JS小游戏之极速快跑源码详解
内容摘要
本文实例讲述了JS小游戏的极速快跑源码,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部分代码如下:
/** 极速快跑
* Author: fdipzone
* Date: 2012-0
游戏运行后如下图所示:
Javascript部分代码如下:
/** 极速快跑
* Author: fdipzone
* Date: 2012-0
文章正文
本文实例讲述了JS小游戏的极速快跑源码,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部分代码如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 | /** 极速快跑 * Author: fdipzone * Date: 2012-07-15 * Ver: 1.0 */ var gameimg = [ 'images/start.png' , 'images/start_over.png' , 'images/go.png' , 'images/go_over.png' , 'images/running.gif' , 'images/run_start1.gif' , 'images/run_start2.gif' , 'images/run_start3.gif' ]; var speed_obj = new SpeedClass(); window.onload = function (){ var callback = function (){ speed_obj.init(); } img_preload(gameimg, callback); } // Speed Class function SpeedClass(){ this.levelset = [8,5,8,12]; // 难度参数 this.playerlist = null; // 选手列表 this.player = 0; // 选中的选手 this.level = 2; // 难度 this.lock = 0; // 锁定 this.isstart = 0; // 是否开始 this.isover = 0; // 是否结束 } // init SpeedClass.prototype.init = function (){ this.reset(); this.create_player(); this.create_event(); } // reset SpeedClass.prototype.reset = function (){ this.player = 0; this.level = $( 'level' ).value; // level this.playerlist = $_tag ( 'li' , 'playerlist' ); for ( var i=0; i<this.playerlist.length; i++){ this.playerlist[i].className = '' ; } disp( 'start_btn' , 'show' , 'start_btn' ); disp( 'go_btn' , 'hide' , 'go_btn' ); this.lock = 0; // unlock this.isstart = 0; // unstart this.isover = 0; // unover } // create player SpeedClass.prototype.create_player = function (){ var runway = []; var playerlist = []; for ( var i=1; i<=8; i++){ runway[i] = '<li><div id="player' + (9-i) + '" class="run_status1"></div></li>' ; playerlist[i] = '<li>' + i + '</li>' ; } $( 'runway' ).innerHTML = runway.join( '' ); $( 'playerlist' ).innerHTML = playerlist.join( '' ); runway = null; playerlist = null; } // create event SpeedClass.prototype.create_event = function (){ var self = this; this.playerlist = $_tag ( 'li' , 'playerlist' ); for ( var i=0; i<this.playerlist.length; i++){ this.playerlist[i].onmouseover = function (){ if (this.className!= 'on' ){ this.className = 'over' ; } } this.playerlist[i].onmouseout = function (){ if (this.className!= 'on' ){ this.className = '' ; } } this.playerlist[i].onclick = function (o,c){ return function (){ if (self.lock==0){ o.playerlist[c].className = 'on' ; if (o.player!=0 && o.player!=c+1){ // 不等於0且不等於自己 o.playerlist[o.player-1].className = '' ; } o.player = c + 1; } } }(self, i); } $( 'start_btn' ).onmouseover = function (){ this.className = 'start_over_btn' ; } $( 'start_btn' ).onmouseout = function (){ this.className = 'start_btn' ; } $( 'start_btn' ).onclick = function (){ if (self.player==0){ return alert( '请选择要支持的选手' ); } else { self.lock = 1; // locked disp( 'start_btn' , 'hide' ); disp( 'go_btn' , 'show' ); for ( var i=1; i<=8; i++){ self.start(i); } } } $( 'go_btn' ).onmouseover = function (){ this.className = 'go_over_btn' ; } $( 'go_btn' ).onmouseout = function (){ this.className = 'go_btn' ; } $( 'go_btn' ).onclick = function (){ self.go(); } } // start game SpeedClass.prototype.start = function (c){ var o = $( 'player' + c); var step = 1; var self = this; var exert = 0; o.style.marginLeft = '62px' ; // init var et = setInterval( function (){ if (step<4){ // step 1-3 is ready o.className = 'run_status' + step; } else { // run if (o.className!= 'running' ){ o.className = 'running' ; } // start can go if (self.isstart==0){ self.isstart = 1; } // 已有一名选手到达终点 if (self.isover==1){ clearInterval(et); } else { if (self.player!=c){ // 其他选手 exert = Math. floor (Math.random()* self.levelset[self.level])+3; // 根据level调整 } o.style.marginLeft = parseInt(o.style.marginLeft) + Math. floor (Math.random()*8)+4 + exert + 'px' ; // 到达终点 if (parseInt(o.style.marginLeft)>=745){ clearInterval(et); self.isover = 1; self.gameover(o.id); } } } step ++; }, 350) } // go SpeedClass.prototype.go = function (){ if (this.isstart==1 && this.isover==0){ var o = $( 'player' + this.player); var exert = Math. floor (Math.random()*3)+2; // 2-5 o.style.marginLeft = parseInt(o.style.marginLeft) + exert + 'px' ; } return false; } // gameover SpeedClass.prototype.gameover = function (id){ id = id.replace( 'player' , '' ); var self = this; var msg = '' ; if (id==this.player){ msg = "恭喜你,你支持的选手获得胜利\n\n" ; } else { msg = "很遗憾,你支持的选手没有获得胜利,获胜的是" + id + "号选\n\n" ; } if (confirm(msg + '是否重新开始?' )==true){ setTimeout( function (){ self.init(); },1000); } else { 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 * @param classname */ function disp(id, handle, classname){ if (handle== 'show' ){ $(id).style.display = 'block' ; } else { $(id).style.display = 'none' ; } if (typeof(classname)!= 'undefined' ){ $(id).className = classname; } } /* 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callback clearInterval(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的javascript游戏设计有一定的借鉴价值。
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