First, you have to define a new request(in cmd_emotions.cpp). So for that

//Search:
#define TARGET_DISARM    (1 << 5)

//and add bellow:
#define NEED_ITEM    (1 << 6)
Then you have to insert that request, into emotions enum, so for that:

//Find and change:
// DANCE ->as requested..
    { "占쏙옙1",    "dance1",    NEED_ITEM,    1.0f },
    { "占쏙옙2",    "dance2",    NEED_ITEM,    1.0f },
    { "占쏙옙3",    "dance3",    NEED_ITEM,    1.0f },
    { "占쏙옙4",    "dance4",    NEED_ITEM,    1.0f },
    { "占쏙옙5",    "dance5",    NEED_ITEM,    1.0f },
    { "占쏙옙6",    "dance6",    NEED_ITEM,    1.0f },

//or include any other emotion, if you want to.
Now, change the can_emotion bool, like this:

bool CHARACTER_CanEmotion(CHARACTER& rch)
{
    return true;
}
And finaly, do the item check, for dance_emotions:

//Search:
    if (IS_SET(emotion_types[i].flag, WOMAN_ONLY) && SEX_MALE==GET_SEX(ch))
    {
        ch->ChatPacket(CHAT_TYPE_INFO, LC_TEXT("占쏙옙占쌘몌옙 占쏙옙 占쏙옙 占쌍쏙옙占싹댐옙."));
        return;
    }

//and add bellow:
    if (IS_SET(emotion_types[i].flag, NEED_ITEM) && !ch->IsEquipUniqueItem(UNIQUE_ITEM_EMOTION_MASK))
    {
        ch->ChatPacket(CHAT_TYPE_INFO, LC_TEXT("You need Emotion Mask for that...bla bla.")); //here you have to add your message
        return;
    }