quote:

ORIGINAL: lil boi blue

for motion guide do the following

• 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
  
• 
  

var dist:Number = 800;
var centerX:Number = Stage.width/2;
var centerY:Number = Stage.height/2;
var pi = Math.PI;
var wave = new Object();
var fl:Number = 250;
wave.radius = 50;
wave.interval = 25;
wave.angle = 15.5;
_root.lineStyle( 1, 0x0000ff, 100 );
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 o1:Object = wave[d1];
	var o2:Object = wave[d2];
	var a:Number = y * wave.angle;
	var radians:Number = a * pi/180;
	o1.z = Math.sin(radians)*wave.radius;
	o1.x = Math.cos(radians)*wave.radius;
	o1.y = y - centerY + 25;
	o2.x = o1.x * -1;
	o2.z = o1.z * -1;
	o2.y = o1.y;
	var n1:String = "b1_" + loop;
	var n2:String = "b2_" + loop;
	_root.attachMovie("b", n1, loop + 1000);
	_root.attachMovie("b", n2, loop);
}
function onEnterFrame():Void {
	clear();
	_root.lineStyle( 1, 0x0000ff, 100 );
	for (var i:Number = 0; i<loop; i++) {
		var n1:String = "b1_" + i;
		var n2:String = "b2_" + i;
		var b1:MovieClip = _root[n1];
		var b2:MovieClip = _root[n2];
		var ball:Object = wave["Object1_"+i];
		var ball2:Object = wave["Object2_"+i];
		var angleY:Number = (centerX)*.0005;
		var cosY:Number = Math.cos(angleY);
		var sinY:Number = Math.sin(angleY);
		var x1:Number = ball.x*cosY-ball.z*sinY;
		var z1:Number = ball.z*cosY+ball.x*sinY;
		var x2:Number = ball2.x*cosY-ball2.z*sinY;
		var z2:Number = ball2.z*cosY+ball2.x*sinY;
		ball.x = x1;
		ball.z = z1;
		ball2.x = x2;
		ball2.z = z2;
		var scale:Number = fl/(fl+ball.z);
		b1._xscale = b1._yscale=scale*100;
		b1._x = centerX+ball.x*scale;
		b1._y = centerY+ball.y*scale;
		var j:Number = -ball.z;
		while(_root.getInstanceAtDepth(j) != undefined){
			j--;
		}
		b1.swapDepths(j);
		
		
		var scale2:Number = fl/(fl+ball2.z);
		b2._xscale = b2._yscale=scale2*100;
		b2._x = centerX+ball2.x*scale2;
		b2._y = centerY+ball2.y*scale2;
		var k:Number = -ball2.z;
		while(_root.getInstanceAtDepth(k) != undefined){
			k--;
		}
		b2.swapDepths(k);
		moveTo(b1._x, b1._y);
		lineTo(b2._x, b2._y);
	}
}