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[NW_Kohaku]

Great, now I have a vision of someone whose brain catches fire because they were thinking so hard, and I can't figure out whether to be terrified or amused by that notion... I'm going to have to make that into an expression somehow.

[isitanos]

Toady, with your mineral veins rework are we gonna see the return of chasms and underground rivers?

... Given that underground rivers could be seen as a "vein of water" and various kinds of natural tunnels (i.e. dried underground rivers or lava tunnels) could be seen as a "vein of air", it doesn't seem so far-fetched. Presumably chasms wouldn't be bottomless any more, but they were a nice variation in the landscape.


Of course, some kind of underground erosion model would be even better, and you could use it to wash some minerals like gold down the riverbed. And have rivers that disappear underground somewhere and surface far away: a nice suicide boat trip for the courageous adventurer.

[tfaal]

I don't understand how a river can surface if they go downhill. :\

[Neonivek]

I don't understand how a river can surface if they go downhill. :\

Momentum

[Rose]

or the surface of the ground falling faster than the river level. probably exiting  at a cliff-face.

yeah, that's what we need, cliff-faces, with exposed caverns.

[Areyar]

Now that hidden things in caverns and items belonging to tribes and other inhabitants etc no longer are tracked as if belonging to the player, exposed caverns seem closer than ever.

[NW_Kohaku]

I don't understand how a river can surface if they go downhill. :\

The same way that water will go up a "U" shaped pipe or chamber if you add enough water in, and flood your fortress.

Hydrostatic Pressure.

If the source of the river is on a higher elevation than where the river resurfaces, and the bedrock around the river is impermeable to water, it can act like a natural bit of plumbing, and the upriver water will simply force the water uphill if there is no other place for that water to go (typically creating a lake if there is no "roof" overhead to make it an underground river), although it would more likely just create a "natural spring" when the underground river simply hit permeable ground again, it wouldn't just be an open cavern with water rushing out.

Just keep in mind that rivers start in the mountains and other highlands, and flow to the oceans or inland seas, which means there's always pressure from behind.

[G-Flex]

He's also forgetting that something can be underground in one spot and aboveground in another spot even if it doesn't change elevation; the elevation of the land changes. A perfectly horizontal river can enter, say, a cave, and eventually wind up 500 feet underground as elevation changes around it.

[TolyK]

or the surface of the ground falling faster than the river level. probably exiting  at a cliff-face.

yeah, that's what we need, cliff-faces, with exposed caverns.

I feel the urge...
...
I will do it in about 5 minutes.

[TolyK]

hey look I did it!
On caverns showing on cliffs, and such

[SalmonGod]

cleaned up a lag problem from ghosts and some other general lag issues

Would I be wrong to read this as some known causes of disproportionate FPS hits have been alleviated?

[Askot Bokbondeler]

don't count on a complete overhaul of the pathing system, yet

[monk12]

Ghosts and bone artifacts fixed! Joy!

[MrWiggles]

Danke for the update Toady!

[Urist Imiknorris]

I like that last fix. I want to know what sort of embarassing names the goblins call their steeds and trolls.