Technically, I don't think moving portals are the problem, but rather accelerating portals. The moon is moving but will accept a portal. A well stabilized moving surface should accept a portal, maybe the regular moving platforms have too much vibration.
Stupid moron doesn't remember the section in portal 2 destroying the neurotoxin generator
Technically, I don't think moving portals are the problem, but rather accelerating portals. The moon is moving but will accept a portal. A well stabilized moving surface should accept a portal, maybe the regular moving platforms have too much vibration.
2 weeks ago
Anonymous
it's just not an interesting thought experiment on its own but the unrelenting jank of the source engine is always a great time
see
I did a lot of portal mapping and testing portal interactions for this and learned two important things
>they did a good job making them behave naturally under normal circumstances
but >portals work in very, very strange ways under the hood and edge cases result in wacky shit or crahses
because of the way portals work under the hood, it's the object's energy that matters, not the movement of the portal. it's just not that sophisticated. the cube will just lazily poop out as per A even though B makes more physical sense.
i'll say it again as a summary so no one starts an argument with me on the wrong foot: B makes sense given what a normal player knows about portals and conservation of energy working through them. HOWEVER because of real world engine jankiness, A is what will actually happen if you had a hack to test it and didn't fundamentally change portal code.
[...]
the position/speed or a portal gun shot doesn't matter to the resultant portal, and portals can't move. in portal 2 i think there's maybe a couple puzzles with a moving portal but they're very heavily scripted
anyway you have normal conservation of energy through a portal and the portal's movement doesn't care: jumping off a high surface and shooting portals below you as you fall is a pretty commonly used mechanic/puzzle element
>be me >chell >no portals on moving walls >check wikipedia >earth and consequently all walls in the facility move at around 29.78km/s around the sun >cant put portals on walls >game over
>You'd be surprised the lengths people have gone through to prove B is correct.
Thats the meme retard, the answer is obviously A but we pretend is B to trigger newgays and autistimo gays
It's B for definite. Some autist is porting portal to the N64 and made a custom level with this scenario to test it. There's a video on youtube about it.
Well, at the point you write your own engine it could be A or B. As that guy says in his video, the portal engine itself doesn't support moving portals, so in portal proper it's neither.
Explain to me how technology that is basically just teleportation across two points in space can transfer momentum from itself to the object it is teleporting.
A hypothetical:
You are on a cliff. You place a portal on this ledge. The blue portal exists somewhere else, anywhere else. You jump down to the floor. In the very last possible moment you fire off an orange portal.
If position is relative, then this orange portal just traveled from the top to the bottom of this cliff instantly. Or at least the equivalent of this.
You are sent flying at a near infinite speed out the blue portal as a result.
Where does this example deviate from the attached image, such that "B" would make sense in this context?
It doesn't need to happen. The point is that, if position is entirely relative, then placing a new orange portal is the equivalent of that portal moving to a new location instantly.
And if it can do the equivalent of moving to a new location instantly, then it can fling something at infinite speed by B's logic.
I did a lot of portal mapping and testing portal interactions for this and learned two important things
>they did a good job making them behave naturally under normal circumstances
but >portals work in very, very strange ways under the hood and edge cases result in wacky shit or crahses
because of the way portals work under the hood, it's the object's energy that matters, not the movement of the portal. it's just not that sophisticated. the cube will just lazily poop out as per A even though B makes more physical sense.
i'll say it again as a summary so no one starts an argument with me on the wrong foot: B makes sense given what a normal player knows about portals and conservation of energy working through them. HOWEVER because of real world engine jankiness, A is what will actually happen if you had a hack to test it and didn't fundamentally change portal code.
https://i.imgur.com/z41HnS8.png
Explain.
the position/speed or a portal gun shot doesn't matter to the resultant portal, and portals can't move. in portal 2 i think there's maybe a couple puzzles with a moving portal but they're very heavily scripted
anyway you have normal conservation of energy through a portal and the portal's movement doesn't care: jumping off a high surface and shooting portals below you as you fall is a pretty commonly used mechanic/puzzle element
A) the portal moving into the object applies no force. It's as if you're standing still and someone moves a door threshold towards you and it simply passes around you vs you stepping through it. The portal imparts no force to the objects passing through.
See as it's basically the same as what I'm trying to describe.
If you were next to the blue portal, and you looked through it, you'll see a cube moving at high speed directly towards your position. Say that you totally believe that the right solution is A, but you'll step aside just in case anyway.
Portals aren't allowed on moving walls
Stupid moron doesn't remember the section in portal 2 destroying the neurotoxin generator
Fordward moving walls*
Portal dissapear.
Sideways/up/down moving walls are ok.
Technically, I don't think moving portals are the problem, but rather accelerating portals. The moon is moving but will accept a portal. A well stabilized moving surface should accept a portal, maybe the regular moving platforms have too much vibration.
chell exists in the source engine where the moon is a static image that only moves in screen space but not real position
Nobody cares about what the game engine actually does.
then it's a bullshit question and honestly a lot less interesting for a BOT thread
portal threads are always like this
it's just not an interesting thought experiment on its own but the unrelenting jank of the source engine is always a great time
see
>The moon is moving
everything is moving
>be me
>chell
>no portals on moving walls
>check wikipedia
>earth and consequently all walls in the facility move at around 29.78km/s around the sun
>cant put portals on walls
>game over
A.
The object passing through the moving portal is on a state of inertia
Not after it passes on the other side of it.
Position is relative
>Position is relative
So is velocity
I can't believe this shitty image is still alive and kicking in 2023
You'd be surprised the lengths people have gone through to prove B is correct.
the writer of this site is such a pseud gay i wouldnt trust a single fucking word written by that grifter even if it's 100% factually correct
>gay
that is not who i thought it was. disregard that post i am the pseud gay
That would imply that A wouldn't pass through it at all because apparently B is impossible because any force applied has no effect.
can't blame them, you could write a degree piece in theoretical physics by exploring the differences
>You'd be surprised the lengths people have gone through to prove B is correct.
Thats the meme retard, the answer is obviously A but we pretend is B to trigger newgays and autistimo gays
B is correct though.
Someone make a fucking trolley problem out of this
It's B for definite. Some autist is porting portal to the N64 and made a custom level with this scenario to test it. There's a video on youtube about it.
>I wrote my own custom physics rules to yield the exact result that follows from my custom rules
What a waste of time
Well, at the point you write your own engine it could be A or B. As that guy says in his video, the portal engine itself doesn't support moving portals, so in portal proper it's neither.
Even if you could do the experiment in portal 2, that's not the point. The point is what it should be, allowing for the most realistic laws of physics
Portals don't exist in real life, so that paper isn't realistic physics either. Anyhow, the consensus is the rules that we have described all say B.
it's gonna be b, no need to ask: the platform will push it through the portal at the exact speed of the piston
Explain to me how technology that is basically just teleportation across two points in space can transfer momentum from itself to the object it is teleporting.
A hypothetical:
You are on a cliff. You place a portal on this ledge. The blue portal exists somewhere else, anywhere else. You jump down to the floor. In the very last possible moment you fire off an orange portal.
If position is relative, then this orange portal just traveled from the top to the bottom of this cliff instantly. Or at least the equivalent of this.
You are sent flying at a near infinite speed out the blue portal as a result.
Where does this example deviate from the attached image, such that "B" would make sense in this context?
do you mean energy, perhaps, my good A-tard? because momentum is a vector which is changed by portals in every level in the game
Explain.
The portals are 2d. That couldn't happen
It doesn't need to happen. The point is that, if position is entirely relative, then placing a new orange portal is the equivalent of that portal moving to a new location instantly.
And if it can do the equivalent of moving to a new location instantly, then it can fling something at infinite speed by B's logic.
I did a lot of portal mapping and testing portal interactions for this and learned two important things
>they did a good job making them behave naturally under normal circumstances
but
>portals work in very, very strange ways under the hood and edge cases result in wacky shit or crahses
because of the way portals work under the hood, it's the object's energy that matters, not the movement of the portal. it's just not that sophisticated. the cube will just lazily poop out as per A even though B makes more physical sense.
i'll say it again as a summary so no one starts an argument with me on the wrong foot: B makes sense given what a normal player knows about portals and conservation of energy working through them. HOWEVER because of real world engine jankiness, A is what will actually happen if you had a hack to test it and didn't fundamentally change portal code.
the position/speed or a portal gun shot doesn't matter to the resultant portal, and portals can't move. in portal 2 i think there's maybe a couple puzzles with a moving portal but they're very heavily scripted
anyway you have normal conservation of energy through a portal and the portal's movement doesn't care: jumping off a high surface and shooting portals below you as you fall is a pretty commonly used mechanic/puzzle element
A ffs
portals don't exist bro. it's an artificial problem.
It depends on whether you believe that the velocity of the portal itself is added to the object or not.
post more portal troll physics
I'll make a portal 2 map pack based on testing them out under stock physics/mechanics
go back to your pornographic videogame mod circlejerk containment board you stupid pornspamming subhuman coomer chud gay
B, because B allows more interesting gameplay opportunities.
>But but muh inertia
Portals are from a game and gameplay is king
A
This has both portals moving though, which would agree with B's interpretation
t. lowiq
A) the portal moving into the object applies no force. It's as if you're standing still and someone moves a door threshold towards you and it simply passes around you vs you stepping through it. The portal imparts no force to the objects passing through.
See as it's basically the same as what I'm trying to describe.
what if you move a portal inside another portal
If it was A then the cube would fall back through the portal and crash the universe
If you were next to the blue portal, and you looked through it, you'll see a cube moving at high speed directly towards your position. Say that you totally believe that the right solution is A, but you'll step aside just in case anyway.
I refuse to believe anyone who says B is anything but a troll.
the answer is literally not A or B