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Functions:

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SetAnchor( centerx, centery, distance_start, percent_subtract )
Parameters:
Name Type
centerx Integer world coordinate
centery Integer world coordinate
distance_start Integer
percent_subtract Integer
Explanation
Sets the NPC's 'anchor' point. The NPC will have difficulty moving far away from this coordinate, and will generally stay near it.
centerx and centery define the anchor point.
distance_start is the distance away from the anchor point at which the npc may not be able to move beyond. Under this distance there is a 100% chance the move will succeed. If 0, it disables the anchor point.
percent_subtract is how much to subtract from the normal 100% chance for each move beyond the distance_start boundary. So if this value is "20", the first move beyond the distance_start range (and away from the anchor point) will only have an 80% chance of succeeding. The next one will have a 60% chance. So the NPC will tend to move back toward its anchor point.
The anchor point has no effect as long as the NPC is in war mode.
Return values
1 on success
Errors
"Invalid parameter type"
"Invalid Coordinates for Realm"
Related
NPC