我在AS3中有一个简单的游戏，我正在尝试倒计时，所以当倒计时到0时游戏结束。
我在测试此代码时没有收到任何错误，但我也没有得到倒计时时钟。在项目中，我创建了一个文本框，并使用嵌入字体使其动态化。
package {
import flash.display.*;
import flash.events.*;
import flash.text.*;
import flash.utils.getTimer;
import flash.utils.Timer;
import flash.media.Sound;
import flash.media.SoundChannel;
public class MatchingGameObject10 extends MovieClip {
// game constants
private static const boardWidth:uint = 2;
private static const boardHeight:uint = 2;
private static const cardHorizontalSpacing:Number = 52;
private static const cardVerticalSpacing:Number = 52;
private static const boardOffsetX:Number = 145;
private static const boardOffsetY:Number = 70;
private static const pointsForMatch:int = 50;
private static const pointsForMiss:int = -5;
// variables
private var firstCard:Card10;
private var secondCard:Card10;
private var cardsLeft:uint;
private var gameScore:int;
private var gameStartTime:uint;
private var clockTimer:Timer;
// text fields
private var gameScoreField:TextField;
private var clock:TextField;
// timer to return cards to face-down
private var flipBackTimer:Timer;
// set up sounds
var theFirstCardSound:FirstCardSound = new FirstCardSound();
var theMissSound:MissSound = new MissSound();
var theMatchSound:MatchSound = new MatchSound();
// initialization function
public function MatchingGameObject10():void {
// make a list of card numbers
var cardlist:Array = new Array();
for(var i:uint=0;i<boardWidth*boardHeight/2;i++) {
cardlist.push(i);
cardlist.push(i);
}
// create all the cards, position them, and assign a randomcard face to each
cardsLeft = 0;
for(var x:uint=0;x<boardWidth;x++) { // horizontal
for(var y:uint=0;y<boardHeight;y++) { // vertical
var c:Card10 = new Card10(); // copy the movie clip
c.stop(); // stop on first frame
c.x = x*cardHorizontalSpacing+boardOffsetX; // set position
c.y = y*cardVerticalSpacing+boardOffsetY;
var r:uint = Math.floor(Math.random()*cardlist.length); // get a random face
c.cardface = cardlist[r]; // assign face to card
cardlist.splice(r,1); // remove face from list
c.addEventListener(MouseEvent.CLICK,clickCard); // have it listen for clicks
c.buttonMode = true;
addChild(c); // show the card
cardsLeft++;
}
}
// set up the score
gameScoreField = new TextField();
addChild(gameScoreField);
gameScore = 0;
showGameScore();
}
// set up the clock
public function CountdownClock() {
startClock();
}
public function startClock() {
clockTimer = new Timer(1000,10);
clockTimer.addEventListener(TimerEvent.TIMER, clockTick);
clockTimer.addEventListener(TimerEvent.TIMER_COMPLETE, clockEnd);
clockTimer.start();
showClock();
}
public function clockTick(event:TimerEvent) {
showClock();
}
public function showClock() {
clock.text = String(clockTimer.repeatCount - clockTimer.currentCount);
}
public function clockEnd(event:TimerEvent) {
clock.text = "!";
}
// player clicked on a card
public function clickCard(event:MouseEvent) {
var thisCard:Card10 = (event.target as Card10); // what card?
if (firstCard == null) { // first card in a pair
firstCard = thisCard; // note it
thisCard.startFlip(thisCard.cardface+2);
playSound(theFirstCardSound);
} else if (firstCard == thisCard) { // clicked first card again
firstCard.startFlip(1);
firstCard = null;
playSound(theMissSound);
} else if (secondCard == null) { // second card in a pair
secondCard = thisCard; // note it
thisCard.startFlip(thisCard.cardface+2);
// compare two cards
if (firstCard.cardface == secondCard.cardface) {
// remove a match
removeChild(firstCard);
removeChild(secondCard);
// reset selection
firstCard = null;
secondCard = null;
// add points
gameScore += pointsForMatch;
showGameScore();
playSound(theMatchSound);
// check for game over
cardsLeft -= 2; // 2 less cards
if (cardsLeft == 0) {
MovieClip(root).gameScore = gameScore;
MovieClip(root).clockTimer = clockTimer;
MovieClip(root).gotoAndStop("gameover");
}
} else {
gameScore += pointsForMiss;
showGameScore();
playSound(theMissSound);
flipBackTimer = new Timer(2000,1);
flipBackTimer.addEventListener(TimerEvent.TIMER_COMPLETE,returnCards);
flipBackTimer.start();
}
} else { // starting to pick another pair
returnCards(null);
playSound(theFirstCardSound);
// select first card in next pair
firstCard = thisCard;
firstCard.startFlip(thisCard.cardface+2);
}
}
// return cards to face-down
public function returnCards(event:TimerEvent) {
if (firstCard != null) firstCard.startFlip(1);
if (secondCard != null) secondCard.startFlip(1);
firstCard = null;
secondCard = null;
flipBackTimer.removeEventListener(TimerEvent.TIMER_COMPLETE,returnCards);
}
public function showGameScore() {
gameScoreField.text = "Score: "+String(gameScore);
}
public function playSound(soundObject:Object) {
var channel:SoundChannel = soundObject.play();
}
}
}
答案 0 :(得分：0)
在您的问题中，您说的是您已添加到舞台上的文字字段，但在这种情况下，如果您的文字字段为“private var clock:TextField;，则您当前的代码应该会出错”名为clock，否则（您的文字字段名称不是clock）您可以在showClock()函数中使用该名称，不要忘记致电CountdownClock()计时器：
public function MatchingGameObject10(): void
{
// ...
CountdownClock();
}
和
public function showClock(): void
{
your_clock_textfield.text = String(clockTimer.repeatCount - clockTimer.currentCount);
}
您也可以像使用clock一样创建gameScoreField文本字段，在这种情况下，您可以删除已经插入阶段的文本字段：
public function MatchingGameObject10(): void
{
// ...
clock = new TextField();
addChild(clock);
CountdownClock();
}
另外，不要忘记设置文本字段的位置，因为默认情况下它们将插入相同的位置（0,0）。
要动态嵌入字体（使用ActionScript），请查看my answer of this question。
希望可以提供帮助。