Actor problems please help

AppTapLLC

I have an actor that moves forward at a constant speed when an attribute equals 1.
I also have an enemy actor that moves towards the actor in the sentence above, I want the actor in the top sentence to stop moving when he is (for example 150 pixels away) from the enemy actor

JohnPapiomitis

this video shows u how to use magnitude (which is the best way) to determine distant between actors. So set that up and whenever your magnitude attribute is < whatevever you want, change self motion linear x and motion linear y to 0

there ya go

FloridaGames

Create an these attributes:
actor 1 x
actor 1 y
actor 2 x
actor 2 y
constrain all these attributes to their certian positions. Ex: Constrain attribute: game.actor 1 x to self.position x.
create these rule for actor :
when any:
(actor 1 x - actor 2 x) < or = 150
(actor 1 y - actor 2 y) < or = 150
then: change velocity to 0.