javascript制作坦克大战全纪录（2）

 // 障碍物基类对象，继承自TankObject
 Barrier = function () {
     this.DefenVal = 1;  // 防御力
     this.CanBeAttacked = true;  // 是否可以被攻击
 }
 Barrier.prototype = new TankObject();
 // 墙
 WallB = function () { }
 WallB.prototype = new Barrier();
 // 空地
 EmptyB = function () {
     this.CanAcross = true;  // 可被穿过
 }
 EmptyB.prototype = new Barrier();
 // 河流
 RiverB = function () {
     this.DefenVal = 0;
     this.CanBeAttacked = false; // 优先取对象的成员，继承自父类的会被覆盖。
 }
 RiverB.prototype = new Barrier();
 // 钢
 SteelB = function () {
     this.DefenVal = 3;
 }
 SteelB.prototype = new Barrier();
 // 草丛对象
 TodB = function () {
     this.CanBeAttacked = false;
     this.DefenVal = 0;
     this.CanAcross = true;
 }
 TodB.prototype = new Barrier();
 // 总部
 PodiumB = function () {
     this.DefenVal = 5;
 }
 PodiumB.prototype = new Barrier();

 //地图元素类型枚举
 /*
 0：空地   
 1：墙   
 2：钢   
 3：树丛       
 4：河       
 5：总部   
 */
 var EnumMapCellType = {
     Empty: "0"
     , Wall: "1"
     , Steel: "2"
     , Tod: "3"
     , River: "4"
     , Podium: "5"
 };
 // 每个地形对应的样式名称
 var ArrayCss = ['empty', 'wall', 'steel', 'tod', 'river', 'podium'];
 // 关卡地图
 /*关卡*/
 var str = '0000000000000';
 str += ',0011100111010';
 str += ',1000010000200';
 str += ',1200333310101';
 str += ',0000444400001';
 str += ',3313300001011';
 str += ',3011331022011';
 str += ',3311031011011';
 str += ',0101011102010';
 str += ',0101011010010';
 str += ',0100000000110';
 str += ',0100012101101';
 str += ',0010015100000';
 // 存储关卡地图   0,1,2,3... 分别为1-n ... 关
 var Top_MapLevel = [str];

 // 游戏载入对象 整个游戏的核心对象
 GameLoader = function () {
     this._mapContainer = document.getElementById("divMap");  // 存放游戏地图的div
     this._selfTank = null;  // 玩家坦克
     this._gameListener = null; // 游戏主循环计时器id
     /*v2.0新加的属性*/
     this._level = 1;
     this._rowCount = 13;
     this._colCount = 13;
     this._battleField = []; // 存储地图对象二维数组
 }
 // 加载地图方法
    Load: function () {
         // 根据等级初始化地图
         var map = Top_MapLevel[this._level - 1].split(",");
         var mapBorder = UtilityClass.CreateE("div", "", "mapBorder", this._mapContainer);
         // 遍历地图表格中每一个单元格
         for (var i = 0; i < this._rowCount; i++) {
             // 创建div，每一行的地图保存在这个div中
             var divRow = UtilityClass.CreateE("div", "", "", mapBorder);
             // 在一维数组中再创建一个数组
             this._battleField[i] = [];
             for (var j = 0; j < this._colCount; j++) {
                 // 读取地图数据，默认值：0
                 var v = (map[i] && map[i].charAt(j)) || 0;
                 // 插入span元素，一个span元素即为一个地图单位
                 var spanCol = UtilityClass.CreateE("span", "", "", divRow);
                 spanCol.className = ArrayCss[v];
                 // 将地图对象放入二维数组中，便于后面碰撞检测。
                 var to = null;
                 switch (v) {
                     case EnumMapCellType.Empty:
                         to = new EmptyB();
                         break;
                     case EnumMapCellType.Wall:
                         to = new WallB();
                         break;
                     case EnumMapCellType.Steel:
                         to = new SteelB();
                         break;
                     case EnumMapCellType.Tod:
                         to = new TodB();
                         break;
                     case EnumMapCellType.River:
                         to = new RiverB();
                         break;
                     case EnumMapCellType.Podium:
                         to = new PodiumB();
                         break;
                     default:
                         throw new Error("地图数字越界！");
                         break;
                 }
                 to.UI = spanCol;
                 //这里的j就是X，因为内部循环是横向的，x是横坐标
                 to.XPosition = j;
                 to.YPosition = i;
                 // 将当前的地图对象存入二维数组中obj为障碍物对象，occupier为占有对象
                 this._battleField[i][j] = { obj: to, occupier: null, lock: false };
             }   //end for
         }   // end for
         // 放入window全局变量
         window.BattleField = this._battleField;
     }