An SDK to create Mods for dhewm3
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Daniel Gibson fb0708fad4 change engine version to "dhewm3 SDK 1.5.x"; no -ffast-math
it's only shown in the g_version CVar, but if we have this constant
in the SDK make it show something sensible.. and this SDK code should
be compatible with all dhewm 1.5.x releases (=> dhewm3 version will
be bumped to 1.6.x if game API compatibility is broken)

Also disabled (GCC/Clang-specific) -ffast-math - even with
 -fno-unsafe-math-optimizations I don't trust it.
2018-11-12 00:21:13 +01:00
cm Untangle the epic precompiled.h mess 2018-08-20 01:46:28 +02:00
d3xp Make game dll names and compiler defines for mods configurable 2018-08-26 04:47:00 +02:00
framework change engine version to "dhewm3 SDK 1.5.x"; no -ffast-math 2018-11-12 00:21:13 +01:00
game Make game dll names and compiler defines for mods configurable 2018-08-26 04:47:00 +02:00
idlib Make it build as SDK 2018-08-26 01:43:10 +02:00
MayaImport Make it build as SDK 2018-08-26 01:43:10 +02:00
renderer Fix dedicated server for Windows 2018-08-20 01:46:37 +02:00
sound Make it build as SDK 2018-08-26 01:43:10 +02:00
sys It builds with VS 2017 now 2018-09-02 01:25:23 +02:00
tools/compilers/aas Untangle the epic precompiled.h mess 2018-08-20 01:46:28 +02:00
ui Untangle the epic precompiled.h mess 2018-08-20 01:46:28 +02:00
.gitignore Make it build as SDK 2018-08-26 01:43:10 +02:00
CMakeLists.txt change engine version to "dhewm3 SDK 1.5.x"; no -ffast-math 2018-11-12 00:21:13 +01:00
config.h.in Make it build as SDK 2018-08-26 01:43:10 +02:00
COPYING.txt Add GPLv3 COPYING.txt 2018-08-20 01:46:20 +02:00
README.md README: Add link to hq2 branch 2018-08-28 01:09:16 +02:00

dhewm3 Mod SDK

This repository contains an SDK that can be used to create modifications ("mods") for (or port Doom3 mods to) dhewm3.

It contains (mostly) the same source files as the original Doom3 SDK, but these are taken from dhewm3 and are licensed under GPLv3, not the SDK license.
Another small difference is that this is built using CMake instead of SCons + VS Project files.
This means that you need CMake to build it, but don't worry, on Windows it can create a Visual Studio Solution for you so you can program and compile with Visual Studio like you might be used to.

This repository also contains ports of existing mods whichs authors released the source under GPL; you can find these in their own branches: Classic Doom 3 and Denton's Enhanced Doom3 and HardQore2

How to build

(I should eventually expand this, especially for Windows)

On Linux and similar the following should work (if you have cmake, make and GCC/g++ installed):

  1. Clone the dhewm3-sdk git repo
  2. switch to your git clone's directory: cd dhewm3-sdk
  3. (optional: switch to an existing mods branch: git checkout dentonmod)
  4. create a build directory: mkdir build
  5. switch to build directory: cd build
  6. create Makefile with CMake: cmake ..
  7. compile the mod .so: make -j4
  8. it (e.g. dentonmod.so) should now be in the build/ directory, copy it to your dhewm3 install, where base.so and d3xp.so are
  9. start the game with that mod, like dhewm3 +set fs_game dentonmod

(Make sure to actually have the mods game data in the right directory as well; the directory name should be the same as the game lib name, but without .so/.dylib/.dll, for example dentonmod/ for dentonmod.so)

On Windows it should be kinda similar, but you have to tell CMake to create a Visual Studio solution for the VS version you're using, or Makefiles for MinGW-w64 or whatever.

How to port a Mod to dhewm3

The usual (easiest) way to port a mod is to make a diff between the mod's source and the Doom3 SDK and apply the resulting patch to the vanilla game source (from the master branch).
Afterwards usually some manual work must be done to resolve patching conflicts and get the mod to compile.
Also, the CMakeLists.txt file must be adjusted (see the dentonmod branch for examples).

Please note that currently I only accept mods that are released under the GPL license - the one used by Open Source Doom3 (i.e. not only the Doom3 SDK license) - because neither the GPL nor the SDK license allow merging code from both licenses.
So please get permission from the mod authors first.

Yes, this unfortunately means that unless you manage to contact Sikkpin and get his permission, there will be no Sikkmod for dhewm3 (and neither other mods that use Sikkmod code) :-(
(If you are Sikkpin, please get in touch!)

Getting in touch

If you are a mod author and want to release your mod's sourcecode under GPL, but don't want to port it yourself (or don't have time or are unsure how) please contact me, I can probably help you :-)

The easiest way to contact me is by creating an issue in this Github repository, or by sending a DM to caedes in the id Tech Forums or by pinging caedes in the #iodoom3 IRC channel on FreeNode.