AS3之麦克风接口【flash.media.Microphone 类】

2010

5-25

发表于：ActionScript 3.0
才 1 个人发表意见

首先来看一个演示，如果你装了麦克风，那么请对着你的麦克风大声的啊一下，下面的flash演示就会动起来

点击播放/隐藏媒体

uploads/flash/SoundGame.swf

随着你声音的大小不一，他每次跳动的高度和速度也不一样

下面是源代码，不过是接口展示而已，所以是一个很简单的例子，也是很容易看懂的

package {
  import flash.display.Shape;
  import flash.display.Sprite;
  import flash.events.ActivityEvent;
  import flash.events.Event;
  import flash.media.Microphone;

  public class SoundGame extends Sprite
  {
    private var main:Sprite;
    private var mic:Microphone;

    private var minHigh:int = 0;
    private var intervalValue:int = 0;

    public function SoundGame()
    {
      init();
    }

    //初始化
    private function init():void{
      initMic();
      createSky();
      createLand();
      createMain();
    }

    //初始化麦克风
    private function initMic():void{
      mic = Microphone.getMicrophone();
      mic.setSilenceLevel(30,0);
      mic.setLoopBack();

      mic.addEventListener(ActivityEvent.ACTIVITY,micActivityHandle);
    }

    //创建操作
    private function createMain():void{
      var mainContainer:Sprite = new Sprite;
      main = new Sprite;
      main.graphics.beginFill(0xffffff);
      main.graphics.drawCircle(-2,-4,4);
      mainContainer.x = 100;
      mainContainer.y = 250;
      mainContainer.addChild(main);
      addChild(mainContainer);

      main.addEventListener(Event.ENTER_FRAME,frameHandle);
    }

    //创建天
    private function createSky():void{
      var shape:Shape = new Shape;
      shape.graphics.beginFill(0x6699cc,1);
      shape.graphics.drawRect(0,0,400,250);
      addChild(shape);
    }

    //创建陆地
    private function createLand():void{
      var shape:Shape = new Shape;
      shape.graphics.beginFill(0x002222,1);
      shape.graphics.drawRect(0,250,400,150);
      addChild(shape);
    }

    //麦克风活跃处理
    private function micActivityHandle(e:ActivityEvent):void{
      if(e.activating && intervalValue == 0){
        intervalValue = mic.activityLevel / 5;
      }
    }

    //持续处理
    private function frameHandle(e:Event):void{
      if(intervalValue == 0) return;
      main.y -= intervalValue;
      intervalValue --;
      if(intervalValue == 0) intervalValue -= 1;

      //落地
      var min:int = - minHigh;
      if(min < main.y){
        main.y = min;
        intervalValue = 0;
      }
    }
  }
}