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Author here. It started as a technical demonstration for fluid dynamics in the web browser. Then I saw the js13kgames competition and the decision was made to m

Author here. It started as a technical demonstration for fluid dynamics in the web browser. Then I saw the js13kgames competition and the decision was made to make a game out of it. A game in which the fluid mechanic counts. The decision for the Lunar Lander genre then was quiet easy. Does someone know more games then the two I mentioned in the README (Plasma Pong and Pixeljunk Shooter) with more or less realistic fluid dynamics?

deleted 8y ago
[deleted]
s-macke 8y ago
Maybe one of the more interesting technical aspects is the usage of WebAssembly here. I used Emscripten, so the main part is written in plain C. But I threw away all the JavaScript overhead and used just the plain size optimized wasm file. This was easier than expected.
vanderZwan 8y ago
Really cool stuff! Both technically and on the game design side > Does someone know more games then the two I mentioned in the README (Plasma Pong and Pixeljunk Shooter) with more or less realistic fluid dynamics? A friend of mine, Thomas ten Cate, tried but eventually shelved a project to make a fluid-dynamics based game tha he called Archimedes[0]. Before he moved on to other projects he blogged about it[1]. Does that count? [0] https://frozenfractal.com/games/archimedes/ https://frozenfractal.com/games/archimedes/ [1] https://frozenfractal.com/blog/tags/archimedes https://frozenfractal.com/blog/tags/archimedes
- s-macke 8y ago
  Well, only the games/projects count which I would add to the readme. And sorry, I have to say no here.
  - vanderZwan 8y ago
    No worries, I just wasn't clear on whether you wanted to know of more projects and devlogs on the same topic in general, or about finished games.
sourthyme 8y ago
You might be surprised that a lot of phones can run this at a decent frame rate. Adding mobile touch support could be good. It runs the start screen well on my Nexus 6P.
teddyh 8y ago
> Does someone know more games […] with more or less realistic fluid dynamics? There’s always the classic Liquid War: https://www.gnu.org/software/liquidwar6/ https://www.gnu.org/software/liquidwar6/
- s-macke 8y ago
  I watched the video. It doesn't look like liquid but something else. Some strange particle effects. But maybe I am wrong.
  - anotheryou 8y ago
    more like magnetic, acid sand
speeq 8y ago
It's really fun. Well done!
gameswithgo 8y ago
In college I was part of a team that made an FPS where cfd played a role, in the form of poison gas that could flow through the world https://www.clear.rice.edu/comp460/PRSite/tech/cfd.htm https://www.clear.rice.edu/comp460/PRSite/tech/cfd.htm
rzzzt 8y ago
Falling sand/powder games use particle physics for simulating the behavior of liquids: https://en.wikipedia.org/wiki/Falling-sand_game https://en.wikipedia.org/wiki/Falling-sand_game
- VectorLock 8y ago
  Yeah PowderToy springs to mind.
lukeschlather 8y ago
Spirits can basically be described as Lemmings with fluid mechanics. https://store.steampowered.com/app/210170/Spirits/ https://store.steampowered.com/app/210170/Spirits/
- s-macke 8y ago
  Watched a video. That looks close. However I think they used just some cheap particle effect.
Impossible 8y ago
Vessel (https://store.steampowered.com/app/108500/Vessel/ https://store.steampowered.com/app/108500/Vessel/) and more recently Claybook (https://www.claybookgame.com https://www.claybookgame.com) come to mind. They both use SPH fluids afaik. The upcoming Noita (https://store.steampowered.com/app/881100/Noita/ https://store.steampowered.com/app/881100/Noita/) has some particle based fluids. Tommy Referenes (Super Meatboy programmer) was working on an unreleased game called Goo (https://vimeo.com/1793371 https://vimeo.com/1793371). Also Riders on a Storm (http://www.the2bears.com/?page_id=652 http://www.the2bears.com/?page_id=652) a fluid dynamics shmup inspired by Plasma Pong.
- s-macke 8y ago
  This is great list. Thank you very much. I added most of the games. It is precisely through this post that I have a strong desire to follow your postings,blogs,.... Unfortunately there is no button for that. How did you find these games?
elwell 8y ago
https://www.youtube.com/watch?v=S4DlTFDI_M4 https://www.youtube.com/watch?v=S4DlTFDI_M4
- s-macke 8y ago
  I added it. Thanks
lutorm 8y ago
This is cool! However, you know space is ... empty, right? ;-) It also seems like the physics is off. Like you're flying through molasses. There's just a lot of damping. Finally, I think it would be more fun if the <--> rotated the ship for thrust vector control, instead of triggering lateral thrusters with no torque.
- s-macke 8y ago
  Yes I know. The simulation of the ship is not accurate. I had code written for more advanced physics but I skipped it for the js13kentry. Time was running short and I was afraid the game gets too hard. Actually you land on planets with an atmosphere. So you have some "dampening" from the atmosphere.
  - emmelaich 8y ago
    Jupiter's atmosphere would get molasses-y.
mappu 8y ago
I remember a DOS (or early Windows) game like this. A top-down, 2D game for two players or 1 + CPU. There were no obstacles, but every time you moved through the background fluid, more fluid was created in your colour (purple / pink), and you could envelop the enemy player by 'swooshing' it around over them. Can't remember the name...
- kylewlacy 8y ago
  Was it Ichor[1][2]? A bit later than the "early Windows" days I think (I remember hearing about it around 2007), but it also matches your description and it was the first thing I thought of after playing the game in the post [1] https://www.youtube.com/watch?v=9MGoyAiPQog https://www.youtube.com/watch?v=9MGoyAiPQog [2] https://www.fun-motion.com/physics-games/ichor/ https://www.fun-motion.com/physics-games/ichor/
  - mappu 8y ago
    Yes! Thank you.
  - s-macke 8y ago
    Thanks for posting. I added it to my list. Will try it later if still runs.
  - MzHN 8y ago
    I love Ichor! Back in 2013 I e-mailed the original developers with some WebGL fluid dynamics demos, and asked if they'd be interested in porting Ichor to WebGL, and they were, but it died down soon after. The Ichor source is on GitHub as well, although it doesn't have a license. https://github.com/luqui/ichor https://github.com/luqui/ichor It would be so awesome to have this game ported to WebGL, or even just to GPU in general.
anc84 8y ago
Lavalanche: http://www.pouet.net/prod.php?which=59596 http://www.pouet.net/prod.php?which=59596

deleted 8y ago

[deleted]

s-macke 8y ago

Maybe one of the more interesting technical aspects is the usage of WebAssembly here. I used Emscripten, so the main part is written in plain C. But I threw away all the JavaScript overhead and used just the plain size optimized wasm file. This was easier than expected.

vanderZwan 8y ago

Really cool stuff! Both technically and on the game design side > Does someone know more games then the two I mentioned in the README (Plasma Pong and Pixeljunk Shooter) with more or less realistic fluid dynamics? A friend of mine, Thomas ten Cate, tried but eventually shelved a project to make a fluid-dynamics based game tha he called Archimedes[0]. Before he moved on to other projects he blogged about it[1]. Does that count? [0] https://frozenfractal.com/games/archimedes/ https://frozenfractal.com/games/archimedes/ [1] https://frozenfractal.com/blog/tags/archimedes https://frozenfractal.com/blog/tags/archimedes

s-macke 8y ago
Well, only the games/projects count which I would add to the readme. And sorry, I have to say no here.
- vanderZwan 8y ago
  No worries, I just wasn't clear on whether you wanted to know of more projects and devlogs on the same topic in general, or about finished games.

sourthyme 8y ago

You might be surprised that a lot of phones can run this at a decent frame rate. Adding mobile touch support could be good. It runs the start screen well on my Nexus 6P.

teddyh 8y ago

> Does someone know more games […] with more or less realistic fluid dynamics? There’s always the classic Liquid War: https://www.gnu.org/software/liquidwar6/ https://www.gnu.org/software/liquidwar6/

s-macke 8y ago
I watched the video. It doesn't look like liquid but something else. Some strange particle effects. But maybe I am wrong.
- anotheryou 8y ago
  more like magnetic, acid sand

speeq 8y ago

It's really fun. Well done!

gameswithgo 8y ago

In college I was part of a team that made an FPS where cfd played a role, in the form of poison gas that could flow through the world https://www.clear.rice.edu/comp460/PRSite/tech/cfd.htm https://www.clear.rice.edu/comp460/PRSite/tech/cfd.htm

rzzzt 8y ago

Falling sand/powder games use particle physics for simulating the behavior of liquids: https://en.wikipedia.org/wiki/Falling-sand_game https://en.wikipedia.org/wiki/Falling-sand_game

VectorLock 8y ago
Yeah PowderToy springs to mind.

lukeschlather 8y ago

Spirits can basically be described as Lemmings with fluid mechanics. https://store.steampowered.com/app/210170/Spirits/ https://store.steampowered.com/app/210170/Spirits/

s-macke 8y ago
Watched a video. That looks close. However I think they used just some cheap particle effect.

Impossible 8y ago

Vessel (https://store.steampowered.com/app/108500/Vessel/ https://store.steampowered.com/app/108500/Vessel/) and more recently Claybook (https://www.claybookgame.com https://www.claybookgame.com) come to mind. They both use SPH fluids afaik. The upcoming Noita (https://store.steampowered.com/app/881100/Noita/ https://store.steampowered.com/app/881100/Noita/) has some particle based fluids. Tommy Referenes (Super Meatboy programmer) was working on an unreleased game called Goo (https://vimeo.com/1793371 https://vimeo.com/1793371). Also Riders on a Storm (http://www.the2bears.com/?page_id=652 http://www.the2bears.com/?page_id=652) a fluid dynamics shmup inspired by Plasma Pong.

s-macke 8y ago
This is great list. Thank you very much. I added most of the games. It is precisely through this post that I have a strong desire to follow your postings,blogs,.... Unfortunately there is no button for that. How did you find these games?

elwell 8y ago

https://www.youtube.com/watch?v=S4DlTFDI_M4 https://www.youtube.com/watch?v=S4DlTFDI_M4

s-macke 8y ago
I added it. Thanks

lutorm 8y ago

This is cool! However, you know space is ... empty, right? ;-) It also seems like the physics is off. Like you're flying through molasses. There's just a lot of damping. Finally, I think it would be more fun if the <--> rotated the ship for thrust vector control, instead of triggering lateral thrusters with no torque.

s-macke 8y ago
Yes I know. The simulation of the ship is not accurate. I had code written for more advanced physics but I skipped it for the js13kentry. Time was running short and I was afraid the game gets too hard. Actually you land on planets with an atmosphere. So you have some "dampening" from the atmosphere.
- emmelaich 8y ago
  Jupiter's atmosphere would get molasses-y.

mappu 8y ago

I remember a DOS (or early Windows) game like this. A top-down, 2D game for two players or 1 + CPU. There were no obstacles, but every time you moved through the background fluid, more fluid was created in your colour (purple / pink), and you could envelop the enemy player by 'swooshing' it around over them. Can't remember the name...

kylewlacy 8y ago
Was it Ichor[1][2]? A bit later than the "early Windows" days I think (I remember hearing about it around 2007), but it also matches your description and it was the first thing I thought of after playing the game in the post [1] https://www.youtube.com/watch?v=9MGoyAiPQog https://www.youtube.com/watch?v=9MGoyAiPQog [2] https://www.fun-motion.com/physics-games/ichor/ https://www.fun-motion.com/physics-games/ichor/
- mappu 8y ago
  Yes! Thank you.
- s-macke 8y ago
  Thanks for posting. I added it to my list. Will try it later if still runs.
- MzHN 8y ago
  I love Ichor! Back in 2013 I e-mailed the original developers with some WebGL fluid dynamics demos, and asked if they'd be interested in porting Ichor to WebGL, and they were, but it died down soon after. The Ichor source is on GitHub as well, although it doesn't have a license. https://github.com/luqui/ichor https://github.com/luqui/ichor It would be so awesome to have this game ported to WebGL, or even just to GPU in general.

anc84 8y ago

Lavalanche: http://www.pouet.net/prod.php?which=59596 http://www.pouet.net/prod.php?which=59596