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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style type="text/css">
*{
margin:0;
padding: 0;
}
table{
border-spacing: 0;
border-collapse:0;
}
td{
border:1px solid #eee;
width:50px;
height:50px;
text-align:center;
font-weight: bold;
box-sizing:border-box;
}
.blank{
border:none;
}
#robot-box{
background:url(./img/QQ.jpg) no-repeat;
background-size: contain;
width:50px;
height:50px;
position:absolute;
top:50px;
left:50px;
transition: all 1s;
}
ul{
font-size:1.5rem;
}
#command-part-display{
display:flex;
}
#command-part{
width:340px;
}
#command-part-button{
display:flex;
justify-content: space-around;
}
#command-part-button input{
background-color:#6289AF;
border:none;
color:white;
padding: 5px 10px;
cursor:pointer;
border:none;
}
#command-part{
margin:10px;
}
#command_input{
width:300px;
height:500px;
color: rgb(0, 255, 0);
background-color:#34495E;
border:none;
font-size:30px;
line-height: 30px;
}
#command_display_count{
background-color:#2C3E50;
color:white;
height:500px;
width:40px;
}
#command_display_count li{
text-align:center;
line-height: 32px;
}
.wrapper{
display:flex;
}
</style>
</head>
<body>
<div class="wrapper">
<table>
<tr>
<td class="blank"></td>
<td class="blank">1</td>
<td class="blank">2</td>
<td class="blank">3</td>
<td class="blank">4</td>
<td class="blank">5</td>
<td class="blank">6</td>
<td class="blank">7</td>
<td class="blank">8</td>
<td class="blank">9</td>
<td class="blank">10</td>
</tr>
<tr>
<td class="blank">1</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td class="blank">2</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td class="blank">3</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td class="blank">4</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td class="blank">5</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td class="blank">6</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td class="blank">7</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td class="blank">8</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td class="blank">9</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td class="blank">10</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</table>
<div id="command-part">
<div id="command-part-button">
<input type="button" id="command_button" value="执行">
<input type="button" id="clean_button" value="清空">
<input type="button" id="refresh_button" value="刷新">
</div>
<div id="command-part-display">
<ul id="command_display_count">
</ul>
<textarea name="text" id="command_input"></textarea>
</div>
</div>
</div>
<ul>
<li>
"支持大小写混写，但书写必需规范化。"
<br>
"PS：n如果为空，则默认为1。"
</li>
<br>
<li>
新增上下左右键输出TRA的命令
</li>
<br>
<li>GO：确认按钮，不填任何指令则默认向头顶朝的方向前进一格</li>
<li>TUN LEF：向左转（逆时针旋转90度）</li>
<li>TUN RIG：向右转（顺时针旋转90度）</li>
<li>TUN BAC：向右转（旋转180度）</li>
<li>TRA LEF：向屏幕的左侧移动一格，方向不变</li>
<li>TRA TOP：向屏幕的上面移动一格，方向不变</li>
<li>TRA RIG：向屏幕的右侧移动一格，方向不变</li>
<li>TRA BOT：向屏幕的下面移动一格，方向不变</li>
<li>MOV LEF：方向转向屏幕左侧，并向屏幕的左侧移动一格</li>
<li>MOV TOP：方向转向屏幕上面，向屏幕的上面移动一格</li>
<li>MOV RIG：方向转向屏幕右侧，向屏幕的右侧移动一格</li>
<li>MOV BOT：方向转向屏幕下面，向屏幕的下面移动一格</li>
</ul>
<script type="text/javascript">
// var robot = document.getElementById("robot_box");
var cmd_btn = document.getElementById("command_button");
var command_input = document.getElementById("command_input");
document.getElementById('command_input').value = 'MOV RIG 3 \nmoV bot 3\nMOV lef 1\ntra bot 2';
updateLineNum();
class RobotBox {
constructor(){
this.deg = 0;
this.face = 0;
this.xPos = 50;
this.yPos = 50;
this.robot = document.createElement("div");
}
turnLeft(){
this.deg -= 90;
this.robot.style.transform = "rotateZ(" +this.deg + "deg)";
this.face=(this.face+4-1)%4;
}
turnRight(){
this.deg+=90;
this.robot.style.transform = "rotateZ("+this.deg+"deg)";
// this.robot.style="transform: rotateZ(90deg);background-color:red;";
//这样直接修改style才需要写；
//rotateZ里面不能写; 因为我们修改的是transform
//style="transform: rotateZ(90deg);"自动添加;
this.face=(this.face+1)%4;
}
turnBack(){
this.deg+=180;
this.robot.style.transform = "rotateZ("+this.deg+"deg)";
this.face=(this.face+2)%4;
}
tra_lef(){
if(this.xPos-50>=50)
{
this.xPos-=50;
this.robot.style.left = this.xPos+"px";
}
}
tra_top(){
if(this.yPos-50>=50)
{
this.yPos-=50;
this.robot.style.top = this.yPos+"px";
}
}
tra_rig(){
if(this.xPos+50<=500)
{
this.xPos+=50;
this.robot.style.left = this.xPos+"px";
}
}
tra_bot(){
if(this.yPos+50<=500)
{
this.yPos+=50;
this.robot.style.top = this.yPos+"px";
}
}
go(str,line_num){
var command_input = str;
var Li = document.getElementById('command_display_count').getElementsByTagName("li");
Li[line_num].style.borderRadius="10px";
Li[line_num].style.backgroundColor="rgb(127, 173, 218)";
if(command_input=="TUN LEF")
{
this.turnLeft();
}
else if(command_input=="TUN RIG"){
this.turnRight();
}
else if(command_input=="TUN BAG"){
this.turnBack();
}
else if(command_input=="")
{
if(this.face==0)
{
if(this.yPos-50>=50)
{
this.yPos-=50;
this.robot.style.top = this.yPos+"px";
}
}
else if(this.face==1)
{
if(this.xPos+50<=500)
{
this.xPos+=50;
this.robot.style.left = this.xPos+"px";
}
}
else if(this.face==2){
if(this.yPos+50<=500)
{
this.yPos+=50;
this.robot.style.top = this.yPos+"px";
}
}
else if(this.face==3)
{
if(this.xPos-50>=50)
{
this.xPos-=50;
this.robot.style.left = this.xPos+"px";
}
}
}
else if(command_input=="TRA LEF")
{
this.tra_lef();
}
else if(command_input=="TRA TOP")
{
this.tra_top();
}
else if(command_input=="TRA RIG")
{
this.tra_rig();
}
else if(command_input=="TRA BOT")
{
this.tra_bot();
}
else if(command_input=="MOV LEF")
{
if(this.xPos-50>=50)
{
this.xPos-=50;
this.robot.style.left = this.xPos+"px";
this.face=3;
this.deg = -90;
this.robot.style.transform="rotateZ(-90deg)"
// this.robot.style.transform = "rotateZ(" +-90 + "deg)";
}
}
else if(command_input=="MOV TOP")
{
if(this.yPos-50>=50)
{
this.yPos-=50;
this.robot.style.top = this.yPos+"px";
this.face=0;
this.deg = 0;
this.robot.style.transform="rotateZ(0deg)"
}
}
else if(command_input=="MOV RIG")
{
if(this.xPos+50<=500)
{
this.xPos+=50;
this.robot.style.left = this.xPos+"px";
this.face=1;
this.deg = 90;
this.robot.style.transform="rotateZ(90deg)"
}
}
else if(command_input=="MOV BOT")
{
if(this.yPos+50<=500)
{
this.yPos+=50;
this.robot.style.top = this.yPos+"px";
this.face=2;
this.deg = 180;
this.robot.style.transform="rotateZ(180deg)"
}
}
else{
alert("输入TUN LEF或TUN RIG或TUN BAG或不输入");
}
}
init(name){
this.robot.id=name;
document.body.appendChild(this.robot);
}
};
var robot = new RobotBox("robot-box");
robot.init("robot-box");
//创建行数标记
function renderLineNum(count){
var command_display_count = document.getElementById('command_display_count');
command_display_count.innerHTML="";
for(var i =1;i<=count;i++){
var li = document.createElement("li");
var txt=document.createTextNode(i);
li.appendChild(txt);
command_display_count.appendChild(li);
}
}
//检测键盘是否输入回车，实时更新lineNum
function updateLineNum(){
if(command_input.value.match(/\n/g))
renderLineNum(command_input.value.match(/\n/g).length+1);
else{
renderLineNum(1);
}
}
function enhanceCommand(str){
var filter = /\n/g;
var inputArr = str.split(filter);
return inputArr;
}
var conmmand_input;
var times;
//关键在命令执行时要一条条执行，等动画完了再进行下一条如何实现
//跟以前一样用递归实现，函数套函数
function render(){
var inputArr = enhanceCommand(command_input.value);
var x = 0;
(function bigLoop(){
if(x<inputArr.length){
var times = "";
if(inputArr[x].slice(0,2).toUpperCase()=="GO"){
conmmand_input = "GO";
times = inputArr[x].slice(3)?Number(inputArr[x].slice(3)):1;
}
else if(inputArr[x]=="")
{
conmmand_input = "blank";
times = 1;
}
else{
conmmand_input = inputArr[x].slice(0,7);
times = inputArr[x].slice(8)?Number(inputArr[x].slice(8)):1;
}
if(isNaN(times)){
alert("次数输入有误");
return;
}
var i =0;
//走n步再拆成递归n次,因为实际上每次都要走一次transform的动画
//所以必须要用递归了
finalLoop();
function finalLoop(){
if(i<times){
robot.go(conmmand_input.toUpperCase(),x);
setTimeout(finalLoop,1000);
i++;
}
else{//这一语句走完了，准备走下一语句
x++;
setTimeout(bigLoop,1000);
}
}
}
})()
}
// cmd_btn.addEventListener("click",robot.go,false);
// t_left.addEventListener("click",robot.turnLeft,false);
// t_right.addEventListener("click",robot.turnRight,false);
// t_back.addEventListener("click",robot.turnBack,false);
//上面这种写法，会把RoboxBox的turnLeft作为t_left的触发事件,但触发该事件的是t_left
//相当于t_left.robot.turnLeft(),所以this指向t_left
//所以调用时t_left的this指向t_left,所以会疯狂报错
//两种解决方法，一种像下面，写成function然后robot.turnLeft()这样turnLeft的this指向robot
//第二种，RobotBox里的函数改成箭头函数写法()=>{}这样函数里的this永远指向RobotBox
cmd_btn.addEventListener("click",render,false);
document.getElementById("clean_button").addEventListener("click",function(){command_input.value="";},false);
document.getElementById("refresh_button").addEventListener("click",function(){location.reload();},false);
document.onkeydown = function(e){
var event = e||window.event;
var code = event.which;
if(code==37)
{
robot.tra_lef();
}
else if(code==38)
{
robot.tra_top();
}
else if(code==39)
{
robot.tra_rig();
}
else if(code==40){
robot.tra_bot();
}
else if(code==13||code==8)//删除可能要少一行，回车要多一行,这两种情况调用
{
updateLineNum();
}
}
</script>
</body>
</html>