uFrame 1.6杂乱笔记与一些翻译

The Kernel
The Kernel是uFrame的本质，负责处理加载场景，系统和服务。

Subsystems
作为一个容器，组成许多Nodes。
Subsystems允许你分离项目中的逻辑部分和可复用部分。
System Loaders
System Loaders常用语初始化信息。

Node
Elements

• 主要负责ViewModel(Unity中uFrame框架附带了Controller)部分
  For example, Player element could contain information about player properties like health, running speed, obtained weapons or
  actions; Shoot, TakeDamage or Die.
  一个Elements会创建对应的ViewModel和Controller类
  

• Inheritance(继承)

  如下图，可以连接两个elements，后者继承前者。 SettingsScreen Element will contain the IsActive property and Close command of its parent SubScreen.

Views

• 游戏中的表现层(数据来源与绑定ViewModel)。
  For instance, a PlayerView should probably exist on some kind of Player GameObject, and a PlayerHUDView should probably exist on some
  kind of GUI GameObject to bind to and express a player’s stats and
  other properties.

• Important Methods(可以重写)
  All Views inherit from a ViewBase class. Here are the most important methods. You can override all of them.
  InitializeViewModel()
  View匹配ViewModel时的一些初始化。不勾选Initialize ViewModel则不被执行。
  PreBind()
  This happens before the View begins creating bindings to its given ViewModel.
  Bind()
  This is where the View actually creates property bindings, collection bindings, and command bindings to the given ViewModel. The base.Bind() call will automatically create the bindings specified in the uFrame diagram for this specific View type.If you have any further manual bindings you need to do, this can be agood place to implement them.
  AfterBind()
  This is called immediately after the View creates bindings to its ViewModel.

• Inspector options
  ViewModel Indentifier 关联的ViewModel的标识，可指定。
  Dispose On Destroy 若勾选上， View被销毁是，ViewModel也被销毁。
  Initialize ViewModel 是否自己来初始化ViewModel属性值。

• Bindings
  每一个绑定都会生成对应的方法在ViewBase类里。
  有一些方法(TODO)

• Execution Order
  For Views instantiated at runtime
  Awake > OnEnable > PreBind > Bind > AfterBind >InitializeViewModel > Start > Update loop begins
  For Views existing “SceneFirst” before runtime
  Awake > OnEnable > CreateModel > InitializeViewModel > Start (before base call) > PreBind > Bind >AfterBind > Start (after base call)
  When Destroying an object
  OnDisable > OnDestroy (before base.OnDestroy() call) >UnBind > OnDestroy (after base.OnDestroy() call)

View components

• 用于扩展View的功能(一些方法)。
  看例子：
  https://github.com/InvertGames/uFrame.Documentation/blob/master/uFrameMVVM/pages/nodes/view-component-node.md

Enums

• 用于定义新的属性类型给Elements使用。

Scene Types

• 为了使用uFrame加载/卸载场景，必须使用Scene Types创建以便于给uFrame识别。
  可以定义怎样加载/卸载场景。
  可以多个场景共用一个Scene Types(有什么意义？案例中的选择关卡，多个关卡场景共用一个Scene Types)

• Scene Types存在在一个场景的游戏入口，因为uFrame需要知道哪些场景被加载和保存 场景的引用，在需要移除场景时。

• Scene Type Settings
  可以使用它来pass data给场景加载。

• Generated Scene Types Scene Type是mono behaviour。让uFrame关联监听场景(当场景加载或被卸载时)。

• Scene Loader
  一个Scene Type生成一个Scene Loader，交给uFrame Kernel管理。
  专门负责对应的Scene Type加载/卸载的一些功能。
  LoadScene() 对应 Unity’s LoadSceneAdditively()
  UnloadScene() 对应 the scene root game object is destroyed

• Execution Order
  When you enter play mode, first executed will be the Start() method which is responsible for loading the kernel. You can override
  the KernelLoading() method to execute custom code before the kernel
  starts loading and the KernelLoaded() to execute custom code after
  the kernel finish loading.
  After the kernel is loaded, a SceneAwakeEvent is published. Read more in the Events page.
  SceneManagementService will receive this event, find a Scene Loader for the Scene Type and call its Load() coroutine.

Service Node

• Service也是交给uFrame Kernel管理。
  可以写一些Commands和Events让Service订阅。
  字面上的意思，提供一些服务给其他节点。

Simple Classes(看文档)

• 自定义的类。
  可作为Element的属性和command的参数。

Type References(看文档)

• 可以指定新的类型在其他Nodes使用。
  不会被uFrame生成，要自己创建。
  一般在services配合handlers使用(大概)。

• 自定义类型，不被uFrame创建

Command Node

• 能被事件系统订阅。
  一般用来传递数据给Controller。

Computed Properties

• 根据properties来计算得出另一些属性。比如血量少于0则得出死亡属性。

Element

• ViewModels当需要时存在内存中。如果运行时View存在在场景中，它将会执行ViewCreatedEvent，ViewService将会匹配指定绑定的ViewModel，如果不存在则创建。大概只存在一个。

• Creation And Initialization
  Creating a ViewModel with the Extension Method 在uframe 1.6中是通过额外的方法(使用正确的controller)创建ViewModel this.CreateViewModel()

Designer Overview

• For instance, a PlayerView should probably exist on some kind of
  Player GameObject, and a PlayerHUDView should probably exist on some
  kind of GUI GameObject to bind to and express a player’s stats and
  other properties.