quote:

ORIGINAL: somebody621

Can't be too hard... =D Maybe just plot a bunch of point's x, y, and z for two intertwining sine curves. The convert to cartesian coordinates, connect lines, and boom you're done. lol. I'll help with the 3-d part, but -no thanks - I don't want to participate-too busy.

var dist:Number = 800;
var centerX:Number = Stage.width/2;
var centerY:Number = Stage.height/2;
var pi = Math.PI;
var wave = new Object();
wave.radius = 50;
wave.interval = 25;
function findCar(x:Number, y:Number, z:Number):Array{
	//This function is almost copied code from Glen Rhodes' book, "Macromedia Flash MX 2004 Game Development"
	var zFactor:Number = dist/z;
	var sX:Number = x * zFactor + centerX;
	var sY:Number = y * zFactor + centerY;
	var ar:Array = [sX, sY];
	return(ar);
}

for(y = -centerX; y<Stage.height; y+= wave.interval){
	var loop:Number = y/wave.interval
	var d1:String = "Object1_" + loop;
	wave[d1] = new Object();
	var d2:String = "Object2_" + loop;
	wave[d2] = new Object();
	var a:Number = y * 30;
	var radians:Number = a * pi/180;
	var z:Number = Math.sin(radians)*wave.radius;
	var x:Number = Math.cos(radians)*wave.radius;
	var x2:Number = x * -1;
	var z2:Number = z * -1;
	var ar1:Array = findCar(x, y, z+ 1500);
	var ar2:Array = findCar(x2, y, z2+1500);
	wave[d1].sx = ar1[0];
	wave[d2].sx = ar2[0];
	wave[d1].sy = ar1[1];
	wave[d2].sy = ar2[1];
	var n1:String = "b1_" + loop;
	var n2:String = "b2_" + loop;
	_root.attachMovie("b", n1, loop + 600);
	_root.attachMovie("b", n2, loop);
	var b1:MovieClip = _root[n1]
	var b2:MovieClip = _root[n2]
	b1._x = ar1[0];
	b1._y = ar1[1];
	b2._x = ar2[0];
	b2._y = ar2[1];
	//again, formula from Glen Rhodes' book, "Macromedia Flash MX 2004 Game Development"
	b1._xscale = b1._yscale = 100 * dist/(z + 1500);
	b2._xscale = b2._yscale = 100 * dist/(z2 + 1500);
	trace(b1._xscale);
	_root.lineStyle( 1, 0x0000ff, 100 );
	_root.moveTo(ar1[0], ar1[1]);
	_root.lineTo(ar2[0], ar2[1]);
}

quote:

ORIGINAL: somebody621

If an .as file is hosted online, how would you access it?

• open fla document
  
• right click on "Layer 1" and select "add motion guide"
  
• click on frame 1 in the "Guide layer" and draw whatever you want but it has to be in one continuous line (i use pencil tool)
  
• click on frame 1 in "layer 1" and create an object you wish to move on the 'track' for now just make a circle to keep it simple,
  
• select the circle and make it a movie clip, then click and drag it onto the track (the white circle should hook onto the track)
  
• right click on frame 1 in "layer 1" and make it motion tween. then make a frame on 10, 20, 30. and just 1 frame on 30 for the "guide layer
  
• on 10, place the circle on another part of the track, then do the same for 20 and 30 should be back where it started
  
• now click Ctrl Enter to play it
  
•