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Working on another slider for #mapgen4 — this one controls how deep the "folds" are on the sides of mountains
One thing I was trying to get in #mapgen4 <https://t.co/S939xQ8KV4> was that rivers should be straighter along slopes, using their energy to carve canyons, but rivers should meander in flat areas, using their energy to form curves
Not entirely successful but worked sometimes—
Turns out this has been a problem for a long time, and there are *many* related bugs that I'm now discovering (seven so far). For example you can see this jagged edge yourself if you zoom out and rotate the #mapgen4 map. The edge should be smooth. Boundary points all messed up.
Part of the reason it's hard to work on #mapgen4 is that I hate the code but love the output. So I spend all my time staring at the output instead of working on the code :-(
The public version uses 50k triangles. Here I pushed it up to 1500k triangles to see what would happen…
Here's 738k polygon regions (4.7M rendered triangles). Way too much detail to show in a 2048x2048 screenshot. You can see the hills are looking too regularly spaced. The creeks are too small to see. #mapgen4 was not designed for this.
To keep #mapgen4 fast I precalculated 25k polygons. Without that optimization I can vary the polygon count. These are with 30k, 46k, 82k, 185k
Ok, unfortunately changing noise2D to noise3D changes the map shapes, and I want to keep the old map shapes. So instead of modifying #mapgen4's page I made a copy here:
https://t.co/2KXSScGsRq
Enjoy! (you can no longer paint on this map because the animation will wipe it out)
Just for fun. The #mapgen4 code had much more potential than what the web page showed off, but a lot of it didn't fit the "interactively paint a map" goal for the web page.
One of my goals with #mapgen4 (2018) was to make the mountains look like I had drawn them by hand. It worked better than I imagined. Bonus: they're actually 3d shapes so they can be rotated. Sometimes I just stare at these procedurally generated mountains and smile 😄
Playing around with #mapgen4 reminded me that it is capable of more landscapes than what the ui allows. I never implemented a ui for canyons and other geological features, but things like this are possible in the underlying generator and renderer:
While I was cleaning up the #mapgen4 code I added a parameter controlling the mountain shape. Try the new mountain_sharpness slider.
https://t.co/S939xPQBGW
(I'm not planning to do a lot with mapgen4 though. I'm cleaning it up because I want to use the code for a new project.)
One reason I'm doing this is that #mapgen4 is *stuck* in a local maxima, thanks to all the optimizations I made to make it run at interactive speeds. I'd like to make a new project based on this code but I need to make it malleable again. See https://t.co/9zjfMEaWOy for context
When I'm working with simple but inefficient code, I can move from design A to B to C easily. When I optimize the code, I'm often pushing myself into a local minima. It's not only harder to change designs, I often can't even *see* the other designs anymore. Mapgen4 is stuck.
These two look the same, right? Good. I'm updating the #mapgen4 code to work with es6 modules + esbuild and want to make sure everything works the same.
Also: I had forgotten how much FUN it is to play with mapgen4 on a touch screen, especially a tablet.
https://t.co/S939xPQBGW
すごいツールその２
Along with the previous one, a great tool to instantly bring your map ideas to life!!
https://t.co/jC8JygMIEX
#mapgen4 @redblobgames
#LoMejorDeLaWeb #Mapgen4 es una herramienta online que nos permite crear mapas y aprender sobre cómo trabaja la madre Naturaleza al mismo tiempo.
https://t.co/K1DhC1R7Vq
#mapgen4 has some sliders to customize the output style for your needs. Compare the default to some variations you can make. I think most of the variants aren't useful but I left the devel sliders in there in case you want to explore.
https://t.co/S939xPQBGW
I've not been inspired to write or program lately. I think #mapgen4 took more out of me than I realized. That's ok; I've been spending more time relaxing and reading. This week: Sync, by @stevenstrogatz . Fascinating stuff!
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