UE4 UE5虚幻引擎插件开发制作和打包发布

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课程介绍

插件是开发者可在编辑器中逐项目启用或禁用的代码和数据集合。插件可添加运行时gameplay功能，修改内置引擎功能（或添加新功能），新建文件类型，及使用新菜单、工具栏命令和子模式扩展编辑器的功能

插件剖析

含有代码的插件包含Source文件夹。此文件夹将包含一个或多个目录，其中包含插件的模块源代码。注意：插件常包含代码，但并非必要条件。参见插件中的代码章节，了解更多信息。

含代码的插件拥有包含该插件编译后代码的 Binaries 文件夹，而临时版本产品文件将另存在插件目录中的 Intermediate 文件夹中。

插件可拥有自己的Content文件夹，其中包含特定于该插件的资源文件。参见插件中的内容章节，了解更多信息。插件配置文件应使用和其他配置文件相同的规则放置：

引擎插件：[PluginName]/Config/Base[PluginName].ini
游戏插件：[PluginName]/Config/Default[PluginName].ini

插件文件夹

为便于查找插件，须将其放置在项目中或引擎本身中的插件搜索路径。


插件类型	搜索路径
引擎	/[UE4根目录]/Engine/Plugins/[插件命名]/
游戏	/[项目根目录]/Engine/Plugins/[插件命名]/

也可将插件整理到基础Plugins文件夹下的子目录中。引擎将扫描基础Plugins文件夹下的所有子文件夹，查找要加载的插件，但不会扫描已找到插件下的子目录。

虚幻引擎通过在磁盘上搜索 .uplugin 文件来查找插件。将此类文件称为 插件描述文件。其是提供插件相关基本信息的文本文件。运行此类程勋时，引擎、编辑器和 UnrealBuildTool（UBT）将自动发现并自动加载插件描述文件。参见插件描述文件章节，了解创建和自定义此类文件的方法。

插件中的代码

生成Visual Studio或Xcode的项目文件时，含有 Source 文件夹（包含 .Build.cs 文件）的插件将被添加到项目文件，以便导航到其源代码。编译游戏项目时，UBT将自动编译此类插件。

插件可含有任意数量的模块源目录。多数插件仅有一个模块（但可创建多个模块，例如插件包含纯编辑器功能时），及游戏期间要运行的其他代码。

插件源文件的大部分布局与引擎中其他C++模块相同。

在模块的 Source 目录（或其子目录）内，插件可在标头文件中声明新反映的类型（UCLASS、USTRUCT 等）。引擎的构建系统将检测此类文件，并按需要生成代码支持新类型。需遵守C++模块中使用 Uobjects 时的一般规则，例如在模块的源文件中包含生成的标头文件和模块 generated.inl 文件。

课程持续更新中...

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