3D shooter in your terminal using raycasting in Awk

Datetime:2016-08-23 00:59:27         Topic: AWK          Share        Original >>
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Bring some old-school fun to your terminal! Explore the dungeon and shoot monsters in this pseudo-3D game inspired by the classic Wolfenstein 3D and Doom.

Running the game

gawk -f awkaster.awk

You need gawk version >= 4.0.0

OS X users must install gawk first. The easiest way to do this is to use Homebrew . Once it has been installed, run the following commands:

brew update
brew install gawk

NetBSD users require gawk . The easiest way to do it is install it with pkgin :

pkgin install gawk

Alternatively install from sources using the pkgsrc framework :

cd /usr/pkgsrc/lang/gawk && make install

Your machine will now be ready to run awkaster .

How to play

Your objective is to navigate the map and activate exit elevator, killing hoards of monsters in the process.


  • WASD - movement
  • J/L - turn left/right. Hold shift to turn quicker
  • spacebar - shoot
  • num 1-4 - change color mode
  • x - activate elevator (arrives after 1000 moves)

Adjusting resolution

By default game resolution is 64x48 "pixels", which are just a pair of ASCII symbols. That means your terminal needs to be at least 128 chars wide. You may change variables w and h to your liking.

Game engine

Wall rendering is done using ray casting. Monsters and projectiles are added after that as sprites. Ray casting is a simple rendering algorithm that doesn't require any 3d modeling or complex computation.

You can find an excellent tutorial here: http://lodev.org/cgtutor/raycasting.html


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