我有一个应用程序，我正在使用AS3为iOS和Android开发。我目前在这个项目中遇到了几个性能问题。这是我的第一款应用和游戏。因此，非常感谢任何类型的反馈或见解。我的游戏是一个越野车自行车前轮游戏。它允许用户按下一个按钮（gasPress）向上转动，另一个按钮（制动器）向下转动。按下“gasPress”按钮后，布尔“holdGas”设置为true。在我的“gameLoop”（Enter_Frame事件）中，自行车向上旋转，IF“holdGas”等于true。按下制动器的代码是相同的，除了它旋转自行车。我的建筑物在屏幕上滑动，造成自行车移动的错觉。构建影片剪辑缓存为位图。我使用相同构建影片剪辑的两个实例。一旦第一个剪辑从舞台上滑下，它就会被放在另一个剪辑的后面。在一个回收的机制lol。我遇到的问题是，当我按下“gasPress”按钮时，它在前轮/向上旋转之前滞后。当它滞后时，在后面移动的建筑物会跳过。它每次都会发生。因此，如果你继续点击gasPress（这是游戏玩法的一部分），屏幕上的对象会继续跳跃。它使游戏无法播放。我已经通过完全移除代码来测试按钮，以向上/向下移动自行车，游戏仍然会跳过。当气体被按下并且自行车向上旋转时，我注意到更多的跳跃或滞后。我目前的帧速率设置为32，它在24时也是如此。
public function TheGame() {
//Connect to tapjoy's ad network
//tjClass = new TapJoyClass();
//stage.scaleMode = StageScaleMode.NO_SCALE;
//stage.align = StageAlign.TOP_LEFT;
//Give game focus so the keyboard keys will work on computer
stage.focus = this;
globalStage = this.stage;
//Checks if ScoreData and Bike data shared object has been created, if not it creates
scoreInfo = SharedObject.getLocal ( "ScoreData" );
bikeInfo = SharedObject.getLocal ( "BikeData" );
//scoreInfo.clear ();
//bikeInfo.clear ();
mostSprocketsCollected = scoreInfo.data.mostSprocketsCollected;
//Handling background
background1 = new Background;
background2 = new Background;
addChild ( background1 );
addChild ( background2 );
background1.cacheAsBitmap = true;
background2.cacheAsBitmap = true;
background1.mouseChildren = false;
background1.mouseEnabled = false;
background2.mouseChildren = false;
background2.mouseEnabled = false;
background1.x = background1.width;
background2.x = background1.x + background2.width;
//Handling buildings
building1 = new Buildings;
building2 = new Buildings;
addChild ( building1 );
addChild ( building2 );
building1.cacheAsBitmap = true;
building2.cacheAsBitmap = true;
building1.mouseChildren = false;
building1.mouseEnabled = false;
building2.mouseChildren = false;
building2.mouseEnabled = false;
building1.x = building1.width;
building2.x = building1.x + building2.width;
//Choose which bike will be used
if( bikeInfo.data.EquippedBike == undefined ){
//Start off with original bike
whichBike = "OriginalDirtBike";
bikeInfo.data.BikeColor = "OriginalDirtBike";
}else{
whichBike = bikeInfo.data.EquippedBike;
}
if( whichBike == "Banshee" ){
//Add far wheels first
wheelClip2 = new Banshee_Far_WheelClip;
addChild ( wheelClip2 );
//wheelClip2. = 208.30;
wheelClip2.y = 350;
//Add Banshee
bitmapBike = new Banshee_Bitmap ();
bitmapBike.gotoAndStop ( bikeInfo.data.BikeColor );
addChild ( bitmapBike );
bitmapBike.y = 399.80;
bitmapBike.x = 0;
//Add frontWheels
wheelClip = new Banshee_WheelClip ();
wheelClip.backTire.frontFace.gotoAndStop ( bikeInfo.data.BikeColor );
wheelClip.frontTire.frontFace.gotoAndStop ( bikeInfo.data.BikeColor );
addChild ( wheelClip );
wheelClip.x = 187.70;
wheelClip.y = 399;
}else if( whichBike == "SupermotoDRZ400" ){
//Add Wheels
wheelClip = new WheelClip ();
wheelClip.backTire.gotoAndStop ( bikeInfo.data.BikeColor );
wheelClip.frontTire.gotoAndStop ( bikeInfo.data.BikeColor );
addChild ( wheelClip );
wheelClip.x = 0;
wheelClip.y = 409.45;
//Add bike
bitmapBike = new SuperMoto_Bitmap ();
bitmapBike.gotoAndStop ( bikeInfo.data.BikeColor );
addChild ( bitmapBike );
bitmapBike.y = 399.80;
}else if( whichBike == "OriginalDirtBike" ){
//Add wheels
wheelClip = new OriginalBike_WheelClip ();
wheelClip.backTire.gotoAndStop ( bikeInfo.data.BikeColor );
wheelClip.frontTire.gotoAndStop ( bikeInfo.data.BikeColor );
addChild ( wheelClip );
wheelClip.x = 0;
wheelClip.y = 405;
//Add Bike
bitmapBike = new OriginalBike_Bitmap ();
addChild ( bitmapBike );
bitmapBike.gotoAndStop ( bikeInfo.data.BikeColor );
bitmapBike.y = 399.80;
//Add rider
//rider = new Rider_Original_bitmap ();
//addChild ( rider );
//rider.y = 353.1
}
//bitmapBike.mouseChildren = false;
//bitmapBike.mouseEnabled = false;
//bitmapBike.cacheAsBitmapMatrix = bitmapBike.transform.concatenatedMatrix;
//bitmapBike.cacheAsBitmap = true;
//
trace ( "bitmap bike : " + getSize ( bitmapBike) );
//rider.cacheAsBitmapMatrix = rider.transform.concatenatedMatrix;
//rider.cacheAsBitmap = true;
rider.mouseChildren = false;
rider.mouseEnabled = false;
gasPress.addEventListener ( MouseEvent.MOUSE_DOWN, hitGas );
gasPress.addEventListener ( MouseEvent.MOUSE_UP, releaseGas );
brake.addEventListener ( MouseEvent.MOUSE_DOWN, hitBrake );
brake.addEventListener ( MouseEvent.MOUSE_UP, releaseBrake );
stage.addEventListener ( KeyboardEvent.KEY_DOWN, useKeyboard);
stage.addEventListener ( KeyboardEvent.KEY_UP, stopUseKeyboard);
addEventListener ( Event.ADDED_TO_STAGE, init );
ScoreBoardFormat = new TextFormat ();
ScoreBoardFormat.bold = true;
sprocketVector = new Vector.< MovieClip > ();
sprocketPool = new SprocketPool( Sprocket, pool_SprocketAmount );
stage.addEventListener ( Event.RESIZE, resizeObjects );
stage.dispatchEvent( new Event( Event.RESIZE ) );
if( Accelerometer.isSupported ){
//on mobile device
}else{
//on desktop
gravity = 15; // low values for phone
dy = 60; // low values for phone
backgroundDx = -160;
buildingDx = -300;
dx = 300; // speed and direction
}
//start bike off in a wheelie
bitmapBike.rotation = -45;
rider.rotation = -45;
wheelClip.x = -15;
rider.x = bitmapBike.x;
//Add the first sprocket
addSprocket();
}
//Following Functions are Gas and Brake related
public function hitGas (e:MouseEvent){
e.stopImmediatePropagation();
holdGas = true;
pressedBrake = "no";
}
public function hitBrake (e:MouseEvent){
e.stopImmediatePropagation();
pressedBrake = "yes";
}
public function releaseGas (e:MouseEvent){
e.stopImmediatePropagation();
holdGas = false;
}
public function releaseBrake (e:MouseEvent){
e.stopImmediatePropagation();
pressedBrake = "no";
}
//Game Loop
public function gameLoop ( e:Event ):void{
e.stopImmediatePropagation();
var timePassed:int = getTimer()-lastTime;
lastTime += timePassed;
if ( whichBike == "SupermotoDRZ400" ){
//Keep wheels in position with the bike
wheelClip.rotation = bitmapBike.rotation;
wheelClip.x = bitmapBike.x;
//make tires spin
wheelClip.frontTire.rotation += 75*timePassed/1000;
wheelClip.backTire.rotation += 75*timePassed/1000;
rider.rotation = bitmapBike.rotation - 1;
rider.x = bitmapBike.x + 25;
}else if ( whichBike == "OriginalDirtBike" ){
//Keep wheels in position with the bike
wheelClip.rotation = bitmapBike.rotation - 1.5;
wheelClip.rotation = bitmapBike.rotation;
wheelClip.x = bitmapBike.x + 16.5;
//make tires spin
wheelClip.frontTire.rotation += 75*timePassed/1000;
wheelClip.backTire.rotation += 75*timePassed/1000;
//rider
rider.x = bitmapBike.x;
rider.rotation = bitmapBike.rotation;
}else if ( whichBike == "Banshee" ){
rider.rotation = bitmapBike.rotation;
rider.x = bitmapBike.x;
//First wheels
wheelClip.x = bitmapBike.x;
wheelClip.rotation = bitmapBike.rotation;
wheelClip.frontTire.frontFace.rotation += 75*timePassed/1000;
wheelClip.frontTire.backFace.rotation += 75*timePassed/1000;
wheelClip.backTire.frontFace.rotation += 75*timePassed/1000;
wheelClip.backTire.backFace.rotation += 75*timePassed/1000;
//second wheels
wheelClip2.x = bitmapBike.x;
wheelClip2.rotation = bitmapBike.rotation;
wheelClip2.farBackTire.frontFace.rotation += 75*timePassed/1000;
wheelClip2.farFrontTire.frontFace.rotation += 75*timePassed/1000;
wheelClip2.farFrontTire.backFace.rotation += 75*timePassed/1000;
}
if( popUp != null ){
this.setChildIndex ( popUp, this.numChildren - 2 );
}
this.setChildIndex ( rider, this.numChildren - 1 );
//Stores the bikes current rotation point
var currRotation = bitmapBike.rotation;
//make shadow follow bike
var bikeX:int = bitmapBike.x;
newShadow.x = bikeX + 150; //109.8;
//ANITMATING THE DRIVER!!!!
if( currRotation <= -11 ){ //This should occur at a lower
rider.gotoAndPlay ( "sitDown" );
sitDown = true;
newShadow.gotoAndStop ( "fullShadow" );
}
if( currRotation <= -15 ){
newShadow.gotoAndStop( "three4thShadow" );
leanBack = true;
}
//just change shadow with this one
if( currRotation <= -25 ){
newShadow.gotoAndStop ( "midShadow" );
}
if( currRotation <= -30 ){
rider.gotoAndPlay ( "LeanBack" );
leanBack = true;
newShadow.gotoAndStop ( "smallShadow" );
}
if( currRotation <= -34 ){ //Highest
rider.gotoAndPlay ( "LeanBack2" );
leanBack = true;
newShadow.gotoAndStop ( "smallestShadow" );
}
if( currRotation <= -35 ){ //Highest
rider.gotoAndPlay ( "LeanBack2" );
leanBack = true;
newShadow.gotoAndStop ( "allTheWayBack" );
}
//if player holds or hit the brake
if( pressedBrake == "yes" ) { //for some reason the opposite is working right now
var currBikePosition:int;
currBikePosition = bitmapBike.rotation;
bitmapBike.rotation += 2;
currBikePosition = 0;
}
//gravity pulling bike down
bitmapBike.rotation += gravity*timePassed/1000;
bitmapBike.rotation += gravity*timePassed/1000;
//if player holding gas, do wheeliez
if( holdGas == true ){
//Make bike wheelie
bitmapBike.rotation -= dy*timePassed/1000;
rider.rotation -= dy*timePassed/1000;
}
//Move Bike to center, then move buildings
if( bitmapBike.x <=187 ){
//move bike
bitmapBike.x += dx*timePassed/1000;
}else{
//move buildings and background
building1.x += buildingDx*timePassed/1000;
building2.x += buildingDx*timePassed/1000;
//buildings
if( building1.x <= -25 ){
building1.x = building2.x + building1.width;
}else if( building2.x <= -25 ){
building2.x = building1.x + building2.width;
}
background1.x += backgroundDx*timePassed/1000;
background2.x += backgroundDx*timePassed/1000;
//background
if( background1.x <=0 ){
background1.x = background2.x + background1.width;
}else if ( background2.x <=0 ){
background2.x = background1.x + background2.width;
}
}
答案 0 :(得分：0)
你是如何处理＆＃34;背景图像＆＃34;？图像有多大？
最有可能的原因是，当您的自行车移动时，您必须重新绘制所有内容，因为它无法再重复使用缓存位图的旧值。而且由于你的背景很大，这会导致你注意到的性能下降。
首先，您应该在＆＃34;巨大的移动背景上定义 scrollRect ＆＃34;而不是仅仅绘制整个背景。这导致仅显示图像的一部分被发送到GPU。例如bg.scrollRect = new Rectangle(offsetX,offsetY, 1280, 1024);
阅读http://gskinner.com/blog/archives/2006/11/understanding_d.html，了解scrollRect的简短介绍。
CacheAsBitmap可能没有按照您的意愿执行操作，如果您要更改每个帧上的显示对象的外观，您实际上会丢失性能，因为您首先必须绘制项目，然后将它们放入位图，并且然后绘制该位图。然后在下一帧，你将最终重做完全相同的事情（因为旧的缓存位图不再有效）。当复杂的矢量形状对于一定数量的帧保持相同时，cacheAsBitmap非常有用。
有关更全面的优化指南，请阅读以下两个大量的pdf文件： http://help.adobe.com/en_US/as3/mobile/flashplatform_optimizing_content.pdf http://help.adobe.com/en_US/as3/dev/as3_devguide.pdf
答案 1 :(得分：0)
在“发布”设置中，将“硬件加速”设置为GPU，将从处理器中取出