actionscript-3 - AS3 Math.round 问题

Question

我需要将“速度”的变量值作为一个整数出现，这样它就可以影响我的“BG”电影剪辑的滑动位置。使用此代码（并尝试许多其他变体）后，“round”变量仅作为 0 或 1 出现。（此代码都在ENTER FRAME函数中。）

var speed:Number = (xspeed + yspeed) / 100;
var round:Number = Math.round(speed);

BG.gotoAndStop(speed);
texta.text = ""+(round);

Answer 1

Well, you're diving by 100 so there's a high likelyhood that your number is actually between 0 and 1 (if xspeed + yspeed is ever less than 100, speed will be less than 1 after dividing by 100).

What do you get when you trace(speed)?