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Amiga Plus 1998 #3
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Amiga Plus CD - 1998 - No. 3.iso
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progammon2.3
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progammon.docs
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1997-12-08
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ProGammon v2.3
This program plays a very strong game of backgammon. It was written
using SAS/C version 6.58 and is designed to run on any Amiga with OS 2.04
or higher. It's NTSC but will use an AGA (640 x 480) Multiscan screen if
available.
THE BASICS:
The game begins with the following board setup:
******************************************** Direction of
* 24 23 22 21 20 19 18 17 16 15 14 13 * Movement:
* v v v v v v v v v v v v *
* X O O X * --->
* X O O X *
* O O X * |
* O X * |
* O X * |
* * V
* 3 5 *
* * |
* X O * |
* X O * |
* X X O * V
* O X X O *
* O X X O * <---
* ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ *
* 1 2 3 4 5 6 7 8 9 10 11 12 *
********************************************
^ ^ ^ ^ ^ ^
Your HOME area is positions 1 to 6.
There are 24 positions on the board and each player begins with 15
stones. 'X' represents your stones and the 'O' represents the Amiga's
stones. In the diagram above you have 2 stones on position 24, 3 stones
on position 8 and 5 stones each on positions 6 and 13. The 3 and the 5
in the center of the board represent the dice.
Each player takes turns rolling the dice and moving their stones an
amount equal to whatever was rolled.
The object of the game is to move your stones in a clockwise direction
into your home area. When all 15 stones are home you can remove them
from the board depending on what you roll. The first player who removes
all of their stones from the board wins the game.
The game starts with each player rolling one die to determine which
player gets to go first. For example, if the Amiga rolled a 3 and you
rolled a 5 then you would start by using this combination for your first
move. Here is one possibility:
********************************************
* 24 23 22 21 20 19 18 17 16 15 14 13 *
* v v v v v v v v v v v v *
MOVE 1--> X X O O X *
* O O X *
Using the 3 * O O X *
* O X *
* O <---MOVE 2
* *
* _ _ * Using the 5
* *
* X O *
* X X O *
* X X O *
* O X X O *
* O X X O *
* ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ *
* 1 2 3 4 5 6 7 8 9 10 11 12 *
********************************************
^
With the 3 I moved one stone from position 24 to position 21. For the
second move I moved a stone from position 13 to position 8. After the
opening move each player alternates rolling the dice.
Either player can move to any position as long as it is not blocked by
2 or more of the opposing players stones. In the above example I would
not have been allowed to use the 5 to move a stone from position 24 to
position 19 because the Amiga has position 19 blocked.
It is possible to move to a position that has only 1 Amiga stone on
it. When this happens, your stone will take possesion of that point and
the Amiga stone will be knocked off onto the center bar. Any stone on
the bar has to enter the board in the opposing players home area. You
must get back on the board, on a point that is not blocked, before any
further moves are allowed. If you cannot make a move just click once on
the dice to give up your turn and resume play.
When all of your stones are home, you can start removing them from the
board. This is called bearing off. If, for example, you rolled a 6 and
a 2, you could remove one stone from position 6 and another one from
position 2. If you rolled a 6 but didn't have any stones on position 6
to remove then you are allowed to take one stone off the next highest
position. It is also legal to move stones within your home area rather
than bearing them off. It might be an advantage to do this if the Amiga
still has some stones in your home area and is trying to knock you off
onto the bar.
The only other rule is that both players must use as much of what they
rolled as possible. If you rolled a 5 and a 3 and it is possible to use
both the 5 and the 3 then you must make both moves. If you can only use
the 5 or the 3 but not both then you are required to use the higher
amount(5). The Amiga plays by these rules and now, in version 2.3, you
are forced to play by these rules also.
GAME PLAY:
To move a stone just click once on the stone and then once on the spot
where you want it to go. If you did it right then the stone should move
to the new location or else a message will appear to help you out.
If you roll doubles ( i.e. two 3's ) then instead of getting two moves
of 3 you get four moves of 3. Anytime during a move you can get an
update to how many moves you have left by clicking anywhere outside the
main board area. In the message area will be displayed the dice values
that have not yet been used.
You can also make multiple moves. If, for example, you roll a 3 and
a 4 then you are allowed to make one move of 7 as long as both points
between your present location and your destination are not blocked.
If you are unable to make a move then just click once on the dice to
continue with the game. If you select a stone by mistake then just click
on that same stone to start your move over again.
Once all your stones are in your home area, you can remove them from
the board by double clicking on them.
A gammon will be declared if one player is able to get all his stones
off before the other player has removed one. This is equivalent to
winning 2 games. A backgammon occurs when one player gammons the other
player plus he traps at least one of the opposing players stones in his
home area. This is worth 3 wins.
MENUS:
By selecting Colors from the main menu you will be able to adjust
both the board colors as well as the speed of the game.
If you select SAVE in the color adjustment window then your game
preferences will be saved to a 266 byte file called gammon.prefs in the
current directory. The program keeps track of the AMIGA's winning
percentage in this file as well as statistics on the dice. If you want
this feature then remember to click on SAVE before the end of the first
game. Your old version 2.1 gammon.prefs file will automatically be
upgraded to this new version while maintaining your color selections and
your win - loss record.
There is also a version in which all 15 stones start off on the
center bar and you have to get all the stones back on the board before
you can start to move them. Just select BAR in the menus and then
select New Game to play this version.
Selecting Stats in the menus will display a table of what you have
rolled so far as well as what your average roll has been. A long term
average roll of 8.167 is ideal. Clicking on the left side of the stats
window will show the statistics for the present series of games and if
you click on the right side the long term statistics in the gammon.prefs
file will be displayed.
TOOL TYPES:
MAINFONT=topaz
FONTSIZE=11
These 2 tool types allow you to use any reasonably sized font for your
menus, message display and window title in VGA mode. If the program is
unable to find this font or if your size choice is too large then it will
use topaz 8 as the default.
REVERSE
I prefer setting up the board so that you move your stones from the
upper left part of the screen to the lower left in a clockwise direction.
If you would prefer that the board was set up so that your stones move
from the upper right part of the board to the lower right in a counter-
clockwise direction then use this tool type.
NTSC
This tool will force the program to use a 640x200 NTSC screen or dblNTSC
screen if available.
MAILWARE:
You will be hard pressed to find a significantly better playing
computer backgammon game on any platform at any price. Questions,
comments and bug reports are most welcome. Users who register will
receive a keyfile that unlocks some additional features.
Long live the AMIGA!
MAIL:
Kevin Glynn
#7, 4604 - 13th Street NE
Calgary, AB, Canada
T2E 6P1
e-mail:
glynnk@cadvision.com