> For the complete documentation index, see [llms.txt](https://docs.convai.com/api-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.convai.com/api-docs/zh/cha-jian-yu-ji-cheng/unreal-engine/guides/narrative-design/narrative-design-keys.md).

# Narrative Design 键

我们将创建一个简单场景，角色会欢迎玩家，并根据玩家当前的时间段询问他们晚上或早上过得怎么样。

1. 在 playground 中，为你的角色启用 Narrative Design，并将起始章节名称更改为 `欢迎`.<br>
2. 将以下内容添加到 Welcome 部分的 Objective 字段：\
   `当前时间段是 {TimeOfDay}。欢迎玩家，并询问他这个 {TimeOfDay} 过得怎么样。`\
   \
   请注意，在花括号中添加任意字符串后，它就会成为一个变量；而我们在这里所做的是将时间段作为变量加入，然后在 Unreal 中我们可以传入“Morning”或“Evening”这两个词，角色会据此做出相应回应。

   <figure><img src="/files/71bd9a33890d500a22c6cbafb76db8f797b15f8c" alt=""><figcaption><p><br></p></figcaption></figure>
3. 回到 Unreal，打开角色的蓝图。<br>
4. 设置 `叙事模板键` 带有一个包含相同变量名的映射的变量 `TimeOfDay` 为了演示，我们将把该值硬编码为“Morning”。<br>

   <figure><img src="/files/574a18445643b5e6a624b56ccf2e4716519171be" alt=""><figcaption><p><br></p></figcaption></figure>
5. 启动播放模式并试试看。<br>

   <figure><img src="/files/583e799e2f42f063c5c7cdc0695e7dc42bdf9828" alt=""><figcaption></figcaption></figure>
6. 不妨尝试其他场景和设置，以更好地适配你的用例。

{% hint style="info" %}

* 你可以在 Sections 和 Triggers 中使用叙事设计键功能。
* 确保变量名位于花括号内，且中间没有空格。
* 你可以在 Unreal 蓝图中动态设置、修改或清除叙事键。
  {% endhint %}


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