public void LoadLevel(int levelNumber)
{
GameState = GameState.Loading; //设置当前游戏的状态
if (Level != null) //如果当前Level存在，通过关卡切换而来
{
/* 先取消对关卡完成事件的绑定. */
Level.LevelCompleted -= new EventHandler(Level_LevelCompleted);
}
Level = new Level(this, levelNumber); //新建一个Level
Level.LevelCompleted += new EventHandler(Level_LevelCompleted);
string levelMap; //用于保存关卡自字符的变量
if (sokobanService != null)
{ //使用sokobanService来得到关卡地图字符串
levelMap = sokobanService.GetMap(levelNumber);
using (StringReader reader = new StringReader(levelMap))
{ //调用Load方法加载关卡内容
Level.Load(reader);
}
}
else
{ //如果sokobanService没有传入，则从文件中加载关卡文件
string fileName = string.Format(@"{0}Level{1:000}.skbn",
levelDirectory, levelNumber);
using (StreamReader reader = File.OpenText(fileName))
{ //加载关卡内容
Level.Load(reader);
}
}
OnPropertyChanged("Level"); //触发关卡属性变更通知
StartLevel(); //开始指定关卡的游戏
}
