Relationships
Relationships are what NPC characters use to know whether they should attack or not. the entity "ai_relationship" will adjust an NPC character's relations with the Player (referred to as !Player in Hammer)or another NPC character.
The entity has a number of settings built in, these though are the important ones:
Subject(s) - The NPC receiving the relationship change (!Player will work also).
Target(s) - The target the picked NPC will change relationships with (!Player also works).
Disposition - Type of relationship, Hate / Neutral / Like / Fear.
Reciprocal - If true it will mirror the relationship to the Target, basically turning the Target's relationship with the Subject to whatever has been set.
Other settings:
Name - Essential if you plan to turn this on / off during game.
Radius for Subject - ????
Start Active - Whether the relationship should start active or not. (default FALSE)
By Rasirez.