How difficult is it to create your own game engine?

Question

Game development

What difficulties can you face when developing an engine?

Answer 1

with everyone and at once
you would at least voice the type of game

Answer 2

If you have 5+ years of experience in game development, you know how to work with directX/openGL with "handles", you are good at architecture - then in general - it's a bit complicated))
In general - depending on what you want from the "engine". They are different, and consist of different subsystems, some of which may simply be missing.

Answer 3

How difficult is it to build a car? If you do everything yourself and from scratch, it is incredibly difficult, if you take ready-made components (engine, body, etc), then it is easier. It can also be a toy car, this simplifies everything, but it can also be a smaller model, but as realistic as possible, it’s already more difficult here.
It’s also impossible to answer your question, it depends on which engine, for which games (2d, 3d, genre), how much it will be created from scratch, whether there will be support for client server games, etc.

Answer 4

Read articles:
https://habrahabr.ru/post/239751/
https://habrahabr.ru/post/233021/
https://habrahabr.ru/post/347052/

Answer 5

The only problem with a self-written game engine is lag.

Answer 6

Giant labor costs. If one - it will last indefinitely.
Once I took on a similar project. I planned to do it in 2 months, spent 2 years before the beta, and realized that there is still a lot of work to be done.