After adding C++ code Unreal Editor must be restarted ?

Development Programming & Scripting C++
1

Hi guys,

I follow the official get started tutorial on program. Does it mean every time i modify c++ code in visual studio, i should restart unreal editor?   If so , compared with Unity3d,  it`s slower.
2

If you add new variables to a class, you will need to restart the game/editor after recompile. If you make smaller changes, for example just changing the body of a function, you can use the Compile button in the editor and do not need to restart. We are currently working to improve programmer iteration time in both cases.

3

Am i reading this wrong? That seems crazy.

4

This does sound very funny indeed. Feels like you need to peddle on a dynamo bike before you can shoot the photon canon Oo

5

You are reading it correct. Hot Reloading is only really useful when you are making subtle tweaks to algorithms and or variable values. If you modify or add a class the resulting files are not going to provide the same API and need to be reloaded into UE4. If you are interested in the details on why this is a complicated problem to solve you can check out posts like these on Stack Overflow: hot reload - How can one implement hot-swappable C++ modules? - Game Development Stack Exchange

6

I believe PIMPL idiom would reduce the number of restarts.

7

It’s the same on CryEngine too.