Jump to content

Photo

Happy New Year! - Scramble for the 7800


323 replies to this topic

#51 AtariNerd OFFLINE  

AtariNerd

    Stargunner

  • 1,046 posts
  • For Illustrative Purposes Only.

Posted Wed Jan 4, 2012 6:15 AM

Wanted. :)

#52 SpiceWare OFFLINE  

SpiceWare

    Draconian

  • 12,430 posts
  • Medieval Mayhem
  • Location:Planet Houston

Posted Wed Jan 4, 2012 1:37 PM

:thumbsup:

#53 johnnywc OFFLINE  

johnnywc

    Stargunner

  • 1,941 posts

Posted Wed Jan 4, 2012 1:51 PM

Looks great Bob - one of my all-time favorites! :)

#54 purenergy OFFLINE  

purenergy

    Dragonstomper

  • 650 posts
  • Location:Sherman, Texas

Posted Wed Jan 4, 2012 4:19 PM

Enjoyed this back in the day, can't wait to see it done.
Great work Bob!
:)

#55 PacManPlus OFFLINE  

PacManPlus

    River Patroller

  • Topic Starter
  • 4,752 posts
  • Atari 7800 & NES Developer
  • Location:Florida

Posted Wed Jan 4, 2012 9:58 PM

Thanks for all of the kind words, guys.

Guess what, I had to implement flicker for this one. To use 320 character mode, an 8 byte-wide ship, six 1-byte shots, and 2 six-byte enemies takes approx 421 Maria Cycles. There was no way I could put two other enemies (there are 4 max on the screen at one time in this game). So, I was left no choice. The flicker has very little intelligence, you can see it in the UFO and meteor stages.

I am hitting some CPU cycle maxes already in this game. Took me most of the day to get some acceptable frame rates out of this. Still, if everything is on the screen at once, you can see a little slowdown.
This is what I have left:

- End Of Level
- Rocket Launching (this one's going to be tough)
- Sound

Here's the latest WIP

Enjoy,
Bob

P.S. - To the question about using the Marquee 'Scramble' for the splash screen, I would like to, but it all depends on how much space I have left.

Thanks!

Attached Files


Edited by PacManPlus, Wed Jan 4, 2012 9:59 PM.


#56 Rybags OFFLINE  

Rybags

    Quadrunner

  • 15,793 posts
  • Location:Australia

Posted Wed Jan 4, 2012 10:22 PM

I gotta say - the look, feel, mechanics are just about arcade exact.

Are you considering doing Pokey sounds, or a version for the XM expansion.

I might be able to help with a few sound effects - the Pokey triangle/saw wave feature could come in handy.

#57 Rybags OFFLINE  

Rybags

    Quadrunner

  • 15,793 posts
  • Location:Australia

Posted Thu Jan 5, 2012 6:08 AM

Attached File  scramble1.mp3   70.65KB   170 downloads

Got it almost exact in a couple of minutes.

That uses 16 KHz mode with a frequency sweep with Audf values going 255 to 60.
The game seems to do 6 then has a kind of pause.

The arcade uses the YM chip like the ST, so Pokey and maybe even TIA could fairly closely match most of the sounds.

#58 PacManPlus OFFLINE  

PacManPlus

    River Patroller

  • Topic Starter
  • 4,752 posts
  • Atari 7800 & NES Developer
  • Location:Florida

Posted Thu Jan 5, 2012 8:25 AM

Funny you should start with that one, as that is the one I started with as well. The sounds in Scramble seemed simple, so I figured the TIA could handle them.
Here's my version of the background sound. I used Voice $0A, with the sweep moving in threes from $1F to $02 (the $02 I had to fudge because I didn't want $01 - it was too high). I also added the slight delay.

Funny thing though, in my version of ProSystem that voice is muted. On the real thing it sounds good though. That sound is in the attachment below.

I think the UFO sound is going to be the most difficult, with the warbling and all...

Attached Files


Edited by PacManPlus, Thu Jan 5, 2012 8:47 AM.


#59 Rybags OFFLINE  

Rybags

    Quadrunner

  • 15,793 posts
  • Location:Australia

Posted Thu Jan 5, 2012 9:32 AM

I wonder if a memory watch in Mame could help. No idea if hardware registers can be monitored.

I did the start music in Moon Cresta by just measuring the notes and selecting best matching frequency.

Maybe for that quick sweeping sound, a similar technique could be used. Just pick landmark parts of some captured audio and work out the frequencies and duration of the sweeps.

#60 atarinut76 OFFLINE  

atarinut76

    Dragonstomper

  • 640 posts
  • Location:Langhorne, Pa

Posted Thu Jan 5, 2012 1:53 PM

add me to the list too!!!! ;-) :thumbsup:

thanks
Matt

#61 ntavio OFFLINE  

ntavio

    Stargunner

  • 1,471 posts
  • I play a super stuntman on TV.
  • Location:Latitude: 2547′16″N, Longitude: 8013′27″W

Posted Thu Jan 5, 2012 4:30 PM

Please add me also! Thanks Bob!

#62 fandenivoldsk OFFLINE  

fandenivoldsk

    Chopper Commander

  • 184 posts

Posted Thu Jan 5, 2012 5:04 PM

Please add me to the preorder list! Looks sweet!!

#63 masematte OFFLINE  

masematte

    Dragonstomper

  • 650 posts
  • Location:Cologne Germany

Posted Thu Jan 5, 2012 5:04 PM

Please add me to the list too. Amazing work und bob

#64 moonpatrol OFFLINE  

moonpatrol

    Star Raider

  • 50 posts

Posted Thu Jan 5, 2012 7:45 PM

Please add me to the list! Thanks

#65 Mayhem OFFLINE  

Mayhem

    Commodore Chaos Knight

  • 5,216 posts
  • Cartridge master
  • Location:London, England

Posted Thu Jan 5, 2012 9:07 PM

Obviously I should be on any pre-order list too ;)

#66 remowilliams OFFLINE  

remowilliams

    Quadrunner

  • 10,565 posts
  • Location:Detonation Boulevard

Posted Thu Jan 5, 2012 10:02 PM

Wow! How does he keep on doing it?? Cart Want! :D

#67 Mitch OFFLINE  

Mitch

    Quadrunner

  • 6,558 posts
  • 7800 Guy
  • Location:Southern California, USA

Posted Fri Jan 6, 2012 12:16 AM

Since this seems to have turned into a combined beta and cart preorder thread...
I want a cart too! :)

Mitch

#68 iesposta OFFLINE  

iesposta

    River Patroller

  • 3,818 posts
  • Retro-gaming w/my VCS
  • Location:Pennsylvania

Posted Fri Jan 6, 2012 1:03 AM

I will buy a cartridge too!
This is one of the two arcade games that I own the boards, and Scramble (cocktail table) never worked.
Easy guess as to what the other arcade game I own is.
<- hint, hint...

#69 jeffgamer OFFLINE  

jeffgamer

    Chopper Commander

  • 216 posts

Posted Fri Jan 6, 2012 1:22 AM

Yeah, I'm always up for one of your carts. Perpetual pre-orders! :-)

#70 diggs130 OFFLINE  

diggs130

    Stargunner

  • 1,337 posts
  • Location:minnesota

Posted Fri Jan 6, 2012 7:44 AM

If there is a list,please add me to it!

#71 cmart604 ONLINE  

cmart604

    Intellivision Hoarder

  • 12,098 posts
  • Running out of things to buy.
  • Location:Vancouver

Posted Fri Jan 6, 2012 9:00 AM

One for me too please!

#72 JonnyBritish OFFLINE  

JonnyBritish

    Moonsweeper

  • 427 posts
  • Location:Geneva, IL

Posted Fri Jan 6, 2012 10:51 AM

Add me to the list as well Bob...JonnyBritish

#73 Underball OFFLINE  

Underball

    Stargunner

  • 1,507 posts

Posted Fri Jan 6, 2012 11:02 AM

What are the differences between Scramble and Super Cobra, and can there be a Super Cobra version too?

Just plain astounding, Bob as always.

#74 NE146 OFFLINE  

NE146

    Dumbass Atari Fan

  • 15,666 posts
  • Location:Seattle, WA

Posted Fri Jan 6, 2012 12:15 PM

What are the differences between Scramble and Super Cobra, and can there be a Super Cobra version too?

Just plain astounding, Bob as always.


Super Cobra is the sequel to Scramble and is a lot more difficult. There's a lot more stages, and there's more enemies who are a lot more aggressive.

I always thought if there's a Super Cobra for the 2600 (whatever your opinion of it may be, there outta be a Scramble for the 2600 as well. But I'll take a 7800 version anytime as well. :)

#75 edweird13 OFFLINE  

edweird13

    Stargunner

  • 1,016 posts
  • Location:SW Missouri

Posted Fri Jan 6, 2012 1:21 PM

I defiantly want one too.




0 user(s) are browsing this forum

0 members, 0 guests, 0 anonymous users