Function used in mission creation.
Objective: The player has to find a NPC and talk to him through the contextual menu, generally used in introduction of a dyn_chat.
name: Objective name, only used by the mission designer.
npc_name: Tag of the NPC that has to be talked to.
hide_obj (Boolean): Prevent the step to be displayed in the mission log.
overload_objective (Optional): Allow to set a specific a description of the mission. See text guidelines for the formatting requirements.
roleplay_objective (Optional): Allow to add a description to the step.
phrase_menu: Text that appears in the NPC contextual menu. See text guidelines for the formatting requirements.