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1993-03-26
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Scattered Clouds
Version 1.0
Cloud coverage for the Microsoft
Flight Simulator v4.0
(c) 1993 - John Mechalas
This program is shareware. It may be distributed freely provided that
no files are modified in any way, all the original files in this archive
are distributed with it, and that no money is charged for the files
provided therein.
- Overview -
The CLOUDS menu of Flight Simulator is limited at best, and the FS
rendition of partial/scattered cloud coverage is certainly not what it
could be. After playing around a lot with subLOGIC's ATP, I developed
a great affinity for their renderings of such scattered cloud coverage,
and I wanted to create a somewhat equivalent version for Flight Sim.
Through the use of the Aircraft and Adventure Factory, and a little
editing of the .SC0 files, I was able to create a small but very
powerful scenery file that can be used to display scattered clouds in
any of your A&SD scenery files. In order to maximize flexibility, the
number of clouds can be controlled AND CHANGED from within Flight
Simulator. Thus, you don't have to recompile your scenery files in
order to increase or decrease the number of clouds shown! How this
is accomplished will be described in Section 1, and in Section 2, I
will tell you how to go about adding clouds to your own scenery files.
A smaple scenery file is included so that you can quickly jump into
Flight Simualtor and see how the final product looks.
In addition, the scenery files take advantage of the "repeating
scenery object" effects in Flight Simulator, so if you fly outside of
the boundary of your scenery files, the clouds will be repeated
throughout the sky until a new scenery file is loaded. Thus, the cloud
coverage will never stop, and can be seen all over the skies in all
directions. :)
- What You Need -
The scenery files are in the form of .SC0 files, so you will need
SEE4 in order to enhance your existing scenery files. In addition, you
will also need (of course) the Aircraft and Scenery Designer.
Section 1: Viewing the Clouds
1.1 - Controlling the number of clouds
This scenery file is unique in that objects can be "turned on and
off" withing Flight Simulator itself, and without having to recompile
the scenery files. It is this feature that makes Scattered Clouds the
most flexible "cloud cover" sceneries available.
You will note that two files, CLOUD1.SC0 and CLOUD2.SC0, are included
in this package. This allows you to add two, individually controllable
cloud layers to your scenery (why this is, is explained below)
To control the number of clouds displayed, go into Flight Simulator
Menu 2 (Environemnt), Section B (Clouds). Here, you see FS's standard
cloud menu. Look at selections 3 and 7: these two items control the
cloud coverage for FS's own clouds, levels 2 and 1, respectively. It
is these two selections that I use to control the number of clouds
displayed by Scattered Clouds. Note that you should set the level 1
and level 2 cloud altitudes to zero so that Flight Simualtor doesn't
display it's *own* clouds, in addition to the ones in my scenery file.
The Level 1 Cloud Coverage controls the clouds in CLOUD1.SC0.
There are six "groups" of clouds that can be displayed. By setting the
Level 1 Cloud Coverage to 2/8, two groups of clouds will be displayed.
By setting this coverage to 6/8, all six groups will be displayed. Note
that changing coverage to 7/8 or overcast will not result in any addition
clouds (I am making no attempt to cover the sky entirely, just allow FS
users to select an amount of cloud coverage that suites their fancy).
This is how you can control the scattered cloud coverage while in Flight
Simualtor.
The Level 2 Cloud Coverage controls the clouds in CLOUD2.SC0, and
operation is identicle to CLOUD1.SC0. These two files allow you to
add two, independantly controllable levels of scattered clouds.
1.2 - The Sample File SAMPLCLD.SC1
Just to get you familiar with the Scattered Clouds scenery, a sample
file, called SAMPLCLD.SC1, is included, along with a mode SAMPLCLD.MOD
that sets cloud coverage for 8000 and 20000 feet MSL. To display this
file, load the SAMPLCLD.MOD file (which will place you at Meigs Field
in Chicago) and load the SAMPLCLD.SC1 file from your Aircraft and
Scenery Designer. You can also merge this file into any existing Chicago
area scenery that you have, if you wish. :)
If you look at the CLOUDS menu in Flight Simualtor, you will see that
the level 1 clouds (at 8000 feet) are set to a 6/8 coverage, and the
level 2 clouds (at 20000 feet) are set to 3/8 coverage.
Section 2: Adding Clouds to Your Scenery
Both of the CLOUDx.SC0 files are SEE4 Library files, and they must be
placed in the LIB sub-directory of your SEE4 directory. In addition,
two macro files, CLOUDx.MAC are included to aid you in your endeavors,
and they must be located within your SEE4 directory.
To add clouds to your scenery, run SEE as normal and create an
enhancement file. Add the following lines to create scattered clouds
controlled by Level 1:
ALTITUDE, xxxxx
MACRO, CLOUD1
Set the altitude to whatever altitude where you want your clouds to
appear. At this point in time, there is no way to control the altitude
from inside of Flight Simulator, and due to the nature of the scnery file
formats, I seriously doubt that this is even possible. So, if you want
to change the altitudes of your clouds, you must re-compile using SEE4.
Add the following lines to create scattered clouds controlled by
Level 2:
ALTITUDE, xxxxx
MACRO, CLOUD2
Again, set the altitude to whatever altitude you where want your clouds
to appear.
IMPORTANT: DO NOT ATTEMPT TO MAGNIFY THE SCENERY OR MODIFY THE RANGE
OF VISIBILITY. The scenery is created with the proper combination of
scaling and visual ranges needed to gurantee repeatability and ample
cloud coverage! If you change these numbers, you may not get the proper
results! Only adjust the range and scaling if you abosultely, positively
know EXACTLY what you are doing!
Each macro adds three copies of the respective CLOUDx.SC0 file into
your scenery file. This means that adding a level of clouds increases
the size of your scenery file by 6174 bytes (so, if you add both Level 1
and Level 2 clouds, your scenery file will be 12348 bytes larger).
You can add more levels if you want, but remember that only two levels
will be independantly controllable. So, if you add CLOUD1.SC0 four
times, all four of those cloud groups will be controlled simultaneously
by the Level 1 Cloud Coverage menu.
That's all folks....if you have any questions, you can reach me at the
address(es) listed in the README.1ST file. I appreciate any comments
or suggestions that you may have.
Happy flying!