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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>task 3.4</title>
<style type="text/css">
#boxs{display: inline-block; width: 600px; }
.top{margin-left: 51px; height: 51px;}
.top div{float: left; width: 51px; text-align: center; font: 20px/51px SimSun;}
.side{float: left; width: 50px;}
.side div{height: 51px; text-align: center; font: 20px/51px SimSun;}
#blocks{position: relative; clear: left; display: inline-block; width: 509px; height: 509px; border: solid 2px #333333;}
.clearfix:after{content: '.'; clear: both; display: block; height: 0; overflow: hidden; visibility: hidden;}
span{display: block; float: left; margin: 0; padding: 0; width: 50px; height: 50px; border-left:solid 1px #cccccc; border-top:solid 1px #cccccc;}
div span:first-child{border-left: none;}
#div1 span{border-top:none;}
.bottom{margin-left: 51px; margin-top: 20px;}
#block{position: absolute; left: 0; top: 0; transition:1s; width: 50px; height: 50px; background: url(http://images.yyshhhh.com/3.4block.png); background-repeat: no-repeat;}
#instr{display: inline-block; font: 14px/28px Microsoft Yahei;}
}
</style>
</head>
<body>
<div id="boxs">
<div class="top">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
<div>6</div>
<div>7</div>
<div>8</div>
<div>9</div>
<div>10</div>
</div>
<div class="side">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
<div>6</div>
<div>7</div>
<div>8</div>
<div>9</div>
<div>10</div>
</div>
<div id="blocks">
<div class="clearfix" id="div1">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<div class="clearfix">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<div class="clearfix">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<div class="clearfix">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<div class="clearfix">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<div class="clearfix">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<div class="clearfix">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<div class="clearfix">
<span></span>
<span></span>
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</div>
<div class="clearfix">
<span></span>
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</div>
<div class="clearfix">
<span></span>
<span></span>
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<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<div id="block"></div>
</div>
<div class="bottom">
<input type="" name="" id="order">
<input type="button" name="" value="执行" id="btn">
</div>
</div>
<div id="instr">
<pre>
说明：
小方块的蓝色部分是小方块的前进方向
命令：
go 向前进方向前进一格
turn lef 逆时针旋转九十度
turn rig 顺时针旋转九十度
turn bac 旋转一百八十度
tra lef 向左移动一格
move lef 前进方向改为向左并向左前进一格
tra rig 向右移动一格
move rig 前进方向改为向右并向右前进一格
tra top 向上移动一格
move top 前进方向改为向上并向上前进一格
tra bot 向下移动一格
move bot 前进方向改为向下并向下前进一格
</pre>
</div>
<script type="text/javascript">
var order = document.getElementById('order');
var btn = document.getElementById('btn');
var obj = {
x: 0,
y: 0,
dir: 0
};
var blocks = document.getElementById('blocks');
var block = document.getElementById('block');
function shine( obj ){
block.style.left = obj.x*51 + 'px';
block.style.top = obj.y*51 + 'px';
var deg = ((obj.dir%4 == 0 && 0) || (obj.dir%4 == 1 && -90) || (obj.dir%4 == 2 && 180) || (obj.dir%4 == 3 && 90)) + 'deg';
block.style.transform = 'rotate(' + deg + ')';
}
//TURN lEFT
function turnLef (obj) {
obj.dir = obj.dir + 1;
return obj;
}
//TURN RIGHT
function turnRig (obj) {
obj.dir = obj.dir + 3;
return obj;
}
//TURN BACK
function turnBac (obj) {
obj.dir = obj.dir + 2;
return obj;
}
//GO
function go (obj){
var dirr = obj.dir % 4;
switch(dirr){
case 0:
if (obj.y > 0){
--obj.y;
}
else {
alert('超过边界')
}
break;
case 1:
if (obj.x > 0){
--obj.x;
}
else {
alert('超过边界')
}
break;
case 2:
if (obj.y < 9){
++obj.y;
}
else {
alert('超过边界')
}
break;
case 3:
if (obj.x < 9){
++obj.x;
}
else {
alert('超过边界')
}
break;
}
return obj;
}
//tra lef
function traLef (obj){
if (obj.x > 0 ){
--obj.x;
}
else {
alert('超过边界')
}
return obj;
}
//tra top
function traTop (obj){
if (obj.y > 0 ){
--obj.y;
}
else {
alert('超过边界')
}
return obj;
}
//tra rig
function traRig (obj){
if (obj.x < 9 ){
++ obj.x;
}
else {
alert('超过边界')
}
return obj;
}
//tra bot
function traBot (obj){
if (obj.y < 9 ){
++obj.y;
}
else {
alert('超过边界')
}
return obj;
}
//mov lef
function movLef (obj){
block.style.transform = 'rotate(-90deg)';
if (obj.x > 0 ){
--obj.x;
}
else {
alert('超过边界')
}
block.style.left = obj.x*51 + 'px';
block.style.top = obj.y*51 + 'px';
obj.dir = 1;
return obj;
}
//mov top
function movTop (obj){
block.style.transform = 'rotate(0deg)';
if (obj.y > 0 ){
--obj.y;
}
else {
alert('超过边界')
}
block.style.left = obj.x*51 + 'px';
block.style.top = obj.y*51 + 'px';
obj.dir = 0;
return obj;
}
//mov rig
function movRig (obj){
block.style.transform = 'rotate(90deg)';
if (obj.x < 9 ){
++ obj.x;
}
else {
alert('超过边界')
}
block.style.left = obj.x*51 + 'px';
block.style.top = obj.y*51 + 'px';
obj.dir = 3;
return obj;
}
//mov bot
function movBot (obj){
block.style.transform = 'rotate(180deg)';
if (obj.y < 9 ){
++obj.y;
}
else {
alert('超过边界')
}
block.style.left = obj.x*51 + 'px';
block.style.top = obj.y*51 + 'px';
obj.dir = 2;
return obj;
}
btn.onclick = function(){
if (order.value.toLowerCase() == "go"){
go(obj);
shine(obj);
}
else if (order.value.toLowerCase() == 'turn lef'){
turnLef (obj);
shine(obj);
}
else if (order.value.toLowerCase() == 'turn rig'){
turnRig (obj);
shine(obj);
}
else if (order.value.toLowerCase() == 'turn bac'){
turnBac (obj);
shine(obj);
}
else if(order.value.toLowerCase() == 'tra lef'){
traLef(obj);
shine(obj);
}
else if(order.value.toLowerCase() == 'mov lef'){
movLef(obj);
}
else if(order.value.toLowerCase() == 'tra top'){
traTop(obj);
shine(obj);
}
else if(order.value.toLowerCase() == 'mov top'){
movTop(obj);
}
else if(order.value.toLowerCase() == 'tra rig'){
traRig(obj);
shine(obj);
}
else if(order.value.toLowerCase() == 'mov rig'){
movRig(obj);
}
else if(order.value.toLowerCase() == 'tra bot'){
traBot(obj);
shine(obj);
}
else if(order.value.toLowerCase() == 'mov bot'){
movBot(obj);
}
else {
alert('请输入正确的指令');
}
}
</script>
</body>
</html>