[TW]Wilsonam is live on crosshairs now...

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HeyCarnut

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Presumably the tank barrels are designed with tolerances so it won't jam when it gets hot, so when it is warmer, the metal expands and there is a tighter fit between the shell and the barrel...
What? The bore size increases with heat in the barrel. The fit becomes looser, mutatis mutandis.
 

LemoN

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Generally, you're thinking in the wrong direction. v0 for firearms generally decreases with temperature.

Presumably the tank barrels are designed with tolerances so it won't jam when it gets hot, so when it is warmer, the metal expands and there is a tighter fit between the shell and the barrel which means more velocity since less explosive force is dissipated around the shell.

See Carnut's response.

And just to counter any guy who might jump in here and say "Well, but a tighter barrel means more fricton decreasing the v0" That isn't how it works.

Also higher temperature means gas is less dense, so it may be that when its colder there is more velocity since their is more air pressure per cubic CM pushing the shell down the barrel.

Or warm air thats in front of the shell in the barrel, is less dense, so there's less air resistance so the shell accelerates faster for the same amount of thrust.

This doesn't make any sense either, as this effect would be by far cancelled out by the slower burn-rate of the propellant and a similar effect on the propellant gasses.

I have no idea which if any of these ideas is right. I'm sure one of the tank obsessives will be along shortly to answer.

Seriously, this isn't a guess game. Either post if you know the answer or don't.
 
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LemoN

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Ok - we aren't worrying about the changes to the barrel due to temp - it is the temp of the round. I think lemon said it - as the ambient temp drops, so the mv of the round drops, as the propellant does indeed burn marginally slower...

Ok then, wouldn't it be more accurate that it depends on the ammunition temperature rather than the ambient temperature?

And if so, are you guys doing something similar for marksman rifles?

Would add some nice gameplay features, keep one round in the "warm spot". :p

"Quick Hans, give me your special round!"
"But I have to drop my trouser to do that!" :p

...Why exactly is Barakas getting these kind of responses? There is no law for posting when you aren't sure about something.

True, but guess what happens if 15 people start guessing...
 
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Zennousha

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Pretty close. It was my question that Alan was answering.

I asked: "The recent Gamespot article talked about tanks destroying a house piece by piece. Is procedural destruction in, or is this just the article getting it wrong?" ... or something to that effect.

The answer: YES you can destroy certain houses piece by piece, but won't be able to level all of them, either because they are too strong or for gameplay reasons.

The main reason I asked this is because I was under the impression that all destroyable houses/buildings would have a "destroyed" and "untouched" state with no gap in between. This is what we saw in those gameplay demos a few months back where John called an arty strike on a village and the houses went from being "perfect" to "destroyed."

It seems according to Wilson's answer that some buildings can be destroyed bit by bit, which really excites me.

Yes, it was also my assumption that there were simply two states to buildings after that Demo. I'm personally glad to see the Developers surprised me again and raised the bar on yet another game mechanic.
 

LemoN

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The funny thing is, few people here have played RO2. This is a forum from a game that's not even released. Everyone is guessing here, even you

To be perfectly clear, when I was asking my question I didn't want someone who has no clue about firearm physics jump in and post what he thinks "might" be the case, I was simply expecting either Alan to answer me (which he did) or somebody who knows what he's talking about explain it.

This feature is a direct implementation from RL physics, not some feature the dev's think fit but isn't based on RL. You can't discuss or explain this feature as you would do with any artificial thing such as crosshairs or freeaim, this is a scientific fact that can only be explained in one way. And since this isn't an unknown fact and has been researched a lot, guessing at it makes no sense at all.

Imagine you asking somebody what causes gravity, and all you get is people who have no clue of gravity presenting multiple guesses. This isn't exactly helpful, you know... It's more helpful if they simply say "I don't know, but I'd also be interested why this is the case".
 
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Hypno Toad

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Pretty close. It was my question that Alan was answering.

I asked: "The recent Gamespot article talked about tanks destroying a house piece by piece. Is procedural destruction in, or is this just the article getting it wrong?" ... or something to that effect.

The answer: YES you can destroy certain houses piece by piece, but won't be able to level all of them, either because they are too strong or for gameplay reasons.

The main reason I asked this is because I was under the impression that all destroyable houses/buildings would have a "destroyed" and "untouched" state with no gap in between. This is what we saw in those gameplay demos a few months back where John called an arty strike on a village and the houses went from being "perfect" to "destroyed."

It seems according to Wilson's answer that some buildings can be destroyed bit by bit, which really excites me.

I think ultimately it's up to the mapper, you may be able to make great use of those fractured meshes. I'd imagine there'd be some brick walls and things of that nature that tanks could drive or blast through. heck, if you had the time you could probably make a few completely destructible buildings.
 
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DiedTrying

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To be perfectly clear, when I was asking my question I didn't want someone who has no clue about firearm physics jump in and post what he thinks "might" be the case, I was simply expecting either Alan to answer me (which he did) or somebody who knows what he's talking about explain it.

This feature is a direct implementation from RL physics, not some feature the dev's think fit but isn't based on RL. You can't discuss or explain this feature as you would do with any artificial thing such as crosshairs or freeaim, this is a scientific fact that can only be explained in one way. And since this isn't an unknown fact and has been researched a lot, guessing at it makes no sense at all.

Imagine you asking somebody what causes gravity, and all you get is people who have no clue of gravity presenting multiple guesses. This isn't exactly helpful, you know... It's more helpful if they simply say "I don't know, but I'd also be interested why this is the case".

I wouldn't worry too much about 75% of the forum members on here as most probably haven't even finished high school yet.

You are completely justified, and I'd have to look sideways at anyone who thinks bashenka's arguments were either scientifically sound or even appropriate.

And for all you lurkers out there, why don't you actually engage your brain and post why you think bashenka is right/wrong instead of down-rating every post and running?
 

VariousNames

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To be perfectly clear, when I was asking my question I didn't want someone who has no clue about firearm physics jump in and post what he thinks "might" be the case, I was simply expecting either Alan to answer me (which he did) or somebody who knows what he's talking about explain it.

This feature is a direct implementation from RL physics, not some feature the dev's think fit but isn't based on RL. You can't discuss or explain this feature as you would do with any artificial thing such as crosshairs or freeaim, this is a scientific fact that can only be explained in one way. And since this isn't an unknown fact and has been researched a lot, guessing at it makes no sense at all.

Imagine you asking somebody what causes gravity, and all you get is people who have no clue of gravity presenting multiple guesses. This isn't exactly helpful, you know... It's more helpful if they simply say "I don't know, but I'd also be interested why this is the case".

Why are your posts getting rep-blammed?

TW agreed with you and aside from that I think what you're asking (don't preach if ignorant) is reasonable.
 
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DiedTrying

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The funny thing is, few people here have played RO2. This is a forum from a game that's not even released. Everyone is guessing here, even you

How is talk about scientific fact that occurs outside RO2 in the real world, dependent on who has played RO2??????:confused:

btw this thread looks like it's going to need to be locked I'm afraid.
 
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