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[Grimlocke]

Inspired by some topic about waterfalls I decided to make a worldgen parameter set that makes worlds with a crazy amouth of rivers. Turned out pretty well after some expirimentation with erosion, elevations, etc.

The eventual result:
- It makes 257x129 worlds, allowing it have a bit more variation in elevation.
- The maximum number of rivers, 800 of them. They tend to form about 4 majour rivers, which often reach the maximum width of 47 tiles.
- Neat waterfalls! Current record is 22 z-levels. See below for more.
- Oceans edges. No oceans in the middle because erosion takes them out for being too small. This is intentional, as oceans eat rivers.
- Tiny lakes! Mostly alongside mountains. Makes for some pretty nice mountainside fortresses. One even had a tine little island in the middle attached by 2 embark tiles to the land.
- Thin mountains of varying steepness, for plenty of mountainside fortress sites.
- Lots of forests, hills and wetlands, but at least a bit of the other terain types as well.
- A thin polar cap either south or north of the map. Kept it thin due to rivers responding weirdly to larger ones (as in, removing them. Even outside the frozen biomes)
- Havnt dont much with the underground. Just slightly increased openness and water.
- Plenty of caves, 60 in the mountains and 80 ouside them. Civilisations seem able to survive them for 1000 years, though the elves have a hard time. Most get wiped out early, and the ones that surive get picked on by the rest (harhar). So if you dont want your pointy eared friends all gone you might wanna check up on them after worldgen.

Spoiler: The parameters. To use, paste them into world_gen.txt (click to show/hide)

Code: [Select]

[WORLD_GEN]
[TITLE:Grim's Riverworld]
[DIM:257:129]
[EMBARK_POINTS:1274]
[END_YEAR:1050]
[BEAST_END_YEAR:50:26]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:0]
[ELEVATION:65:400:3200:3200]
[RAINFALL:0:90:240:480]
[TEMPERATURE:0:160:40:100]
[DRAINAGE:0:83:360:360]
[VOLCANISM:25:100:900:450]
[SAVAGERY:0:100:600:600]
[ELEVATION_FREQUENCY:5:2:1:1:4:2]
[RAIN_FREQUENCY:4:2:0:1:3:6]
[DRAINAGE_FREQUENCY:4:7:2:1:3:6]
[TEMPERATURE_FREQUENCY:2:1:0:6:2:2]
[SAVAGERY_FREQUENCY:4:2:1:1:0:4]
[VOLCANISM_FREQUENCY:5:2:0:1:0:4]
[TITAN_NUMBER:350]
[TITAN_ATTACK_TRIGGER:50:0:100000]
[DEMON_NUMBER:128]
[GOOD_SQ_COUNTS:100:1600:0]
[EVIL_SQ_COUNTS:100:1200:3000]
[PEAK_NUMBER_MIN:120]
[PARTIAL_OCEAN_EDGE_MIN:0]
[COMPLETE_OCEAN_EDGE_MIN:4]
[VOLCANO_MIN:80]
[REGION_COUNTS:SWAMP:0:0:0]
[REGION_COUNTS:DESERT:0:0:0]
[REGION_COUNTS:FOREST:0:0:0]
[REGION_COUNTS:MOUNTAINS:0:0:0]
[REGION_COUNTS:OCEAN:0:0:0]
[REGION_COUNTS:GLACIER:0:0:0]
[REGION_COUNTS:TUNDRA:0:0:0]
[REGION_COUNTS:GRASSLAND:0:0:0]
[REGION_COUNTS:HILLS:0:0:0]
[EROSION_CYCLE_COUNT:1]
[RIVER_MINS:400:800]
[PERIODICALLY_ERODE_EXTREMES:1]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:5000]
[CAVERN_LAYER_COUNT:3]
[CAVERN_LAYER_OPENNESS_MIN:0]
[CAVERN_LAYER_OPENNESS_MAX:90]
[CAVERN_LAYER_PASSAGE_DENSITY_MIN:0]
[CAVERN_LAYER_PASSAGE_DENSITY_MAX:75]
[CAVERN_LAYER_WATER_MIN:30]
[CAVERN_LAYER_WATER_MAX:100]
[HAVE_BOTTOM_LAYER_1:1]
[HAVE_BOTTOM_LAYER_2:1]
[LEVELS_ABOVE_GROUND:25]
[LEVELS_ABOVE_LAYER_1:5]
[LEVELS_ABOVE_LAYER_2:1]
[LEVELS_ABOVE_LAYER_3:1]
[LEVELS_ABOVE_LAYER_4:1]
[LEVELS_ABOVE_LAYER_5:2]
[LEVELS_AT_BOTTOM:1]
[CAVE_MIN_SIZE:5]
[CAVE_MIN_SIZE:5]
[CAVE_MAX_SIZE:200]
[MOUNTAIN_CAVE_MIN:60]
[NON_MOUNTAIN_CAVE_MIN:80]
[ALL_CAVES_VISIBLE:1]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:40]
[TOTAL_CIV_POPULATION:-1]
[PLAYABLE_CIVILIZATION_REQUIRED:1]
[ELEVATION_RANGES:0:0:0]
[RAIN_RANGES:0:0:0]
[DRAINAGE_RANGES:0:0:0]
[SAVAGERY_RANGES:0:0:0]
[VOLCANISM_RANGES:0:0:0]

Spoiler: Example world map, be warned, its large (click to show/hide)

The 22-z-level waterfall got genned with [SEED:2687489832]. Its at the intersection of 2 majour rivers.

Spoiler: Embark location (click to show/hide)

The stone types will probabaly turn out different.

There is something weird about that waterfall though. It has a stream fall into one majour river of 27 tiles wide, which then turns into stream-width of 4 tiles and falls into the other majour river 22 levels below. Kind of weird, but definetelly the most high-pressure waterfall I ever seen. Figured some might want to check it out. Just copy paste that seed tag into the worlgen parameters to gen that particular world.

Edit: currentely it has a weird problem causing large areas to have their river wiped out during generation. See the southeast of the example map. Im not sure why it does this, solutions would be appreciated.

[zwei]

How are aquifers?

I love maps with lots of rivers and my favorite fort site is where two or more rivers join; but usually those embarks have rather annoying aquifer infestations.

[Ilmoran]

How are aquifers?

I love maps with lots of rivers and my favorite fort site is where two or more rivers join; but usually those embarks have rather annoying aquifer infestations.

If you don't want aquifers at all, you could remove the aquifer tags from the relevant stone/soil types.

[Morrigi]

How are aquifers?

I love maps with lots of rivers and my favorite fort site is where two or more rivers join; but usually those embarks have rather annoying aquifer infestations.

If you don't want aquifers at all, you could remove the aquifer tags from the relevant stone/soil types.

This.

[Urist Imiknorris]

Ye gods, a major river dropping 22 z-levels into another major river?

Badass.

EDIT: HOLY FUCK THERE'S TWO OF THEM ON THE SAME RIVER. *head explodes*

Downstream from the embark in the OP:

"Only" 15 z-levels. And even better, the river flowing into this one goes through a scorching terrifying tropical dry broadleaf forest (skarp, skippos, skelephants, rain of lava).

I think I just had an evilgasm.

[Grimlocke]

It didnt have any aquifers when I checked the site, but as with rocks it might be different per generated world due to mods.

[Grimlocke]

Just found another river... thing. I think Armok must have felt artistic here.

Spoiler (click to show/hide)

The bit that sticks out on the right is a small waterfall

Its got a hand! Freaky. Well, its actualy a river source. I seen them in some weird places before but this beats the lot.

Also, didnt even notice that other waterfall.

[cephalo]

Wow, I didn't even know you could mix dimension sizes like that!