数组中满足条件的项 保存到另一个数组中 并移除

var str:String = '[{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"},{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"},{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"},{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"},{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"},{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"},{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"},{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"},{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"},{"nCoins":"2000000","nLevel":1,"nPos":-1,"nickname":"guorui","username":"g858443101"}]';
//var str:String = bytes.readUTFBytes(bytes.bytesAvailable);
var obj:Array = OLDJSON.decode(str, false);
ObjectUtils.copyValues(obj,RoomPeopleInfo,GameDataMap.roomPeopleInfo);
GameInfo.instance.roomPeopleList = obj;

for(var i:int = GameInfo.instance.roomPeopleList.length-1; i > -1; i--)
{
if (GameInfo.instance.roomPeopleList[i].nPos!=-1)
{
GameInfo.instance.seatPeopleList.push(GameInfo.instance.roomPeopleList[i]);
GameInfo.instance.roomPeopleList.splice(i, 1);
}
}