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djmips

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    Atari 2600 Homebrew - ElectroBall (Complete!)

    in Atari 2600 Programming

    Posted

    First off, tremendous game. Very fun and it's such a treat to even have an AI! 

    My small thoughts.
    Even though the Press Fire is a nice UX improvement, I don't like how it breaks the immersion, I know they are just sprites but I believe you should treat your on screen players with more care and not interchange them with letters but respect their 'life' as the player's avatar. In a similar vein when the game is complete I think it would be good to take control of the players and move them to the celebration position instead of the jump cut. I know, some tiny game feel suggestions... But maybe you can ponder on them. 

     

    Thanks for taking the time to learn all you have and climbed that hill to ascent a very tough little system to master! Great work! 
     

    Amiga Boing demo for Vectrex

    in Vectrex

    Posted · Edited by djmips
    spelling grammar

    2 hours ago, bhall408 said:

    For extra credit, you could do a magenta, red and white version...

     

    Here it is in Argon using Arcade Jason color mapping...

     

    (it maps bands of luminance to colors based on a spec he set out)

     

    You just need to tweak the luminance/brightness to get the 3 colors!

     

     

    Screenshot_20221213-193604.png

     

    I had considered it but and a bunch of other features but in the end I just wanted to keep it as simple as possible so as not to delay release. Also, I thought that most people don't have modified Vectrex that were hooked to color displays - I kind of forgot about emulator support.

     

    I might do a new version and maybe put an option for colors.

     

    • Like 1

    Mega Man 2600 demo game (binary)

    in Homebrew Discussion

    Posted

    On 8/15/2021 at 4:16 PM, sn8k said:

    So get crackin.....

     

    Some great ideas you've posted. I really would get crackin... but my day job is making games and it's pretty all consuming. 

    I have arranged for a major break at Christmas so perhaps you should remind me then. :) 

     

     

    On 8/15/2021 at 4:16 PM, sn8k said:

    3 more levels

    3 more enemies

    Elecman pallet swapped 3 more times:

     

    In Atari Land

     

    Wily somehow realized ElecMan was the best all around robot and was easily the most upgradeable, so he built 3 more models.....each with different weapons and capabilities. All to destroy the blue bomber once and for all.

     

    In reality..... Space is limited. So he got copy and pasted 4 times lol

     

    I think this would still kick major ass. I still had fun with the 2600 version of Kung Fu master. Sure NES version was way better..... but I still like 1 button gaming.

     

    • Like 2

    Mega Man 2600 demo game (binary)

    in Homebrew Discussion

    Posted

    I think Ninjish Guy in a Lo Res World captures a lot of the ethos that I was thinking of when I made this so many years ago. Sometime in the early 2000s someone made an article and a series of accompanying Flash games that boiled down a lot of game mechanics to just the most minimalist lo res graphics and often needing only a single button. That resonated with me. I'm glad to see a lot of these minimalist games did get completed on the 2600. A lot more is still possible and it would be cool to see a 4 level version of Mega Man 2600.

    Serial Communication

    in Atari 8-Bit Computers

    Posted

    How do you bitbang on a Pokey. Can you use it as a 1 bit I/O to control a transistor for example. Turn on. Turn off. I understand the logic level is 4V on and 0 V off which falls into TTL logic spec. Just wondering how to take control of ensuring it goes true and false without worrying about it inserting start bits and stop bits.

    Dig-Dug Arcade. Need Hacker For Help.

    in Atari 2600 Hacks

    Posted · Edited by djmips

    15 hours ago, Atariboy2600 said:

    Wow been too longXD

    IKR? I read my posts and was - I used to know 2600 stuff? LOL 
    This was 15 years ago... another short 5 years and it will have been 20 years!
    which is about how long from 2006 I originally had a 2600...

    6502 Killer hacks

    in Atari 2600 Programming

    Posted

    16 hours ago, c3po said:

    In (timely) response to the initial post... 

    
lda work	; or ldy work
clc		;    iny
adc #1		;    tya
eor work
and #$0f
eor work
sta work

     

    and if you want any subset of contiguous bits you can do like that: 

    
lda work
clc
adc #4		; value of the lsb of the increment group
eor work
and #%00011100	; 3 bits (2...4)
eor work
sta work

    this will cycle bits 2...4

    I'm pretty sure this was later surfaced in this very long thread but appreciate your contribution!

    CPUWIZ in hospital

    in Atari General

    Posted

    On 10/1/2020 at 9:52 PM, CPUWIZ said:

    Hello old friend, every time, I see your handle, Sony Developer Conference comes to mind, when you figured out who I was.  IIRC, we closed the bar, long after Ian was already gone. :D  You were there with Ian Sabine and I was there with Ken Jordan (still work with him, 16 years now), do you remember that night?  We ended up at the same table, because me and Ken worked with Ian in the past and 8bit stuff came up.

     

    EDIT: And I don't plan on "peacing out", I am a stubborn German, with a high threshold for pain. 

    That was an amazing night. I miss those...

    CPUWIZ in hospital

    in Atari General

    Posted

    Hey CPUWiz. Before you peace out I want to tell you and everyone how much I appreciated your dedicated help when I was on a tight deadline to get my Mega Man demo out all those years ago.  You really came through with coding advice and boards for me and a lot of good stories. Thanks so much. 

    Making a Vectrex cartridge.

    in Vectrex

    Posted

    On 5/31/2020 at 1:13 PM, gorf68 said:

     

    What I'm looking for are any links to sites that give you templates that match the original Vectrex games cartridge box?

     

     

     

    There was a post today on fb by Graham Toal with a pattern to cut a cartridge box with a vinyl cutter. 

    "Input file for the "Make the cut" vinyl cutter program, to create a box very similar in size to the standard Vectrex game box containing a cartridge, manual and space-filling insert. Details on exactly how to make a box will be posted as a separate article. Cut files in other formats may follow. Created for 17x11 in paper or larger (to the limit of what a wide format inkjet printer can handle)."

    https://www.facebook.com/groups/vectrex/permalink/1310735169136857/

     

    Atari 2600 Soccer

    in Homebrew Discussion

    Posted

    9 hours ago, easmith said:

    This is like  table top  foosball. You could add the sliding bars 

     

     

     

    I feel like it would just add clutter. I get where you were going with that. But if you think about it the bars are a necessity in real life but not needed for a a video game.
     

    • Like 1

    Making a Vectrex cartridge.

    in Vectrex

    Posted · Edited by djmips

    There's this design as well.

     

     

    https://hackaday.io/project/28295-vectrex-cartridge

     

    There's an OSHPark link for the simple version of the board.  Note this also has solder mask around the fingers which has been noted to cause problems in some cases but it should probably be fine if he's used them successfully. 

     

    https://oshpark.com/shared_projects/wJFL6D41

     

    For his latest design with all the Kicad etc it's linked from Hackaday but I'll also add it here.

     

    https://github.com/FrankBuss/bloxorz

     

    Robot Zed PLAYABLE DEMO

    in batari Basic

    Posted · Edited by djmips

    On 7/8/2019 at 1:40 AM, Sprybug said:

    Thanks guys.  Just giving an update!  I figured out how to do Nibbles!  So, this is going to allow me to add some better play control by adding momentum moving left and right, so the controls aren't so touchy!  I need to start implementing nibbles because I am out of RAM, so I am going to split up what I can.  I have several variables that never go over 16, so I'm wasting valuable bits!  Not sure how much I'm going to be able to work on it the next month and a half because I got a big announcement.  I got a great new animation job at a studio in QUEBEC, CANADA.  I AM MOVING.  So I've been very busy working on my move, learning French, and working with them remotely in the meantime.  I plan on moving there next month.  I am so excited....and nervous!

    That's nice to hear you are coming up to Canada! I almost took a job in Montreal myself - great city. 

    I was hoping to bump into you at PRGE but maybe next year!

    Good luck at the new job. Your latest game looks super.

    - David

    • Like 2

    Robot Zed PLAYABLE DEMO

    in batari Basic

    Posted · Edited by djmips

    Fantastic! Of course I like button for jump and up for shoot as well. ;-) But some people are going to want to swap to "up for jump and button for shoot" (if they don't have a Genesis controller). So consider putting in that as an option - menu or difficulty switch perhaps. I'm always abusing the difficulty switches; it is confusing but allows configuration without adding a menu and it's sticky.

    • Like 1
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