JS小游戏之象棋暗棋源码详解

本文实例讲述了JS小游戏的象棋暗棋源码，分享给大家供大家参考。具体如下：

游戏运行后如下图所示：

Javascript 部分：

/** chinese chess * Author: fdipzone * Date: 2012-06-24 * Ver: 1.0 */var gameimg = ['images/a1.gif','images/a2.gif','images/a3.gif','images/a4.gif','images/a5.gif','images/a6.gif','images/a7.gif','images/b1.gif','images/b2.gif','images/b3.gif','images/b4.gif','images/b5.gif','images/b6.gif','images/b7.gif','images/bg.gif','images/bg_over.gif','images/bg_sel.gif']; var chess_obj = new ChessClass();window.onload = function(){$('init_btn').onclick = function(){chess_obj.init();}var callback = function(){chess_obj.init();}img_preload(gameimg, callback); }// chess class function ChessClass(){this.chess = [];this.boardrows = 4;this.boardcols = 8;this.area = 82;this.player = 1; // 1:red 2:greenthis.selected = null; // selected chessthis.chesstype = ['', 'a', 'b'];this.isover = 0; }// init ChessClass.prototype.init = function(){this.reset_grade();this.create_board();this.create_chess();this.create_event();this.player = 1;this.selected = null;this.isover = 0;disp('init_div','hide'); }// create board ChessClass.prototype.create_board = function(){var board = '';for(var i=0; i<this.boardrows; i++){for(var j=0; j<this.boardcols; j++){board = board + '<div><img src="images/chessbg.gif" /></div>';}}$('board').innerHTML = board;$('board').style.width = this.boardcols * (this.area + 2) + 'px';$('board').style.height = this.boardrows * (this.area + 2) + 'px'; }// create random chess ChessClass.prototype.create_chess = function(){// 32 chessesvar chesses = ['a1','b7','a2','b7','a2','b7','a3','b7','a3','b7','a4','b6','a4','b6','a5','b5','a5','b5','a6','b4','a6','b4','a7','b3','a7','b3','a7','b2','a7','b2','a7','b1'];this.chess = [];while(chesses.length>0){var rnd = Math.floor(Math.random()*chesses.length);var tmpchess = chesses.splice(rnd, 1).toString();this.chess.push({'chess':tmpchess, 'type':tmpchess.substr(0,1), 'val':tmpchess.substr(1,1), 'status':0});} }// create event ChessClass.prototype.create_event = function(){var self = this;var chess_area = $_tag('div', 'board');for(var i=0; i<chess_area.length; i++){chess_area[i].onmouseover = function(){ // mouseoverif(this.className!='onsel'){this.className = 'on';}}chess_area[i].onmouseout = function(){ // mouseoutif(this.className!='onsel'){this.className = '';}}chess_area[i].onclick = function(){ // onclickself.action(this);}} }// id change index ChessClass.prototype.getindex = function(id){var tid = id.split('_');return parseInt(tid[0])*this.boardcols + parseInt(tid[1]); }// index change id ChessClass.prototype.getid = function(index){return parseInt(index/this.boardcols) + '_' + parseInt(index%this.boardcols); }// action ChessClass.prototype.action = function(o){if(this.isover==1){ // game overreturn false;}var index = this.getindex(o.id);if(this.selected == null){ // 未选过棋子if(this.chess[index]['status'] == 0){ // not openedthis.show(index);}else if(this.chess[index]['status'] == 1){ // openedif(this.chess[index]['type'] == this.chesstype[this.player]){this.select(index);}}}else{ // 已选过棋子if(index != this.selected['index']){// 與selected不是同一位置if(this.chess[index]['status'] == 0){// 未打开的棋子this.show(index);}else if(this.chess[index]['status'] == -1){ // 點空白位置this.move(index);}else{// 點其他棋子if(this.chess[index]['type']==this.chesstype[this.player]){this.select(index);}else{this.kill(index);}}}} }// show chess ChessClass.prototype.show = function(index){$(this.getid(index)).innerHTML = '<img src="images/' + this.chess[index]['chess'] + '.gif" />';this.chess[index]['status'] = 1; // openedif(this.selected!=null){// 清空選中$(this.getid(this.selected.index)).className = '';this.selected = null;}this.change_player();this.gameover(); }// select chess ChessClass.prototype.select = function(index){if(this.selected!=null){$(this.getid(this.selected['index'])).className = '';}this.selected = {'index':index, 'chess':this.chess[index]};$(this.getid(index)).className = 'onsel'; }// move chess ChessClass.prototype.move = function(index){if(this.beside(index)){this.chess[index] = {'chess':this.selected['chess']['chess'], 'type':this.selected['chess']['type'], 'val':this.selected['chess']['val'], 'status':this.selected['chess']['status']};this.remove(this.selected['index']);this.show(index);} }// kill chess ChessClass.prototype.kill = function(index){if(this.beside(index)==true && this.can_kill(index)==true){this.chess[index] = {'chess':this.selected['chess']['chess'], 'type':this.selected['chess']['type'], 'val':this.selected['chess']['val'], 'status':this.selected['chess']['status']};this.remove(this.selected['index']);var killed = this.player==1? 2 : 1;$('grade_num' + killed).innerHTML = parseInt($('grade_num' + killed).innerHTML)-1;this.show(index);} }// remove chess ChessClass.prototype.remove = function(index){this.chess[index]['status'] = -1; // empty$(this.getid(index)).innerHTML = '';$(this.getid(index)).className = ''; }/* check is beside * @param index 目標棋子index * @param selindex 执行的棋子index，可为空, 为空则读取选中的棋子 */ ChessClass.prototype.beside = function(index,selindex){if(typeof(selindex)=='undefined'){if(this.selected!=null){selindex = this.selected['index'];}else{return false;}}if(typeof(this.chess[index])=='undefined'){return false;}var from_info = this.getid(selindex).split('_');var to_info = this.getid(index).split('_');var fw = parseInt(from_info[0]);var fc = parseInt(from_info[1]);var tw = parseInt(to_info[0]);var tc = parseInt(to_info[1]);if(fw==tw && Math.abs(fc-tc)==1 || fc==tc && Math.abs(fw-tw)==1){ // row or colunm is same and interval=1return true;}else{return false;} }/* check can kill * @param index 被消灭的棋子index * @param selindex 执行消灭的棋子index，可为空, 为空则读取选中的棋子 */ ChessClass.prototype.can_kill = function(index,selindex){if(typeof(selindex)=='undefined'){ // 没有指定执行消灭的棋子if(this.selected!=null){ // 有选中的棋子selindex = this.selected['index'];}else{return false;}}if(this.chess[index]['type']!=this.chesstype[this.player]){if(parseInt(this.chess[selindex]['val'])==7 && parseInt(this.chess[index]['val'])==1){ // 7 can kill 1return true;}else if(parseInt(this.chess[selindex]['val'])==1 && parseInt(this.chess[index]['val'])==7){ // 1 can't kill 7return false;}else if(parseInt(this.chess[selindex]['val']) <= parseInt(this.chess[index]['val'])){ // small kill bigreturn true;}}return false; }// change player ChessClass.prototype.change_player = function(){if(this.player == 1){this.player = 2; // to green$('grade_img2').className = 'img_on';$('grade_img1').className = 'img';}else{this.player = 1; // to red$('grade_img1').className = 'img_on';$('grade_img2').className = 'img';} }// reset grade ChessClass.prototype.reset_grade = function(){$('grade_img1').className = 'img_on';$('grade_img2').className = 'img';$('grade_num1').innerHTML = $('grade_num2').innerHTML = 16;$('grade_res1').className = $('grade_res2').className = 'none';$('grade_res1').innerHTML = $('grade_res2').innerHTML = ''; }// game over ChessClass.prototype.gameover = function(){if($('grade_num1').innerHTML==0 || $('grade_num2').innerHTML==0){ // 任一方棋子为0this.isover = 1;this.show_grade();disp('init_div','show');}else{if(this.can_action()==false){this.isover = 1;this.show_grade();disp('init_div','show');}} }// show grade ChessClass.prototype.show_grade = function(){var num1 = parseInt($('grade_num1').innerHTML);var num2 = parseInt($('grade_num2').innerHTML);if(num1>num2){ // 红方胜$('grade_res2').innerHTML = 'LOSS';$('grade_res2').className = 'loss';$('grade_res1').innerHTML = 'WIN';$('grade_res1').className = 'win';}else if(num1<num2){ // 黑方胜$('grade_res1').innerHTML = 'LOSS';$('grade_res1').className = 'loss';$('grade_res2').innerHTML = 'WIN';$('grade_res2').className = 'win';}else{ // 平局$('grade_res1').innerHTML = $('grade_res2').innerHTML = 'DRAW';$('grade_res1').className = $('grade_res2').className = 'draw';} }// check chess can action ChessClass.prototype.can_action = function(){var chess = this.chess;for(var i=0,max=chess.length; i<max; i++){if(chess[i].status==0){ // 有未翻开的棋子return true;}else{if(chess[i].status==1 && chess[i].type==this.chesstype[this.player]){ // 己方已翻开的棋子if(this.beside(i-this.boardcols, i) && (chess[i-this.boardcols].status==-1 || this.can_kill(i-this.boardcols,i) )){ // 上return true;}if(this.beside(i+this.boardcols, i) && (chess[i+this.boardcols].status==-1 || this.can_kill(i+this.boardcols,i) )){ // 下return true;}if(this.beside(i-1, i) && (chess[i-1].status==-1 || this.can_kill(i-1,i) )){ // 左return true;}if(this.beside(i+1, i) && (chess[i+1].status==-1 || this.can_kill(i+1,i) )){ // 右return true;}}}}return false; }/** common function */// get document.getElementBy(id) function $(id){this.id = id;return document.getElementById(id); }// get document.getElementsByTagName function $_tag(name, id){if(typeof(id)!='undefined'){return $(id).getElementsByTagName(name);}else{return document.getElementsByTagName(name);} }/* div show and hide * @param id dom id * @param handle show or hide */ function disp(id, handle){if(handle=='show'){$(id).style.display = 'block';}else{$(id).style.display = 'none';} }/* img preload * @param img 要加载的图片数组 * @param callback 图片加载成功后回调方法 */ function img_preload(img, callback){var onload_img = 0;var tmp_img = [];for(var i=0,imgnum=img.length; i<imgnum; i++){tmp_img[i] = new Image();tmp_img[i].src = img[i];if(tmp_img[i].complete){onload_img ++;}else{tmp_img[i].onload = function(){onload_img ++;}}}var et = setInterval(function(){if(onload_img==img.length){ // 定时器,判断图片完全加载后调用callbackclearInterval(et);callback();}},200); }

完整实例代码点击此处本站下载。

相信本文所述对大家javascript游戏设计的学习有一定的借鉴价值。