Smooth Moving

[fumanshoo]

So just as a test so that I can better understand the Curve function, I have a character and a box. When ever the character gets less than two units from the cube, the cube moves one unit to the right and one unit forward ( diagonally ). I don't fully understand how to implement a curve function from Aggror's tutorial on YouTube, so I was wondering of you guys could help out... my goal here is to make the cube move smoothly and diagonally... here's the code:

 

box = CreateCube()
box:SetPosition(Vec3(5,.5,0))
steamPunk = LoadModel("abstract::steam punk.gmf")
steamPunk:SetPosition(Vec3(0,0,0))
steamPunk:SetRotation(Vec3(0,180,0))
steamPunk:SetScale(Vec3(.6,.6,.6))
steamPunk:SetParent(controller)
if EntityDistance(controller,box) <2 then
 MoveEntity(box,Vec3(1,0,1))
end