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A Slower Speed of Light

gamelab.mit.edu

51–60 of 108 posts

Re: A Slower Speed of Light

#51

I don't understand why the colors are changing. Shouldn't the doppler effect not apply if the speed of light is the same for all observers?

The Doppler effect is how Hubble determined the universe is expanding. All of the galaxies around us are shifted red.

Re: A Slower Speed of Light

#52
post #30

Earlier quoted context omitted.

I imagine it would be quite difficult to have working multiplayer relativistic mechanics. So far, I can only see single player mechanics working, which would restrict the appeal of such a game.

Yeah, multiplayer without a unified sense of "time" doesn't seem to work very well...

I encourage you to look at Achron http://www.achrongame.com/ , a RTS with timetravel as an integral gameplay mechanic. It doesn't deal with relativity explicitly, but does have multiple independent timestreams.

Re: A Slower Speed of Light

#53
post #33

Earlier quoted context omitted.

With sound waves, your speed is added to the speed of sound and you hear a different note. With light, the speed remains at c, but perceived energy of the photons is still affected (energy must be preserved after all). And energy ~ wavelength ~ color. You can also think about it being one of these "zero (weight of a photon at rest) multiplied by infinity (energy of objects moving at c) gives a finite number (actual e…

So, the speed of an observer affects its perceived energy of light. How does "conservation of energy" apply? (I don't know what is contributing to the energy of this system.)

If you imagine an idealized light source, where photons come into existence out of nowhere, then there is no conservation of energy (energy is being created). But in a more realistic model where photons are emitted as a result of electron excitation, say, energy is conserved because the electron recoils when firing off the photon, so the extra observed energy of a blueshifted photon can be found in the extra kinetic energy of the electron as observed in that same frame of reference.

Re: A Slower Speed of Light

#56
post #13

Once you get all 100 orbs and you get close to the speed of light you're in for a treat. It gets rid of the funny color saturation effects and you only see the Lorentz transformation. I'd like to know the secret incantations to be able to modify the speed of light manually. (Once you walk fast as light, the game abruptly ends)

I think if you don't go under the white arch, you can stay indefinitely in Lorentz transformations mode. At least, I stayed that way for several seconds if I avoided that arch.

Re: A Slower Speed of Light

#57

It's _barely_ playable on my 2011 MBA. Seems like the limitation is on the CPU side though. Either it's fairly unoptimized, or this relativistic stuff is just really demanding. It's quite awesome anyways. Funnily if you change direction, that alone triggers no relativistic effects.

Oddly enough it runs great on my late 2010 MBA.

Re: A Slower Speed of Light

#58
post #14

The site seems to be suffering a bit. Here's the cache: http://webcache.googleusercontent.com/search?q=cache%3Ahttp%...

In case you're not able to download the mac version because the speeds are slow, here is a magnet link for it. magnet:?xt=urn:btih:1828bafc3135e0b326d31c5030003d7004a86433

Anyone got magnet for windows version? I got 15KB/s from the site

Re: A Slower Speed of Light

#59
post #39
post #35

Earlier quoted context omitted.

Since the speed of light doesn't change in real life, and there is no answer at what speed a changing speed of light would propagate in real life, does it really matter how it's implemented in this game? My guess is that they took the easiest route and made it change instantaneously for the whole world.

> does it really matter how it's implemented in this game? Yes, I imagine it would affect gameplay quite a bit.

The various visual effects seem to be render-time transforms, so I suspect the speed change is propagating instantly across the gameworld.

Can you think of a way to model a non-instantaneous propagation of this change that doesn't involve simulating oodles of photons wandering around the world?

Re: A Slower Speed of Light

#60
post #58
post #14

Earlier quoted context omitted.

In case you're not able to download the mac version because the speeds are slow, here is a magnet link for it. magnet:?xt=urn:btih:1828bafc3135e0b326d31c5030003d7004a86433

Anyone got magnet for windows version? I got 15KB/s from the site

magnet:?xt=urn:btih:1828BAFC3135E0B326D31C5030003D7004A86433 (windows)
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