hello.

I want to make my game using Unity, i do not know programming well so i will hire programmers to do the job.

I am going to hire people but problem is that they won't work more then a few weeks. After they will write certain game features they may leave (they will work part time and for few weeks).

So i want to know if i can work in such conditions when programmer arrives writes for few weeks and then leaves. Can i connect all codes written by different programmers? I know little bit of programming but have no experience. Can you share your experience on that topic?

Thank you in advance

Can't you hire them as contractors and have the contracts specify the time period so that leaving before a set date would be a breach of contract?

I also think you should ask yourself why they are/would be leaving after a few weeks?

To answer your question, if the game is somewhat technically challenging it will be difficult for you to “connect” (actually called integrate) the code. Even experienced programmers struggle when asked to integrate code form a bunch of different programmers that didn't talk to each other and set up sensible APIs.

If it’s properly object-oriented, then the new programmer can treat it as a black box, already unit tested.

but what’s with the employee turnover? Not even McDonald’s has a turnover rate like that.

taby said:
If it’s properly object-oriented, then the new programmer can treat it as a black box

Won't work. The problem with OOP is: Despite the ambitious goal to have a nice hierarchy of abstractions over functionality, in practice you have no idea about the state of the data in all your classes.
To get this idea you have to dig through all the code regardless of using OOP, which is actually easier if you're not using OOP.
This, plus the fact that a tree shaped hierarchy is hard to design, if what you really want is a flexible (but unordered) graph, are the big reasons games moved from OOP to ECS. (If it makes sense to compare those.)

Til yet there is no general agreement over what's the best programming paradigm, language, etc. So a new programmer has to learn whatever custom solutions and hacks the new code base has piled up.

Let me tell you that, in my experience, your expectations are unrealistic, programmers won't code for free, so first thing first , try to get some budget, second, why are you preventing they will leave ? third hire a tech lead and / or a project manager. You do not have exp in programming , but maybe you have a silent talent in project management ? give it a try , if this is your first game, do not expect to create a masterpiece, try to get as much experience as you can, a leader with no experience in anything won't be much impressive, and employees (sp??) need a ‘father’ figure

I'm not clear why you expect to hire programmers for such a short time? That is unusual. What is your reason for doing so? It would make more sense to hire the same programmer(s) to do work over a longer period. Since you lack technical knowledge it will be important to hire a lead programmer to work with any other programmers and help structure the project and integrate the work from the other programmers as well as assess how technically feasible and/or difficult the code is, and work to develop reasonable time estimates.