I'm trying to set an area whereby if an object enters it, it becomes slowed down.
This is what i've got so far:-
PhysicsBody = BodyFactory.CreateBody(World, new Vector2(x,y));
PhysicsBody.BodyType = BodyType.Static;
List<Vertices> vertList = EarclipDecomposer.ConvexPartition(verts);
Fixtures = FixtureFactory.AttachCompoundPolygon(vertList, density, PhysicsBody);
What setting do I need for the area to cause a slow down to other objects - is it friction?
This post has several solutions for you.
http://farseerphysics.codeplex.com/discussions/240883
You could use friction, drag coffecicients, LinearDamping, the VelocityLimietController or to just have two engines and switch between the two.