分享个用原生js写的贪吃蛇,最近在学java,按照当年写的 js的思路,转换成java,换汤不换药
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="Content-Language" content="en" />
<meta http-equiv="Content-Type" content="text/html; charset=utf8" />
<title>title</title>
<style type="text/css">
table{
border: 1px solid gray;
border-collapse:collapse;
}
td{
width:2px;
height:2px;
}
.red{
background-color:black;
}
.black{
background-color: red;
}
</style> <script type="text/javascript" >
(function(window){ function bind( fn, context ) {
if ( typeof context === "string" ) {
var tmp = fn[ context ];
context = fn;
fn = tmp;
} var slice = Array.prototype.slice; // Simulated bind
var args = slice.call( arguments, 2 ),
proxy = function() {
return fn.apply( context, args.concat( slice.call( arguments ) ) );
}; return proxy;
} function extend(o1, o2) {
for (var i in o2) o1[i] = o2[i];
return o1;
} function clog(d){
try{
console.log(d);
}catch(e){};
} function each(obj, callback, args) {
var name,i = 0,
len = obj.length,
isObj = len == undefined;
if(args){
if(isObj){
for(name in obj){
if(callback.apply(obj[name], args) === false ) break;
}
}else{
for(;i < len;){
if(callback.apply(obj[i++], args) === false ) break;
}
}
}else{
if(isObj){
for(name in obj){
if(callback.call(obj[name], name, obj[name]) === false ) break;
}
}else{
for(;i < len;){
if(callback.call(obj[i], i, obj[i++]) === false ) break;
}
}
}
}
function range(m, n) {
var arr = [];
for(;m <= n; m++){
arr[m] = m;
}
return arr;
}
var css = {
hasClass: function(a, b) {
return RegExp("\\b" + b + "\\b").test(a.className)
},
addClass: function(a, b) {
if (!this.hasClass(a, b)) a.className = a.className + " " + b
},
removeClass: function(a, b) {
a.className = a.className.replace(RegExp("\\b" + b + "\\b"), "")
}
};
function Snake(conf) {
var conf = extend({
x: 0,
y: 4,
keycode: 39,
move_arr: [[0,0,0],[0,1,1],[0,2,2],[0,3,3]],
food_arr: [],
step: 0,
t_size: 40,
speed: 100
}, conf);
extend(this, conf);
this.init();
};
Snake.prototype.init = function() {
var self = this, timer,
auto = function() {
if(self.x >= 0 && self.x < self.t_size && self.y >= 0 && self.y < self.t_size && self.is_moved()){
self.direct_opt();
timer = setTimeout(auto, self.speed);
}
};
this.last_keycode = this.keycode;
this.allow_arr = range(0, this.t_size * this.t_size - 1);
this.drawTable();
//按下按键
document.onkeydown = function (e){
var _code = (window.event||e).keyCode;
if(self.last_keycode != _code && Math.abs(_code-self.last_keycode) != 2){
self.last_keycode = self.keycode = _code;
}
clearTimeout(timer);
auto();
} var func = bind(this.random_food, this);
each(range(0,8), func);
this.random_food();
auto();
}
Snake.prototype.two2one = function(num, scale) {
scale = scale || this.t_size;
if(typeof num == 'number'){
return [Math.floor(num/scale), num%scale];
}else{
return num[0] * scale + num[1];
}
}
Snake.prototype.is_moved = function() {
var td = this.table.rows[this.x].cells[this.y]
return !css.hasClass(td, 'red');
}
Snake.prototype.random_food = function() {
var self = this,
rand = function(m, n) {
return Math.floor(Math.random() * ( n - m + 1) + m);
},
in_array = function(val, arr) {
var flag = false;
for(var i = 0; i < arr.length; i++){
if(arr[i] == val){
flag = true;
}
}
return flag;
},
get_no_moved_arr = function() {
var tmp_arr = [],moved_arr = self.move_arr,
arr = [], f_arr, move_num, moved_str;
if(self.food_arr.length > 0) {
moved_arr = moved_arr.concat(self.food_arr);
}
for(var i = 0; i < self.move_arr.length; i++) {
tmp_arr.push(self.move_arr[i][2]);
}
moved_str = ',' + tmp_arr.join(',') + ',';
for(var i = 0; i < self.allow_arr.length; i++) {
if(moved_str.indexOf(',' + self.allow_arr[i] + ',') === -1) {
arr.push(self.allow_arr[i]);
}
}
move_num = arr[rand(0, arr.length - 1)];
f_arr = self.two2one(move_num)
self.food_arr.push(f_arr.concat(move_num));
return f_arr;
},
no_moded_arr = get_no_moved_arr();
var rand_handler = this.table.rows[no_moded_arr[0]].cells[no_moded_arr[1]];
css.addClass(rand_handler, 'black');
}
Snake.prototype.drowSnake = function() {
for(var i = 0; i < this.move_arr.length; i++){
var cur = this.move_arr[i],
cur_handler = this.table.rows[cur[0]].cells[cur[1]];
if(!css.hasClass(cur_handler, 'red')){
css.addClass(cur_handler, 'red');
}
}
}
Snake.prototype.drawTable = function() {
document.body.innerHTML = 'total score: <span id="score">0</span>';
var table = document.createElement('table');
this.table = table;
for(var i = 0; i < this.t_size; i++){
var row = table.insertRow(0);
for(var j = 0; j < this.t_size; j++){
row.insertCell(0);
}
}
this.score = document.getElementById('score');
document.body.appendChild(table); this.drowSnake();
}
Snake.prototype.direct_opt = function() {
this.move_arr.push([this.x, this.y, this.two2one([this.x, this.y], this.t_size - 1)]);
this.drowSnake();
var next_pos = this.table.rows[this.x].cells[this.y];
if(this.step++ && !css.hasClass(next_pos, 'black')){
var last_pos = this.move_arr.shift();
css.removeClass(this.table.rows[last_pos[0]].cells[last_pos[1]], 'red');
}
if(css.hasClass(next_pos, 'black')){
css.removeClass(next_pos, 'black');
this.score.innerHTML = parseInt(this.score.innerHTML) + 10;
this.food_arr.shift();
this.random_food(); if(this.speed >80 && (this.move_arr.length - 4) % 10 == 0) {
this.speed *= 0.9;
}
}
switch(+this.keycode){
case 37:
this.y--;
break;
case 38:
this.x--;
break;
case 39:
this.y++;
break;
default:
this.x++;
}
}
Snake.prototype.drawTable1 = function() {
var str = '',
tr = [];
for(var i = 0; i < this.t_size; i++){
var td = [];
for(var j = 0; j < this.t_size; j++){
td.push('<td></td>');
}
tr.push('<tr>' + td.join('') + '</tr>');
}
str = '<table>' + tr.join('') + '</table>';
document.body.innerHTML = str;
}
window.Snake = Snake;
})(window);
window.onload = function() {
new Snake();
}
</script>
</head>
<body >
</body>
</html>
效果