* make npc's emotion reply on player's emotion
* @param playerAction - what player doing with npc
* @param npcAction - npc's emotion reply on player's emotion
*/
public void addEmotionReply(final String playerAction, final String npcAction) {
add(ConversationStates.IDLE, Arrays.asList("!me "), new EmoteCondition(playerAction),
ConversationStates.IDLE, null, new NPCEmoteAction(npcAction));
add(ConversationStates.ATTENDING, Arrays.asList("!me "), new EmoteCondition(playerAction),
ConversationStates.ATTENDING, null, new NPCEmoteAction(npcAction));
}