Windows下AirSIM的环境搭建（三、Build Unity示例项目及资源）

Unity

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Build Unity Project

Go inside the AirSim\Unity directory: cd Unity.

Build the unity project: build.cmd.

Additionally, there is a free environment Windridge City which you can download from Unity Asset Store. And, of course, you can always create your own environment.

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Build

出错，应该是VS2017缺少组件 Windows SDK 10.0.16299.0，这个版本的组件有四个，我只安装了如下两个


这个warning不用管，至此就build完成了，生成了AirLibWrapper插件。

Windridge City

在Unity Asset Store中购买（免费）该资源后，用unity打开，开始下载。


下载完成后，导入即可

第一次使用，当然是全部导入啦

导入完成后，场景是这样的，很棒

但是好像有编译错误，不能直接运行

在源码中有如下解释

 // NOTE: If you are getting errors of the sort that say something like:
 //     "The type or namespace name `PostProcessing' does not exist in the namespace"
 // it is because the Post Processing Stack V2 module has not been installed in your project.
 //
 // To make the errors go away, you can either:
 //   1 - Download PostProcessing V2 and install it into your project
 // or
 //   2 - Delete the CinemachinePostProcessingV2 folder from your project

postprocessing的wiki-install说明文档如下

First, make sure you don't already have the Postprocessing package installed or it will conflict 
with a source installation. If you do, you can remove it using the package manager (Window -> Package Manager).

Then you can use your Git client to clone the post-processing repository into your Assets folder. 

If you don't want to use a Git client you can also download a zip archive by clicking the green 
button that says "Clone or download" at the top of the repository and extract it into your project. 

在window->package manager里，也有安装的方法

将下载好的postprocessing解压缩到project-asset目录下，等待unity加载完新资源，此时error就没了。
运行当前场景，移动鼠标可以环视四周，安装postprocessing之后，就能看到视觉特效啦。

示例项目

Usage

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Start Unity and click Open project.
Select the folder AirSim\Unity\UnityDemo, and then hit the button Select Folder.
In the bottom pane, Click on Projects->Assets->Scenes. Then, Double-click on SimModeSelector, DroneDemo, or CarDemo.
Hit the play button to start the simulation (and hit play again to stop the simulation. .
Alternatively, you can change the SimMode in your Settings.json file. (you can read more about it here)

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打开项目，双击打开SimModeSelector场景。(如果直接打开另外两个场景去运行，编辑器会崩溃)
直接play，会读取Settings.json

我这里没有这个路径，所以生成失败，到"C:\Users\name\Documents"目录下创建"AirSIM"文件夹，再次点击play，即成功运行场景。
如未在Settings.json中设置仿真模式，会首先弹出提示框，用于选择仿真模式。

选择Car进入CarDemo场景，仿真模拟无人车
选择Multirotor进入DroneDemo场景，仿真模拟无人机

示例项目启动完成

Operation

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Controlling the car:
Use WASD or the Arrow keys or the AirSim client.
Controlling the drone:
Use the PageUP/PageDown with WASD/Arrow keys.
Changing camera views:
Keys 0, 1, 2, 3 are used to toggle windows of different camera views.
Recording simulation data:
Press Record button(Red button) located at the right bottom corner of the screen, to toggle recording of the simulation data. The recorded data can be found at Documents\AirSim(Date of recording)

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以下为操作方式的翻译

• WASD或方向键控制Car移动
• Page UP/Page Down控制Drone上升/下落，WASD或方向键控制移动
• 0,1,2,3控制摄像机
• 从左到右分别为1，2，3控制摄像机开关，0可为反选摄像机状态
• 按下右下角的录像按钮，打开录制功能，录制的数据会保存在用户路径（C:\Users\用户名\Documents\AirSIM）
• 红色按钮“RE”为recording，录制短片，录制实验结果等用途。

事实上，在源码里，我没找到怎么控制无人机，这里暂时留个坑不填，需要准备一下毕业开题的事情，最近会主要看神经网络…