Naarrow

Author: Sebastien Alaiwan

Demo

An online demo is available here:

http://code.alaiwan.org/games/naarrow

Description

This is a demo of a platform-independent C++14 game project. It uses SDL2, SDL2_image, and the OpenGL core profile.

It's meant as an example of a platformer/metroidvania game which can be compiled to native code, or, using Emscripten, to Javascript, and maybe one day to WebAssembly.

The code doesn't contain any reference/dependency to Emscripten, except in the entry-point file, where the main loop function gets passed to Emscripten.

This code also shows how to isolate your game logic code (doors, switches, powerups, bullets, ..) from your I/O code (display, audio, input).

Directory structure

bin:            output directory for binaries.
./check:        main check script. Call this to build native and asmjs versions.
src/engine:     I/O code (game-agnostic)
src/game:       game logic (engine-agnostic)
src/base:       utilities shared between game logic and I/O code ; scene declaration
res:            pre-rendered game resources (sounds, sprites, tiles)

Build

Requirements:

* libsdl2-dev
* libsdl2-image-dev
* libogg-dev
* libvorbis-dev

It can be compiled to native code using your native compiler (gcc or clang):

$ make

The binaries will be generated to a 'bin' directory (This can be overriden using the BIN makefile variable).

It can also be compiled to Javascript, using Emscripten. In theory, it's as simple as:

$ CXX=emcc make

However, in practice, more options need to be injected to the makefile, like setting EXT (program extension) to ".html", etc. See how the ./check script works for more information about this.

Run the game

Just run the following command:

$ bin/naarrow.exe