Xash3D Engine

Developers :

Uncle Mike
HLFX.ru forum Members
CortexReaver - English Translation

Me ( Gunship_MK_II ) is NOT a developer, no questions to me.

Xash3D Engine support all GoldSource Games and MOD's. Here is the list of completed mods with it :

1. Point Of View
2. Snark Planet (demo)
3. Rumble
4. Lost In Black Mesa (HLFX version)
5. Ispitatel
6. Ispitatel II
7. Ispitatel IV
8. HLFX Single (demo)
9. Blue-Shift
10. Cleaner's Adventures
11. Uplink
12. Spirit 1.0, 1.3, 1.7 (demo maps)
13. HLFX 0.5 (demo maps)
14. Azure Sheep
15. Paranoia
16. Retribution
17. Invasion (increase max_tempents up to 1024 to prevent possible crashes)
18. Half-Quake 2: Amen
19. Half-Quake 3: Sunrise
20. Half-Quake
21. The Trap (toggle sv_fix_pushents to '0')
22. Gunman Chronicles
23. Black Ops
24. SSH ( Scientist SlaughterHouse )

       
Xash3D limits are not just higher than Half-Life ones, they're also can be tuned in gameinfo.txt file.
MAX_EDICTS is 600 - 4096 (versus 900 in Half-Life).
MAX_TEMPENTS is 300 - 2048 (vs. 500).
MAX_PARTICLES is 1024 - 8192 (vs. 4096).
MAX_BEAMS is 64 - 512 (vs. 64)
Careful limits reduction can save RAM in mods which don't need many edicts.
Also MAX_EDICTS parameter is broadcasted from server during a multiplayer session, it adjusts clients to new conditions automatically.

These limits are hardcoded into the engine and cannot be tuned by user.
MAX_VISIBLE_PACKET is 512 entities (256 in Half-Life).
MAX_MODELS is 2048 unique models (including sprites and bmodels)
MAX_SOUNDS is 2048
MAX_SENTENCES is 2048 (1534 in Half-Life)
MAX_USER_MESSAGES is 191 (128 in WON Half-Life)
MAX_TEXTURES is 4096 (2048 of them can be used for VGUI)
MAX_MESSAGES is 2048 (1024 in Half-Life) (quantity of messages in titles.txt)
Maximum size for indexed textures is 1024х1024 (vs. 512х512 in Half-Life)
Maximum size for true-color textures is 4096x4096.

#define MAX_MAP_MODELS 1024 (256 in half-life)
#define MAX_MAP_LEAFS 32767 (8192 in half-life)
Note: other BSP-model limits are set in compiler and don't depend on the engine.

Xash3D allows to get more accurate value of current lighting level, because it considers lightstyles
and their current values. In next versions, entity brightness will be calculated for flashlights of every player
(e.g. in multiplayer). The player's lighting is taken directly from renderer and considers all lighting types,
including entity light and dynamic light.

Half-Life supports decal save only on world surfaces and very rare on doors, elevators and other moving models.
Xash3D saves decals on every brush model.
Decal transition between levels is also maintained (implemented in Half-Life, but doesn't really work).

This technology allows to load entities from external .ent script file.
This script can be produced by the external ripent.exe application or by engine's facilities by typing
the entpatch command. If the command is entered when a map is loaded, a new entity patch will be created.

Xash3D supports following BSP-map formats: Quake 1, Half-Life, Half-Life Blue Shift. Besides, Quake 1 external
bmodels are supported (medikit and ammo models).
Note: it is recommended to play Quake 1 maps in Deathmatch Classic mod to prevent stuckness of player
because of the difference between hull's sizes of Half-Life and Quake. Besides, DMC supports all entities needed
for complete deatmatch experience on Q1 maps.

Xash3D allows to precache models "on the fly" that helps to avoid nasty PF_PRECACHE_ERROR. Also Xash3D doesn't crash if a model or sound wasn't found.

       
Before switching to a next map Xash3D will analyze its state (without unloading the current map) and decides
whether correct changelevel procedure is possible. In case of any error in a next map the engine will signal about
it in the developer's console, and the changelevel will be aborted. The error message also contains troubleshoot tips
that can make level designer's life easier, because such errors are most difficult to diagnose and fix.
In some cases Xash3D can turn smooth changelevel off on one's own
and turn on the classic changelevel as in Quake. Respective error message will be printed in the console.

To display credits and exit the game after, run the pfnEndSection command with oem_end_credits argument.
The credits code is placed in menu.dll and can be changed by user at his discretion.

Xash3D entities behave more stable on moving platforms and don't shift away on sharp turns.

It allows to tie one entity to another, taking into account movement and rotation of the former entity. You can see an example in SDK - a crossbow bolt that correctly attaches itself to func_pushable, func_rotating, func_tracktrain and other brush models.

       
Xash3D has a powerful console autocomplete system that allows not just print command lists,
but also describe all of them during the search. For more comfort you can type
makehelp in the console, and the engine will generate help.txt that contains the list of all commands and variables with
short descriptions. Map, movie, background track, cfg script, save, weapon (give command), sound (play command), game directory names input is also assisted by the autocomplete feature.

       
Most Quake engines are restricted to the parent directory with specific name, which doesn't matter
when you make mod, but very uncomfortable when you make total game conversion and therefore replace the parent directory. Xash3D doesn't restricted to specific folder, and the parent directory is defined by the launcher. This way you can make your
own game that doesn't depend on Half-Life.

       
Dedicated server has the autocomplete feature now, your command history can be saved.

       
Background map is a map to be displayed as a menu background. You could see them in Half-Life 2.
Xash has a simplier background map system - it doesn't depend on unlocked chapters (because original Half-Life has no chapters system) and it chooses the background map from the list.
This list file must be named as chapterbackgrounds.txt and placed in scripts directory (if you don't have such directory, then just make it). Every list's entry is separated by new line.
Example:

с1a1a
c2a1
c4a3
c2a5
c0a0

You can use any playable map as the background, but better don't use maps where player starts in a moving train,
because it won't look good.

       
Turned off by default. Doesn't work with short sequences like switching on and off the light.
It smooths light animation very well on long slow sequences like SlowStrobe or SlowPulse.
Note: FPS rate may suffer from this option.

       
You can see such textures in original quake maps as glowing fields on a texture.
Because this feature is caused by the Quake pallet's special features, the engine enables it
for textures that have Quake or Quake2 pallet. This pallet is saved well after the simple conversion
of wad2 files to wad3. As an example, this can be observed on Scrama's qstyle map.

       
Improved model lighting includes per-bone lighting from static and dynamic light sources,
and it also includes correct model lighting on every stage of long sequence execution, when model goes far enough from its real location. The best example is forklift.mdl Sprite lighting is a correct lighting of all sprites that is rendered in additive mode
and had "alphtest" during the compilation. For example, blood decals uses the world lighting and doesn't glow in darkness.
Both sprites and models don't just use the world lighting, but also consider lighting of the closest brush model
if there is one.
Note: if improved lighting doesn't work correctly in some games, you can turn it off
using "r_lighting_extended" "0" command.

       
Instead of a usual player image you can see his 3D model in the menu and track all changes right on-the-spot.

More Info in features[eng].txt