Subject: [stella] Yahtzee From: "Russell Babylon" <babylon@xxxxxxxxxxxxxxx> Date: Thu, 11 Jan 2001 21:05:20 -0500 |
Hello Everyone,
I want to apologize to
everyone for not responding to the questions concerning the Yahtzee game I have
written for the 2600. I was between ISPs for a couple of weeks and was
incommunicado :>(.
First let me respond to Russ
Perry. Russ, when I put (no not Russ Perry) at the end of
my message about my Yahtzee game it was a complement. Many times
I have seen references to "lets see what Russ says" in the Stella list and,
while I am "A" Russ, I am not "THE" Russ.
Second, to Manuel,
regarding the flicker showing up in Z26, I don't
know what you mean by flicker in the status lines? Let me explain what is
happening in the game. The first three dice are being displayed by Player
Zero. By using the trick of hitting the reset position register of the
TIA, I use Player Zero to display all three dice with independent colors and
independent graphics in the same horizontal positions. I then use
Player Zero, again using the reset position trick, to display the remaining
two dice. All five dice are displayed using just one player
graphic. The dice graphics are displayed on every screen
but the remaining portions of the screen are displayed on alternating
frames. I had to do this to get the score options and the scores to
display on the screen. IMHO there was no other way to get all of this
information to display using the 2600 hardware. I do not know if
other games have used this split flickering screen
protocol. When I load the game into a real 2600
using a Supercharger the display is smooth and stable. FYI, I have
used the same font that is being used by the Super Charger to display REWIND
TAPE and PRESS PLAY
Third, to Erik Mooney and Ruffin
Bailey,
concerning the "official" Yahtzee rules, I
went out and purchased a Milton Bradley Yahtzee game and studied the
official rules. I then tried to implement them as closely as
possible. I tried to balance what was theoretically possible against
what was reasonably possible. Hence if you score a second Yahtzee you can
only use it to get an additional 100 points. I have scored 380 points as
my hi score when playing the game my self.
I find it interesting that no one has asked how I
generated the random numbers used to get the dice values used in the game.
The random number generation turned out to be a problem and consumes about
20% of the time available in each vertical blank period.
Thanks to everyone for their comments concerning
Yahtzee for the 2600, I will certainly try to respond to any questions in a more
expeditious manner in the future, that is of course once I finish installing the
Linux kernal for 2.4.0
Russ
Babylon
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