Thrusters/dampers shouldn't work like this

Dume shared this feedback 20 days ago
Not Enough Votes

So this is pretty simple, no matter the mass of your ship. If you only have one little tiny thruster pushing down, your ship will only go down or fall (even though your lift thrusters go to zero) as fast as that one thruster can push you as if there were no gravity.


Worse then this, if you have no down facing thrust and enough thrust to keep your mass afloat, you can get to space with just a tap of space bar. Gravity has zero affect on a ships mass if they have no thrust pointing in the direction of movement. (using purely atmo thrusters the ship will start to slow down a 0.85g-0.80g, however you can easily use speed to cover come it or use hydrogen.) Once you reach space, use Gryo to roll over 180 degrees to slow down and re weld those top thrusters and then you're off as good as gold.


Lastly, as long as you have enough thrust down to keep your self afloat, you can push yourself to space using your gyro and a lever without actually even hitting space bar and you will float into space.


https://www.youtube.com/watch?v=VHyhqhhlHPg


https://www.youtube.com/watch?v=ZIZ0PaVYh5k


Both videos are unlisted but otherwise publicly viable with the link.

Replies (7)

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3

It's handy to have a safety speed for descending to make landings a bit more predictable but indeed the current approach is a bit too fudged and adds to the feeling of the survival aspect being too easy. We should have to be a bit gentle on the controls or risk crashing, that's fun. Likewise you shouldn't be able to drift to space, though that's essentially just a bug at this point.

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9

I understand why it would feel good having that buffer, however going this route is the wrong way as it removes any of the risk associated with doing something dumb and over loading your craft. As it stands it doesn't matter anyway as you can smash into the ground at 72km/h and do zero damage as it is so who cares? just fly into your base, turn dampers off and drop it on the deck from a few meters high, it doesn't matter.


As a counter and to be reasonable, fixing this super damper and no down movement without thrust could be done by instead. When in a planetary gravity field, when you hit your down key, instead of it setting all down thrust to zero and dropping you like a rock, pressing C instead ramps thrust down over a second or two allowing the ship to drop slower as the thrusters ramp their power down instead of instantly turning off and dropping you like a rock. It would allow for a much more controlled descent.


It could also be done in a way where it checks the grid to see if there are "down" thrusters, if a ship has down or opposing direction thrusters then when you hit C it disables down thrust and fires the up thrust. This allows for all grids, atmo, hydro and ion to all function the same in space where you would want those thrusters to fire and work when you press the button and not have to fight a slow ramping opposing direction thrust. However, if a grid has no up or opposing facing thrusters, then it can then use a different thrust ramp profile that pressing C instead lowers the power of the dampers in the direction of the key press.

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Yep, I'm personally on board with your suggestion. Slightly ramped thrust vectoring for 'down' or toward gravity. Either that or simply not having the super dampning at all.

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1

I've seen some strange thruster behaviour on this game... Perhaps it should be logged as a bug?

1. When turning off reverse thrusters, the forward thrusters suddenly start firing on their own, without applying any thrust - basically just the sound and visual effects.

2. When in atmosphere with a hydrogen ship, pressing space-bar makes you go up, as normal, but then switching off inertia dampeners, the ship slows down and eventually starts falling, even with holding space-bar in

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5

#1 sounds like a bug, correct.


#2 no that is as intended, this is the "Super Dampers" in question everyone is complaining about. Ships have a huge amount more thrust available to them when dampers are turned on, if you turn your dampers off and use the flight controls that is actually the thrust you the player have access too. However with Dampers turn on, the game buffs their power (or does funky things with ship weight) letting the thrusters have much more power to slow yourself down.


You'll also notice if you are trying to slow down flying in a straight line, you will slow down faster if you let go of your keys and let the super dampers slow you down, if you try and hold S to slow down you'll be inputting the power available to the player and not using the super magical powers of the dampers that Keen gave the system.


I like to point out to people, if you do the start of the survival campaign. if you take the Grasshopper ship up to the mining camp and ice platform and turn the dampers off, the ship is incapable of taking off without the additional help of the broken super dampers. They have designed the Grasshopper and starting scenario around the physics of the super dampers.

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2

So they need to actually add a bit more thrust to the blocks and remove the silly "Super Dampers"

Maybe if they consider aerodynamic physics as part of the game in the future, they might rework the thrust system.


For now, it's a little bit annoying having to use dampers all the time, but not a deal breaker just yet

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4

The options are really, increase thrust available to the player to match damper power. This would mean less thrusters needed for a craft meaning you could design stuff more and not just have to slap thrusters "everywhere" to stay afloat. (However gravity should still affect ships that don't have up facing thrusters, if you disable all down pointing thrusters your ship should fall out of the sky)


Or, decrease thrust to dampers to match player thrust input, reverse of the above in consequence.


Regardless the flying physics are borked and I'm seeing it brought up more and more. Aerodynamics I understand why keen never will, to do it properly you would need to completely rework SE physics again and Space Engineers would loose some of the simple physics it has, thrust would have to affect grids based on where thrusters are placed not just always apply thrust to centre of mass like they do now and it would break every single ship in Space engineers and require a complete Ideological change to the way ships are built and how thrust works. It's better keen wipes their hands of it and lets a modder "tack" it onto the side of their game.

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I'll add this here to note as I didn't think to play around with the player jetpack, but if you haven't notice.


When on a planet, if you turn your jetpack dampers off, you cannot gain altitude. No matter how long you hold space, with dampers turned off you will not go any higher. Turn dampers on and no problem, can jetpack yourself out to space at 72km/h using zero jetpack fuel.

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4

It's not just "super dampeners". I've tested this and found that there is a strong universal bias towards any thrust that opposes your current movement vector (simply manually firing your retro thrusters with dampening turned off). It's a very weird effect. I think this takes away from the engineering aspect of Space Engineers if we can get away with careless ship design and maneuvering.

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Personally I hope there's a perfect happy medium where we can design ships for looks without having to massively compensate every direction for thrust. But if I had to give that up to have a good and realistic flight model I absolutely would because right now it just doesn't make sense.

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2

Sort of relevant, I noticed that using C to thrust down to descend your ship is less efficient than turning off dampeners and letting gravity do the work. Your ship should fall faster when thrusting down than with just gravity alone because of the extra thrust but for some reason it's the opposite.

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4

That's the main complaint besides the flight model sucking because of it. When you hit C to thrust down, the physics don't account for gravity pulling the ship down while in atmosphere. However when you turn dampers off, suddenly it adds gravity into the mix and you drop like a rock, usually not even having enough thrust to maintain the same height.

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Yes, I think problem is if you don't have down thrust, (which is considered not nesessary in gravity) if you push 'c', your up thrust should be off to make you possible to go down, like it worked in SE1, but here it seems that up thrust only off, if you have some down thrusters activated.


Idea of Super dumpeners are cool, in my opinion. Now you don't need to add a lot of thrust in front of the ship - more thruster you need only on back side - and this makes ships look cooler.

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You're close Artem, if you press C to go down then you will only go down as fast as that one thruster can push your mass. If you had a 200,000t ship with a single small atmo thruster it would probably take three years to descend more then a few meters. It means on atmo ships you have to slather the top in thrusters to get it to go down.

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Yes, I agree. This flying model should be changed

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Just want to add this quote from the Keen Software House website. It would be nice to see Keen publicly address the flight model and if they are intention to improve it as so far from what I can tell it's been radio silence.


Keen Software House

"Independent game development studio aiming to create games that are based on real science, real facts, real physics and real emotions."

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LOL. talk about empty promises.

Fortunately there is already a mod that removes super dampeners, I'll have to retest its various effects, but in general it seems to address the concerns here.

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It's nice to give a reminder and with that mod, I'm not sure of its the same one however it doesn't do anything to fix any concerns in this feedback, maybe it broke but I'll check again. Would be nice to get thrusters working properly but this'll be core engine flight model problems.

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The physics system clearly needs refinement for a more authentic experience.

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Yes, I’ve noticed this bug as well. It’s quite frustrating because it breaks the physics logic and ruins the immersion in the game. I also wrote about this issue and attached a video to demonstrate the problem. This issue really affects the overall experience and makes the gameplay less enjoyable.

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