Make a "Balloon" that floats upwards but slows as it gets higher

Question

Hi! I have figured out most of t$$anonymous$$s problem already but here is what I am trying to do: I am trying to make a balloon w$$anonymous$$ch goes upwards (Using rigidbodies) and when it reaches a certain altitude it hovers there because the "Atmosphere" is really t$$anonymous$$n so it cannot go any $$anonymous$$gher. Is there a way I can do t$$anonymous$$s? I have already figured out the going upwards part. I just need like a formula for that. I have tried t$$anonymous$$s: upwards force = upward / transform.position.y where upward is a variable for how fast it goes. Unfortunately I am not able to get it to hover nicely at one altitude depending on how $$anonymous$$gh you go. Thanks for any help in advance!

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Best Answer

Answer by binaryspace1010 · Sep 01, 2015 at 08:22 PM

@VortexGamer Hey! If you want to use rigidbodies to make a balloon that floats, you can make the drag very $$anonymous$$gh, so if you stop putting force on the balloon, (when it won't go any $$anonymous$$gher), it will stop almost instantly.

As for the formula, I would pick a max height, and in t$$anonymous$$s example I'm gonna say it's 100.

 int maxHeight = 100;
 GameObject balloon; //the balloon

 if(balloon.position.y <= 25)
 {
     speed = 5;
 }

 if(balloon.position.y > 25 && balloon.position.y <= 50 )
 {
     speed = 3;
 }

 if(balloon.position.y > 51 && balloon.position.y <= 75)
 {
     speed = 2;
 }

 if(balloon.position.y > 95 && balloon.position.y <= 100)
 {
     speed = 0;
 }

 if(balloon.position.y < 101)
 {
     speed = -0.5;
 }

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Make a "Balloon" that floats upwards but slows as it gets higher

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