Unreal Engine插件打包技巧

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1. 打开UE工程，点击编辑，选择插件，点击"打包"按钮，选择输出目录
   
2. UE4.26版本打包提示需要VS2017问题解决

   1）用记事本打开文件【UE4对应版本安装目录\Epic Games\UE_4.26\Engine\Build\BatchFiles\RunUAT.bat】

   2）搜索【%UATExecutable% %* %UATCompileArg%】并删除本行

   3）在本行添加【%UATExecutable% %* -VS2019=true %UATCompileArg%】

   4）保存并关闭文件

   5）重启UE4并打包插件

3. 编译比较严格，需要看报错提示补充类的前置申明以及头文件引用

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   //head文件 #include "CoreMinimal.h" #include "Subsystems/GameInstanceSubsystem.h" #include "Runtime/Online/HTTP/Public/Http.h" #include "Engine/EngineTypes.h" #include "VRVIUOnlineGameSubsystem.generated.h" class FJsonObject; //cpp文件 #include "VRVIUOnlineGameSubsystem.h" #include "Kismet/GameplayStatics.h" #include "SocketSubsystem.h" #include "Engine/World.h" #include "TimerManager.h" #include "Serialization/JsonReader.h" #include "Serialization/JsonWriter.h" #include "Serialization/JsonSerializer.h"

4. 把打包好的插件，拷贝到工程plugins目录下，删除private源码文件夹，修改".Build.cs"文件，添加编译条件bUsePrecompiled 

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   public class MultiPlayerPlugin : ModuleRules {     public MultiPlayerPlugin(ReadOnlyTargetRules Target) : base(Target)     {         bEnableUndefinedIdentifierWarnings = false;         PCHUsage = ModuleRules.PCHUsageMode.UseExplicitOrSharedPCHs;         bUsePrecompiled = true;         PublicIncludePaths.AddRange(             new string[] {                 "MultiPlayerPlugin/Public"             }             );                                     PrivateIncludePaths.AddRange(             new string[] {                               }             );                                 PublicDependencyModuleNames.AddRange(             new string[]             {                 "Core"                 // ... add other public dependencies that you statically link with here ...             }             );                                 PrivateDependencyModuleNames.AddRange(             new string[]             {                 "CoreUObject",                 "Engine",                 "Slate",                 "SlateCore", "UMG", "Http", "Json", "JsonUtilities", "Sockets", "Networking"                 // ... add private dependencies that you statically link with here ...              }             );                             DynamicallyLoadedModuleNames.AddRange(             new string[]             {                 // ... add any modules that your module loads dynamically here ...             }             );     } }

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