-----------------------------------
Microsoft Urban Assault Readme File
July 1998
-----------------------------------

(c) Copyright Microsoft Corporation, 1998

Thank you for purchasing Microsoft Urban Assault. This Readme file contains 
the most recent information concerning Urban Assault. If you have trouble 
operating the game, please read through the sections outlined below.

For detailed instructions on starting and playing multiplayer games and notes 
on multiplayer issues, see the file Multipla.txt, located in the Urban 
Assault root directory (the default installation path is 
c:\Program Files\Microsoft Games\Urban Assault\) and also accessible from 
the Troubleshooting section of online Help.

--------
CONTENTS
--------

0. EASY LEVELS
1. SYSTEM REQUIREMENTS
   1.1  Minimum System Requirements
   1.2  Optional
2. GENERAL TROUBLESHOOTING
3. VIDEO CARD ISSUES
   3.1  Video Card Drivers and Manufacturers
   3.2  Specific Video Card Issues
   3.3  General Video Card Issues
4. SOUND CARD ISSUES
5. MOVIE ISSUES
6. GAMEPLAY NOTES
   6.1  Joystick, Keyboard, and Mouse Controls
   6.2  Single-Player Missions
   6.3  Saving and Loading Games
   6.4  Messages
7. ADDITIONAL FEATURES
8. PRINT DOCUMENTATION CHANGES
9. THE ENERGY SYSTEM
   9.1  Power Management Tips
   9.2  Power Station Strategies
   9.3  Energy Absorption
   9.4  Efficiency and Sector Ownership
   9.5  Emissions, Proximity, and Drainage

--------------
0. EASY LEVELS
--------------

Urban Assault is a fun yet challenging real-time strategy game of a new 
class. Because of this, a few players may find the normal mission levels 
difficult at first. To train for these normal missions, several premodified, 
easier levels have been included in the Goodies folder of the Urban Assault 
compact disc. Only half of the normal levels, however, have been converted 
into these easier levels; therefore, you will not encounter the Sulgogars 
or the Black Sect, nor will you ever reach the Parasite, until you play the 
game as it was originally conceived.

To play the easy levels

1. Install Urban Assault as a Typical or Complete installation.
2. Copy all of the easy-level .ldf files from the following location on the 
Urban Assault compact disc: Goodies\Levels\Single\. (To do this, insert the 
Urban Assault compact disc into the CD-ROM drive. Launch Windows Explorer, 
and then click the plus sign next to the Urban Assault icon. Click the 
Goodies, Levels, and then Single folders. Press CTRL+A to select all the 
.ldf files, and then press CTRL+C to copy them.)
3. Paste these .ldf files to 
c:\Program Files\Microsoft Games\Urban Assault\Levels\Single or to the 
location you installed Urban Assault on your hard drive. (To do this, in 
Windows Explorer, click the Program Files, Microsoft Games, Urban Assault, 
Levels, and then Single folders. Press CTRL+V to paste the .ldf files into 
the Single folder on your hard drive.) This replaces the normal levels with 
the easy levels.
4. To begin your easy-level campaign, start Urban Assault.
5. On the Main Menu, click Save/Load, and then click New. (Note that the 
easy-level files will not work correctly with your existing saved games.)
6. Enter a name, and then click OK. Start playing!

To restore the normal levels once you are done with the easy levels

1. Copy all of the normal-level .ldf files from the following location on 
the Urban Assault compact disc: Game\Levels\Single\. (To do this, insert 
the Urban Assault compact disc into the CD-ROM drive. Launch Windows 
Explorer, and then click the plus sign next to the Urban Assault icon. 
Click the Game, Levels, and then Single folders. Press CTRL+A to select 
all the .ldf files, and then press CTRL+C to copy them.)
2. Paste these .ldf files to 
c:\Program Files\Microsoft Games\Urban Assault\Levels\Single or to the 
location you installed Urban Assault on your hard drive. (To do this, 
click the Program Files, Microsoft Games, Urban Assault, Levels, and then 
Single folders. Press CTRL+V to paste the .ldf files onto your hard drive.) 
This replaces the easy levels with the normal levels.
3. To begin your normal-level campaign, start Urban Assault.
4. On the Main Menu, click Save/Load, and then click New. (Note that the 
existing games saved during the easy levels will not work correctly.)
5. Enter a name, and then click OK. You are now ready to fight your way to 
the Parasite. Good luck!

----------------------
1. SYSTEM REQUIREMENTS
----------------------

1.1  Minimum System Requirements
--------------------------------

** Multimedia personal computer with a Pentium 133 MHz or equivalent 
processor.
** Windows 95 operating system or higher.
** 16 megabytes (MB) of RAM.
** 100 MB of free uncompressed hard disk space.
** Quad-speed CD-ROM drive.
** Local bus Super VGA video card with 1 MB of VRAM.
** Windows-compatible sound card plus speakers or headphones.
** Microsoft Mouse or compatible pointing device.

1.2  Optional
-------------

** 3-D graphics accelerator card compatible with the Direct3D API for best 
graphics quality. (Note that some 3-D accelerator cards may not be fully 
compatible with the 3-D acceleration features of Urban Assault.)
** 28.8 or higher baud modem for head-to-head play.
** Internet access for play on the Microsoft Internet Gaming Zone (connect 
time charges may apply).
** Joystick controller (Urban Assault supports force feedback input devices 
compatible with the DirectInput API).

--------------------------
2. GENERAL TROUBLESHOOTING
--------------------------

If you are having trouble running Urban Assault, the following 
troubleshooting items may be enough to fix the problem.

1. Close all other running applications, such as your email program and word 
processor.
2. Close all anti-virus programs.
3. Do not press ALT+TAB, especially when running Setup.
4. Upgrade all video and sound card drivers. Outdated drivers may cause 
problems with the graphics and sound quality of Urban Assault.
5. Close all terminate-and-stay-resident, or TSR, programs and those that 
have interrupting messages.

The most thorough way to close all programs is to press CTRL+ALT+DEL once. 
In the Close Program dialog box, select each program, and then click End 
Task. Do this for all programs in the list, except for Explorer and Systray.

--------------------
3. VIDEO CARD ISSUES
--------------------

3.1  Video Card Drivers and Manufacturers
-----------------------------------------

IMPORTANT: Please make sure that you have the latest drivers from the 
manufacturer of your video card. Many of the issues listed in this section 
will be resolved if you install your video card's latest drivers. Listed 
below are some common video card manufacturers' Web sites. You can also 
directly access these links by opening videoWWW.htm, located in the Urban 
Assault root directory (the default installation path is 
c:\Program Files\Microsoft Games\Urban Assault\).

3D/fx Interactive  --  http://www.3dfx.com/
3Dlabs  --  http://www.3dlabs.com/
AccelGraphics  --  http://www.accelgraphics.com/
Asus  --  http://www.asus.com/
ATI  --  http://support.atitech.ca/
California Graphics  --  http://www.calgraph.com/
Canopus  --  http://www.canopuscorp.com/
Creative Labs  --  http://www.creativelabs.com/
Deltron Flash 3D  --  http://www.deltrontech.com/
Deltron Technology  --  http://www.deltrontech.com/
Diamond Multimedia  --  http://www.diamondmm.com/
Elsa Technology  -- http://www.elsa.de/
Gateway 2000  --  http://www.gw2k.com/
Genoa  --  http://www.genoasys.com/
Guillemot  --  http://www.guillemot.com/
Hercules  --  http://www.hercules.com/
I/O Magic  --  http://www.iomagic.com/
Intergraph  --  http://www.intergraph.com/
Ixmicro  --  http://www.ixmicro.com/
Jaton  --  http://www.jaton.com/
Jazz Multimedia  --  http://www.jazzmm.com/
Leadtek  --  http://www.leadtek.com/
Matrox  --  http://www.matrox.com/
Metabyte  --  http://www.metabyte.com/
Miro  --  http://www.miro.de/
NewCom  --  http://www.newcominc.com/
Number Nine  --  http://www.nine.com/
NVIDIA  --  http://www.nvidia.com/
Orchid  --  http://www.orchid.com/
Quantum3D Obsidian  --  http://www.quantum3d.com/
Real3D  --  http://www.real3d.com/
S3 Incorporated  --  http://www.s3.com/
Sierra On-Line  --  http://www.sierra.com/
Skywell Magic 3D  --  http://www.magic-3d.com/
STB  --  http://www.stb.com/
TechWorks  --  http://www.techworks.com/
Tseng Labs  --  http://www.tseng.com/
VideoLogic  --  http://www.videologic.com/


3.2 Specific Video Card Issues
------------------------------

Listed below are specific video cards that are known to have configuration 
issues with Urban Assault.


3D/fx Interactive Video Cards

ISSUE: With a Voodoo-based video card, you cannot play Urban Assault at a 
resolution higher than 640 x 480. If you have a 12-MB Voodoo2, the highest 
resolution you can run at is 800 x 600.


3DLabs Incorporated Video Cards

ISSUE: With a 3DLabs Incorporated video card, the graphics may look 
pixilated or grainy.

Suggestion: This issue is fixed with the latest drivers. Install the latest 
drivers.


ATI Video Cards

ISSUE: When using the retail drivers provided by the manufacturer, the ATI 
3D Rage Pro video card may not be recognized as a Direct3D Device option 
(Primary Display Driver) on the Options screen.

Suggestion: Install the latest drivers. If the problem persists, please 
contact your hardware manufacturer.

ISSUE: With the ATI Xpert@work video card, smoke, weapons fire, and parts 
of buildings and vehicles may be rendered incorrectly. Some may look 
cylindrical or arrow-shaped or appear to move.

Suggestion: Install the latest drivers. If the problem persists, please 
contact your hardware manufacturer. Alternatively, turn on or off the 
DrawPrimitive and/or 16-Bit Textures options on the Options screen.


Diamond Stealth Video Cards

ISSUE: With the Diamond drivers, the Diamond Stealth 3D 3000 video card may 
not be recognized as a Direct3D Device option (Primary Display Driver) on 
the Options screen.

Suggestion: Try installing the latest drivers. If the latest Diamond drivers 
fail to recognize your video card as a Direct3D Device option, install the 
latest S3 ViRGE VX drivers. If the problem persists, please contact your 
hardware manufacturer.

ISSUE: With the Diamond Stealth 64 video card, the introductory movie and 
cut scenes may have bright green horizontal lines running across the screen. 
The movies play correctly and the sound can be heard, but the movies can 
only be seen where the green lines are not present.

Suggestion: Install the latest drivers. If the problem persists, please 
contact your hardware manufacturer.


Hercules Stingray Video Cards

ISSUE: With the Hercules Stingray video card, the game may freeze after 
clicking Start Mission on the Level Select screen.

Suggestion: This issue is fixed with the latest drivers. Install the latest 
drivers.


Matrox Millenium II Video Cards

ISSUE: With the Matrox Millenium II video card, the seams between polygons may 
be visible and sometimes flashing with lighter textures showing.

Suggestion: Install the latest drivers. If the problem persists, please 
contact your hardware manufacturer.


Number Nine Inc. Video Cards

ISSUE: You may encounter a problem with some Number Nine Inc. video cards 
involving issues with transparencies and alpha-blended textures -- that is, 
objects that should be transparent are not, or objects that should be smooth 
and three-dimensional in appearance are sharp or jagged. This is something 
that is unique to these cards.

Suggestion: Please contact Number Nine Inc. (http:\\www.nine.com\) for more 
information on this issue.


Permedia 2 Video Cards

ISSUE: With the Permedia 2 video card at a game resolution of 512 x 384, 
there may be considerable corruption of the game screen.

Suggestion: Install the latest drivers. If the problem persists, please 
contact your hardware manufacturer. Alternatively, turn on or off the 
DrawPrimitive and/or 16-Bit Textures options on the Options screen.

ISSUE: With the Permedia 2 video card, switching the views of the game 
screen while playing (jumping into a vehicle, cycling through the gun turrets, 
and so on) may cause the textures of some buildings to become corrupt and 
psychedelic in appearance.

Suggestion: Install the latest drivers. If the problem persists, please 
contact your hardware manufacturer.


STB Nitro 3D Video Cards

ISSUE: The STB Nitro 3D video card may not be recognized as a Direct3D 
Device option (Primary Display Driver) on the Options screen.

Suggestion: Try installing the latest drivers. If the latest drivers fail 
to recognize your video card as a Direct3D Device option, install the 
latest S3 ViRGE VX drivers. If the problem persists, please contact your 
hardware manufacturer.


STB Velocity 128 (TV Support) Video Cards

ISSUE: When using the retail drivers with the STB Velocity 128 (TV Support) 
video card, the screen may become black after the introductory movie. To 
return to the desktop, press ESC or ALT+F4.

Suggestion: This issue is resolved with driver version 4.10.0.0166 and all 
later versions. Install the latest drivers. If the problem persists, please 
contact your hardware manufacturer.


3.3  General Video Card Issues
------------------------------

ISSUE: Some video cards, although they are considered 3-D-compatible, still 
exhibit problems when rendering 3-D graphics.

Suggestion: Always be sure you have the latest drivers installed. If you 
still have problems, please contact your hardware manufacturer.

ISSUE: After pressing ALT+TAB to leave the application and then return to 
it, you may have problems such as vehicles without textures and flashing 
2-D elements.

Suggestion: Do not press ALT+TAB. Also, after viewing Help, close your 
browser before returning to the game.

ISSUE: Your frame rate may be slow.

Suggestion: For suggestions on how to improve frame rate, see "Main Menu: 
Options" in online Help.

ISSUE: Currently, some 3-D chipsets (for example, S3 ViRGE VX/GX, 
Millennium 2, and Verite 1000) may not be recognized as a Direct3D Device 
option (Primary Display Driver) on the Options screen.

Suggestion: If installing the latest drivers for your video card does not 
solve this problem, contact your hardware manufacturer. Also note that you 
may get better performance if you select Software in the Direct3D Device 
box on the Options screen.

ISSUE: Sometimes textures may be corrupt or may not be smooth.

Suggestion: Turn on or off the DrawPrimitive and/or 16-Bit Textures options 
on the Options screen.

ISSUE: Not all resolutions listed in the Display Resolution box on the 
Options screen may be supported by the hardware you have installed.

Suggestion: Play in default resolution mode, 640 x 480.

ISSUE: After changing the Display Resolution option on the Options screen, 
there is no affect on the pregame screens, which remain at 640 x 480.

--------------------
4. SOUND CARD ISSUES
--------------------

ESS Sound Cards

ISSUE: With many ESS sound cards, significant sound effects, including 
high-priority messages, may be dropped.

Suggestion: This issue is fixed with the latest drivers. Install the 
latest drivers (http://www.esstech.com/).


Ensoniq Sound Cards

ISSUE: With some Ensoniq sound cards, game sounds may be dropped.

Suggestion: Install the latest drivers. If the problem persists, please 
contact the Ensoniq manufacturer (http://www.ensoniq.com/).

ISSUE: With an Ensoniq Audio PCI sound card, sound effects may crackle. 
The problem may be associated with the game's volume level in relation to 
your computer's speaker and subwoofer volumes.

Suggestion: Install the latest drivers. If the problem persists, please 
contact the Ensoniq manufacturer (http://www.ensoniq.com/).

---------------
5. MOVIE ISSUES
---------------

IMPORTANT: Please make sure that you have the latest drivers from the 
manufacturer of your video card. 

ISSUE: If you have problems starting Urban Assault, the problem may lie in 
the introduction movie.

Suggestion: Install the latest drivers for your video card. If that doesn't 
work, try turning off the movies.

>>>To turn off the movies in the Nucleus.ini file

1. Open the Nucleus.ini file, located in the Urban Assault root directory 
(the default installation path is 
c:\Program Files\Microsoft Games\Urban Assault\).
2. Find the following line in the Nucleus.ini file: gfx.movie_player = on
3. Change this line to the following: gfx.movie_player = off

ISSUE: With the DirectMovie plug-in available for 3Dfx-based video cards, 
you may encounter corruption or hanging at the end of a movie.

Suggestion: If you are using third-party software to render the Urban Assault 
movies, you must disable it.

ISSUE: With the Hercules Dynamite 128 Series video card, you will receive a 
fatal error message if you press ESC to skip through the movie.

Suggestion: Install the latest ET6000 drivers from the Tseng Labs Web site 
(http://www.tseng.com/).

ISSUE: During a video, the Windows 95 taskbar may appear, blocking part of 
the video. After playing a few missions, the taskbar may not appear anymore.

Suggestion: Be sure the Always on Top option for your taskbar is turned off.

-----------------
6. GAMEPLAY NOTES
-----------------

6.1  Joystick, Keyboard, and Mouse Controls
-------------------------------------------

For a list of all joystick, keyboard, and mouse controls, see "Main Menu: 
Input Settings: Default Controls," in online Help. The Urban Assault Survival 
Card provides a quick reference to the default controls.

For complete information on navigating your vehicles, see "Game Interface: 
Vehicle Controls," also in online Help.


Joystick

** On the Input Settings screen, you can only assign functions to buttons 5 
through 8 on the SideWinder and other joysticks. You can assign additional 
functions to buttons 1 through 4, but they will simultaneously perform both 
functions -- the original function and the function you assigned.

** The alternate joystick tank controls method is what your joystick is set 
to upon starting Urban Assault for the first time. To use the default 
joystick method, you must deselect the Alternate Joystick Tank Controls check 
box on the Input Settings screen.

** When using the alternate joystick tank controls method, do not touch your 
hat switch. Use your joystick to control vertical HUD movement and vehicle 
direction, and use the throttle to control vehicle forward and backward 
movement. For specifics on tank controls and navigation, see "Game 
Interface: Vehicle Controls: Navigating Ground Units," in online Help.


Keyboard

** When pressing ALT+any key, the specified key locks. To unlock it, press 
that key again.

** When changing your default controls on the Input Settings screen, you must 
select the function and its corresponding key with the mouse, and then press 
the key you want on the keyboard only once. To save your change, click OK.


Mouse

** If your mouse pointer flickers or you have a difficult time controlling it 
as you select items on the game screen, turn off the Software Cursor option 
on the Options screen.


6.2  Single-Player Missions
---------------------------

** Some technology upgrades will not always be implemented when you get the 
upgrade message; however, they will appear when you advance to the next 
level.

** A user-occupied vehicle will not be taken through the beam gate with you. 
Jump into your Host Station to ensure that all vehicles on the beam gate 
platform will beam to the next level.


6.3  Saving and Loading Games
-----------------------------

** Beware that clicking Last Saved Game on the Level Select screen or 
clicking Load Mission on the Exit Menu will overwrite your current campaign 
progress.

** To ensure that you save your games and do not loose any progress, load all 
saved games from the Save/Load screen. Every time you finish a level, click 
Save/Load on the Level Select screen or on the Main Menu, click Save in the 
Save/Load screen, and then rename your game. For example, if you're playing 
a game called SDU7 and you complete the first level, go to the Save/Load 
screen and save it as SDU7 2, after the second level, save it as SDU7 3, 
and so on.


6.4  Messages
-------------

** The tips that appear while your mission is loading may be difficult to 
read if the mission loads quickly; however, they will be repeated later.

----------------------
7. ADDITIONAL FEATURES
----------------------

Based on Beta feedback, several additions were made after the documentation 
had gone to print. Some highlights are the following:

** As you create vehicles, an effectiveness list appears in the lower right 
of the game screen. This list is a quick reference as to how effective the 
vehicle you are creating is against other classes of vehicles. In addition, 
it shows you the vehicle's effectiveness at acquiring sectors and 
reconnaissance. To review and compare all of your available vehicles' 
effectiveness before actually creating them, click the Create button and 
continue pressing the left mouse button as you drag your pointer over your 
vehicles. The effectiveness list to the right will change according to the 
vehicle your pointer is on.

** In the Squadron Manager, rearranging your squads is easy. To move a unit 
and all of the units to its right, drag it to the desired squad row while 
holding down the right mouse button. To move an individual unit, drag it 
while holding down the left mouse button.

** In the Squadron Manager, as you roll your mouse pointer over each 
vehicle's icon, that vehicle's life bar appears over the top of it.

** Once the beam gate is open, numbers appear on the map over the beam gate. 
The first number indicates how many creation energy units, in the form of 
vehicles, you currently have on the beam gate platform; the second number 
indicates the maximum creation energy units, again in the form of vehicles, 
you are allowed to beam to the next level.

------------------------
8. DOCUMENTATION CHANGES
------------------------

** The Ghorkovian Gigant 2, as referenced in the jewelcase, no longer exists 
among us. The last remaining vessel was destroyed in an off-planet battle, 
heroically.

** Clicking the left mouse button to skip through movies, as referenced in 
the jewelcase, does not work. You must press ESC to skip through movies.

--------------------
9. THE ENERGY SYSTEM
--------------------

As you learn how the Urban Assault energy system works, you will find it 
much easier to manage your resources and concentrate on battling your 
enemies. Study this section and you will more readily advance through 
the mission levels.

A detailed explanation of the Energy Manager can be found in "Game 
Interface: Energy Manager," in online Help. Basic tips and strategies are 
also provided in "Acquiring Energy," "Resource Management," and "Power 
Stations," all in the "Strategies" topic of online Help.


9.1  Power Management Tips
--------------------------

** For the fastest energy reload, beam your Host Station directly on top of 
your strongest power station. Beaming to a power station you own does not 
require any beam energy.

** If your energy absorption is less than 100%, conquer more sectors first 
to reach 100% efficiency and then build more power stations.

** Owning more power stations does NOT guarantee that you absorb more energy 
(see Section 9.4 for details). In some situations -- for example, when you 
do not own a lot of sectors -- the amount of power you absorb can decrease 
if you own too many power stations.

** Once your energy absorption reaches 100%, build a power station right 
next to the one you are already on. This way you absorb energy from both 
of them.

** You can stop the flow to and from each energy reservoir (the Host Station 
life energy, the creation energy, and the beam energy reservoirs) by 
clicking their respective icons on the Energy Manager. Click the icon again 
to allow a free flow of energy.

** Don't forget that power stations can also be used as "free beam points." 
It often makes sense to build a small network of weaker power stations 
(which will not affect your energy efficiency too much), and then use this 
network to beam your Host Station quickly over large distances. Although 
those weak stations are not very useful for energy reload, they serve well 
as outposts from which you can quickly deploy your squads to distant areas 
of the map.


9.2  Power Station Strategies
-----------------------------

There are two main power station strategies: clustering and spreading. 
Which strategy you choose depends on the particular challenge you face at 
each mission level.


Clustering

Build your power stations next to each other to take advantage of their 
cumulative energy emission. The advantage is faster energy reload. The 
disadvantage is that you will not be prepared to beam your Host Station 
to distant areas on the map.


Spreading

Build your power stations throughout the map to build a network of "free 
beam points." The advantage is that you can quickly beam your Host 
Station throughout the map region at no cost in beam energy. The 
disadvantage is slower energy reload.


9.3  Energy Absorption
----------------------

Your energy absorption rate, at the far left on the Energy Manager, 
shows the total amount of energy points you are receiving every 10 
seconds. This rate is based on the following:

1. Your promixity to a power station.
2. The strength of that power station.
3. The efficiency of all your power stations, as indicated by the 
percentage at the far left of your Energy Manager.
4. The strength of your Host Station, which becomes stronger and absorbs 
more energy as you progress through the mission levels.


9.4  Efficiency and Sector Ownership
------------------------------------

Each power station requires a certain number of sectors to support it 
before it can work at 100% efficiency. Owning a strong power station 
but few sectors to support it is not very useful.

Some power stations can emit more energy than others, and this is 
indicated by the number of white boxes in the upper left of each power 
station map sector. To reach 100% efficiency, you must own 16 sectors 
per each white box.

	   ----------------------------------------------
	   Total No. of White	Sectors Required to Reach
  	     Boxes You Own           100% Efficiency
	   ----------------------------------------------
                    1			    16
                    2			    32
                    3			    48
                    4			    64
                    5			    80
                    6			    96
                    7			   112
                    8			   128
                   Etc.			   Etc.
           ----------------------------------------------

For example, if you own two power stations, each with 2 white boxes, 
or one power station with 4 white boxes, you must own 64 sectors to 
reach 100% efficiency.


9.5  Emissions, Proximity, and Drainage
---------------------------------------

Your power stations emit energy to the nearby sectors you own. The 
closer you are to a power station, the more energy you absorb from it. 
This also means that if you are out of your power station's emission 
area, or if you are within range but are not within one of your own 
sectors, you will not absorb any energy from that station. This applies 
to recharging your units as well as to your Host Station. Power stations 
with more white boxes emit more energy and have a larger emission area.

The energy absorbed from power stations can be cumulative -- for 
instance, if you are on top of a power station and you are within the 
emission area of another power station, you will receive energy from 
both of them.

NOTE: Enemy-owned power stations will drain energy away from your units 
and Host Station if you are within these power stations' emission areas 
and are positioned in an enemy sector. The same rules that apply to 
energy absorption also apply to energy drainage: The closer you are to 
the enemy power station, the more energy you lose. Your power stations 
have the same effect on enemy units and host stations.

