Game Physics: Lacking Non-Functional Requirements

[Mornix]

Section 5.2 is very vague and lacking with respect to the non-functional requirements. The section could be greatly expanded.

[smiths]

Hello @Mornix. To make these issues easier to address, could you include more information? What is the title of section 5.2? What are some examples of missing non-functional requirements. What else should be added? If it makes sense, this issue could be split into multiple issues.

[Mornix]

(Issue #29)

The Game Physics SRS mentions which nonfunctional requirements (Section 5.2) are a priority, but never details what the requirements for those categories are.

For example:

• Performance: What are the performance requirements? My thoughts would be something along the lines of "Compute a simulation x rigid bodies with no step taking more than y milliseconds on hardware. Where hardware may be something similar to "Minimum Requirements" specified when purchasing a game.
• Understandability: What is this with respect to? Is this the understandability of the API and use of the library? Is this the understandability of the implementation? How is this measured?
• Portability: What is meant by portability? Is this the set of standards this should adhere to? Perhaps some version of POSIX? What systems is this targeted to run on? Recent common operating systems? Game consoles? Mobile? To what extent should this library be portable?
• Reliability: What is reliability with respect to a game physic engine? Does that just mean the library won't cause the application to crash?
• Maintainability: How is maintainability measured or checked? What does it mean for it to be maintainable?

[smiths]

@Mornix, please add the nonfunctional requirements that you have mentioned to the SRS. This would improve the documentation. In some cases you mention the NFRs, but include questions on how they are measured or checked. If you could make an attempt at how they might be written as requirements, that would be great. We can review as you go along. We don't have to have perfect NFRs, but you have noticed a weakness in the original documentation that should be improved upon.

Once the new NFRs are in place, we will have to create another issue to port these changes to the Drasil version of the Game Physics SRS.