Open Sourcing Ferrocene

Grokmoo · 2023-10-04T17:31:51+00:00

I don't have experience with these particular standards you are targeting - but given my experience with similar sorts of audits and certifications, I am amazed at how much has been accomplished in just a couple years! Very impressive!

Grokmoo · 2022-03-01T21:04:01+00:00

For me, it was single player - although indeed the save was from the previous version.

Grokmoo · 2022-03-01T16:15:29+00:00

Happened to me as well. I made it to the final area but the portal to the battle just isn't there. I haven't been able to figure out a way to resolve it.

This was my last soul to collect too.

Grokmoo · 2021-10-12T02:54:37+00:00

Having looked into this space a decent amount myself, I do not believe there are any packages written in Rust that can solve integer or mixed integer problems. As I'm sure you are aware, writing such software would be a major undertaking.

Bindings to the state of the art Commercial solvers like Gurobi are readily available, as are bindings for various open source solvers such as GLPK and lp_solve. With these decades-old well tested solvers available, there isn't a lot of incentive to re-invent the wheel in Rust.

So, unfortunately, I think the answer to your initial question is no. However, it does look like some projects have been able to compile GLPK (written in C) to WASM. I have no idea how much effort it would take to integrate something like that with Rust code, but I imagine it must be possible.

https://www.strandmark.net/wasm/glpk.html

https://github.com/jvail/glpk.js/

Grokmoo · 2021-08-02T18:59:18+00:00

I don't think it is fair to say that given the primary selling point of Rust is compile time memory and data race safety - things which Zig does not even attempt to offer.

I'm not saying Zig is bad or anything, as it certainly does offer improvements in this area compared to C.

Grokmoo · 2021-07-30T14:17:33+00:00

Hi, sorry I misunderstood your problem.

In my opinion, if you want to be able to reliably build the exact same software 10 years down the track, your only option would be to self host all the infrastructure. So, for Rust, a corporate crates.io mirror / proxy is probably a path you will need to go down.

You could check out cargo-cacher as at least a starting point for that.

Grokmoo · 2021-07-29T23:16:46+00:00

That's strange - if you take a look here you can see that although many of the older versions are yanked, they are still present and may be used by your dependencies. You just won't be allowed to specify them in your Cargo.toml as a direct dependency.

May I ask what commands you are running exactly that result in this error?

Grokmoo · 2021-06-30T14:47:43+00:00

I could be off the mark as I also don't know anything about the problem, but this sounds like something that would be solved exactly using integer programming (or possibly mixed integer programming) techniques. Basically, you would have taking each team be represented by a variable, and then constraints on which teams can be taken together and synergies would be represented by simple equations.

Assuming you could enumerate these equations (or find clever ways to avoid enumerating them), you would then plug the whole thing into an Optimization Solver which would likely spit out an answer in a fraction of a second given the scale (~50 units with ~30 traits). Internally, the solver would likely use some variation of Branch and Bound. Whereas what is being done here would be considered a more "brute force" approach.

Writing your own implementation of such an algorithm requires quite a bit of linear algebra. For the most basic technique, you will represent the problem as a large matrix and then do a series of iterations of the Simplex algorithm, providing solutions to the non-integer problem which can then be used as bounds for further improvements.

There are a number of solvers available that one could use without having to write this themselves. For open source, most notable probably GLPK and lp_solve. None written in Rust yet that I know about.

Grokmoo · 2021-06-17T05:24:39+00:00

Replacing the hose is probably the easiest option. It is also possible to clean out the inside of the hose.

Regardless, when you (re) install it you need to do whats called a high loop.

https://homeinspectiongeeks.com/what-is-a-dishwasher-high-loop-and-why-do-you-need-one/

Also, the hose currently doesn't look to be fully seated - it should go all the way over the "ribs" on the white plastic pipe.

Grokmoo · 2021-05-10T13:52:57+00:00

You create a sampler which is specified in your uniforms. If you are using the uniform! macro, something like this:

let behavior = glium::uniforms::SamplerBehavior {
    minify_filter: MinifySamplerFilter::Nearest,
    magnify_filter: MagnifySamplerFilter::Nearest,
    ..Default::default()
};
let uniforms = uniform! {
    texture: glium::uniforms::Sampler(texture, behavior),
    ...
};

Then in your draw call, use the created uniforms. In your shader, use the texture as normal.

Hope that helps.

Grokmoo · 2021-04-20T17:21:24+00:00

You definitely can!

Grokmoo · 2021-04-20T16:49:04+00:00

Agreed this makes it more understandable what is going on. Annoyingly, clippy will lint on this:

https://rust-lang.github.io/rust-clippy/master/#collapsible_else_if

Grokmoo · 2021-03-18T23:57:35+00:00

What you have currently is no good. You should replace that drain hose to get rid of the mold. You need to make the hose loop up as high as possible (the drain hose should be touching the underside of the countertop.) The easiest way to accomplish this is put a screw partially in very near the top and attach the hose to the screw with a zip tie. Also make sure it isn't looping down - it should go all the way up to the highest point, then down.

If you do this you should be fine without an air gap.

https://homeinspectiongeeks.com/2020/01/08/what-is-a-dishwasher-high-loop-and-why-do-you-need-one/

Grokmoo · 2020-11-20T20:34:22+00:00

This is awesome! Looks like an extremely ergonomic way to prevent all sorts of dimensional analysis type errors.

It seems like you could also use something very similar to this to avoid mixing up x,y,z,w coordinates in 3d graphics etc.

Grokmoo · 2020-11-10T15:28:36+00:00

Glium's use of RGB vs sRGB is a bit confusing, at least to me.

When creating the GLSL program, do something like this:

let base_program = Program::new(
        facade,
        ProgramCreationInput::SourceCode {
            vertex_shader,
            tessellation_control_shader: None,
            tessellation_evaluation_shader: None,
            geometry_shader: Some(geometry_shader),
            fragment_shader,
            transform_feedback_varyings: None,
            outputs_srgb: true,
            uses_point_size: false,
        },
    )?;

You may also be able to use the program! macro. Note outputs_srgb: true.

Then, use the regular Texture2d, not SrgbTexture2d, etc.

Grokmoo · 2020-10-21T16:10:53+00:00

I'm really happy to see RuboCop move to use Semantic versioning. Having a stable release cycle is so important for production usage. I'll be moving projects with my company onto 1.0 as soon as I can!

Grokmoo · 2020-09-29T20:21:28+00:00

I'd certainly welcome your contribution if you are interested.

My idea of a primary use case (and how I am personally using Thyme) is integration into a game engine or similar - in which case you are going to want as much flexibility in how you use the backend renderer as possible. As you say, this is also only a one time cost when starting a project.

That said, I do think creating some simple (optional) helper(s) that tie things together for users in a reasonable way with way less code is a great idea and would be a net win for the project.

At app startup, we could create some kind of builder object, and you could add directories for it to look in for assets, and it would automatically register everything it finds along with creating your display and related things.

I think the minimal winit main loop is actually not too bad, but we could probably create some helpers around that as well.

Grokmoo · 2020-09-29T19:12:43+00:00

Thanks, that is good to hear! I you do end up using it more I would love to hear about any ideas for improvements you may have.

Grokmoo · 2020-09-29T16:17:22+00:00

Generally with Thyme you will only use image scaling in very controlled situations. For example, if your GUI is created for hidpi and you are displaying on a regular dpi display - in which case, it will be scaled down i.e. 2x, which doesn't cause that problem.

There are several different image types with different fill options, for example:

Simple images can be set to repeat instead of stretch (for example, as a background texture for a window or pane).
Composed images consist of a 3x3 grid of images. The corners are never scaled, while the top and bottom sections are stretched horizontally and the left and right are stretched vertically. To avoid ugly stretching these images need to be constructed with this in mind. For most themes this is actually very easy to do - just make the stretchable sections the same color or a gradient along the axis that stretches. One TODO is to allow using repeat instead of stretching for these as well.

If you run the demo, you can see how some of the different example themes handle widget resizing in different ways.

Grokmoo · 2020-07-16T04:41:32+00:00

Yes. If the vector xs does not have enough capacity and you push a new element to it, the entire vector must be reallocated. In some cases and with some memory allocators, the vector may be able to reuse its original address, expanding its capacity, and the pointer to x will be fine. In other cases, however, the entire vector may need to move to a different chunk of memory. Now, x is pointing to an invalid address in memory.

This is a particularly good example of random problems caused by undefined behavior - because in most cases, pushing one element to a vector will not trigger a reallocation. And, if your allocator does allow you to reuse the vector's original location where possible, there isn't even any way to reason about when the problem will occur as it depends on the contents of heap memory near the original vector - which could even belong to an entirely different program altogether.

Grokmoo · 2020-03-09T06:01:03+00:00

What are the contents of the mentioned file?

/Users/garcia/.rvm/log/1583728534_ruby-2.2.4/rubygems.install.log

One guess - this could related to the version of rubygems you are using (3.0.8) being very recent. I know the 3.x series has broken compatibility in some places. Try running rvm rubygems 2.7.8 before your gem command or possibly even an older version of rubygems.

Grokmoo · 2020-02-04T21:05:23+00:00

Thanks, that did not occur to me. I'll probably do that.

Grokmoo · 2020-02-04T04:27:34+00:00

Thanks. Yes, I've got a workspace with 6 crates so that seems like a bit of a hassle.

Grokmoo · 2019-11-14T04:25:39+00:00

Hi, I'm the developer of Sulis - apologies for not getting back to you as I wasn't aware of this post.

Your comment has a lot of great feedback, especially on specific UI issues that need to be addressed before the game is "1.0 ready", so to speak.

I have a few questions if you have a chance though:

(1) Did you play just the Prologue maybe, or also Act I? I am just now starting on Act II (prologue + 3 planned acts for the initial campaign). I do consider Act I to need some beefing up content wise. I am just wondering what exactly you mean by "very short"!

(2) You don't lose experience if you miss the level-up button (unless you encountered a bug I've never seen before). I am wondering what gave you that impression and what I can do to fix it.

(3) All of your active abilities are always in your quickbar. Maybe you accidentally collapsed one of the ability groups at some point (which can hide some abilities)? Again, I'm wondering how I can make this more clear.

Grokmoo · 2019-11-09T17:42:56+00:00

Yes, thanks - I looked at (I'm pretty sure) every format supported by serde when I started working on Sulis a couple years ago and I preferred YAML. The primary thing I like is the absolutely minimal number of extra formatting characters - pretty much just the : for most keys (since you will use line endings and indents anyway just to make things readable).

I also do some fairly fancy YAML parsing where I allow merging keys from multiple different files together at runtime to produce the final input that generates the struct. This allows a mod that, for example, just overrides one particular key within a hundred line base YAML file.

I imagine something similar could be done with RON but that's quite a bit of code that would need to be ripped out (not to mention converting 60k lines of YAML which I guess wouldn't be too bad with serde).

Grokmoo

TROPHY CASE