[Closed] collision position script controller help

here is with max distance

delete objects
 (
 	local p, d, s, maxdist = 30 
 	p = plane name:"terrain" width:100 length:100 widthsegs:40 lengthsegs:40 wirecolor:green 
 	d = point name:"control" pos:[0,0,30] size:10 box:on axistripod:on cross:on wirecolor:yellow isselected:on
 	in d (s = sphere name:"target" radius:3 wirecolor:orange)
 
 	addmodifier p (NoiseModifier fractal:on strength:[0,0,20] seed:2)
 	addmodifier p (Bend BendAxis:0 BendAngle:-120)
 	addmodifier p (Bend BendAxis:1 BendAngle:-120 BendDir:-90)
 
 	c = s.pos.controller = position_script()
 	c.addconstant "maxdist" maxdist 
 	c.addnode "terrain" p
 	c.addnode "parent" d
 	c.addtarget "radius" s.baseobject[#radius]
 	ss  = "r = intersectRay terrain (ray parent.transform.pos -parent.dir)
"
 	ss += "if r != undefined and (distance r.pos parent.pos) < maxdist then (r.pos + parent.dir * radius) * (inverse parent.transform) else [0,0,0]
"
 	c.setexpression ss
 	c.update()
 )

edited… just cleaned it up

you’ve already found it yourself …

its good to know i did it the right way
thanks again denis