Function used in mission creation.

Objective: The player has to escort a single NPC or a group along a path. This path can be set by a spline, or the escorted group can follow the player during his travel. This objective is usually controlled by instructions from the AIS:

• end_escort: in case of success
• fail: in case of failure

name: Objective name, only used by the mission designer.

group_to_escort: Tag name of the group to be escorted.

hide_obj (Boolean): Prevent the step to be displayed in the mission log.

overload_objective: 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.

save_all (Boolean): If checked, the objective fails when a member of the escorted group dies.