看来我的声音不同步，我播放动画片段的时间越长，它就会越走越远。它没什么太复杂的，只是一些基本的射击声，每当我击中空格键时都会发出声音。我的代码如下：
package com.objects{
import flash.display.MovieClip;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.net.URLRequest;
import flash.events.Event;
public class Avatar extends gameObject implements IKiller{
public var targets:Array;
public var delay:Number = 3000;
public var weapon:Number = 1;
private var fireSound:Sound;
private var fireSound2:Sound;
private var systems:Array;
private var ext:Number = -1;
private var channelTracer:SoundChannel;
private var channelCount:Number = 0;
public function Avatar():void
{
systems = new Array();
channelTracer = new SoundChannel();
var soundUrl = new URLRequest("com/images/mashingun_darkt.mp3");
fireSound = new Sound();
fireSound.load(soundUrl);
var soundUrl = new URLRequest("com/images/mashingun_light.mp3");
fireSound2 = new Sound();
fireSound2.load(soundUrl);
rotation = -90;
lastTime = getTime();
targets = new Array();
}
private function soundFinished(e:Event):void {
channelCount--;
trace(channelCount);
}
public function get Systems():Array
{
return systems;
}
override public function Attack(dir:Number = -40):void
{
switch(weapon){
case 1:
var bullet1:Bullet = new Bullet();
bullet1.wielder = this;
bullet1.x = x + 35;
bullet1.y = y + 30;
bullet1.bulletDir = rotation;
eApi.addGameChild(bullet1);
var bullet2:Bullet = new Bullet();
bullet2.bulletDir = rotation;
bullet2.wielder = this;
bullet2.x = x - 35;
bullet2.y = y + 30;
eApi.addGameChild(bullet2);
var rand = Math.ceil(Math.random() * 100);
if (rand < 50) {
channelTracer = fireSound.play();
//RndSound = RndSound+50;
} else {
channelTracer = fireSound2.play();
}
channelTracer.addEventListener(Event.SOUND_COMPLETE, soundFinished);
channelCount++;
trace(channelCount);
break;
case 2:
if((getTime() - lastTime) > delay)
{
var missle = new Missile();
missle.shootOut *= ext;
ext *= -1;
missle.x = x;
missle.y = y;
trace(ext);
missle.wielder = this;
eApi.addGameChildAt((eApi.numChildren - 2),missle);
lastTime = getTime();
}
break;
case 3:
var bullet1:Bullet = new Bullet();
bullet1.wielder = this;
bullet1.x = x + 35;
bullet1.y = y + 30;
bullet1.bulletDir = -80;
eApi.addGameChild(bullet1);
var laser = new StingerLaser();
laser.laserDir = -90;
laser.wielder.push(this);
laser.x = x + 20;
laser.y = y + -3;
eApi.addGameChild(laser);
var laser2 = new StingerLaser();
laser2.laserDir = -90;
laser2.wielder.push(this);
laser2.x = x + -20;
laser2.y = y + -3;
eApi.addGameChild(laser2);
var bullet2:Bullet = new Bullet();
bullet2.bulletDir = -100;
bullet2.wielder = this;
bullet2.x = x - 35;
bullet2.y = y + 30;
eApi.addGameChild(bullet2);
break;
case 4:
if((getTime() - lastTime) > delay)
{
var missle1 = new Missile();
missle1.shootOut = 2;
missle1.x = x;
missle1.y = y;
missle1.wielder = this;
eApi.addGameChildAt((eApi.numChildren - 2),missle1);
var missle2 = new Missile();
missle2.shootOut = -2;
missle2.x = x;
missle2.y = y;
missle2.wielder = this;
eApi.addGameChildAt((eApi.numChildren - 2),missle2);
lastTime = getTime();
}
break;
case 5:
if((getTime() - lastTime) > delay)
{
var side:Number = 1;
for(var i = 0; i < 20; i+=2)
{
var missle1 = new Missile();
missle1.shootOut = (i+2) * side;
side *= -1;
missle1.straightShot = true;
missle1.x = x;
missle1.y = y;
missle1.wielder = this;
eApi.addGameChildAt((eApi.numChildren - 2),missle1);
}
lastTime = getTime();
}
break;
default:
}
}
public function Hit(dmg:Number = .01):void {
if(health > 0)
health -= dmg;
if(health < 0)
health = 0,trace("dead");
}
override public function updateObject():void
{
}
}
}
从另一个处理所有键盘控件的类调用Attack（）方法。当它被调用时，声音然后播放。 firesound和firesound2几乎相同。 firesound2听起来有点偏离，使声音听起来更逼真。起初声音听起来不错，不是很好。但随着时间的推移它会变得很糟糕。不确定这是否是一个已知问题。但如果有人有任何想法，请告诉我。谢谢！
我做了一个新的.fla项目。并且我自己将下面的课程附加到它上面。所以以下是整个.fla项目中唯一的代码，问题仍然存在。我按空格键，声音开始一天晚了。
package {
import flash.display.MovieClip;
import flash.events.*;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.net.URLRequest;
public class test extends MovieClip
{
private var fireSound:Sound;
private var fireSound2:Sound;
private var aKeyPress:Array;
public function test():void
{
aKeyPress = new Array();
var soundUrl = new URLRequest("com/images/mashingun_darkt.mp3");
fireSound = new Sound();
fireSound.load(soundUrl);
var soundUrl = new URLRequest("com/images/mashingun_light.mp3");
fireSound2 = new Sound();
fireSound2.load(soundUrl);
addEventListener(Event.ENTER_FRAME, loop);
stage.addEventListener(KeyboardEvent.KEY_DOWN,keyDownListener);
stage.addEventListener(KeyboardEvent.KEY_UP,keyUpListener);
}
private function keyDownListener(e:KeyboardEvent) {
//trace("down e.keyCode=" + e.keyCode);
aKeyPress[e.keyCode]=true;
}
private function keyUpListener(e:KeyboardEvent) {
//trace("up e.keyCode=" + e.keyCode);
aKeyPress[e.keyCode]=false;
}
public function loop(e:Event):void
{
if (aKeyPress[32]){//Right
var rand = Math.ceil(Math.random() * 100);
if (rand < 50) {
fireSound.play();
//RndSound = RndSound+50;
} else {
fireSound2.play();
}
}
}
}
}
答案 0 :(得分：1)
这可能与播放的并发声音数量有关吗？
每次调用Sound.play（）都会返回一个新的SoundChannel对象（一次只能有32个这样的对象）。您可以像这样监视频道的使用方式：
private var channelTracer:SoundChannel;
private var channelCount:number = 0;
//...
private function soundFinished(e:Event):void {
channelCount--;
trace(channelCount);
}
//...
var rand = Math.random() * 100;
if (rand < 50) {
channelTracer = fireSound.play();
} else {
channelTracer = fireSound2.play();
}
channelTracer.addEventListener(Event.SOUND_COMPLETE, soundFinished);
channelCount++;
trace(channelCount);
这可能有助于您查明问题。
编辑：我更改了上面的代码以保持同时播放的声音的运行次数（我希望 - 抱歉，你必须为我测试它！）答案 1 :(得分：1)
我使用此测试代码和我自己的声音文件测试了构建，并且无法遇到声音滞后问题。它可能是你的声音文件，虽然没有我知道的问题会导致调用Sound.play（）开始滞后。
我以前测试的声音文件很短（马里奥火球和跳跃声音），并且无法使用超过4个并发的SoundChannel。没有延迟问题。
使用更长的声音文件，我能够将SoundChannel的数量推到32，此时通道跟踪器代码开始抛出空引用错误（正如预期的那样，因为Sound.play（）无法返回更多的SoundChannels），它听起来很糟糕，但一旦声音完成，计数就会减少到零。经过两分钟的惩罚我的耳机和声卡，我仍然没有遇到延迟。
我建议在整个代码中插入对getTimer（）的调用，以查看它是否是性能瓶颈（即Flash Player实际上没有快速响应事件）或声音延迟问题。此外，您可能需要尝试不同的声音文件，以查看问题是否仍然存在。