# ahl_dc_rc2.1 release notes

This release should be fully compatible with 2008's ahl_dc_rc2, including
between clients and servers. You can, if desired, pick and chose specific files
from this release without issue.

## Major improvements

* Linux client support!
* radio commands no longer crash on Half-Life "25th Anniversary Update" versions
* func_tankrocket now does nothing instead of crashing servers

## Minor improvements

* Game resource path and line-ending normalization across platforms
* VGUI graphics cleanup
* Map entity cleanup
* Team definition changes so players don't teamkill eachother quite as much
* Player model cleanup
* Weapon model cleanup (Grenade and SAAs)
* Improved default configs

## Installation instructions

* Download ahl_dc_rc2.1-test1.zip
* Unzip in Half-Life installation directory. The unzip will create the 'action'
  directory if it does not already exist.
   * The Half-Life installation directory can be found via right-clicking on
     Half-Life in the Steam Library, selecting "Manage", and then
     "Browse local files"
   * Otherwise, probably one of the following:
      * Windows: C:\Program Files (x86)\Steam\Steamapps\Common\Half-Life\
      * Windows: D:\SteamLibrary\SteamApps\Common\Half-Life\
      * Linux: ~/Steam/SteamApps/common/Half-Life/
      * Linux (very old): ~/.steam/steam/steamapps/common/Half-Life/
* Restart Steam (so it rescans for Half-Life mods)
* Select "AHL: Director's Cut" in Steam Library

### For existing installs that *just* want the critically important fixes:

* Download ahl_dc_rc2.1-test1-dlls-hotfix.zip
* Unzip to Half-Life directory
* Linux Dedicated Servers will need to sort out the conflicts discussed in the
  following section.

## Linux Dedicated Server notes:

### GLIBC 2.41

GLIBC 2.41 introduced security defaults that break addon support in hlds_linux.
Workaround:

    cd ~/Steam/SteamApps/common/Half-Life/
    GLIBC_TUNABLES=glibc.rtld.execstack=2 LD_LIBRARY_PATH="$PWD" ./hlds_linux -game action +map ahl_calypso +ip 0.0.0.0

### Metamod

Metamod is subtly incompatible with modern hlds_linux in that they expect the
AHL gamedll_linux .so to be in two different paths. This can be fixed by a
symlink.

    cd ~/Steam/SteamApps/common/Half-Life/action/dlls
    ln -s ahl.so ahl_i386.so

See action/liblist.gam for more details on both issues.