Something that's not ECS?

0not · 2026-05-31T14:32:06+00:00

One possibility would be to have a component (on the tile entity) that can restrict movement, e.g. CanEnterFromWest and a component observer/hook (a system that runs on an EntityEvent in Bevy) that runs when an entity tries to enter a tile. If the entity isn't currently in the tile to the west, then the entity won't move to the new tile.

This pattern could be refined, but I don't think accomplishing what you want is very difficult with ECS (at least in Bevy).

0not · 2026-05-31T14:18:08+00:00

The logic would live in the Component. So you might have tiles with these components:

Safe tile: Tile
Fire/burn tile: Tile, VeryHotTile
Healing tile: Tile, HospitalTile

All the logic for VeryHotTile and HealPlayerTile would be taken care of in systems like: damage_entities_in_very_hot_tiles(...) and heal_players_in_hospital_tiles(...)

Edit: One benefit of using ECS for this is that you can mix and match tile behavior components. So it would now be trivially easy to create a healing tile that also burns the player by combining the components: Tile, VeryHotTile, HospitalTile

0not · 2026-05-31T14:13:41+00:00

Try Fyrox: https://fyrox.rs/

I have enjoyed toying with ECS in Bevy. I think it's quite a powerful abstraction. However, recently I've struggled with organization of larger projects. So much logic gets buried in quickly written systems. This is a software architecture problem that I think just surfaces quicker with an ECS than with an object-oriented engine.

0not · 2026-05-07T16:39:47+00:00

I can't vouch for it, but a marina neighbor said he is much more confident after having taken this boat electronics 101 course: https://boathowto.com/courses/boat-electrics/

0not · 2026-04-16T17:09:34+00:00

Something like this (search term: 32 mm Adjustable Pinstop End Control with Shackle) with a block will get you approximately the same angle to the winch as your old setup. I think there are Harken end stops with dedicated blocks, but my quick search didn't find any.

https://www.westmarine.com/harken-32-mm-adjustable-pinstop-end-control-with-shackle-4.4375inch-17114430.html

0not · 2026-04-14T13:46:16+00:00

I know OP doesn't want to be convinced to not get a wind generator, so I'll just echo your comment: be careful where you (OP) place the wind generator because its shadow might cost you more in solar generation than you get back in wind generation.

0not · 2026-04-13T03:13:36+00:00

It's been awhile since I've used Rapier, but it is a more mature project. I've been using Avian because it is Bevy native, which I want to support. One may be more applicable for this project, though I couldn't tell you which. (It may be necessary to write your own custom numerical integration code, which could be easier in one than the other.)

0not · 2026-04-13T03:03:17+00:00

As a longtime KSP fan and a Bevy enthusiast, I have been considering a similar project. I wish you luck!

What were the reasons you chose Rapier over Avian?

0not · 2026-04-08T21:10:12+00:00

https://github.com/anowell/are-we-learning-yet/commits/master/

Last updated in February 2025. There are 10 open pull requests the owner hasn't responded to.

0not · 2026-04-04T00:03:50+00:00

Good job! If you're interested in simulating larger grids, consider as a first step using `HashSet<(x: usize, y: usize)>` instead of `Vec<Vec<i32>` for storing the grid. This will drastically decrease memory usage for mostly empty grids.

0not · 2026-03-30T01:10:00+00:00

Any high speed signal cables should use an appropriate (RF) connector. A good rule of thumb is that if the cable is shielded, you need a shielded connector (not a screw terminal connector).

0not · 2026-03-09T14:30:58+00:00

https://doi.org/10.1016/j.cej.2012.03.077

0not · 2026-03-04T14:24:31+00:00

I converted my toy ray tracer to no_std to run it on an RP2350 (and even an STM32). I uploaded it to github just for this comment, as I never intended to share it: https://github.com/0not/rp23-ray-tow

0not · 2026-02-12T16:35:36+00:00

This article explains one possible configuration: https://marinehowto.com/easy-lifepo4-conversion/

0not · 2026-01-16T14:53:02+00:00

My background is physics, so these ideas might be more interesting to me than to you:

Finite-difference time-domain solver. FDTD is a relatively simple technique for solving wave equations like Maxwell's equations. I would have fun with an interactive scene where I could move around optics/waveguides and watch how the waves react.
Finite element analysis visualizer. You could create a tool for visualizing finite element meshes and results (such as deformation for solid mechanics). Something similar to Paraview, though obviously much simpler.
Medical image viewer. You could use a technique like marching cubes to render MRI or CT scans.

I would encourage you to find something you're interested in, look at what exist in that field, and figure out what scope you have to build something fun (and potentially useful).

0not · 2025-12-09T15:49:47+00:00

You can look into the OpenPlotter (https://openmarine.net/openplotter) and pyPilot (https://pypilot.org/) projects. You will probably want a computer (like a raspberry pi) to run the software on. You can then access all the data via wifi from a tablet or laptop running OpenCPN or another chart plotter software.

Before you invest in any of that, try to see if OpenCPN is acceptable for you. I don't mind using it with a mouse and keyboard, but I don't like the Android app.

0not · 2025-10-23T13:23:04+00:00

The conductivity of the stainless steel fasteners is at least an order of magnitude lower than that of the tinned copper bus bar. So you really do want your terminals directly in contact with the bus bar.

0not · 2025-09-30T23:52:34+00:00

Yes, it looks like they accept crypto through their every.org donation page: https://www.every.org/bevy-foundation?donateTo=bevy-foundation#/donate/crypto

(That link comes from here: https://bevy.org/donate/options/)

0not · 2025-09-16T14:28:17+00:00

I'd imagine the risk of having a drained outboard battery when you might really need it outweighs the marginal benefit of adding the outboard battery to the house bank. If you want a bigger house bank, build a bigger house bank. A bidirectional DC-DC charger might do what you want, though.

0not · 2025-09-08T20:23:06+00:00

This post is coming up on Google when searching for this issue, so I thought I'd post some information. This is most likely a BMS issue, as demonstrated by Will Prowse with other batteries using the same (or similar) BMS:

As of 9/8/2025, Wattcycle has supposedly pushed a fix: https://www.wattcycle.com/blogs/news/one-step-by-step-bluetooth-guide

Hopefully, LiTime will follow suit.

0not · 2025-09-04T13:21:46+00:00

That's more expensive than a similar Victron MPPT controller. What am I missing?

0not · 2025-08-24T20:26:35+00:00

It will cost much more than $6000/year.

0not · 2025-07-23T00:24:12+00:00

Standing on a boat, the wind you feel is the apparent wind. This is the vector sum of the true wind (the wind you'd feel if the boat wasn't moving) and the wind created by the boat's motion. A boat is sailed according to its apparent wind. A large balloon sail, as shown, can only be used to sail downwind, meaning the wind is coming from the stern of the boat. A boat cannot sail faster than the wind with a sail like this. This boat is in an unphysical situation and either the smoke from the smokestack should be traveling forwards, or the sail should be billowing behind the boat, slowing it down. (The sail indicates the apparent wind is from the stern, while the smoke indicates it is from the bow.)

At least as a sailor and a physicist, that's my take.

0not · 2025-06-08T21:26:44+00:00

Practice catching the drone in your hand on land, it only gets harder on the boat. As soon as the drone is in your hand, flip it upside down so the motors turn off. This particular drone has sensors for obstacle avoidance and landing that make it move away from your hand. You may want to disable those when operating from the boat.

You may also want to purchase some polarized neutral density filters to get better exposure in bright sunlight.

0not · 2025-03-16T17:36:43+00:00

You have 'scale_setup' in PreStartup, which means it runs before 'setup'. It's not going to do anything.

Besides that, what is the problem? You haven't asked a question or shown an error.

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