[Engine] Cleanup Store code

[kphoenix137]

No description provided.

[kphoenix137]

I think I'll submit a PR separately that changes the variable names found in stores.cpp so this PR is much easier to review.

[AJenbo]

I think you should, this one already has conflicts despite being the latest

[AJenbo]

Do your self a favor and merge master rather then rebase on it with the commits you have.

[AJenbo]

Old as in Previous?

[kphoenix137]

Sort of. Next and Previous are inverse of each other, while Old is like "Last", but not in the context of being inverse of first. I kept it as Old to prevent confusion with terminology.

[kphoenix137]

Example:

int OldScrollPos;           // Remember last scroll position
int ScrollPos;              // Scroll position
int NextScrollPos;          // Next scroll position
int PreviousScrollPos;      // Previous scroll position```

[kphoenix137]

There appears to be a critical issue with selling items. I noticed that sometimes the correct amount of gold is received, and other times the complete wrong amount is received.

EDIT: Fixed!

[AJenbo]

4 files have conflicts