How do I use Hot-Reload?

Development Programming & Scripting C++
1

How do I use Hot-Reload? Does it make visual studio useless or not exactly?

2

How I do it:

  • Go to the .sln that contains my ue4 and game DLL
  • Set my ‘UE4’ project as my startup proj
  • Run
  • This loads the 64bit editor with the game DLL
  • Remote attach to the editor
  • Profit!
3

Do you mean open my custom project .sln and Project -> Set as StartUp Project on vs? Does that include the game DLL?

4

Yep that’s it

edit- I am assuming you’re using a solution generated following the ‘intro to programming’ video. You’ll have 2 projects in there. The UE4 project that contains the full source + your custom project source

5

Done, I build the project and nothing happens, what do you mean by Run? (new to vs)

What exactly to I remote attach to Unreal Editor and how do I do it?

6

Hit F5 to Start Debugging. That should launch the ue4 editor

7

It did, so where do I see the “Hot Reload”?

8

Hot-Reload refers to the ‘Compile’ button on the editor toolbar. This will kick off a compile of your source, and reload the resulting binaries once complete, without restarting the editor. There are limitations to what you can do and still be able to hot reload- you cannot change the class memory layout for example. Hot reload can also be invoked from the ‘Modules’ window in the editor, something we used a LOT when developing editor tool modules.

9

Oh I understand, I was under the impression there was some coding environment inside of Unreal Editor itself for some reason.

When I try to Compile in Unreal Editor I get errors, any idea what I’m doing wrong?

10

Just to be sure, does Hot-Reload works for visual studio 2013 non professional? I plan to move from osx to windows and since I can’t use xcode on windows I wanted to know if the free version of visual studio 2013 allows Hot-Reload.

11

Yes , both Visual Studio Express and Community work with Hot-Reload.

12

Ok cool thanks