/*--
标题：围堵
设计：王集鹄
博客：http://blog.csdn.net/zswang
日期：2009年12月5日
--*/

//2009年12月6日 王集鹄 添加 地图参数、马和象的走法、操作次数、图像样式的兼容 

function Box(options) {
    options = options || {};
    var self = this;
    this.rowCount = options.rowCount || 15; // 行数
    this.colCount = options.colCount || 15; // 列数
    this.kickCount = options.kickCount || 1; // 玩家操作多少次一个周期
    this.parent = options.parent || document.body; // 容器
    this.caption = options.caption || "Replay"; // 标题
    this.map = (options.map || "").replace(/\s+/g, ""); // 地图数据
    
    this.button = document.createElement("input");
    this.button.type = "button";
    this.button.value = this.caption;
    this.button.onclick = function() { 
        self.replay(); 
    };
    this.parent.appendChild(this.button);

    this.table_back = document.createElement("table");
    this.table_back.className = "table_back";
    this.table_back.cellPadding = "0px";
    this.table_back.cellSpacing = "0px";
    this.playing = false; // 是否在进行中
    this.floors = {}; // 矩阵地板矩阵 [y,x]
    for (var i = 0; i < this.rowCount; i++) {
        var tr = this.table_back.insertRow(-1);
        for (var j = 0; j < this.colCount; j++) {
            var td = tr.insertCell(-1);
            this.floors[i + "," + j] = new Floor({
                td: td
                , box: this
                , pos: { x: j, y: i }
            });
        }
    }
    this.parent.appendChild(this.table_back);
    this.replay();
}

// 重新开始
Box.prototype.replay = function() {
    this.playing = true;
    this.mickeys = [];
    this.step = 0;
    var k = 0;
    for (var i = 0; i < this.rowCount; i++) {
        for (var j = 0; j < this.colCount; j++) {
            var name = this.map.substr(k++, 1);
            switch(name) {
                case "1": case "x": case "w": case "c":
                    this.floors[i + "," + j].setState("closed");
                    break;
                case "r": case "b": case "n": case "q":
                    var mickey = new Mickey({name: name, box: this, pos: {x: j, y: i}});
                    this.mickeys.push(mickey);
                    break;
                default:
                    this.floors[i + "," + j].setState("blank");
                    break;
            }
        }
    }
};

// 下一个周期
Box.prototype.kick = function() {
    if (!this.playing) return;
    this.step++;
    if (this.step % this.kickCount != 0) return;
    var count = 0;
    var freedom = false;
    for (var i = 0; i < this.mickeys.length; i++) {
        if (this.mickeys[i].run()) count++;
        if (this.mickeys[i].freedom) freedom = true;
    }
    if (freedom) // 有老鼠跑了
        this.gameover();
    else if (!count) this.win();
};

// 游戏结束
Box.prototype.gameover = function() {
    if (!this.playing) return;
    this.playing = false;
    if (this.ongameover)
        this.ongameover();
    else alert(this.caption + "跑掉了。o(╯□╰)o");
};

Box.prototype.win = function() {
    if (!this.playing) return;
    this.playing = false;
    if (this.onwin) 
        this.onwin();
    else alert(this.caption + "O(∩_∩)O成功！");
};

// 地板
function Floor(options) {
    options = options || {};
    var self = this;
    this.td = options.td || {};
    this.td.innerHTML = "&nbsp;";
    this.td.onclick = function() {
        if (!self.box.playing) return; // 游戏已经结束
        if (self.state != "blank") return;
        self.setState("closed"