Show HN: My hobby OS that runs Minecraft

(astral-os.org)

154 points | by avaliosdev 3 days ago ago

15 comments

  • rf15 10 hours ago ago

    > due to the mlibc code using the char value from the format string, the values above 127 passed by OpenJDK would be handled as negative integers

    It's 2025 and I still don't get why Java needed signed chars and bytes. Why completely disregard the convenience of using them for array access/etc..

    • toast0 9 hours ago ago

      Java creators tried to avoid giving developers any sharp edges. Interactions between signed and unsigned integers can be surprising, so they disallowed unsigned integers.

      Of course, not having access to unsigned quantities makes interaction with other programs difficult :(

      • astrange 8 hours ago ago

        The one that annoys me is that people think implicit type conversions are dangerous for some reason, so they also disallowed `char a = 10; short b = a;` without writing a cast even though this makes no sense.

        • resonious 4 hours ago ago

          It feels like "sharp edges" often means "I once had a horrible bug due to accidentally misusing this". But if you cut features based on that definition, you'd soon have an empty programming language.

  • ZebusJesus 2 days ago ago

    Well done and thanks for sharing, it's great to see people making a hobby OS and it's awesome that it plays Minecraft! How long have you been working on Astral?

  • phendrenad2 3 days ago ago

    Love the Motif-style window borders!

  • coolcoder613 10 hours ago ago

    This is very impressive! When I saw the title, I thought it would be classicube, but no, it's actual minecraft.

  • jakemanger 3 days ago ago

    The “Astral from scratch guide“ idea really caught my eye.

    Gotta say that would be a pretty cool evolution of DIY electronics kits to OS kits

  • zamadatix 11 hours ago ago

    I love hobby OS projects, and it's good to see how many there continue to be posted here. I can never get enough! It looks like this one has some networking support as well.

  • burnt_toast 10 hours ago ago

    Congrats! Seeing an old version of MC makes me nostalgic.

  • charcircuit 10 hours ago ago

    I would be interested in a benchmark.

  • WhyOhWhyQ 12 hours ago ago

    Very inspiring!

  • kgwxd 11 hours ago ago

    Better than Windows 11 already. I can't run Bedrock or Java without first signing into the Microsoft Store on "my" PC.

    • zamadatix 11 hours ago ago

      Good news, you too can run Minecraft Alpha 1.2.0 single player offline without signing in. That's not what made this impressive :).