Cities: Skylines II

Cities: Skylines II

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Royal Oct 27, 2023 @ 1:44pm
The water physics are broken?
I don't get how the water physics are so bad, I had a weird feeling when trying to make a hydro dam work that something was wrong so i did a test

I walled off with terraforming the entire of the waterway of the map so no water could leak out and it all had to be pushed through the dam

I also put the dam pretty high up so it was a huge drop to the basin of the dam

The water was then left to accumulate behind the damn for literally hours of 3x time with my mouse cursor left as a marker on where the water level was

The water after a set point never went up at all

The water movement arrows are still all facing forwards towards the damn so it's not like the water isn't flowing anymore

So I thought ♥♥♥♥ it, artificial reservoir filling with sewage pumps, so I put a ton of pumps on the side which should now be filling the reservoir with ♥♥♥♥ right? Nope

The water level is still exactly the same as it was an hour ago with 3x game time

Is there some secret magic word I need to use to get the water level to rise? because it seems beyond broken to me
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Showing 1-9 of 9 comments
AceOfSpades Oct 27, 2023 @ 8:51pm 
I have two working dams on the map with the river thru the center. Dammed up on the of little streams and dammed up the main river.
It took hours to fill the streem lake which was about a single square you buy in the map screen big and maybe 200 feet deep. And when I say hours I mean hours of real time, two days of playing actually.
The river one filled up in about an hour.
The river one only got up to 11% max of what it is possible and the stream only 5%(efficiency caused by "low water" according to the tool tip).
It acts like the water in the game actually has physical mass and what ever water emitter the map maker put on has an output flow. So to fill up whatever space is behind the dam its output of the water emitter versus volume of the space it has to fill.
So the big lake being fed with the little stream took maybe 8 real time hours while the river fed dam/lake filled up in 1-2 because the amount of volume was less AND the out put of the water emitter that feds the river on the map has more out flow than the stream one did.

BUT!!
The dam is broken because even the river flow was not strong enough to deliver and sustain a water level higher than 11% efficiency. So the electricity output was horrible even when they started flowing. Plus they look like utter garbage with water basically leaking out from all around the dam lol it looks like its going to burst when they are operating.
Last edited by AceOfSpades; Oct 27, 2023 @ 8:53pm
Royal Oct 28, 2023 @ 2:28am 
Originally posted by AceOfSpades:
I have two working dams on the map with the river thru the center. Dammed up on the of little streams and dammed up the main river.
It took hours to fill the streem lake which was about a single square you buy in the map screen big and maybe 200 feet deep. And when I say hours I mean hours of real time, two days of playing actually.
The river one filled up in about an hour.
The river one only got up to 11% max of what it is possible and the stream only 5%(efficiency caused by "low water" according to the tool tip).
It acts like the water in the game actually has physical mass and what ever water emitter the map maker put on has an output flow. So to fill up whatever space is behind the dam its output of the water emitter versus volume of the space it has to fill.
So the big lake being fed with the little stream took maybe 8 real time hours while the river fed dam/lake filled up in 1-2 because the amount of volume was less AND the out put of the water emitter that feds the river on the map has more out flow than the stream one did.

BUT!!
The dam is broken because even the river flow was not strong enough to deliver and sustain a water level higher than 11% efficiency. So the electricity output was horrible even when they started flowing. Plus they look like utter garbage with water basically leaking out from all around the dam lol it looks like its going to burst when they are operating.

Mine technically worked on another map but was always low water level at around 52% despite there being a large river constantly flowing in behind it

Games just busted right now, the water physics reminds me of minecraft with the really slow update rate so it just moves super slow rather than you know, water like

I think I was getting around 130MW from a dam that was supposed to get like 275MW, which is awful

The experiment I did above however never filled at all after a certain point so something is definitely broken as the water had nowhere else to go, had 800,000m3 of ♥♥♥♥ flowing into it per month and also was 2 rivers combined into 1 and the arrows showed still flowing water

I'll come back in a few months when they fix all the annoying bugs
Prometheus Oct 28, 2023 @ 2:47am 
They likely use a similar system for generating water that 1 did. This being a water "source" that registers a maximum height. It then creates water up to that height and stops. You are right, its no Timberborn water sim but its also not Timberborn and doesn't need a super high demand sim.

As for your outflow pipes test. How many sewage pipes did you use? Unless it was around 50 all pouring full power (as in your city was big enough to produce enough sewage to keep them pouring full power) an hour wouldn't have made a dent.
Royal Oct 28, 2023 @ 2:50am 
Originally posted by Promethian:
They likely use a similar system for generating water that 1 did. This being a water "source" that registers a maximum height. It then creates water up to that height and stops. You are right, its no Timberborn water sim but its also not Timberborn and doesn't need a super high demand sim.

As for your outflow pipes test. How many sewage pipes did you use? Unless it was around 50 all pouring full power (as in your city was big enough to produce enough sewage to keep them pouring full power) an hour wouldn't have made a dent.

It was quite a few hours I left it running at 3x speed, and unsure on the amount of pumps I was just reading the output from the info tab on how much was being produced

Look at the water physics in CS1 and now look at CS2, CS2 is like 10 steps backwards
BigYundol Oct 28, 2023 @ 2:51am 
Water ist broken for me at the moment. I hoped to get better physics than in the precessor, but we got a worser one... (hopefully only at the moment and CO will fix it in an update.)
Royal Oct 28, 2023 @ 2:54am 
Originally posted by TravieMcCoy:
https://www.youtube.com/watch?v=2JVfMJ-dp_I&ab

Yep I've also noticed this too, water just magically appears out of terrain lol


Originally posted by TAA BigYundol:
Water ist broken for me at the moment. I hoped to get better physics than in the precessor, but we got a worser one... (hopefully only at the moment and CO will fix it in an update.)

I really hope they rework it, because otherwise its on par with minecraft with the horrible slow ticked updates it gives to the water
TkMv Oct 28, 2023 @ 2:58am 
Originally posted by HitPlay:
Yep I've also noticed this too, water just magically appears out of terrain lol

water not only appears out of terrain, water also does't flow anywhere, but just stands still
Last edited by TkMv; Oct 28, 2023 @ 2:59am
Sandiozo Oct 28, 2023 @ 3:02am 
if they havent changed anything about how water works then first water does evaporate. So when the water gets spread out on more surface it might have reached its max refill and evaporate level. Second, if the water level reached the same height as the water spawner, the spawner does not let it go above its height and starts sucking the water back.

You most likely need more water sources to help fill up the reservoir. Could add seweg discharge pipes to help fill it up
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Date Posted: Oct 27, 2023 @ 1:44pm
Posts: 9