Allow multiple researchers to research one technology.

[Freagarach]

Allow multiple researchers to help researching one technology (with diminishing returns perhaps).

Why: This allows for more depth in the game.

How: Storing a technology object in TechnologyManager's (TM) with:

• Total technology points (TP) needed for the tech.
• Current TP invested in the tech.
• Researchers.
• Maximum amount of researchers

Having a Researcher (refs. #6363) with a TP/time that does work in the TM.

One can let the techs be persistent, so that even when the last researcher has stopped, the progress is still saved.

Caveats: How to handle (re)funding? Every researcher pays the same amount? But how to handle stopping one researcher when work has been done?

• Funding: E.g. a percentage of the total has to be paid. If the tech is already 40% compleat, a new researcher pays only 60%.
• Refunding: E.g. on every update a part (relative to the TP used) of the resources is 'consumed', i.e. removed from the item. What is left is refunded on stop.

[Freagarach]

I'm working on step one: Splitting the research part from the ProductionQueue to a separate Researcher component.

[Freagarach]

In 26000:

Split tasks from ProductionQueue.

The task of the production queue should first and foremost be that; a queue for production items.
Hence, the specifics of training/researching are delegated to specific components.

As a side effect, this improves the test coverage and fixes:

• Resource not refunding when hitting the entity limit. Introduced in r25753 / rP25753.
• Autoqueue changing when unable to spawn. Introduced in r25779 / rP25779.

Modders can change their templates using ​https://code.wildfiregames.com/P256.

Differential revision: ​https://code.wildfiregames.com/D4333
Fixes: #6363
Comments by: @Silier
Refs. #6364

[Freagarach]

Step two: handling all tech stuff in the technologymanager: ​Phab:D4438.

[Freagarach]

In [26252]:

Handle researching technologies in the TechnologyManager.

Moves the work done from cmpResearcher to cmpTechnologyManager. No functional changes.

It allows fancy stuff in the future (#6364).

Differential revision: ​https://code.wildfiregames.com/D4438

[Stan]

Unlikely to get done for A26

[Freagarach]

Pushing back.