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+---
+title: "ioq3"
+draft: false
+---
+
+As a demo, we have added Ouroboros support to the
+[ioq3](https://github.com/ioquake/ioq3) game engine. ioq3 is a fork of
+ID software's [Quake III Arena GPL Source
+Release](https://github.com/id-Software/Quake-III-Arena). The port is
+available as a [patch](/patches/ouroboros-ioq3.patch). The servers
+currently only work in dedicated mode (there is no way yet to start a
+server from the client).
+
+To get the demo, first get the latest ioq3 sources:
+
+```
+$ git clone https://github.com/ioquake/ioq3.git
+$ cd ioq3
+```
+
+Copy the patch via the link above, or get it via wget:
+
+```
+$ wget https://ouroboros.rocks/patches/ouroboros-ioq3.patch
+```
+
+Apply the patch to the ioq3 code:
+
+```
+$ git apply ouroboros-ioq3.patch
+```
+
+With Ouroboros installed, build the ioq3 project in standalone mode:
+
+```
+$ STANDALONE=1 make
+```
+
+You may need to install some dependencies like SDL2, see the [ioq3
+documentation](http://wiki.ioquake3.org/Building_ioquake3).
+
+The ioq3 project only supplies the game engine. To play Quake III Arena,
+you need the original game files and a valid key. Various open source
+games make use of the engine. We wil detail the procedure for running
+OpenArena in your ioq3 build directory.
+
+Go to your build directory:
+
+```
+$ cd build/<release_dir>/
+```
+
+To run OpenArena, you only need to the game files. First download the
+zip archive (openarena-0.8.8.zip) from the [OpenArena
+website](http://www.openarena.ws) (or via wget) and then extract the
+baseoa folder:
+
+```
+$ wget http://www.openarena.ws/request.php?4 -O openarena-0.8.8.zip
+$ unzip -j openarena-0.8.8.zip 'openarena-0.8.8/baseoa/*' -d
+./baseoa
+```
+
+Make sure you have a local Ouroboros layer running in your system (see
+[this](/tutorial-1/).
+
+To test the game, start a server (replace <arch> with the correct
+architecture extension for your machine, eg x86_64):
+
+```
+$ ./ioq3ded.<arch> +set com_basegame baseoa +map aggressor
+```
+
+Bind the pid of the server to a name and register it in the local layer:
+
+```
+$ irm bind proc <pid> name my.ioq3.server
+$ irm reg name my.ioq3.server layer <your_local_layer>
+```
+
+To connect, start a client (in a different terminal):
+
+```
+$ ./ioquake3.<arch> +set com_basegame baseoa
+```
+
+When the client starts, go to the console by typing ~ (tilde) and enter
+the following command
+
+```
+connect -O my.ioq3.server
+```
+
+The client should now connect to the ioq3 dedicated server over
+Ouroboros. Register the name in non-local layers to connect from other
+machines. Happy Fragging!