Parsec - I'm making a game

Using, learning, programming and modding the Gigatron and anything related.
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blaknite
Posts: 22
Joined: 18 Jun 2020, 01:10
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Parsec - I'm making a game

Post by blaknite » 26 Jun 2020, 04:40

Hey Everyone!

I ordered a Gigatron kit a couple of weeks back and have been waiting impatiently for it to make its way here to me in Australia. Walter let me know it could take up to 8 weeks! No worry though, I figured I could get a head start on learning how to program it and set up a bit of a development environment.

Given I'm a Ruby developer, I've taken a bunch of inspiration from the existing vASM assembler written in Python and gone about learning the architecture and instruction set. It's been super fun!

All this fiddling about has started to evolve into a game which I've called "Parsec". I plan for it to be a side-scroll space shoot-em-up. Attached is my progress so far. It's currently just a tech demo of the ship moving and firing, but I'm pretty happy with how it's coming together.

I can't wait to see this run on my real-life Gigatron when its built :D

parsec.gt1
Give it a go!
(3.17 KiB) Downloaded 47 times
loading_screen.png
Sneaky loading of bytes directly into screen memory
loading_screen.png (34.65 KiB) Viewed 1135 times
lasers.png
Ship firing its lasers
lasers.png (27.65 KiB) Viewed 1135 times

at67
Posts: 190
Joined: 14 May 2018, 08:29

Re: Parsec - I'm making a game

Post by at67 » 26 Jun 2020, 06:49

Looks great and works great on real hardware, good stuff!

walter
Site Admin
Posts: 84
Joined: 13 May 2018, 08:00

Re: Parsec - I'm making a game

Post by walter » 26 Jun 2020, 06:54

New games! Cool!! You might want to get your code in github in the contrib section.

blaknite
Posts: 22
Joined: 18 Jun 2020, 01:10
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Re: Parsec - I'm making a game

Post by blaknite » 26 Jun 2020, 07:29

at67 wrote:
26 Jun 2020, 06:49
Looks great and works great on real hardware, good stuff!
That's a massive win! Thanks for giving it a go :)
walter wrote:
26 Jun 2020, 06:54
New games! Cool!! You might want to get your code in github in the contrib section.
Thanks, I'll definitely do that soon. I've been finding that section a fantastic resource while I've been learning. How do I go about doing getting it in there?

walter
Site Admin
Posts: 84
Joined: 13 May 2018, 08:00

Re: Parsec - I'm making a game

Post by walter » 26 Jun 2020, 08:27

I think at67 will send you a message.

at67
Posts: 190
Joined: 14 May 2018, 08:29

Re: Parsec - I'm making a game

Post by at67 » 26 Jun 2020, 08:34

blaknite wrote:
26 Jun 2020, 07:29
Thanks, I'll definitely do that soon. I've been finding that section a fantastic resource while I've been learning. How do I go about doing getting it in there?
You'll need to have git installed and a github account, (you can manage everything from the git command line and through github's browser interface).

Clone the entire repo at https://github.com/kervinck/gigatron-rom into a suitable directory.

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git clone https://github.com/kervinck/gigatron-rom
Make a directory under gigatron-rom\Contrib, e.g.

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md/mkdir gigatron-rom\Contrib\blaknite
Copy all your code and resources into this new directory, (use whatever directory structure that makes sense for you and your projects that you like). Don't meddle with anyone else's Contrib areas or the main repo itself, but if you want to experiment with other people's stuff, go ahead and do it on a different local copy of the main repo, (you can make as many clones of the main repo as you like), don't experiment on the repo that you will be making pull requests from.

Check your local repo is not modifying any files outside of your Contrib area:

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git status
Update your local repo with your changes:

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git add .
git commit -a
Do a push of your local repo, (the gigatron-rom you just cloned and your new Contrib\blaknite changes), to your remote repo in github.

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git push
Once you are ready to make the pull request, do the following:

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- login to github in your favourite browser.

- go to your gigatron-rom repo and click on the Pull Requests tab across the top.

- click on the green New Pull Request button, (this should give you a list of changes that you have made to the repo).

- make sure you have only made changes to the Contrib\blaknite area.

- add a title/version/description and click Create Pull Request
Your code will be checked for merge conflicts, (which shouldn't exist as you're only making changes to your own area under Contrib), it will then be merged into the main repo, (Pull Requests are checked daily).

In the context of this message:
- main repo means https://github.com/kervinck/gigatron-rom
- remote repo means your github repo
- local repo means your local physical copy of the repo

More information can be found here.
https://www.atlassian.com/git/tutorials ... ll-request

blaknite
Posts: 22
Joined: 18 Jun 2020, 01:10
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Re: Parsec - I'm making a game

Post by blaknite » 26 Jun 2020, 11:41

Easy. Thank you!

I've got an existing git repo for what I've been working on. I'll also fork kervink/gigatron-rom and commit some of my stuff to it periodically and submit some PRs. As I get more familiar with the platform I'd love to contribute to the rom. In particular, I've found the sys functions super handy.

Until then, feel free to have a look at what I've got so far at https://github.com/blaknite/gigatron. If you spy any patterns I've been using that have more optimal approaches, I'd love the feedback :)

qwertyface
Posts: 18
Joined: 16 Jul 2019, 09:19

Re: Parsec - I'm making a game

Post by qwertyface » 26 Jun 2020, 12:09

blaknite wrote:
26 Jun 2020, 04:40
Given I'm a Ruby developer, I've taken a bunch of inspiration from the existing vASM assembler written in Python and gone about learning the architecture and instruction set. It's been super fun!
I'm a Python guy, but I must say that I think your vASM as a Ruby embedded DSL looks really nice - very little visual noise. I like the way you have a macro function which consumes a block - it signals the intent much more clearly than having a function for each macro.

blaknite
Posts: 22
Joined: 18 Jun 2020, 01:10
Contact:

Re: Parsec - I'm making a game

Post by blaknite » 26 Jun 2020, 12:45

qwertyface wrote:
26 Jun 2020, 12:09
I'm a Python guy, but I must say that I think your vASM as a Ruby embedded DSL looks really nice - very little visual noise. I like the way you have a macro function which consumes a block - it signals the intent much more clearly than having a function for each macro.
Thanks! It's one of the things I like most about Ruby. It lends itself really well to DSLs. In this case it almost looks just like a *.asm file :D

delpozzo
Posts: 21
Joined: 03 Jun 2020, 18:47

Re: Parsec - I'm making a game

Post by delpozzo » 26 Jun 2020, 16:57

Great work blaknite! It worked perfectly on my Gigatron (currently running ROMv4), very smooth!

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