[iNils]

var _state:int = 1;
var minX:int = 0;
var maxX:int = 10;
function test ():void  {
	x+=_state;
	if (x < minX) {
		x = minX;
		_state *=-1;
		x += _state;
	} else if (x > maxX) {
		x = maxX;
		_state *=-1;
		x += _state;
	}
	trace (x, _state)
}
for (var i:int = 0; i< 40;i++) {
	test();
}