# 创建地图

#### 安装地图扩展工具

  在 **window > package manager** 搜索 **terrain tools** ，安装地图编辑器扩展工具

- 下载资源包
  - <https://assetstore.unity.com/packages/3d/environments/landscapes/terrain-sample-asset-pack-145808>
  - <https://assetstore.unity.com/packages/2d/textures-materials/nature/grass-flowers-pack-free-138810>


#### 增加地图

**GameObject > 3D Object > Terrain**

[![](https://iovhm.com/book/uploads/images/gallery/2024-09/scaled-1680-/kx4dxzcvpumUyWGI-image-1725732579273.png)](https://iovhm.com/book/uploads/images/gallery/2024-09/kx4dxzcvpumUyWGI-image-1725732579273.png)


#### 对地图进行设置

3d里面并没有一个固定的单位，有的仅是相对单位，例如一个立方体的高度为1，假设一个人的身高大约2米，可以根据此来换算地图的大小，地图的默认大小是1000，太大的地图消耗性能

[![](https://iovhm.com/book/uploads/images/gallery/2024-09/scaled-1680-/X4UhNk4GUQ4tALoE-image-1725710223329.png)](https://iovhm.com/book/uploads/images/gallery/2024-09/X4UhNk4GUQ4tALoE-image-1725710223329.png)

  terrain width:地图宽，X方向大小
  terrain lenght:地图的长，Y方向大小
  *terrain height：视乎并没有用*

#### 使用地形工具进行绘制


  - Set Height：将高度贴图调整为特定值。将地形整体设置高度20，否则后期地形凹陷没有效果

  - Raise or Lower Terrain：使用画笔工具绘制高度贴图。按shift是负方向，既凹陷例如池塘

  [![](https://iovhm.com/book/uploads/images/gallery/2024-09/scaled-1680-/CDlViOdC7A2EYpNx-image-1725710917333.png)](https://iovhm.com/book/uploads/images/gallery/2024-09/CDlViOdC7A2EYpNx-image-1725710917333.png)

  - Paint Holes：隐藏地形的某些部分，挖洞，例如山洞
  - Smooth Height：平滑高度贴图以柔化地形特征。
  - Paint Texture：应用表面纹理

    第一张贴图是作用域全部，所以一般第一张选择沙石或者草地，后面张才可以自己绘制

  - Stamp Terrain：在当前高度贴图之上标记画笔形状。

#### 植树

调整画刷大小和密度，密度太小可能种不下去，密度太大会选的很杂乱

[![](https://iovhm.com/book/uploads/images/gallery/2024-09/scaled-1680-/sB3R9nSfIHhn9rN2-image-1725713403466.png)](https://iovhm.com/book/uploads/images/gallery/2024-09/sB3R9nSfIHhn9rN2-image-1725713403466.png)

#### 种花

与植树大同小异，好处是可以同时种几种

[![](https://iovhm.com/book/uploads/images/gallery/2024-09/scaled-1680-/RxlVSW4O6WHtt6Ok-image-1725732042472.png)](https://iovhm.com/book/uploads/images/gallery/2024-09/RxlVSW4O6WHtt6Ok-image-1725732042472.png)


[![](https://iovhm.com/book/uploads/images/gallery/2024-09/scaled-1680-/FXqp7LJjEiL6zgCD-image-1725732237240.png)](https://iovhm.com/book/uploads/images/gallery/2024-09/FXqp7LJjEiL6zgCD-image-1725732237240.png)

#### 设置雾