How to make an actor move in a figure 8

maxerov

I would like to make a behavior to make an actor move in a sideways figure eight (like an infinity sign). I can't figure out how to make it work smoothly. It seems like it should be simple. Does anyone have any ideas?

ORBZ

move in a circle, but then invert the radius every half revolution

radius = sin(2*time)*100
x = cos(time)*radius
y = sin(time)*radius

that should do it, haven't tested it though. May not work

edit: nope, that doesn't work. It makes a pretty flower / spirograph though

old_kipper

Orbz's version is more elegant but you can do it with interpolates as they can be used to pull curves if you pair them in 'ease in' and 'ease out' to change the x and y position.

kipper