类图问题(UML)
好的，所以我想制作一个游戏，但在对类图进行排序时遇到一些困难。
这适用于以下用例： 用户装备武器。 （用户只能选择解锁的武器，） 例如，如果有两种武器，其类图会是什么样子？提前致谢
ok so I want to make a game but am having some difficulty in getting the class diagram sorted.
this would be for the Use case of :
user Equips weapon. (user can select unlocked weapons only,)
what would the class diagram of this look like with 2 weapons for instance ? thanks in advance
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下面是一个示例 UML 图，对您在问题中描述的关系进行建模。请注意，该图假设玩家始终拥有至少一件解锁的武器，并且玩家始终拥有一件且仅有一件选定的武器。
Here is an example UML diagram modeling the relationships you describe in your question. Note that this diagram assumes that the player always has at least one weapon unlocked and that the player always has one and only one selected weapon.
呃，什么？你能问更具体的问题吗？
或者至少提供你已经拥有的东西？
您可能已经有了玩家和武器类别，对吧？
类玩家（您命名的用户）与名为unlockedWeapons 的武器与类武器具有多重性* 的单向关联。与名为 currentWeapon 的类武器的另一个关联，重数为 1，也是单向的。
然后，玩家类会获取一些方法，例如
equip(Weapon Weapon)，它获取武器对象，检查有效性（是否已解锁）等。是否有 2 种武器都无关紧要。如果您指的是 2 种不同类型的武器，它们是继承 Weapon 类的子类，则玩家可能仍然会与
Weapons关联以进行抽象。为此设计类图确实是 UML 建模/软件设计中最基本的事情。
Eh, what? Could you ask more specific questions?
Or at least provide what you already have?
You probably do already have player and weapon classes, right?
Class player (what you named user) with a one-way association with multiplicity * to weapons named unlockedWeapons to the class weapon. Another association to the class weapon named currentWeapon with multiplicity 1, also one-way.
Class player then gets some methods, like
equip(Weapon weapon)which gets a Weapon object, checks for validity (is it unlocked) etc.Whether it’s 2 weapons or not is irrelevant. If you mean 2 different types of weapons, which are subclasses inheriting the Weapon class, the player probably still associates with
Weaponsfor abstraction.Designing a class diagram for that is really the most basic thing to do in UML modeling / software design.