UE4 多模块的插件（自定义动画节点的补充）

之前做的自定义动画节点被分成了两个模块。
一个是动画节点功能的实现，Runtime模块，也就是MultiModifyCurveAnimNode。
另一个就是动画的蓝图节点，Editor模块，MultiModifyCurveAnimNodeEditor，在这个模块内实现的UMultiModifyCurveAnimGraphNode以用于在蓝图内展示蓝图节点。

创建另一个模块

我这边是直接复制的当前模块的文件夹，修改对应的文件名和各类类名。
最终文件结构如下
alt 界面

除了各个类结构的更名之外有几点要注意

两个模块的Build.cs文件的修改
runtime模块内不能引用editor的模块

     PublicDependencyModuleNames.AddRange(
     new string[]
     {
         "Core"
         // ... add other public dependencies that you statically link with here ...
     }
     );
		
	
 PrivateDependencyModuleNames.AddRange(
     new string[]
     {
         "CoreUObject",
         "Engine",
         // "Slate",
         // "SlateCore",
         // ... add private dependencies that you statically link with here ...	
     }
     );

editor模块可以引入所需要的其他editor模块。

 PublicDependencyModuleNames.AddRange(
 new string[]
 {
     "Core",
     "AnimGraph",
     "BlueprintGraph",
     "MultiModifyCurveAnimNode"
     // ... add other public dependencies that you statically link with here ...
 }
 );
	

 PrivateDependencyModuleNames.AddRange(
 new string[]
 {
     "CoreUObject",
     "Engine"//,
     // "Slate",
     // "SlateCore",
     // ... add private dependencies that you statically link with here ...	
 }
 );

修改复制出来的IMPLEMENT_MODULE宏

// MultiModifyCurveAnimGraphNodeModule.cpp
IMPLEMENT_MODULE(FMultiModifyCurveAnimGraphNodeModule, MultiModifyCurveAnimNodeEditor)

修改插件的uplugin
```
 {
 "FileVersion": 3,
 "Version": 1,
 "VersionName": "1.0",
 "FriendlyName": "MultiModifyCurveAnimNode",
 "Description": "支持使用TMap<TName,float>做变形动画，内置映射表。",
 "Category": "Other",
 "CreatedBy": "Meteoc",
 "CreatedByURL": "",
 "DocsURL": "",
 "MarketplaceURL": "",
 "SupportURL": "",
 "CanContainContent": true,
 "IsBetaVersion": false,
 "IsExperimentalVersion": false,
 "Installed": false,
 "Modules": [
     {
         "Name": "MultiModifyCurveAnimNode",
         "Type": "Runtime",
         "LoadingPhase": "PreLoadingScreen"
     },
     {
         "Name": "MultiModifyCurveAnimNodeEditor",
         "Type": "UncookedOnly",
         "LoadingPhase": "PreLoadingScreen"
     }
 ]
 }
```
IMPLEMENT_MODULE 是用于导出DLL给其他模块使用 这个Name ： MultiModifyCurveAnimNodeEditor和build.cs文件名和build.cs的类名严格匹配 重点在于这个”Type”: “UncookedOnly”。Type如果为Editor，编辑器会警告，如果是runtime则会在打包时报错。UncookedOnly则在Cook时跳过这个模块。以下是各类Type含义
```C#
- Environment that can load a module. */ namespace EHostType { enum Type { // Loads on all targets, except programs. Runtime, //Runtime模式下会去加载
  
  // Loads on all targets, except programs and the editor running commandlets. RuntimeNoCommandlet, //Runtime模式, 不包含命令
  
  // Loads on all targets, including supported programs. RuntimeAndProgram, //Runtime模式, 小程序
  
  // Loads only in cooked games. CookedOnly, //和Cook资源相关
  
  // Only loads in uncooked games. UncookedOnly, //只在没有cook过的程序中加载
  
  // Deprecated due to ambiguities. Only loads in editor and program targets, but loads in any editor mode (eg. -game, -server). // Use UncookedOnly for the same behavior (eg. for editor blueprint nodes needed in uncooked games), or DeveloperTool for modules // that can also be loaded in cooked games but should not be shipped (eg. debugging utilities). Developer, //开发模式下加载,兼容老版本留下来的枚举
  
  // Loads on any targets where bBuildDeveloperTools is enabled. DeveloperTool, //开发模式下加载新的枚举
  
  // Loads only when the editor is starting up. Editor, //Editor模块
  
  // Loads only when the editor is starting up, but not in commandlet mode. EditorNoCommandlet, //Editor非命令行加载
  
  // Loads only on editor and program targets EditorAndProgram, //Editor小程序
  
  // Only loads on program targets. Program, //独立程序
  
  // Loads on all targets except dedicated clients. ServerOnly, //服务端模块
  
  // Loads on all targets except dedicated servers. ClientOnly, //客户端模块
  
  // Loads in editor and client but not in commandlets. ClientOnlyNoCommandlet, //客户端没有命令行的模块
  
  //~ NOTE: If you add a new value, make sure to update the ToString() method below! Max //如果新加枚举的话别忘了把这个Namespace中的tostring方法完善一下 };
```