Show HN: Lunar lander-type game with computational fluid dynamics • Hacker News Board

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#41

Post by anotheryou » Sat, Sep 15, 2018, 2:25 PM UTC

s-macke wrote: post #37

teddyh wrote: post #34

Earlier quoted context omitted.

> 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/

I watched the video. It doesn't look like liquid but something else. Some strange particle effects. But maybe I am wrong.

more like magnetic, acid sand

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#42

Post by soneca » Sat, Sep 15, 2018, 2:25 PM UTC

s-macke wrote: post #28

soneca wrote: post #25

I just keep exploding no matter how slowly I reach the landing pad :( Any tips of what am I doing wrong?

Do you see the green bar on the speed indicator on the right side?

Yes, every time I land with the white bar inside the green area, it explodes.

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#43

Post by AndrewStephens » Sat, Sep 15, 2018, 2:27 PM UTC

This is great - especially the pixel-perfect collision detection. But honestly, these colonists don't really deserve mail service if they insist on building their cities in such difficult environments.

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#44

Post by gameswithgo » Sat, Sep 15, 2018, 2:32 PM UTC

s-macke wrote: post #2

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 fl…

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

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#45

Post by Chris_Chambers » Sat, Sep 15, 2018, 2:34 PM UTC

Why are you hosting it on GitHub? Something that should have been a 15 second diversion instead becomes a Byzantine nightmare. After all these years I still have no idea how to run something that’s hosted on GitHub, and neither do 99% of people on earth. Is it even possible to do? Or do you honestly expect people to download your code and run it locally?

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#46

Post by rzzzt » Sat, Sep 15, 2018, 2:35 PM UTC

s-macke wrote: post #2

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 fl…

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

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#47

Post by soneca » Sat, Sep 15, 2018, 2:38 PM UTC

soneca wrote: post #42

s-macke wrote: post #28

Earlier quoted context omitted.

Do you see the green bar on the speed indicator on the right side?

Yes, every time I land with the white bar inside the green area, it explodes.

I opened it on Firefox and everything worked out fine.

I realized that on Chrome all the graphics were weird. No colors on the home page, I couldn't see the windows at the buildings. Maybe there is something not rendering right in Chrome.

I use Chrome Version 60.0.3112.113 (Official Build) (64-bit) on Fedora 25

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#48

Post by blunte » Sat, Sep 15, 2018, 2:43 PM UTC

Am I the only one experiencing a game-breaking bug/behavior?

The D thrust gets stuck on if you press it once, and randomly the W comes on and gets stuck too.

Also, after the first ship, every additional ship starts with W and D thrusts on, permanently.

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#49

Post by G4BB3R » Sat, Sep 15, 2018, 2:43 PM UTC

I died in the last level, in the last life on the platform but with high speed :(

Re: Show HN: Lunar lander-type game with computational fluid dynamics

#50

Post by sokoloff » Sat, Sep 15, 2018, 2:50 PM UTC

blunte wrote: post #48

Am I the only one experiencing a game-breaking bug/behavior? The D thrust gets stuck on if you press it once, and randomly the W comes on and gets stuck too. Also, after the first ship, every additional ship starts with W and D thrusts on, permanently.

Doesn't happen here. (MacOS Chrome 68.0.3440.106)