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Apart from the std::string, this function no longer uses the STL. ss_toi() is a simple function - it converts the input into an int, taking as many digits as possible until it reaches a non-digit character, at which point it stops. It's trivial to implement this without the STL. I could've used Int() here, but that would've required copying the string to a temporary buffer to insert a null-terminator (we can't just use a pointer-and-length data type either, the string functions don't operate like that - one disadvantage of C strings!). Instead, I decided to implement my own conversion to int here, because I don't think the way we humans write our Arabic numerals is going to change anytime soon. Also, the std::string input is now passed by const reference, instead of making a copy - cutting down on unnecessary memory operations.
This is the source code to VVVVVV, version 2.0+. For more context about this release, see the announcement on Terry's blog!
License
VVVVVV's source code is made available under a custom license. See LICENSE.md for more details.
In general, if you're interested in creating something that falls outside the license terms, get in touch with Terry and we'll talk about it!
Authors
- Created by Terry Cavanagh
- Room Names by Bennett Foddy
- Music by Magnus Pålsson
- Metal Soundtrack by FamilyJules
- 2.0 Update (C++ Port) by Simon Roth
- 2.2 Update (SDL2/PhysicsFS/Steamworks port) by Ethan Lee
- Beta Testing by Sam Kaplan and Pauli Kohberger
- Ending Picture by Pauli Kohberger
Versions
There are two versions of the VVVVVV source code available - the desktop version (based on the C++ port, and currently live on Steam), and the mobile version (based on a fork of the original flash source code, and currently live on iOS and Android).