I forgot rule one of doing procgen screenshots... ... make everything rainbow coloured as soon as you can. #procgen #citygeneration #procedural - ThreadSky

kaynsd.itch.io • 18 days ago

I forgot rule one of doing procgen screenshots...
... make everything rainbow coloured as soon as you can.

#procgen #citygeneration #procedural

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lorenschmidt.bsky.social•18 days ago

ooh this is very intriguing!

kaynsd.itch.io•17 days ago

Thanks. Its a system I've been tinkering with for a while. Next step will be to add roads of varying thicknesses and growing the city over time.

lorenschmidt.bsky.social•17 days ago

i'd be curious to know how your waterways work! i like that they're multiscale. are they on their own grid, separate from the visible one? (if you don't feel like going into details, no obligation at all.)

kaynsd.itch.io•17 days ago

They are indeed separate to the grid of the city block. A lot of this requires me using ClipperLib to build paths to cut out of a landmass, so all the rivers are really negative space in said landmass right now (is fine... Not dealing with real hills or height levels here. I'll fake that later)

kaynsd.itch.io•17 days ago

Rivers are given a start point and strength, and an end point and strength, and a chaos rating, and carve their way across the map, and the path is midpoint displaced (value based on their chaos)

kaynsd.itch.io•17 days ago

This continues until each of their segments is (at the moment) about 10 meters long, and the nodes are assigned their current strength, lerping along the river from the start to the end. At the moment everything is just lines.

wick.works•17 days ago

😍 gorgeous

kaynsd.itch.io•17 days ago

Thanks Olive~~ :D

vorpalcoil.bsky.social•17 days ago

It's the top strat for making lines look pretty.

kaynsd.itch.io•17 days ago

Make your debug drawings look better with this one neat trick!!!11!!

Color.FromHSV(Random, 1,1);

vorpalcoil.bsky.social•17 days ago

Lifehack: the visible spectrum.

jeanpaulsoftware.bsky.social•17 days ago

Very slick. Is this using the 'tensor' / vector flow field approach?

kaynsd.itch.io•17 days ago

Nothing as complicated. After the steps for building a landmass out of rivers and coasts (see the replies I did to Loren for the rough explanation there) I've simply got a Voronoi map over it based on a Poisson Distribution of one every 200m or so (about twice the size of a city block)

kaynsd.itch.io•17 days ago

The problem of course with a Voronoi Diagram is that blocks don't tend to be chaotic shapes, they tend to be squares, and the intersections between them in cities tend to be quads, certainly in American or Canadian or modern increasingly in European and Asian cities.

kaynsd.itch.io•17 days ago

But one thing you can guarantee about Voronoi diagrams is that they give you convex shapes. And one thing you can always do to a convex shape to get quads is to run a basic subdivision over it, splitting all edges and connecting them to the middle as a polygon fan. Now everything is kite-like quads.

kaynsd.itch.io•17 days ago

There's one or two steps extra I do though. First, the initial points are Lloyd Relaxed to make everything a little less haphazard. Secondly, for any shapes that were hexagons, instead of the above step I just cut them into two trapezoidal quads.

kaynsd.itch.io•17 days ago

Those steps are somewhat important; without them entire thing becomes concentric rings and you never get any long run on roads. Relaxing everything tends the map over to hexagons, and the cutting hexs into quads means there'll be longer run on roads, especially as the next step is to subdivide again

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