Voiid

Author: Sebastien Alaiwan

Demo

An online demo is available here:

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

Description

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

It's meant as an example of a first-person exploration 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

src/gameplay:   source files for the game logic (agnostic to the engine implementation).
src/engine:     I/O code (=engine), mostly game-agnostic.
src/base:       interfaces for communication between the game logic and the I/O code. Also contains shared low-level utilities (e.g Vector2f, Span, etc.).
assets:         source files for game resources.
bin:            output directory for architecture-specific executable binaries.
res:            output directory for generated game resources (e.g. sounds, music, sprites, tilesets).
./check:        main check script. Call this to build native and asmjs versions and to launch the unit tests.

Build

Requirements:

* libsdl2-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 the function 'deliverWebVersion' in the file scripts/deliver.

Run the game

Just run the following command:

$ bin/rel/game.exe