[英]Pick random Element of an Array Actionscript 3
I have an array of movieclips and i want to put them on stage. 我有一系列的动画片段,我想把它们放在舞台上。 so they have to be unique and randomly chosen.
所以他们必须是独一无二的,随机选择。
how can I do that? 我怎样才能做到这一点?
thank you for your time 感谢您的时间
You can get a random number using Math.random()
This will return a number between 0 and 1. 您可以使用
Math.random()
获取一个随机数。这将返回0到1之间的数字。
So, for getting a random element of the array, use this: 因此,要获取数组的随机元素,请使用:
function getRandomElementOf(array:Array):Object {
var idx:int=Math.floor(Math.random() * array.length);
return array[idx];
}
If you have an Array
already, you should be able to define a random sort, then you can add them to the stage as needed. 如果您已经有一个
Array
,您应该能够定义一个随机排序,然后您可以根据需要将它们添加到舞台。
//get your array as needed...
var myArray:Array = getYourMovieClipsArray();
//randomize it by "sorting" it...
myArray.sort(randomSort);
//do something with them...
for(var i:int=0;i<myArray.length;i++){
addChild(myArray[i]);
}
//sorting function
public function randomSort(objA:Object, objB:Object):int{
return Math.round(Math.random() * 2) - 1;
}
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