How much programming experience is necessary to start playing with game engines?

Flergle: How much programming experience is necessary to start playing with game engines?
I’ve only recently started programming, but there is nothing else I have ever picked up as quickly or enjoyed as much. Even so, I think I may be getting ahead of myself when I start delving into things like game engines (id4, openGL, havoc…)

What kind of things do I need to know before I can start utilizing and understanding the APIs for game engines?

Answers and Views:

Answer by oracle128au
About a year, but it also depends on your skill level with mathematics and physics.

Answer by tbshmkr
Start with these sites for fun:
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Game Programming Tutorials:
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https://www.cppgameprogramming.com/cgi/nav.cgi?page=index

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https://www.cprogramming.com/tutorial/lesson1.html
https://www.cplusplus.com/doc/tutorial/