基于JS制作一个简易的2048游戏
短信预约 -IT技能 免费直播动态提醒
效果图
实现代码
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>2048</title>
<style type="text/css">
.basic{
height:80px;
width:80px;
background-color:#DBDBDB;
float:left;
margin:2px;
}
.row{
height:80px;
clear:both;
}
</style>
</head>
<body>
<div id="pool"></div>
<div id="sample" class="basic" style='opacity: 0;'></div>
<div>score:<span id='score' style="font-size:200%;font-weight:bold;"></span></div>
<script type="text/javascript" >
//对象内使用，要加this
var container={
rowNum:4,
colNum:4,
score:0,//靠弄个Cookie记录下游戏记录
isMoved:false,//Block 有没有移动过
content:[],//{x:col,y:row,v:value}
colour:['#DBDBDB','#56A36C','#EFCEE8',
'#81C2D6','#8192D6','#D9B3E6',
'#DCF7A1','#83FCD8','#E8F2FF',
'#91C6FF','#B8F788','#58D2E8',
'#F2B6B6','#E8ED51','#FFE3FB',
'#E8FF8C','#FFDEC9','#F5A433',
'#E6109B','#96C4E6','#E560CD'],
colourObject:{},
//初始化 背景
loadBackground:function(){
var pool = document.getElementById("pool");
var sample = document.getElementById("sample")
var margin = 2;
var dotWidth = parseFloat(sample.offsetWidth) + margin;//基本方块宽度 + margin
for(var i = 0; i != this.rowNum; i++){
//创建行
var rDiv = document.createElement("div");
rDiv.setAttribute('id','r' + i);
rDiv.setAttribute('class','row');
for(var j = 0; j != this.colNum; j++){
var cDiv = document.createElement("div");
cDiv.setAttribute('id','c'+j + '_r' + i);
cDiv.setAttribute('class','basic');
rDiv.appendChild(cDiv);
}
rDiv.setAttribute('width',(this.colNum * (dotWidth + margin)) + 'px')
pool.appendChild(rDiv);
}
},
findBlock:function(colx, rowy){
return this.content.find(function(value){
return value.x == colx && value.y == rowy;
});
},
addBlockToMine:function(){//开局或移动后,添加新块
var zeroBlockArray = this.content.filter(function(value){
return value.v == 0;
});
if(zeroBlockArray.length != 0){
zeroBlockArray[this.makeRandomInteger(zeroBlockArray.length)].v =
(this.makeRandomInteger(2) + 1) * 2;
}
},
makeRandomInteger:function(scope){
return Math.floor(Math.random() * scope);
},
checkDeath:function(){
if(this.content.filter(function(value){
return value.v == 0;
}).length != 0){
return false;//有零块就表示没有死
}else{
//满格时，检测相邻之间可合并的可能性//Jallen Kwong
//再没有合并的可能，没有的话，游戏就结束
//穷举法(不聪明的方法)
for(var i = 0; i < this.rowNum; i++){
if(i != this.rowNum - 1){
for(var j = 0;j < this.colNum; j++){
var mainBlock = this.findBlock(j, i);
var downBlock = this.findBlock(j, i + 1);
if(j != this.colNum - 1){
var rightBlock = this.findBlock(j + 1,i);
if(mainBlock.v == rightBlock.v
|| mainBlock.v == downBlock.v){
return false;
}
}else{
if(mainBlock.v == downBlock.v){
return false;
}
}
}
}else{
for(var j = 0;j < this.colNum - 1; j++){
var mainBlock = this.findBlock(j, i);
var rightBlock = this.findBlock(j + 1, i);
if(mainBlock.v == rightBlock.v){
return false;
}
}
}
}
return true;//真的Game Over
}
},
refresh:function(){//刷新显示页面
for(var row = 0;row < this.rowNum;row++){
for(var col = 0;col < this.colNum;col++){
var value = this.findBlock(col,row).v;
var elem = document.getElementById('c'+col+'_r'+row);
elem.style.backgroundColor = this.colourObject[value] == undefined?this.colourObject[0]:this.colourObject[value];
elem.innerHTML
= (value == 0 ? "" : "<span style='font-size:200%;font-weight:bold;'>"+value+"</span>");
}
}
document.getElementById('score').innerHTML = this.score;
},
addKeyListener:function(event){
var keycode = event.keyCode;
if(keycode >= 37 && keycode <= 40){
//alert(keycode);
event.preventDefault();
var changeCount = 0;//记住块有没真正得移动过
switch(keycode){
case 37://左
//console.log(keycode);
for(var i = 0; i < this.rowNum; i++){
var queue = [];
var flag = false;
//入栈
for(var j = 0 ; j < this.colNum; j++){
var block = this.findBlock(j, i);
if(block.v == 0){
continue;
}
flag = this.coreCalculate(block, queue, flag);
}
//出队列
for(var k = 0 ;k < this.colNum; k++){
changeCount += this.outOfQueue(k, i, queue, k);
}
}
break;
case 38://上
for(var i = 0; i < this.colNum; i++){
var queue = [];
var flag = false;
for(var j = 0 ;j < this.rowNum; j++){
var block = this.findBlock(i, j);
if(block.v == 0){
continue;
}
flag = this.coreCalculate(block, queue, flag);
}
//出队列
for(var k = 0 ;k < this.rowNum; k++){
changeCount += this.outOfQueue(i, k, queue, k);
}
}
break;
case 39://右
for(var i = 0; i < this.rowNum; i++){
var queue = [];
var flag = false;
//入栈
for(var j = this.colNum - 1 ; j >= 0; j--){
var block = this.findBlock(j, i);
if(block.v == 0){
continue;
}
flag = this.coreCalculate(block, queue, flag);
}
//console.log(queue);
//出队列
for(var k = this.colNum - 1 ,l = 0;k >= 0; k--,l++){
changeCount += this.outOfQueue(k, i, queue, l);
}
}
break;
case 40://下
for(var i = 0; i < this.colNum; i++){
var queue = [];
var flag = false;
for(var j = this.rowNum - 1 ;j >= 0; j--){
var block = this.findBlock(i, j);
if(block.v == 0){
continue;
}
flag = this.coreCalculate(block, queue, flag);
}
//出队列
for(var k = this.rowNum - 1 ,l = 0;k >= 0; k--,l++){
changeCount += this.outOfQueue(i, k, queue, l);
}
}
break;
default:break;
}
//要检查content的v们有没有改变过
//1.入栈操作前，要来个数组拷贝，然后在做比对，这做法并不聪明
//2.出队列的时候，跟原来的值进行比较，有改变 changCount++
//console.log('changeCount:' + changeCount);
if(changeCount != 0){
this.addBlockToMine();
this.refresh();//刷新显示页面
if(this.checkDeath()){
alert("Game Over!");
document.onkeydown = function(event){
var keycode = event.keyCode;
if(keycode >= 37 && keycode <= 40){
event.preventDefault();
alert("Game Over!");
}
};
}
}
}
},
init:function(){
for(var row = 0; row < this.rowNum; row++){
for(var col = 0; col < this.colNum; col++){
this.content[this.content.length] = {x:col,y:row,v:0};
}
}
for(var i = 0;i <= 20;i++){
if(i == 0){
this.colourObject[i] = this.colour[i];
continue;
}
this.colourObject[Math.pow(2,i)] = this.colour[i];
}
//console.log(this.colourObject[7]);
},
coreCalculate:function(block, queue, flag){ flag的作用，入栈方式有问题，譬如2,2,4 应得 4,4 但结果 得8
if(queue.length == 0 ){
queue[queue.length] = block.v;
return flag;
}else{
var tailOfQueue = queue[queue.length - 1];
if((tailOfQueue == block.v) && !flag){
this.score += (queue[queue.length - 1] = tailOfQueue * 2);
return true;
}else{
queue[queue.length] = block.v;
return false;
}
}
},
outOfQueue:function(colx, rowy, queue, index){
var block = this.findBlock(colx, rowy);
var oldValue = block.v;
block.v = queue[index] == undefined ? 0 : queue[index];
return oldValue != block.v? 1 : 0;
}
};
//main
window.onload = function(){
container.loadBackground();
container.init();
//alert(container.findBlock(1,1).v);
container.addBlockToMine();
container.addBlockToMine();
container.refresh();
document.addEventListener('keydown', function(event){
container.addKeyListener(event);
});
};
</script>
</body>
</html>
到此这篇关于基于JS制作一个简易的2048游戏的文章就介绍到这了,更多相关JS 2048游戏内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网！
免责声明：
① 本站未注明“稿件来源”的信息均来自网络整理。其文字、图片和音视频稿件的所属权归原作者所有。本站收集整理出于非商业性的教育和科研之目的，并不意味着本站赞同其观点或证实其内容的真实性。仅作为临时的测试数据，供内部测试之用。本站并未授权任何人以任何方式主动获取本站任何信息。
② 本站未注明“稿件来源”的临时测试数据将在测试完成后最终做删除处理。有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
