Fantastic game! Can anyone recommend any books/courses on how to make simulations/games like this?
The author gives a few recommendations in the Readme:
https://github.com/s-macke/Interplanetary-Postal-Service/#fl...
Show HN: Lunar lander-type game with computational fluid dynamics
91–100 of 130 posts
Re: Show HN: Lunar lander-type game with computational fluid dynamics
#92Very cool and great use of webassembly. Bug report: if you get low enough in the last level and thrust upwards, the black smoke somehow mixes with the purple smoke outputs and they start instead covering the screen in black smoke. https://i.imgur.com/vHOrBWm.png
I also had problem with the last level - on the several attempts I had left, after about 10 seconds the sim would seem to bug out and it looked like there was a very, very strong wind along the bottom, which looked like it was friction-pulling the rest of the play area so that everything was blowing fast to the left, leaving it (apparently) unplayable.
Good fun, otherwise.
Re: Show HN: Lunar lander-type game with computational fluid dynamics
#93Am 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.
Keys get stuck for me too. Windows, Chrome 68.0.3440.106.
Re: Show HN: Lunar lander-type game with computational fluid dynamics
#94Awesome! Couldn't win yet, but I'll keep trying :)
On a more technical note, I wonder if you could use a Lattice-Boltzman-based flow simulation instead of classical CFD. Could be faster depending on "grid" size.
Great, great job!
Re: Show HN: Lunar lander-type game with computational fluid dynamics
#95About 30 FPS on a 13" 2015 MacBook Pro, 3.1 GHz i7, Chrome 69, and full screen 1200p.
I had a blast and really enjoyed the game. :)
Re: Show HN: Lunar lander-type game with computational fluid dynamics
#967867 points. Great game!
I would recommend that in a future version the craft is actually rotated by the "air" too for extra challenge, perhaps having rockets that rotate left and right and make the downward facing rocket more powerful to compensate.
Re: Show HN: Lunar lander-type game with computational fluid dynamics
#97Fantastic game! Can anyone recommend any books/courses on how to make simulations/games like this?
"Fluid Simulation for Computer Graphics" by Robert Bridson would be my suggestion for getting started with grid-based methods. The SIGGRAPH course notes on his website are very similar to the 1st edition. [1] It's no longer the state of the art (which is probably APIC), but the new methods are all based on the same fundamentals.
Particle-based methods like Smoothed Particle Hydrodynamics (SPH) are simpler to implement and are more intuitive than grid-based methods, but they're also harder to analyze mathematically. SPH is the method used by PixelJunk Shooter. "Fluid Simulation for Video Games" by Michael Gourlay is mostly about a different fluid technique (vortons), but does include SPH. [2]
[1]: https://www.cs.ubc.ca/~rbridson/fluidsimulation/
[2]: https://software.intel.com/en-us/articles/fluid-simulation-f...
Re: Show HN: Lunar lander-type game with computational fluid dynamics
#98Author 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…
Re: Show HN: Lunar lander-type game with computational fluid dynamics
#99Author 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…
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.
Re: Show HN: Lunar lander-type game with computational fluid dynamics
#100Author 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…
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...