3d Thingy

This is my experiment with creating a 3d game using SDL 2. I do all the 3d-ness myself, and I use SDL2 only for drawing points on a window.

You can use arrow keys to move around, or fly and land with w and s keys.

$ sudo apt install git gcc make pkg-config libsdl2-dev
$ git clone https://github.com/Akuli/3dthingy
$ cd 3dthingy
$ make
$ ./3dthingy

I have no idea what you need to do if you don't have apt.

You don't need to do this to run the program. This is for developing program. IWYU checks whether the source code files have the correct includes.

1. Install cmake

    $ sudo apt install cmake
   

2. Add LLVM 8 stuff to your sources.list from https://apt.llvm.org and install the stuff:

    $ sudo nano /etc/apt/sources.list
    $ sudo apt update
    $ sudo apt install llvm-8-dev libclang-8-dev clang-8
   

   Again, I have no idea what you should do if you don't have apt. Sorry.

3. Clone IWYU and compile it

    $ git clone https://github.com/include-what-you-use/include-what-you-use ~/iwyu
    $ cd ~/iwyu
    $ mkdir build
    $ cd build
    $ cmake ../include-what-you-use -DCMAKE_PREFIX_PATH=/usr/lib/llvm-8
   

   If you get a CMake error, look for llvm-something in the error message. If the something part is NOT 8, then the build is using the wrong LLVM version, and you need to make sure that the -D part of the cmake command ends with 8. The same command is in IWYU's README with 7 instead of 8.

4. Compile the IWYU

    $ make -j2
   

   This takes a long time and about a gigabyte of RAM because IWYU is written in C++. I don't like C++.

5. Run the IWYU

    $ cd ~/path/to/3dthingy
    $ export IWYU=~/iwyu/build/bin/include-what-you-use
    $ make iwyu
   

   If you get an error about IWYU not finding <stdbool.h> or some other include file, try this instead:

    $ export IWYU='~/iwyu/build/bin/include-what-you-use -I/usr/include/clang/8/include'
    $ make iwyu
   

   With this, sometimes IWYU suggest "stdbool.h" instead of <stdbool.h> to me, but at least it's better than nothing. Adding #include <stdbool.h> instead of copy/pasting IWYU's suggestion works, too.