texture manager. They now get assigned a new FEmptyTexture object
that is just a 1x1 pixel transparent texture.
- Fixed: Multiple namespace markers of the same type were no longer detected.
- Fixed sprite renaming.
SVN r1566 (trunk)
checking for the end marker. On 32-bit systems, this is -1, but on 64-bit
systems, it is a very large integer that is highly unlikely to be in mapped
memory.
SVN r1564 (trunk)
- Fixed: AM_NewResolution crashed when called from outside a level.
- Added support for Quake PAK files.
- Improved warning messages for WAD files with incorrect marker usage.
SVN r1556 (trunk)
extensions.
- Removed merging of special namespaces. For the texture manager this has
become totally useless so there is no need to do this anymore. Not merging
the namespaces also allows a much more reliable detection of lumps belonging
to special namespaces so the ScanForFlatHack function is no longer needed.
Instead, any lump up to F_END with a length of 4096 will be marked for
inclusion as a flat texture if no F_START marker is found.
- Made the counting of intermission stats in Doom a GAMEINFO option so that
it can be activated in all games.
SVN r1555 (trunk)
- Added -noautoload option.
- Added default Raven automap colors set. Needs to be tested because I can't
compare against the DOS version myself.
- Extened A_PlaySound and A_StopSound to be able to set all parameters of the
internal sound code.
SVN r1544 (trunk)
of a moving floor, regardless of movement speed. For NOBLOCKMAP items this
is necessary because otherwise they can be left in the air and it also adds
some options for other things.
SVN r1540 (trunk)
variable inside A_VileAttack() so that if P_DamageMobj() destroys the
target, the function will still have a valid pointer to it (since reading
it from the actor's instance data invokes the read barrier, which would
return NULL).
SVN r1538 (trunk)
NOBLOCKMAP flag taken away previously to make them move with a sector.
This should fix the performance problem Claustrophobia had with recent
ZDoom versions.
SVN r1537 (trunk)
empty weapon slots due to the recent rewrite of the weapon slot assignment
code. To handle such classes each game now defines a default weapon slot
setting in its gameinfo. This will be used when a player class without any
weapon slot settings is used.
SVN r1521 (trunk)
- Fixed: player.crouchsprite had no proper means of unsetting the crouch
sprite which is needed by the ChexPlayer.
- Fixed: A_ChangeFlags must unlink the actor from the world before changing
the NOBLOCKMAP and NOSECTOR flags.
SVN r1514 (trunk)
- Changed the definition of several typedef'd structs so that they are
properly named.
- Limited DEHSUPP lump lookup to search zdoom.pk3 only. It will no longer
be possible to load DEHSUPP lumps from user WADs.
- Brought back the text-based DEHSUPP parser and changed it to be able to
reference states by label. Also changed label names of
DoomUnusedStates and added proper labels to all states that were
previously forced to be the first state of an actor so that the old
(limited) method could access them. This was done to address the following
bug:
- Fixed: The player's death states calling A_PlayerSkinCheck should not be
part of the state set that is accessible by Dehacked. These will produce
error messages when mapped to non-players.
SVN r1512 (trunk)
cryptographically secure random number generator, if available, instead
of the current time.
- Changed the random number generator from Lee Killough's algorithm to the
SFMT607 variant of the Mersenne Twister.
SVN r1507 (trunk)
typedef'ed anonymous structs.
- Fixed: P_AutoUseHealth() used autousemodes 0 and 1 instead of 1 and 2.
- Fixed: SBARINFO did not recognize 5:4 aspect ratio.
- Fixed: screenshot_dir was ignored.
SVN r1505 (trunk)
with maps that have no name.
- Fixed: The inner loop in AWeaponSlot::PickWeapon could endlessly loop when
the counter variable became negative.
SVN r1504 (trunk)
- removed gamemode variable. All it was used for were some checks that
really should depend on GI_MAPxx.
- Externalized all internal gameinfo definitions.
- added include to MAPINFO parser.
- split IWAD detection code off from d_main.cpp into its own file.
- disabled gamemission based switch filtering because it is not useful.
- added GAMEINFO submission by Blzut3 with significant modifications. There
is no GAMEINFO lump. Instead all information is placed in MAPINFO, except
the data that is needed to decide which WADs to autoload.
SVN r1497 (trunk)
making a function call in ACS. Now you can print inside functions and
also return values from them for the caller to plug directly into
another string without having to save it to a temporary variable.
SVN r1492 (trunk)
initialization. To be used to check for errors in scripts without actually
running the game.
- Added the -stdout parameter to the Windows version to send all output to
a console, like the Linux version has done all along.
SVN r1486 (trunk)
- Removed CVAR_SERVERINFO flag from compatmode. Since it writes to
compatflags, that should be enough. Having that flag set for both of
them leads to problems with e.g. loading a savegame, where compatflags is
restored, then compatmode is restored and it completely undoes whatever
compatflags was restored to.
- Fixed: Trying to start a map for some single file that isn't really a map
caused a crash.
SVN r1478 (trunk)
- Added more output to zipdir and a -q option to turn it off.
- Added -u option to zipdir to only recompress those files in a zip that have
changed.
- Added -d and -f options to zipdir. -d forces deflate compression, and -f
forces a write of the zip, even if it's newer than all the files it contains.
- Added support for bzip2 and LZMA compression to zipdir.
SVN r1468 (trunk)
the title screen, because the demo loop reset the server cvars after each
attempt to play a demo, even though the demos never actually played. The
proper long-term solution would be to make shadow copies of all cvars
touched by demos and use those for the demo and the real things for
everything else, but this should do for now and is a lot easier.
SVN r1463 (trunk)
QueryPerformanceCounter() is obviously using the TSC for its timing on my
machine, yet the overhead it has to do to keep the timer sane is apparently
noticeable on a few maps. I suppose I should at some time check
clock_gettime() and see if it has similar issues on Linux.
SVN r1460 (trunk)
be called now.
- fixed: D'Sparil's second form was missing the BOSSDEATH flag.
- fixed: D'Sparil's first form requires the DONTGIB flag.
- fixed: Heretic doesn't crush monsters. To handle this in a more generic
fashion this depends on the presence of a gib sprite now.
SVN r1459 (trunk)
- Fixed: Gravity application was not correct. For actors with no vertical
momentum the initial pull is supposed to be twice as strong as when
vertical movement already takes place.
- added invquery CCMD like in Strife. Also removed all underscores from the
tag strings so that they can be printed properly.
- Fixed: Skill baby was missing 'autousehealth' for all games.
- Added a new CVAR: sv_disableautohealth
- Autouse of health items is no longer hardwired to the default item classes.
There's a new property HealthPickup.Autouse. 0 means no autouse, 1 a small
Raven health item, 2 a large Raven health item and 3 a Strife item.
SVN r1452 (trunk)
effect rather than as an input to the ChannelGroup Target Unit. This means
the water effect is now applied after any room reverb, rather than in
parallel with it.
- Fixed: UI sounds should not have reverb applied to them.
SVN r1450 (trunk)
DSP position. Without also synchronizing the stopping of sounds, it can
cause problems with things like the chainsaw where the sound is stopped and
immediately restarted, causing occasional gaps between the stopping of the
sound and the starting of the new one. (I added the start synchronization to
combat flanging of paired moving polyobjects when moving around, but I think
just removing velocity from the player for sound calculations takes care of
that well enough.)
SVN r1447 (trunk)
- Added FakeInventory.Respawns DECORATe property
- Fixed: Unsetting the MF5_INCONVERSATION flag did not work when quitting the
conversation by pressing Escape.
SVN r1442 (trunk)
so it contained an invalid pointer. There were also a few other places that
simply assumed that the second chip is set to something valid.
- Fixed: NPCs which are engaged in a conversation should not move.
- Fixed: Player movement animation was not stopped when starting a conversation.
SVN r1439 (trunk)
don't actually compress all that well, even the ones that aren't too short
to possibly compress. (Maybe make the whole thing one long, never-ending
zlib data stream with Z_SYNC_FLUSH used to chunk things at packet
boundaries? That would probably help the compression ratio, but it would
require changing the way the netcode determines sequence, which would be
a much more invasive change.)
SVN r1438 (trunk)
code depends on the original indices.
- Fixed: P_StartConversation set the global dialog node variable for all
players, not just the consoleplayer.
- Fixed: AWeapon::PickupForAmmo assumed that any weapon having a secondary
ammo type also has a primary one.
SVN r1431 (trunk)
- changed weapon slots to be stored per player. Information is now transmitted
across the network so that all machines know each player's current weapon
configuration so that it can be used by cheats or HUD display routines.
SVN r1430 (trunk)
have those escapes stripped before printing so that they do not merge with
subsequent text.
- Moved default weapon slot assignments into the player classes.
Weapon.SlotNumber is now used solely for mods that want to add new weapons
without completely redoing the player's arsenal. Restored some config-based
weapon slot customization, though slots are no longer automatically saved
to the config and section names have changed slightly. However, unlike
before, config slots are now the definitive word on slot assignments and
cannot be overridden by any other files loaded.
- Fixed: Several weapons were missing a game filter from their definitions.
- Removed storage of weapon slots in the config so that weapon slots can
be setup in the weapons themselves. Slots are still configurable, since
they need to be for KEYCONF to work; any changes simply won't be saved
when you quit.
- Removed limit on weapon slot sizes.
SVN r1428 (trunk)
certain actors and added an option to APowerInvisibility to set this
flag when active.
- Added map specific automap backgrounds.
- Fixed: Voodoo dolls did not play a sound when dying.
- Added colorized error messages to DECORATE and made a few more error
conditions that do not block further parsing not immediately abort.
- Made all errors in CreateNewActor not immediately fatal so that the
rest of the DECORATE lump can be parsed normally to look for more errors.
- Fixed: Defining classes with the same name as their immediate base class
was legal. It should not be allowed that a class has another one with the
same name in its ancestry.
- Fixed: Formatting of the intermission screen on Heretic, Hexen and Strife
was broken. Changed it to use WI_Drawpercent which does it properly and
also allows showing percentage in these games now.
- Fixed: The MAPINFO parser ignored missing terminating braces of the last
block in the file.
SVN r1425 (trunk)
colored error messages appear colored in the startup window. Also lightened
up the "Flat" red to contrast better with the startup background.
SVN r1424 (trunk)
- Fixed: Most Linux filesystems do not fill in d_type for scandir(), so we
cannot rely on it to detect directories.
- Added NicePath() function to perform shell-style ~ substitution on path
names.
- Changed the default screenshot directory on Unix to ~/.zdoom/screenshots/.
- Added -shotdir command line option to temporarily override the
screenshot_dir cvar.
SVN r1413 (trunk)
replaced it did the check at the center of the area intersected by the
sprite and the drawseg, whereas 2.0.63 only did the check at the location
of the sprite on the map.
SVN r1411 (trunk)
monsters in A_DoChase(). They can still find new targets without this,
and with it, they got stuck on the first frame of their see state.
SVN r1410 (trunk)
change levels while dead by immediately respawning you before the switch
so that you get to keep all your inventory.
- Fixed: G_InitLevelLocals() did not set flags2.
SVN r1406 (trunk)
maps in the compatibility list.
- Added compatibility settings for a few more levels in some classic WADs.
- Added spechit overflow workaround for Strain MAP07. This is highly map
specific because the original behavior cannot be restored.
- Added a check for Doom's IWAD levels that forces COMPAT_SHORTTEX for them.
MD5 cannot be used well here because there's many different IWADs with
slightly different levels. This is only done for Doom format levels to
ensure that custom IWADs for ZDoom are not affected.
- fixed: level.flags2 was not reset at level start.
- Fixed: Morph powerups can change the actor picking up the item so
AInventory::CallTryPickup must be able to return the new actor.
- Fixed: ACS's GiveInventory may not assume that a PlayerPawn is still
attached to the player data after an item has been given.
- Added a missing NULL pointer check to DBaseStatusBar::Blendview.
SVN r1405 (trunk)
lets A_Look() always put the actor into its see state. This problem could
be heard by an Archvile's resurrectee playing its see sound but failing to
enter its see state because it was called from A_Chase().
SVN r1399 (trunk)
- fixed: The nextmap and nextsecret CCMDs need to call G_DeferedInitNew instead of G_InitNew.
- merged MAPINFO branch back into trunk.
SVN r1393 (trunk)
but Linux being Linux, there are no guarantees that it's appropriate for
other systems.
- Fixed: SDL input code did not generate GUI events for the mousewheel, so it
could not be used to scroll the console buffer.
SVN r1381 (trunk)
- Fixed: The compatmode CVAR needs CVAR_NOINITCALL so that the compatibility flags don't get reset each start.
- Fixed: compatmode Doom(strict) was missing COMPAT_CROSSDROPOFF
SVN r1376 (trunk)
vulnerability "format not a string literal and no format arguments".
- Changed the CMake script to search for fmod libraries by full name instead
of assuming a symbolic link has been placed for the latest version. It can
also find a non-installed copy of FMOD if it is placed local to the ZDoom
source tree.
SVN r1373 (trunk)
- added a new compatmode CVAR which allows setting some generic compatibility
flag combinations:
Doom: sets the options needed to make most Doom.exe compatible map play without
errors.
Doom (strict): Same as above but sets a few more options. Please note that this
does not mean full Doom.exe behavior emulation.
Boom: Sets all options that consider differences between ZDoom and Boom.
ZDoom 2.0.63: Sets only the COMPATF_SOUNDTARGET option which is needed for
many older ZDoom maps.
- added new COMPAT_CROSSDROPOFF option to block monsters from being pushed over
dropoffs by damage kickback.
- fixed: AFastProjectile::Tick must call Effect only 8 times per tic, regardless
of the amount of steps taken.
- fixed: momentum checks in AFastProjectile did not use absolute values.
SVN r1369 (trunk)
clone a texture. Used for creating warping textures.
- Fixed: P_FindFloorCeiling should not be called before setting the actor's z-
coordinate. For testing 3D Midtex lines and 3D floors the proper position
needs to be set first.
- Fixed the autoaim fix from Jan 10.
SVN r1358 (trunk)
delayed until after its z-coordinate has been set. That means that for
map spawns AActor::StaticSpawn may not call P_FindFloorCeiling for such
actors.
SVN r1352 (trunk)
- Fixed: P_RailAttack used the shooting actor or a default puff for some splash
related actions. It should use the puff type passed to it as a parameter instead.
- Changed splash handling in P_LineAttack to use the actual hit position to
spawn the splash and not the puff's spawn position which is offset a little.
- made some precision related changes to P_HitWater. The precise hit coordinate
can now be passed as parameters.
SVN r1350 (trunk)
the time freezer and make them behave better.
- Fixed: When sounds are paused not all newly started sounds should actually
be played.
- Fixed: SBARINFO had no means to check if a weapon uses any ammo at all and
as a result the inventory icon was misplaced if a no-ammo weapon was selected.
SVN r1343 (trunk)
compatibility ZDoom needs to define this name, too, even though it doesn't
use it.
- Fixed: The nodebuilder could hang on badly set up polyobjects. Now it aborts
when the loop iterates NumberOfSegs times.
SVN r1338 (trunk)
- Added a static error counter to FScriptPosition class.
- Changed initialization of actor class type properties: fuglyname is gone as
is the postprocessing in FinishThingdef. Instead an empty placeholder class
is now created when a class is first referenced and this placeholder is later
filled in.
- Added option to replace backslash with '^' in state frame definitions because
the backslash is just causing too many problems because it's also an escape
character.
SVN r1334 (trunk)
a player class selection menu and an episode menu.
- Fixed: AddToConsole could write outside its working buffer.
- Fixed: 0 was no longer recognized as placeholder for 'no state' in A_Chase.
- Fixed: When picking up weapons the code did not check if it should switch away
from weak weapons.
SVN r1332 (trunk)
them to OggEnc, so I have no choice but to convert them to mono by chopping
off the right channel and only using the left channel information.
SVN r1327 (trunk)
the resultant Vorbis stream is not actually stereo but mono with the right
channel after the left. The two need to be interleaved just like
uncompressed samples are.
- Removed the pattern length limit in the XM reader.
SVN r1326 (trunk)
CrossbowFX2 and MaceFX4 were missing decals, and HornRodFX2 gets a whole
new decal.
- Fixed: bfgscrc2.png had some holes in the middle that did not look so good.
(From previously being handled through WinTex, maybe?)
SVN r1325 (trunk)
vector math routines (almost two years ago!) because the original code
multiplied down columns of the rotation matrix, but the new code multiplies
across rows of the matrix instead. This is remedied by flipping the matrix
across the x=y axis by reversing the sign of the sine value passed to the
matrix constructor.
SVN r1324 (trunk)
summoning.
- Added Karate Chris's fix for Serpent Staff vampirism on teammates.
- Locks and teleporters now take precedence over one-sidedness for automap
coloring.
SVN r1317 (trunk)
256 to 1024 to deal with a module that otherwise would not load.
- Removed the artificial restriction on not supporting Vorbis-compressed
samples in XMs if they are stereo, since it turns out that OggMod does
support them.
SVN r1316 (trunk)
in such a sector. As a workaround for current map formats a new actor
(DoomEdNum 9041) was added that can set the extended sector flags without the
use of ACS and sector tags. The new flag can also be set with Sector_ChangeFlags.
- Fixed: Players ignored MF2_TELESTOMP and always telefragged what was in the way.
- Fixed: Actors with MF5_NOINTERACTION were not affected by the time freezer.
SVN r1315 (trunk)
instead of overwriting the original string. ACS performing this operation
in place caused crashes with RTC-3057.
- fixed: FScriptPosition::Message did not print the message if it was not
a fatal error.
SVN r1313 (trunk)
which caused roundoff errors that made it less than 1/3 effective.
- Added support for "RRGGBB" strings to V_GetColor.
- Fixed: Desaturation maps for the TEXTURES lump were calculated incorrectly.
- Changed GetSpriteIndex to cache the last used sprite name so that the code
using this function doesn't have to do it itself.
- Moved some more code for the state parser into p_states.cpp.
- Fixed: TDeletingArray should not try to delete NULL pointers.
SVN r1312 (trunk)
statements.
- Added ClassifyActor(tid) ACS builtin function. This takes a TID and returns
a set of bits describing the actor. If TID is 0, it returns information
about the activator. If there is more than one actor with the given TID,
only the first one is considered. Currently defined bits are:
ACTOR_NONE No actors with this TID exist (only when TID is not 0).
ACTOR_WORLD Activator is the world (only when TID is 0).
ACTOR_PLAYER Actor is a player (includes bots and voodoo dolls).
ACTOR_BOT Actor is a bot.
ACTOR_VOODOODOLL Actor is a voodoo doll.
ACTOR_MONSTER Actor is a monster.
ACTOR_ALIVE Actor is alive (players/monsters only).
ACTOR_DEAD Actor is dead (players/monsters only).
ACTOR_MISSILE Actor is a missile.
ACTOR_GENERIC Actor exists, but no further information is available.
SVN r1310 (trunk)
- AutoExec paths now support the same variable expansion as the search paths.
Additionally, on Windows, the default autoexec path is now relative to
$PROGDIR, rather than using a fixed path to the executable's current
directory.
- All usable Autoload and AutoExec sections are now created at the top of
the config file along with some brief explanatory notes so they are
readily visible to anyone who wants to edit them.
SVN r1307 (trunk)
failed to start the demo.
- Added a MF5_BRIGHT flag to always render an actor fullbright.
- Fixed: Calling Door_Animated with a non-zero tag created a new thinker
for each two-sided line of the sector.
- Added Karate Chris's submission for making 'spray' a cheat.
- Added CO2's default parameter additions for several Doom code pointers
submission.
- Added CO2's A_RemoveMaster/A_RemoveChildren submission.
- Added Blzut3's SBARINFO replacement for the Doom statusbar.
- Fixed: SBarInfo still displayed the wrong bar for height 0
- Added A_KillSiblings and A_DamageSiblings code pointers.
- added MaxAbsorb and MaxFullAbsorb properties for Armor.
SVN r1304 (trunk)
look awful on widescreen intermissions. Also changed the column widths to
be font-dependant rather than fixed proportions of the screen width.
- Fixed horizontal positioning of 'finished' on the Raven games when scaled.
SVN r1303 (trunk)
hash chains.
- Fixed: specifying texture patches or font characters by full lump name instead
of texture name didn't work. To do this properly the texture manager needs
an option to look for a texture by lump number so that such textures can
be maintained without interfering with regular operation.
- added 'skystretch' and 'autosequences' keywords for MAPINFO so that the effects
of 'noautosequences' and 'forcenoskystretch' can be cancelled.
- Added a 'gamedefaults' section to MAPINFO after discovering that 'defaultmap'
gets reset for each MAPINFO. A global section is needed to define a game's
default setting in zdoom.pk3. The gamedefaults should normally not be changed
by PWADs but it can be done if some mod intends to change gameplay settings
but wants to allow custom add-ons on its own.
SVN r1300 (trunk)
called SMALLFNT.
- Reduced the width of the second column in wi_percents false mode from 3 to
2 characters.
- Added a WISLASH graphic for Doom's intermission screen when wi_percents is
false.
SVN r1298 (trunk)
- Added the following flags to drawselectedinventory center, centerbottom, and
drawshadow.
- Fixed: The translucent flag for drawinventorybar should only have affected
the artibox image.
- Fixed: compatf_limitpain must check for 21 Lost Souls, not 20.
SVN r1297 (trunk)
- Changed WI_drawPercent() when wi_percents is false so that the total
display is optional, and it formats it like Heretic's intermission, with
a slash and a fixed-width right column.
- Font is no longer a property of the screen object. Pass the font to
DrawText and DrawChar directly instead.
- Doom's intermission characters are now collected together as a font
so they can be colorized.
SVN r1294 (trunk)
do it the old way and scan every channel to see if it matches an actor/
entchannel pair.
- Fixed: S_RelinkSounds() did not move the SoundChans bitfield to the new
actor.
- Fixed: Stolen channels could be kept around by the high-level channels
indefinitely.
SVN r1289 (trunk)
- Added kill count awareness to A_ChangeFlag.
- P_NightmareRespawn() now clears the MTF_AMBUSH flag, so respawned monsters
aren't dormant (since there would be no way to activate them, and they
were certainly not dormant when they died).
SVN r1287 (trunk)
- Fixed: The DECORATE expression evaluator was too strict with missing jump labels.
For compatibility it only may print a warning, not an error.
SVN r1284 (trunk)
structure.
- Fixed: Items which should stay but had an IF_ALWAYSPICKUP flag were removed.
- Fixed: The pickup flash must only play when an item is picked up so the
correct place to spawn it is in AInventory::Touch, not in AInventory::GoAway.
SVN r1278 (trunk)
parameters.
- All DECORATE parameters are passed as expressions now. This change allows
for compile time checks of all class names being used in DECORATE so many
incorrect definitions may output warnings now.
- Changed DECORATE sound and color parameters to use expressions.
- Changed: S_StopChannel now resets the actor's sound flags. The previous bug
made me think that delaying this until FMod calls the end of sound callback
may simply be too late.
SVN r1276 (trunk)
the sound channel data when a sound is being stopped. This caused
an endless loop when changing levels with Strife's Flamethrower active.
SVN r1275 (trunk)
and DEM_WIPEOFF commands. Fixes multimap demos desyncing when played back
or recorded with wipes enabled, and prevents multiplayer games from
starting until all players' wipes have finished.
SVN r1272 (trunk)
symbols there instead of into AActor.
- Changed the expression evaluator's floating point precision to double.
- Started rewriting the DECORATE expression evaluator to allow more flexibility.
All the operators use the new functionality but functions, variables and
constants are yet to be redone.
While doing this rewrite I noticed that random2 was always evaluated as const.
This got fixed automatically.
SVN r1264 (trunk)
* This may or may not be a problem, but GCC warned that FStateDefinitions::
AddStateDefines() does not initialize def.FStateDefine::DefineFlags, so
I fixed that.
SVN r1262 (trunk)
two-entry array for passing to the main FindState() routine, but did
not actually pass it, passing the original primary label instead.
SVN r1261 (trunk)
- Fixed: ThingCountSector and ThingCountNameSector did not remove enough
entries from the stack, and did not put the result in the right slot.
- Fixed: Teleport lines were prioritized over secret lines when deciding what
color to draw them on the automap.
- Fixed: Death-reverting morphs did not remove the morph item from the
player's inventory when death caused the morph to revert.
- Updated fmod_wrap.h for FMOD Ex 4.18.
SVN r1259 (trunk)
- Fixed: S_ChannelEnded didn't check for a NULL SfxInfo.
- Fixed: R_InitTables did a typecast to angle_t instead of fixed_t.
- Fixed: PowerProtection and PowerDamage applied their defaults incorrectly.
- Fixed: The damage type property didn't properly read its factor.
SVN r1257 (trunk)
against decorations without breaking anything newer:
Added a new 'projectilepassheight' property that defines an alternative height
that is only used when checking a projectile's movement against this actor.
If the value is positive it is used regardless of other settings, if it is
negative, its absolute will be used if a new compatibility option is enabled
and if it is 0 the normal height will be used.
SVN r1253 (trunk)
