- avoid rebinding the same texture multiple times, as there's considerable overhead in the texture manager.
- check gl_sort_textures only once per scene, not per draw list.
Sadly, anything else makes no sense.
All the recently made changes live or die, depending on this extension's presence.
Without it, there are major performance issues with the buffer uploads. All of the traditional buffer upload methods are without exception horrendously slow, especially in the context of a Doom engine where frequent small updates are required.
It could be solved with a complete restructuring of the engine, of course, but that's hardly worth the effort, considering it's only for legacy hardware whose market share will inevitably shrink considerably over the next years.
And even then, under the best circumstances I'd still get the same performance as the old immediate mode renderer in GZDoom 1.x and still couldn't implement the additions I'd like to make.
So, since I need to keep GZDoom 1.x around anyway for older GL 2.x hardware, it may as well serve for 3.x hardware, too. It's certainly less work than constantly trying to find workarounds for the older hardware's limitations that cost more time than working on future-proofing the engine.
This new, trimmed down 4.x renderer runs on a core profile configuration and uses persistently mapped buffers for nearly everything that is getting transferred to the GPU. (The global uniforms are still being used as such but they'll be phased out after the first beta release.
- we need to check all GL versions when trying to get a context because some drivers only give us the version we request, leaving out newer features that are not exposed via extension.
- added some status info about uniform blocks.
- reactivate alpha testing per fixed function pipeline
- use the 'modern' way to define clip planes (GL_CLIP_DISTANCE). This is far more portable than the old glClipPlane method and a lot more robust than checking this in the fragment shader.
Due to the way the engine works it needs to render a lot of small primitives with frequent state changes.
But due to the performance of buffer uploads it is impossible to upload each primitive's vertices to a buffer separately because buffer uploads nearly always stall the GPU.
On the other hand, in order to reduce the amount of buffer uploads all the necessary state changes would have to be saved in an array until they can finally be used. This method also imposed an unacceptable overhead.
Fortunately, uploading uniform arrays is very fast and doesn't cause GPU stalls, so now the engine puts the vertex data per primitive into a uniform array and uses a static vertex buffer to index the array in the vertex shader.
This method offers the same performance as immediate mode but only uses core profile features.
- Added a segment of code that now makes the intermission wait for all
players before advancing, instead of continuing on any player. A "ready
icon" shows to reflect this.
- The Deathmatch intermisson couldn't show the ready icon (because it
just used the ingame scoreboard), so a proper intermission was added,
which reflects the same design as the coop scoreboard.
- The colour column wasted more space then it should have needed, so it
was replaced with player colour backgrounds.
- Slight y offset adjustments to make everything fit in 320x200
properly.
- Also fixed some very strange thing in the shader's desaturate function. For unknown reasons using the 'mix' function there did not work.
- fixed: The fog boundary special shader could not be used.
Turns out that the name doesn't accurately describe what it does.
It is correct for images that come with their own palette or are true color.
But for images using the game palette it doesn't use the red channel to determine translucency but the palette index! Ugh...
This means it cannot be done with a simple operation in the shader because it won't get a proper source image. The only solution is to create a separate texture.
- remove thing color from lighting calculations.
- implement alpha textures and inverse sprites for infrared as texture modes. This still requires some handling for the alpha texture mode for non-shader rendering because there is no way in the fixed pipeline to do it. The inverted texture effect can be done with a texture combiner.
- fixed: ThingColor for sprites was set in the wrong place. It must be in the Process function, not in the lighting calculation.
- added functions for isolated calculation of sprites' dynlight color.
Namely, acolyte, shadow acolyte, reaver, stalker, and turret. Info on
which states needed the slow flag was obtained with Quasar's permission
by looking at G_InitNew() in g_game.c and the info.c state tables from
Chocolate Strife.
Also added fast flag to acolyte states that needed it, based on the same
source.
- For maps like xtheateriii that expect non-blocking push lines to
activate when you are standing on them and run into a completely different
line, there is now this compatiblity.txt-only flag.
- Added freedoom2.wad as valid alias name (freedoom1.wad already
existed).
- Renamed titles to Freedoom: Phase 1 and Freedoom: Phase 2.
- Reordered to put Phase 1 above Phase 2 in the IWAD picker.
- Fixed: Heretic and Hexen completely skip all normal Z processing on
mobjs with FLOATBOB set. To emulate that, we need to add NOGRAVITY to
everything with that flag set.
- extended am_drawmapback so that map backgrounds can only be drawn if used with custom colorsets and Raven's, assuming that these sets were specifically made for the accompanying backgrounds.
- fixed: UDMF's ZDoomTranslated namespace needs to set the DUMMYSWITCHES flag so that it remains compatible with Doom-format ZDoom maps.
SVN r4325 (trunk)
something that never autoaims, such as a railgun.
- Fixed: A_JumpIfTargetInLOS should use P_AimLineAttack() instead of P_BulletSlope(), because the
latter intentionally checks to the sides of the aimed line.
SVN r4007 (trunk)
but only supports three pan positions and not the full 127 MIDI pan positions.
- Added opl_core cvar to select emulator core. 0 is MAME and 1 is DOSBox.
- Added DOSBox's LGPL OPL core, distantly related to one adlibemu.c written by Ken Silverman
(not to be confused with the ancient MAME-derived and GPL-licensed core also found in DOSBox).
I believe this corresponds to their "compat" emulator, but I'm not sure.
SVN r3946 (trunk)
Full stereo panning for the MIDI player. (The raw OPL players are unaffected.) To get the
mono output back, you can set opl_stereo to false.
- Changed SoftSynthMIDIDevice::OpenStream() to allocate the same number of samples for stereo
and mono streams.
SVN r3929 (trunk)
- Changed Actor's Damage property into an actual function. All access to the damage property
must now be done through GetMissileDamage. actor->GetMissileDamage(0, 1) is equivalent
to the former actor->Damage, for the case where actor->Damage was not an expression. (I
suppose I will probably need to make a thunk for DECORATE expressions that want to read it.)
- Cleaned up some decorate expression evaluation functions that are no longer used.
SVN r3919 (scripting)
become ungodly slow when using mods with complex DECORATE. The GCC debug builds run just
fine, however. Hopefully this is something that can be fixed later with an assembly-optimized
version of the main VM loop, because I don't relish the thought of being stuck with GDB
for debugging.)
- Fixed: The ACS_Named* action specials were erroneously defined as taking strings instead of
names.
- Fixed: Copy-paste error caused FxMultiNameState::Emit to generate code that called
DecoNameToClass instead of DecoFindMultiNameState.
- Updated FxActionSpecialCall::Emit for named script specials.
- Fixed inverted asserts for FxMinusSign::Emit and FxUnaryNotBitwise::Emit.
SVN r3893 (scripting)
I could be clever and have the beggar chase after you some after you attack him, with a
random chance to cease pursuit. However, that didn't look much different from his normal
wandering animation, and he usually gave up before getting anywhere near you, so it was
kind of pointless. I kept the action functions around anyway, since they're simple things that
somebody else might find useful.
- Added a melee range check to A_SentinelRefire for actors without missile states. This fixes
Strife's Beggar trying to attack you when you're nowhere near him.
SVN r3863 (trunk)
and RTF_NOTMISSILE so that you can use A_Explode and A_RadiusThrust with non-missiles without
them telling P_RadiusAttack() that the target is the source.
SVN r3860 (trunk)
* GruntSpeed: The minimum speed a player must be falling at the time of landing to play *grunt.
* FallingScreamSpeed: When a player is falling within this range of speeds, they will play *falling.
SVN r3829 (trunk)
overridden in custom player classes by changing their Obituary property to something else.
- ClientObituary() now only looks up the obituary message from the killing player's weapon if the
damage type was 'Melee' or 'Hitscan'.
- Gave P_GunShot() and A_FireBullets the new damage type 'Hitscan'.
- Switched A_Saw and A_CustomPunch to the 'Melee' damage type.
SVN r3646 (trunk)
which should be set for player uses activation but are not.
- Added some developer mode messages for setlinespecial and clearlinespecial.
SVN r3437 (trunk)
- added DECORATE properties for accuracy and stamina.
- Since these changes move properties from player_t to AActor all savegame compatibility code was removed and the min. savegame version bumped.
SVN r3427 (trunk)
named the same as their ACS function equivalents. e.g. From DECORATE, you can now use
ACS_NamedExecuteAlways to run a script with a name.
SVN r3364 (trunk)
major change, so I'm making no provisions for using older FMOD DLLs when compiled with the
4.38 API. However, sound positioning is still broken like in 4.28, so you are recommended
to continue building with 4.26. Also, the Freeverb-based DSP unit is no longer present in
FMOD, so the underwater effect is currently unavailable when using 4.38 until I can figure
out how to make it work with the SFX Reverb unit instead. (And on that topic, the Freeverb
DSP was officially only for stereo outputs, so I really shouldn't have been using it in the
first place.)
- Since I would like to eventually figure out the sound positioning issues with the newer
FMODs, the following have been added:
* snd_drawoutput now labels its outputs with the speakers they represent.
* DCanvas::DrawTextA was added as an alias for DrawText, since the Windows headers #define
DrawText to a Unicode/non-Unicode variant.
* The loopsound console command was added to spawn an actor at the player's location and
have it loop a sound infinitely.
Hopefully I can figure it out. FMOD's 3D example works, so I assume the problem lies with
my code, though I don't really know where to begin looking for the problem.
SVN r3350 (trunk)
Includes:
- Made the move tried from checking missile spawns ignore drop off height. This solves the Voodoo Gun ghostly civilian issue.
- Fixed: the NOTELEPORT flag is removed from Dehacked missiles which lose the MISSILE flag. This caused problems with certain special effects based on dehacked spawn cubes.
- Fixed: all Boom silent teleporters preserve relative height.
- support for palette independent particle colors if the renderer can handle them.
SVN r3329 (trunk)
be made to clamp other actors' pitches to within the range (-90,+90)
degrees with the SPF_FORCECLAMP flag.
- Transmit the local viewpitch limits to the other players.
SVN r3323 (trunk)
* Fixed possible crash when texture for menu item patch cannot be loaded. (From Alexey's Mac OS X port.)
* Fixed iwadinfo.txt definitions of Hexen and Freedoom demos (also from Alexey's port.)
* Added missing LOF_NOJUMP definition.
SVN r3284 (trunk)
- Fixed: FadeTo() accepted parameters out of range.
- Fixed: "Enable autosaves" menu option didn't handle all possible values of disableautosave.
SVN r3280 (trunk)
also decided to compile some other shaders slightly differently, too.)
- Fixed: The InGameColormap had been designed without taking alpha into consideration.
As the least likely parameter to be used, desaturation has been moved into a constant
register to make room for the alpha parameter to live in the vertex's color value.
SVN r3208 (trunk)
ignored the Y locations of patches drawn on two-sided midtextures and always drew them at the
top of the texture. Added a compatibility flag.
SVN r3205 (trunk)
- allow setting 'Shadow' as default fuzz effect
- changed CVAR conversion that strings 'false' and 'true' get evaluated as integers 0 and 1 respectively so that changing boolean CVARs to int does not destroy their values.
SVN r3076 (trunk)
- zipdir will no longer store files ending in '~' on Linux.
- Added st_oldouch which restores the old ouch face behavior of only showing when health increases by 20 while taking damage.
SVN r3035 (trunk)
* Font and color for map name can be set if it's not a titlepatch
* 'Finished' and 'Entering' can be either patches or a printed text in all gamees now.
* Font and color for 'finished' and 'entering' text can be set.
* moved 'finished' and 'Now entering:' texts into string table.
SVN r2981 (trunk)
- set 'cursor' as default for Action Doom 2. Doom's bunny is probably not the best thing here...
- made cursor user-settable in the menu.
SVN r2855 (trunk)
* the sprite used for 'pause'.
* the factor with which a monster's health is multiplied to decide if it's supposed to be gibbed,
* the decision to make monsters run faster in nightmare mode.
- moved the hard coded lock messages for lock types 102 and 103 into the language lump.
- fixed: Raven's fast monsters could become slower in Nightmare if they had very short walking states.
SVN r2834 (trunk)
- Locks can now define more than one LockedSound by separating them with commas. The default setting
for this property is now "*keytry", "misc/keytry". The first sound that is defined is the one that will
be played for the lock. Thus, for standard locks, if the player class defines *keytry, that will be
played. Otherwise, misc/keytry will be played as before.
SVN r2827 (trunk)
- allow specifying the fractional precision for the numbers behind the sliders.
- took all HUD related options out of the display options menu and created a seaparate one for them.
- added several more display and HUD options to the menu.
- created a new 'Miscellaneous options' menu for a few items that should be accessible but don't fit anywhere else.
SVN r2795 (trunk)
- allow all texts in conversations to reference the string table.
- fixed: If no dialogue is found for the current map, SCRIPT00 should still be loaded.
SVN r2577 (trunk)
- fixed: AActor::CanSeek had the check for the visibility of the target actor's alpha reversed.
- added an Alt HUD icon for Hexen's fighter's fist.
SVN r2501 (trunk)
- Added character alignment parameter to font monospacing.
- Fixed: character shadows were not scaled.
- Heretic keys now have an icon associated with them so that they can be drawn through drawkeybar.
- Replaced the built in Heretic and Hexen status bars with SBarInfo equivalents.
SVN r2353 (trunk)
- Added: alpha command to SBarInfo which allows you to increase the translucency for certain parts of the status bar.
- Added: reverse flag for drawkeybar which reverses the order in which rows are filled with keys.
- Changed a gamemode statement to an else in the Doom hud since the frag count and keys should never be shown at the same time.
SVN r2351 (trunk)
A_FadeTo(float target, float amount = 0.10, bool remove = false)
Alters transparency towards target by amount. If remove is true, the actor is destroyed if it reaches target.
SVN r2305 (trunk)
It will use negative indices for this. Currently supported strings are level name, level lump name and
skill name.
- Extended skill definitions so that printable name and image lump name are separate fields so that a
printable name can be specified for Doom, too.
SVN r2294 (trunk)
- Added new sprite #### and frame character # to specify the behavior of sprite ---- on a
per-sprite and per-frame basis respectively.
SVN r2291 (trunk)
- extended compatibility text to allow changing line flags and setting line specials on specific linedefs.
- removed Strain MAP07 hack and replaced it by a clean 'clearlineflags' option.
- Added Doomo format translations for Sector_CopyScroller because this looks like something that might be useful for making
some Boom maps work without having to resort to compatibility.txt.
- added a compatibility setting for UAC Ultra MAP07 which exploited some undefined scrolling behavior in Boom.
(What lengths are we going to make sloppily created maps work? This entire commit was just to address this particular problem...)
SVN r2280 (trunk)
an empty string and no string. To restore the original behavior the default initialization of
the pickup message is now done in the DECORATE definition of Inventory.
SVN r2244 (scripting)
- fixed memory leaks in SBARINFO and WAD loading code.
- added GetBloodColor and GetBloodType inline functions to AActor to wrap the GetMeta calls used for this.
SVN r2234 (trunk)
- Added an option to parse lumps named ZMAPINFO in place of MAPINFO. Any MAPINFO lumps in files containing
a ZMAPINFO lump will be completely ignored. This is to allow ZDoom specific definitions which are incompatible
with other engines capable of reading MAPINFO. Any ZMAPINFO lump must be in the new MAPINFO format.
SVN r2208 (trunk)
of this:
* A cluster's flat definition can now be preceded by a $ to do a string table lookup.
* Since the standard flat names are now in the LANGUAGE lump, the normal Dehacked substitution
for these is no longer handled specially and so will not be automatically disabled merely
by providing your own MAPINFO.
SVN r2195 (trunk)
running with the checked VM can be quite slow, since it has asserts everywhere. Some other
fixes were needed before the code actually worked:
- A_CallSpecial needs to have its arguments cast to ints.
- Some functions that set pnum/paramnum directly did not decrement it by 1. This also applies
to A_Jump, though it just uses the value of paramnum instead of changing it.
- Renamed pnum in the PARAM macros to paramnum, since pnum is already used in a few other
places for something different, so this makes searching for it easier.
This has not been tested especially thoroughly, but a first glance seems to indicate success.
SVN r2163 (scripting)
This is compatibility optioned with COMPAT_STAIRINDEX. Also added a compatibility setting for
Eternal Doom MAP25 which relies on Doom's original broken behavior.
- added a few sanity checks for duplicate actor names in DECORATE. ZDoom will now print more warnings
and all crash cases should be properly handled but since this is still an error this will not work
properly in all circumstances. For example, if you have a duplicate name all classes that inherit
from the original definition will not survive a savegame if they reference a state belonging to that
class at the point of saving.
- Print 'tried to register class more than once' in red to highlight it.
- fixed: actors may not replace themselves.
SVN r2158 (trunk)
they are both created by the first-stage Sigil. AlienSpectre3 should have also been
immune to them but was not. In addition, Macil1 was erroneously immune to V1, when he should
not be immune to any spectral damage. (Though, since he's immortal, all that really amounts to
is that he can enter his pain state.)
SVN r2106 (trunk)
a mild performance increase it's not what I hoped it would do...
- Moved portal initialization for the portal things to P_SpawnSpecials
instead of having the things self-initialize in PostBeginPlay. This was
done to ensure that the portals are fully set up when the game begins.
Otherwise there is no decent way to let the renderer post-process this
information during setup.
- Changed: For 800x600 the default scaling handling of the options menu
makes it become too small so for any resolution with a width between
800 and 959 it has been reverted to the regular clean scaling factor.
SVN r2055 (trunk)
- added compatibility option to invert sprite sorting. Apparently Doom.exe
originally sorted them differently than most source port and on some maps
which depends on this it doesn't look right (e.g. Strain MAP13)
SVN r2031 (trunk)
The editor number for player start spot 5 is now stored in the game info
so that there's only one place where this check needs to be done.
- Fixed: WIF_NOAUTOAIM only worked for projectiles unlike Skulltag's original
implementation.
SVN r1997 (trunk)
* when a logical condition was rewritten and inverted, one of the boolean test wasn't inverted along the rest. So the "monster must not be a player" was accidentally changed into "monster must be a player", which is usually going to be false... There's another minor, but related issue.
SVN r1948 (trunk)
A_SetUserVar/SetUserVariable/GetUserVariable now take a variable name
instead of an array index. A_SetUserArray/SetUserArray/GetUserArray
have been added to access elements in user-defined arrays.
SVN r1933 (trunk)
but should use the camera position instead to get the correct position for
the closest point along the trail.
- Fixed: Explosions no longer caused splashes.
- Fixed: Copying translations to lower decals had the shade color check wrong.
- Fixed: Waggling floors did not move attached geometry.
- Cleaned up p_floor.cpp so that related parts of the code are grouped together.
SVN r1926 (trunk)
a different default terrain than a generic solid surface.
- added format char processing to A_Print(Bold) and all printable messages
that can be defined in DECORATE.
- Fixed: The railgun code ignored MF3_ALWAYSPUFF.
- added desaturated translations.
- added optional state parameters to A_ReFire and A_GunFlash and A_CountdownArg.
SVN r1921 (trunk)
Mobility Radeon 9000 (on a PCI card, no less!), I have decided to give the
PS14 support some loving: D3D windowed gamma now works on these cards using
a texture lookup for the gamma table. Sadly, this halves my framerate, so
setting gamma to 1 will skip the gamma correction, as it was before, for
full speed. (On my 8800 GT, the gamma correction was free.)
SVN r1898 (trunk)
into the FastProjectile base class and removed the native MageWandMissile
class, using the generic functionality instead.
- Fixed: GetReplacement and GetReplacee always checked the skill definitions,
even if they weren't supposed to be used. It was also missing a range check
for 'gameskill'.
SVN r1894 (trunk)
completely ignore them, either).
- Separated light level fixing out of player_t's fixedcolormap parameter.
Using a fixed light level (e.g. PowerTorch) will no longer wipe out
colored lighting.
- Moved the blending rectangle drawing into a separate discrete stage, since
doing it while copying the 3D view window to the display now blends
underneath the weapon instead of on top of it.
- Consolidated the special colormaps into a single 2D table.
- Tweaked the special colormaps slightly to make the true color results more
closely match the paletted approximations.
- fb_d3d9_shaders.h was getting unwieldy, so I moved the shaders out of the
executable and into zdoom.pk3. Shaders are still precompiled so I don't need
to pull in a dependancy on D3DX.
- Added a few more shaders to accomodate drawing weapons with all the in-game
lighting models. These are accessed with the new DrawTexture tags
DTA_SpecialColormap and DTA_ColormapStyle.
- Player weapon sprites are now drawn using Direct3D and receive all the
benefits thereof.
SVN r1858 (trunk)
- Derive PClass from dobject.cpp. This has one major ramification: Since the PClass
is not allocated until runtime, you cannot initialize any static/global data
structures with pointers to PClasses using RUNTIME_CLASS. Attempting to do so
will just initialize with a NULL pointer. Instead, you can initialize using
the address of the pointer returned by RUNTIME_CLASS and dereference that. By
the time you have an opportunity to dereference it, it will no longer be NULL.
- Sync CmakeLists.txt.
- Random fixes for problems GCC spotted.
SVN r1852 (scripting)
BOUNCE_MBF and BOUNCE_UseSeeSound, too, when clearing one of these flags.
- Fixed: When adding the AVOIDMELEE code the code was accidentally changed so that
friendly monsters could no longer acquire targets by themselves.
- Renamed WIF_BOT_MELEE to WIF_MELEEWEAPON because it's no longer a bot only flag.
- Added MBF's monster_backing feature as an actor flag: AVOIDMELEE.
SVN r1848 (trunk)
* Moves the dog sound out of the Doom-specific sounds in SNDINFO to address this,
* Renames the dog actor to MBFHelperDog to prevent name conflicts,
* Adds APROP_Score to CheckActorProperty,
* Completes the randomspawner update (the reason I moved the recursion counter out of
special1 was that I found some projectiles had this set to them, for example in
A_LichAttack, but I forgot to add transfer for them),
* Provides centered sprites for beta plasma balls if this is deemed deserving correction.
SVN r1847 (trunk)
- added thing activation types for BUMPSPECIAL and USESPECIAL. Also added
a new ClearSpecial flag to the activation type.
- added MBF's code for dogs jumping down, controlled by the MF6_JUMPDOWN
flag.
SVN r1835 (trunk)
The range checks this protected against can be safely omitted now that the misc fields are large enough.
- added MBF Dehacked emulation.
SVN r1824 (trunk)
* MBF's dog (definition only, no sprites yet.)
* User variables. There's an array of 10. They can be set and checked in both DECORATE and ACS.
* Made the tag name changeable but eliminated the redundancy of having both the meta property and the individual actor's one. Having one is fully sufficient. TO BE FIXED: Names are case insensitive but this should better be case sensitive. Unfortunately there's currently nothing better than FName to store a string inside an actor without severely complicating matters. Also bumped savegame version to avoid problems with this change.
SVN r1823 (trunk)
- Added more things from Gez's experimental build:
* MBF grenade and bouncing code.
* Arch Vile ghosts emulation (only for compatibility.txt.)
* Several MBF related compatibility options.
SVN r1821 (trunk)
* info CCMD to print extended actor information (not fully implemented yet)
* summonmbf CCMD.
* Beta BFG code pointer (but not the related missiles yet.)
* PowerInvisibility enhancements.
* ScoreItem with one significant change: Added a score variable that can be
checked through ACS and DECORATE. The engine itself will do nothing with it.
* Nailgun option for A_Explode.
* A_PrintBold and A_Log.
* A_SetSpecial.
SVN r1819 (trunk)
- moved default item drop style into gameinfo.
- moved default respawn time into gameinfo.
- moved default inventory max amount into gameinfo.
- turned Heretic's blocking of the sector for LS_Plat_RaiseAndStayTx0 into
a parameter instead of having the game mode decide.
SVN r1812 (trunk)
- Fixed: Even though P_DamageMobj checked an attack's originator
for MF2_NODMGTHRUST the same check was missing from P_RadiusAttack.
- Fixed: A_MinotaurRoam should not assume without check that it was
called by a MinotaurFriend.
- Fixed: The Minotaur declared A_MntrFloorFire which it did not use.
- Fixed: All Spawnspot functions did not check for a spot tid of 0 as
the script's activator.
- Fixed: Friendly monsters ignored team association of their owning
players.
SVN r1770 (trunk)
max health as the mug shot max health, zero uses 100 as the mug shot max
health, and positive values used directly as the mug shot max health.
SVN r1757 (trunk)
in the gameinfo.
- Added Yes/No selections for Y/N messages so that you can answer them
entirely with a joystick.
- Fixed: Starting the menu at the title screen with a key other than Escape
left the top level menu out of the menu stack.
- Changed the save menu so that cancelling input of a new save name only
deactivates that control and does not completely close the menus.
- Fixed "any key" messages to override input to menus hidden beneath them and
to work with joysticks.
- Removed the input parameter from M_StartMessage and the corresponding
messageNeedsInput global, because it was redundant. Any messages that want
a Y/N response also supply a callback, and messages that don't care which
key you press don't supply a callback.
- Changed MKEY_Back so that it cancels out of text entry fields before
backing to the previous menu, which it already did for the keyboard.
- Changed the menu responder so that key downs always produce results,
regardless of whether or not an equivalent key is already down.
SVN r1753 (trunk)
