[goodguy]

Вот пример создания простого статического тела в 2.1а

public static function create(x:int, y:int, w:int, h:int, world:b2World, ratio:Number, centered:Boolean = false):void {
			var shape:				b2PolygonShape	= new b2PolygonShape();
			var bodyDef:			b2BodyDef 		= new b2BodyDef();
			var body:				b2Body;
			var fixture:			b2FixtureDef	= new b2FixtureDef();
			fixture.shape							= shape;
			if (centered) bodyDef.position.Set(x / ratio, y / ratio);
			else bodyDef.position.Set((x + w / 2) / ratio, (y + h / 2) / ratio);
			shape.SetAsBox(w / 2 / ratio, h / 2 / ratio);
			body = world.CreateBody(bodyDef);
			body.CreateFixture(fixture);
		}