Snake++

An exercise to learn C++ and SDL2 by implementing a simple game of snake in a test-driven way.

Setup

• You'll need make and a recent g++ - the 'MinGW' versions work fine on Windows.

That's all you need to build and run the unit tests, but to build and run the actual game, you also need to:

• Download and unpack SDL2 - I recommend following the tutorial here which covers various operating systems and development environments rather than me half-assedly repeating them here: Lazy Foo.

Building

Make sure that make and g++ are on your path.

On Windows I run:

set path=%path%;D:\Programs\mingw\bin

Now from the root directory of the repository run make:

mingw32-make.exe SDLLIB=D:\Programs\SDL\SDL2-devel-2.0.4-mingw\SDL2-2.0.4\i686-w64-mingw32\lib SDLINC=D:\Programs\SDL\SDL2-devel-2.0.4-mingw\SDL2-2.0.4\i686-w64-mingw32\include\SDL2

Obviously substituting for your relevant include / lib directories and make command (plain old make on Linux). You can make those extra variables environment variables so you don't have to specify them every time.

Running

Make sure that the SDL shared libraries are on your path, plus any other standard system libraries.

On Windows I run:

set path=%path%;D:\Programs\mingw\bin;D:\Programs\SDL\SDL2-devel-2.0.4-mingw\SDL2-2.0.4\i686-w64-mingw32\bin

Finally just run the snake program with snake.exe / ./snake.

Building and running the tests

The unit tests use the Catch framework.

The unit tests have no dependence on any graphics libraries so can just be built and run with:

mingw32-make unit_tests
unit_tests.exe

Or

make unit_tests
./unit_tests

Todo

• I've started trying to make the Makefile OS agnostic, but it's not done.
• Also try running on other OSs (also Android?)
• Add an intro menu screen that you are returned to on game over.