What do I need to do to get this C# code to work in Unity?

Question

Help me!! i've just started a cert IV in Digital and Interactive Games and i'm really stumped on something. The video I've been given to watch is using an older version of Unity which included MonoDevelop. As I understand it MonoDevelop is no longer packaged with the windows version of Unity (correct me please if i'm wrong), so my default IDE is Visual Studio 2017. the only problem now is that the Vector2 doesn't work properly because Visual Studio doesn't recognise it as code. I've also noticed that it doesnt recognise the 'screen' phrase and the <camera> phrase (inside a getComponent function). do I need to change something in the 'using' code at the top of the scaffolding script? I'm sorry for not really being able to word my question well but like I said I've literally just started my course and barely know what I'm doing. I really need someone to help me out here and any help you can give me would be really appreciated!

TLDR; using visual studio instead of MonoDevelop and now code isn't being recognised.

Answer 1

Hi Jordan,

I have experienced this issue as well. To solve it I installed the "Unity support for Visual Studio" package. Here are the steps I used to fix this:

1. Download the Visual Studio installer, or run it if already installed.
2. Click Modify (if already installed) or Install (for new installations) for your desired version of Visual Studio.
3. On the Workloads tab, scroll to the Gaming section and select the Game development with Unity workload.

You may also need to configure unity to use Visual Studio:

1. In the Unity Editor, select the Edit > Preferences menu..
2. Select the External Tools tab on the left.
3. The External Script Editor dropdown list provides a way to choose different installations of Visual Studio. You can also click Browse... from the dropdown list to add an unlisted version.
4. 
5. If Browse... was selected, navigate to the Common7/IDE directory inside your Visual Studio installation directory and select devenv.exe. Then, click Open.
6. Once Visual Studio is selected in the External Script Editor list, confirm that the Editor Attaching checkbox is selected.
7. Close the Preferences dialog to complete the configuration process.