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POGame player object design
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copied!<p>I'm supporting a server for an online card game and while thinking about refactoring it into a better state I have found myself unable to decide what is a proper object model for my needs.</p> <p>I have a Player class which has a lot of attributes. The first problem is just that - the class is too big. The second problem is that I don't know how to refactor it. I will list some of the attributes and issues with these.</p> <p>Some attributes are very tightly bound to a player: nick, email, last login &c. These, I suppose, are to be kept directly in the player class and in the same table in the DB.</p> <p>Now, some attributes are a little more difficult, like money and gold amount. The problem with these is that they are historically stored in a different table, there might be some more currencies later on and that they MUST be synched into the database at their own pace.</p> <p>Third category of attributes are loosely coupled to the player, like status string, experience, achievements, statistics &c. These are stored in different tables in the DB and MUST be stored, retrieved, cached and synchronized at their own pace.</p> <p>Note that one of the big problems here is that we have to implement relatively complex database synchronization schemes because we have a lot of online players and our game is soft-realtime and we have to make load on the DB as low as possible.</p> <p>My questions are: </p> <ol> <li>How to determine which attributes to store within a player class and which not to? Say, experience, nickname, money amount?</li> <li>When one has some attributes that may be grouped together like (strength, agility, endurance, &c.) and (handItem, headItem, feetItem, weapon) when they should be grouped and when not? </li> <li>What to do with complex database synchronization schemes? Make a separate model for each attribute that needs to be synched independently or make some DataManager classes to take them apart and work with them?</li> <li>What to do with the need for a class to have several different "data representations" for external consumers? Like XML, Json, another XML for some external service, human-readable string, &c.</li> </ol> <p>I'm sorry if my questions are bogus, I'm not really good at OOP design, I'm more an FP guy. And my English is not very good =).</p>

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