我正在制作一个类似于涂鸦跳跃的游戏，每次角色反弹时我都会出现一个加电MovieClip。当角色与通电相撞时，我希望它添加到实时乐谱中，然后消失。但是我希望它在删除之后重新出现，因此有一个恒定的通电流（每次角色跳跃时都会有一个）。
我遇到的问题是，一旦第一次通电被击中，它就会在视觉上消除所有未来的通电，但角色仍然能够与它们发生碰撞 - 不断增加分数而不是仅仅一次。< / p>
我做了recording，我认为这有助于解释。
这是我尝试解决的代码块：
//IF MyChicken TOUCHES CHICKEN LEG, SCORE GOES UP BY 2000
for (var c:int=0; c< 1; c++){
chickMc = powerUp[c];
if (MyChicken.hitTestObject(chickMc))
{
liveScore += 2000;
theScore.text = liveScore.toString();
tapSnd.play();
removeChild(chickMc);
}
}
如果它是这个块之外的东西，这是我的整个代码：
import flash.events.Event;
import flash.sensors.Accelerometer;
import flash.events.AccelerometerEvent;
import flash.display.MovieClip;
import flash.media.Sound;
import flash.events.MouseEvent;
var firstPass:int = 1;
var liveScore:int;
var accX:Number;
var myVect:Vector.<MovieClip> = new Vector.<MovieClip>(5,true);
var powerUp:Vector.<MovieClip> = new Vector.<MovieClip>(1, true);
var vAcceleration:Number = 0.5;
var vVelocity:Number = -20;
var middleScreen:Number = stage.height / 2;
//var newEnemy:enemy;
//var nmeMc:MovieClip;
var newChicken:chicken;
var chickMc:MovieClip;
var newBouncer:bouncer;
var tmpMc:MovieClip;
var poolSnd:poolSound = new poolSound();
var tapSnd:tapSound = new tapSound();
var btnAgain:gameOver;
stop();
// MONITOR THE ACCELEROMETER
var myAcc:Accelerometer = new Accelerometer();
myAcc.addEventListener(AccelerometerEvent.UPDATE, onAccUpdate);
function onAccUpdate(evt:AccelerometerEvent):void{
accX = evt.accelerationX;
}
//MONITOR THE ENTER_FRAME EVENT
stage.addEventListener(Event.ENTER_FRAME, onMyEnterFrame);
//INIT STAGE WITH PLATFORMS (bouncer)
if (firstPass == 1){
liveScore = 0;
accX = 0;
for (var i:int=0; i< 5; i++){
newBouncer = new bouncer;
newBouncer.x = Math.random()*stage.stageWidth;
newBouncer.y = 0 + i*stage.stageHeight/6;
myVect[i] = newBouncer;
addChild(newBouncer);
newBouncer.cacheAsBitmap = true;}
for (var c:int=0; c< 1; c++){
newChicken = new chicken;
newChicken.x = Math.random()*stage.stageWidth;
newChicken.y = 0 + c*stage.stageHeight/6;
powerUp[c] = newChicken;
addChild(newChicken);
newChicken.cacheAsBitmap = true;}
firstPass = 2;
}
function onMyEnterFrame(evt:Event):void{
//MOVE X DEPENDING ON THE ACCELEROMETER
MyChicken.x += (MyChicken.x - (MyChicken.x + accX * 20))*0.6;
//MOVE CHAR TO THE LEFT OR TO THE RIGHT
if(accX < 0) {
MyChicken.gotoAndStop(2);
}else{
MyChicken.gotoAndStop(1);
}
// VERTICAL SPEED OF MyChicken
vVelocity += vAcceleration;
if((MyChicken.y > middleScreen) && (vVelocity < 0)){
// MyChicken IS GOING UP
MyChicken.y += vVelocity;
}else{
if(vVelocity > 0){
// MyChicken IS GOING DOWN
MyChicken.y += vVelocity;
// TEST IF MyChicken HITS PLATFORM
for (var i:int=0; i< 5; i++){
tmpMc = myVect[i];
if (MyChicken.hitTestObject(tmpMc))
{
vVelocity = -20;
tapSnd.play();
}
}
//IF MyChicken TOUCHES CHICKEN LEG, SCORE GOES UP BY 2000
for (var c:int=0; c< 1; c++){
chickMc = powerUp[c];
if (MyChicken.hitTestObject(chickMc))
{
liveScore += 2000;
theScore.text = liveScore.toString();
tapSnd.play();
removeChild(chickMc);
}
}
}else{
// THE WORLD IS GOING DOWN
// WHEN MyChicken IS IN THE MIDDLE OF THE SCREEN
for (var m:int=0; m< 1; m++){
chickMc = powerUp[m];
chickMc.y -= vVelocity;
}
for (var j:int=0; j< 5; j++){
tmpMc = myVect[j];
tmpMc.y -= vVelocity;
}
liveScore += 5;
theScore.text = liveScore.toString();
}
}
//CHECK IF PLATFORMS ARE OUT OF THE SCREEN
if(myVect[0] != null){
for (var k:int=0; k< 5; k++){
tmpMc = myVect[k];
if(tmpMc.y > stage.stageHeight){
tmpMc.y = -5;
tmpMc.x = Math.random()*stage.stageWidth;
}
}
}
if(powerUp[0] != null){
for (var p:int=0; p< 1; p++){
chickMc = powerUp[p];
if(chickMc.y > stage.stageHeight){
chickMc.y = -5;
chickMc.x = Math.random()*stage.stageWidth;
}
}
}
//FAIL - IF CHICKEN FALLS OUT OF THE SCREEN
if (MyChicken.y > stage.stageHeight) {
btnAgain = new gameOver();
addChild(btnAgain);
btnAgain.x = 160;
btnAgain.y = 230;
btnAgain.theScoreFinal.text = liveScore.toString();
theScore.visible = false;
btnAgain.addEventListener(MouseEvent.MOUSE_DOWN, onPlayAgain);
//PAUSE GAME
MyChicken.y = -300;
vVelocity = 0;
vAcceleration = 0;
// PLAY FAIL SOUND
poolSnd.play();
}
// CLICKS ON THE PLAY AGAIN BUTTON
function onPlayAgain(evt:MouseEvent):void{
removeChild(btnAgain);
//NEW GAME
MyChicken.y = stage.stageHeight - 50;
MyChicken.x = stage.stageWidth / 2;
theScore.text = "0";
liveScore = 0;
vVelocity = -20;
vAcceleration = 0.5;
theScore.visible = true;
}
//STAGE BOUNDS MyChicken ON THE LEFT OR RIGHT OF THE SCREEN
if(MyChicken.x < 0) MyChicken.x = stage.stageWidth;
if(MyChicken.x > stage.stageWidth) MyChicken.x = 0;
}
答案 0 :(得分：0)
删除对象不会更改其x/y坐标或宽度/高度（边界）。 hitTestObject检查两个对象边界 - 它没有考虑对象是否实际在显示树上。因此，即使您已成功删除对象，命中测试也会继续检查它。 （因为对象仍然存在，它无法被看到）
您可以先检查是否已删除chickMc来解决此问题：
if (chickMc.parent && MyChicken.hitTestObject(chickMc))
从舞台中删除后，显示对象的parent属性将为null。
虽然不是这样，但您可能希望null对对象的引用，以便以后可以对其进行垃圾回收：
for (var c:int=0; c< 1; c++){
chickMc = powerUp[c];
if (chickMc != null && MyChicken.hitTestObject(chickMc)){
liveScore += 2000;
theScore.text = liveScore.toString();
tapSnd.play();
removeChild(chickMc);
powerUp[c] == null; //now that powerup object isn't referenced anywhere and can be garbage collected (destroyed from memory)
}
}