存儲重放數據的最佳方式

Question

我目前有一個遊戲重放文件，我正在分析並想知道存儲數據的最佳方式，以便我可以創建快速的複雜查詢。例如，每隔50毫秒，分析儀就會返回一個數據結構，在該數據結構中，您可以訪問當前圓形細節和遊戲中當前玩家狀態的快照，例如他持有什麼武器，他有多健康，他目前拍攝哪些玩家等等。我希望能夠說：從重播文件的開始到10000毫秒，玩家「邁克爾」的位置是什麼。玩家「凱爾」對其他玩家造成的傷害從10000毫秒到20000毫秒有多大。我希望能夠存儲所有數據，然後使用API​​在前端進行分析並重播，以便您可以在視覺上重放它。 （Round 1，StartTime：10000，EndTime：30000），（Round 2，StartTime：31000，EndTime：37000）。我可以將有關重播的元數據存儲到數據庫中。我還可以存儲關於一名玩家何時被殺的元數據（Kyle，DeathTime：31000，KilledBy：Micheal）或者一名玩家受傷（Kyle，HurtBy：Micheal，Damage：10，Weapon：x）。

爲了完成我想要爲不同情況創建複雜查詢所要做的事情，我是否需要兩者的組合？比如像毫秒數據庫/文件那樣以毫秒數據存儲毫秒數據，然後解析總文件並將第二段中提到的元數據存儲到另一個數據庫中。僅以毫秒數據存儲毫秒數據，然後是否有能力創建快速查詢來解析我想要的數據？

Answer 1

聽起來像一個很酷的遊戲，你正在努力。 Microsoft Azure Table Storage（NoSQL數據庫）速度非常快，對你的遊戲來說非常完美。您可以使用包含查詢語言（自定義LINQ提供程序）並且還將數據存儲在Azure表存儲中的Slazure（我編碼的Slazure BTW）。如果我爲你的遊戲使用Slazure和Microsoft Azure Table Storage NoSQL數據庫，我會這樣做。我建議你將在PlayersTable表中存儲一行，其中PartitionKey是玩家名稱，而RowKey是遊戲回合的多少毫秒 - 因爲每個表都在PartitionKey列上索引並且按排序RowKey列使用這些列的所有查詢確實非常快。還有爲使用的武器創建的列，屏幕上的位置，健康狀況，圓號以及哪個玩家被誰殺死。你可以創建一個表使用下同提出的方法來保存數據的破壞：

using SysSurge.Slazure; 
using SysSurge.Slazure.Linq; 
using SysSurge.Slazure.Linq.QueryParser; 

namespace TableOperations 
{ 
    public class PlayerInfo 
    { 
     // List of weapons 
     public enum WeaponList { 
      Axe, Arrow, Knife, Sling 
     }; 

     // Update a player with some new data 
     public void UpdatePlayerData(dynamic playersTable, DateTime gameStartedTime, int round, string playerName, WeaponList weapon, int healthPoints, int xPos, int yPos) 
     { 
      // Create an entity in the Players table using the player name as the PartitionKey, the entity is created if it doesn't already exist 
      var player = playersTable.Entity(playerName); 

      // Store the time the event was recorded for later as milliseconds since the game started. 
      // This means there is one row for each stored player event 
      player.Rowkey = ((DateTime.UtcNow.Ticks - gameStartedTime.Ticks)/10000).ToString("d19"); 

      player.Round = round; // Round number 
      player.Weapon = (int)weapon; // Weapon carried by player. Example Axe 

      // Store player X and Y position coordinates on the screen 
      player.X = xPos; 
      player.Y = yPos; 

      // Number of health points, zero means player is dead 
      player.HealthPoints = healthPoints; 

      // Save the entity to the Azure Table Service storage 
      player.Save() 
     } 

     // Update a player with some new data 
     public void PlayerKilled(dynamic playersTable, DateTime gameStartedTime, int round, string playerName, string killedByPlayerName) 
     { 
      // Create an entity in the Players table using the player name as the PartitionKey, the entity is created if it doesn't already exist 
      var player = playersTable.Entity(playerName); 

      // Store the time the event was recorded for later as milliseconds since the game started. 
      // This means there is one row for each stored player event 
      player.Rowkey = ((DateTime.UtcNow.Ticks - gameStartedTime.Ticks)/10000).ToString("d19"); 

      player.Round = round; // Round number 

      // Number of health points, zero means player is dead 
      player.HealthPoints = 0;  

      player.KilledByPlayerName = killedByPlayerName; // Killed by this player, example "Kyle" 

      // Save the entity to the Azure Table Service storage 
      player.Save() 
     } 

     // Get all the player positions between two time intervals 
     public System.Linq.IQueriable GetPlayerPositions(dynamic playersTable, string playerName, int fromMilliseconds, int toMilliseconds, int round) 
     { 
      return playersTable.Where("PrimaryKey == @0 && RowKey >= @1 && RowKey <= @2 && Round == @3", 
       playerName, fromMilliseconds.ToString("d19"), toMilliseconds.ToString("d19"), round).Select("new(X, Y)"); 
     }  

    } 
} 

首先，你需要記錄當比賽開始和回合數：

var gameStartedTime = DateTime.UtcNow; 
var round = 1; // Round #1 

，並創建一個表在NoQL數據庫：現在

// Get a reference to the Table Service storage 
dynamic storage = new DynStorage("UseDevelopmentStorage=true"); 

// Get reference to the Players table, it's created if it doesn't already exist 
dynamic playersTable = storage.Players; 

，在遊戲過程中，你可以不斷地像這樣更新播放器的信息：

UpdatePlayerData(playersTable, gameStartedTime, round, "Micheal", WeaponList.Axe, 45, 12313, 2332); 
UpdatePlayerData(playersTable, gameStartedTime, round, "Kyle", WeaponList.Knife, 100, 13343, 2323); 

如果你需要等待50毫秒，你可以這樣做的每個存儲事件之間：

System.Threading.Thread.Sleep(50); 

，然後存儲一些玩家事件數據：

UpdatePlayerData(playersTable, gameStartedTime, round, "Micheal", WeaponList.Axe, 12, 14555, 1990); 
UpdatePlayerData(playersTable, gameStartedTime, round, "Kyle", WeaponList.Sling, 89, 13998, 2001); 

當的一個玩家已經死了，你可以用同樣的方法調用零點生命值和殺死他/她的玩家的名字：

PlayerKilled(playersTable, gameStartedTime, round, "Micheal", "Kyle"); 

現在，在你隨後的比賽分析，你可以查詢所有從遊戲開始（0毫秒）的位置到10000毫秒進入遊戲如下：

// Get a reference to the table storage and the table 
dynamic queryableStorage = new QueryableStorage<DynEntity>("UseDevelopmentStorage=true"); 
QueryableTable<DynEntity> queryablePlayersTable = queryableStorage.PlayersTable; 

var playerPositionsQuery = GetPlayerPositions(queryablePlayersTable, "Micheal", 0, 10000, round); 

// Cast the query result to a dynamic so that we can get access its dynamic properties 
foreach (dynamic player in playerPositionsQuery) 
{ 
    // Show player positions in the console 
    Console.WriteLine("Player position: Name=" + player.PrimaryKey + ", Game time MS " + player.RowKey + ", X-position=" + player.X + ", Y-position=" + player.Y; 
}