我编写这段代码是为了制作一个基本的游戏。完整的html是：
<!DOCTYPE>
<html>
<head>
<title>The dodge game</title>
<link rel="stylesheet" type="text/css" href="normalize.css">
<link rel="stylesheet" type="text/css" href="index.css">
<script src="jquery.js"></script>
<script src="script.js"></script>
</head>
<body>
<div id="play-ground">
<div id="character"></div>
<div id="chaser"></div>
</div>
<button id="control-up" class="button">UP</button>
<button id="control-down" class="button">DOWN</button>
<button id="control-right" class="button">RIGHT</button>
<button id="control-left" class="button">LEFT</button>
</body>
</html>
剧本 ：
$(document).ready (
function() {
var characterPositionLeft = 0;
var characterPositionTop = 0;
var chaserPositionLeft = 810;
var chaserPositionTop = 630;
var speed = 30;
var dspeed = 60;
var apoint = 5;
var testPositionLeft = function() {
if (chaserPositionLeft > characterPositionLeft) {
chaserPositionLeft -= 30;
var caLeft = chaserPositionLeft + 'px';
$('#chaser').css('margin-left', caLeft);
leftRight();
topBottom();
testEndGame();
console.log(chaserPositionLeft);
} else if (chaserPositionLeft < characterPositionLeft) {
chaserPositionLeft += 30;
var caLeft = chaserPositionLeft + 'px';
$('#chaser').css('margin-left', caLeft);
leftRight();
topBottom();
testEndGame();
console.log(characterPositionLeft);
}
}
var testPositionTop = function() {
if (chaserPositionTop > characterPositionTop) {
chaserPositionTop -= 30;
var caTop = chaserPositionTop + 'px';
$('#chaser').css('margin-top', caTop);
leftRight();
topBottom();
testEndGame();
console.log(chaserPositionTop);
} else if (chaserPositionTop < characterPositionTop) {
chaserPositionTop += 30;
var caTop = chaserPositionTop + 'px';
$('#chaser').css('margin-top', caTop);
leftRight();
topBottom();
testEndGame();
console.log(chaserPositionTop);
}
}
// left and right
var CacLeftPlus = chaserPositionLeft + 30;
var CacLeftMinus = chaserPositionLeft - 30;
var LeftCaught = false;
// top and bottom
var CacTopPlus = chaserPositionTop + 30;
var CacTopMinus = chaserPositionTop - 30;
var TopCaught = false;
// up
$('#control-up').click (
function() {
testPositionTop();
if(characterPositionTop > 0) {
characterPositionTop -= speed;
var cTop = characterPositionTop + 'px';
console.log(characterPositionTop);
$('#character').css('margin-top', cTop);
leftRight();
topBottom();
testEndGame();
} else {
console.log('warning: [reached sky limit]');
}
}
)
// down
$('#control-down').click (
function() {
testPositionTop();
if(characterPositionTop < 630) {
characterPositionTop += speed;
var cTop = characterPositionTop + 'px';
console.log(characterPositionTop);
$('#character').css('margin-top', cTop);
leftRight();
topBottom();
testEndGame();
} else {
console.log('warning: [reached earth limit]');
}
}
)
// right
$('#control-right').click (
function() {
testPositionLeft();
if(characterPositionLeft < 810) {
characterPositionLeft += speed;
var cTop = characterPositionLeft + 'px';
console.log(characterPositionLeft);
$('#character').css('margin-left', cTop);
leftRight();
topBottom();
testEndGame();
} else {
console.log('warning: [reached right limit]');
}
}
)
// left
$('#control-left').click (
function() {
testPositionLeft();
if(characterPositionLeft > 0) {
characterPositionLeft -= speed;
var cTop = characterPositionLeft + 'px';
console.log(characterPositionLeft);
$('#character').css('margin-left', cTop);
leftRight();
topBottom();
testEndGame();
} else {
console.log('warning: [reached left limit]');
}
}
)
var leftRight = function() {
if(characterPositionLeft == CacLeftPlus || characterPositionLeft == CacLeftMinus) {
LeftCaught = true;
console.log('worked?');
} else {
}
}
var topBottom = function() {
if(characterPositionTop == CacTopPlus || characterPositionLeft == CacTopMinus) {
TopCaught = true;
console.log('worked?');
} else {
}
}
var testEndGame = function () {
if (LeftCaught == true && TopCaught == true) {
console.log('game over');
alert('game over');
} else {
}
}
}
)
一切正常，直到函数 leftRight、upBottom 和 testEndGame。他们只有在控制台记录 600 和 630 时才能工作。谁能告诉我这段代码的缺陷和解决方法？这是完整的代码：http: //jsfiddle.net/StK7r/1/