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1992-07-10
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GPlay ver .97 Documentation ---- Copyright Wright Engineering 1991,1992
Q. What is a Vectored Graphics Player?
A. A vectored graphics player plays Presentation/Animation files
produced by GDRAW the Vectored Graphics GFX Interpreter. GDRAW will
let you produce quality animations and presentations that are
small enough to go over bbs lines and can be played with a
small (100k) player. In the near future Wright Engineering's
Graphics Bulletin Board System (GBBS) will allow the viewing of
animations and playing on line games with full graphics support,
without having to down load them. In short finally the next
generation graphics BBS will be here.
GDRAW animations and graphics are superior because they
are incredibly small.
Q. What is GFX?
A. GFX is a graphics language designed to produce graphics on a remote
machine at real time speeds allowing complex image movement and
creation on an end users terminal software (Gterm). Since GFX is
a graphics language it must have some sort of interpreter that will
allow the user to produce graphics with a sort of Paint/CAD/Anim
program and then convert those graphics into the GFX language.
GDRAW is that interpreter. GDRAW allows you to draw images, do
animation, text and then stores the images in a file that can then
be played as is with GPLAY
GPlay is an stand alone player that is designed to play files in either
of 2 file formats. Vectored Graphic files that are editible by GDRAW
always end in a .vgX where X indicates one of eight possible screen modes.
Vectored Graphic files that have been compiled by GRel end in an .vrX
extension. GPlay will play either format, compiled (GRel) or uncompiled
(GDraw).
Screen Modes:
GDraw creates it's Presentation/Animations in one of eight different
screen modes (decided at the time of creation). Once the screen mode
has been determined to play that Presentation/Animation on another machine
all you need is the output file and a copy of GPlay. The machine that
you play the Presentation/Animation on must have the proper hardware
support for the file type you are trying to play.
There are eight different Screen modes supported by GPlay:
A: 320-200 4 color graphics 40X25 text NEEDS CGA compatible video
B: 640-200 2 color graphics 80X25 text NEEDS GGA compatible video
C: 320-200 16 color graphics 40X25 text NEEDS EGA low res. video
D: 640-200 16 color graphics 80X25 text NEEDS EGA medium res. video
E: 640-350 16 color graphics 80X25, 80X43 text NEEDS EGA High res. video
F: 640-480 2 color graphics 80X30, 80X60 text NEEDS VGA MONO
G: 640-480 16 color graphics 80X30, 80X60 text NEEDS VGA color video
H: 320-200 256 color graphics 40X25, text NEEDS MCGA color video
FILENAME CONVENTIONS:
1. GDRAW files always end in a .vg extension so if you had a file called
DEMO and it was in F mode then the file name would be DEMO.VGF.
2. GREL files always end in a .vr extension so if you had a file called
DEMO and it was in F mode then the file name would be DEMO.VRF
Note: it is only the second letter in the extension that indicates that
the file is GDRAW or GREL format. The last letter in the extension indicates
the Screen mode necessary to play that animation with GPlay.
INCOMPATIBLE VIDEO HARDWARE
---------------------------
If you try and play a Vectored graphic file and your machine does not
have the video hardware necessary for the file type you are trying to
view Gplay will exit and tell you the screen mode you cannot support.
Graphics Player Features:
* FREELY REDISTRIBUTABLE so others can see your work without charge
* Plays both Graphics File formats .vrX or .vgX
* File can be any size up to limits of DOS
* command line switches gives you control of play options
USAGE:
GPlay input filename.[ext] [/switches]
input filename =valid DOS filename of a vector graphic file without extension
[.ext] =an optional extension, if no extension if given then gplay
will assume a .vr extension, if a file is not found that
meets that name then it will assume a .vg extension, if
that name is not found then GPlay will exit with an error
message.
[/switches] =optional switches that control how GPlay will play the
file see COMMAND LINE SWITCHES for more information.
COMMAND LINE SWITCHES
---------------------
GPlay allows you to specify one or more command line switches that will
allow you to change the operation of GPlay on the file.
Command line switches are specified on the DOS command line in the following
form.
GPLAY TEST.VRG /R
This example will GPlay the file TEST.VRG and the command line switch will
cause the file to continue to loop until a space bar is pressed.
More than one switch can be specified on the command line behind the forward
slash.
example:
GPLAY TEST.VRF /RCT
This example will GPlay the file TEST.VRF (F mode compiled) with time
suppression on and auto repeat without the ability to exit the file
without rebooting.
SWITCHES
--------
C - Cancel Cancel (cannot cancel a playing with the space bar, except end)
R - repeat (play file over and over until you hit SPACE BAR)
T - Time suppression (any pauses in the file are suppressed)
E - Shows elapsed time upon completion of playing
CANCELING A FILE DURING PLAYING
-------------------------------
You can cancel a file that is playing at anytime during it by pressing the
SPACE BAR unless GPlay was invoked with the C switch (Cancel Cancel).
NOTE: If you specify the C switch and at the same time specify the R switch
the file will play over and over and cannot be stopped by pressing the space
bar. ONLY REBOOTING THE MACHINE WILL STOP THE FILE FROM PLAYING OVER.
END OF PLAY
-----------
At the end of play (unless the R switch was specified) a space bar hit will
end GPlays control of the screen and return you to the DOS command line.
This will happen regardless of the C switch. (The C switch only prevents
the user from exiting during the playing, at the end of the file GPlay
will always allow you to exit with the SPACE BAR.)
REDISTRIBUTION OF GPLAY
-----------------------
GPlay is freely redistributable to anyone, or anything you wish. Any art
or animations that you distribute should be with the permission of the
person that made the art. If you do distribute gplay to others please make
sure that this document file is with the program.
If you wish to use GPLAY for commercial purposes then you must use a
PERSONALIZED PLAYER with your company name. Request this when you
send in your registration for GDRAW. See the Gregist.txt file for
more information.
FOR MORE INFORMATION
--------------------
If you wish to find out more about:
GDRAW - GFX vectored Graphics interpreter
GPLAY - Vectored Graphics player
GCHECK - Vectored Graphics file checker
GREL - Graphics Relative Compiler
GFONT - Graphic Font maker
GTERM - GFX terminal software
GBBS - GBBS (Graphics Bulletin Board System)
please contact the Wright Engineering HQ BBS
at 714-847-2548 14.4 HST and below
the board is open from 9 p.m. to 9 a.m. Pacific time
or you may write:
WRIGHT ENGINEERING
19744 BEACH BLVD.
SUITE # 309
HUNTINGTON BEACH, CA.
92648
This board is running WWIV BBS software until the official release of GBBS
which is currently under alpha testing.