Change A Value Based On Altitude

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#1

I’m working on a Realistic Re-Entry script. I need to add Air density from 1.225 on the ground to 0 in space. Space in my game is about 600,000 studs up. So how can I change the value of the air density as I get higher up? And if I go back down it changes again.

#3

You could probably make it more realistic using real physics, but you could just divide 1.225 by 600,000 and then decrease air density by that increment per stud.

local increment = 1.225/600,000

local density = 1.225 - (increment*height)

--e.g
local height = 400,000
density =  1.225 - (increment*height)

-- gives 0.408 as the air density.
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#4

Will try now, don’t have the knowledge to make realistic physics just yet. So ulness you want to exhaust hours helping me then I plan to in the future. Also the value always stays the same.

#5

I’m not sure what you mean. Could you explain how it stays the same?

For example, if you used it in this format:

local increment = 1.225/600000

function getDensity(height)
  if height > 600000 then
    return 0
  else
    return 1.225 - (increment*height)
  end
end

print(getDensity(400000))
#6

Not sure if I’m being stupid. Put this code in and slapped the print function in a while true loop. Value stays the same. Maybe I need to put the function in a while true? I need the value to constantly update. I added the script underneath a part. Is this a server script thing?

#7

Yeah the function won’t update by itself. It will need to be called each time you need a result. So as long as you have the height (y axis) of the object it will run fine.

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