Game Development Exam > Game Development Videos > Build a Game: Unity Tutorial (Hindi) > Unity 3d Basics( Update and fixedUpdate difference) [04]
Unity 3d Basics( Update and fixedUpdate difference) [04] Video Lecture | Build a Game: Unity Tutorial (Hindi) - Game Development
FAQs on Unity 3d Basics( Update and fixedUpdate difference) [04] Video Lecture - Build a Game: Unity Tutorial (Hindi) - Game Development
| 1. What is the difference between Update and FixedUpdate in Unity 3D? |  |
Ans. In Unity 3D, the Update function is called once per frame and is used for regular updates and calculations that depend on the frame rate. On the other hand, the FixedUpdate function is also called once per frame but at fixed intervals, making it ideal for physics calculations that need to be consistent across different frame rates.
| 2. How often is the FixedUpdate function called in Unity 3D? | |
Ans. The FixedUpdate function is called at a fixed time interval, which is typically every 0.02 seconds (50 times per second) by default in Unity. However, this interval can be changed in the Time settings of the Unity editor.
| 3. Can I use Update instead of FixedUpdate for physics calculations in Unity 3D? | |
Ans. It is generally recommended to use FixedUpdate for physics calculations in Unity 3D. This is because FixedUpdate ensures that the physics calculations are consistent across different frame rates and avoids potential issues with variable frame rates. However, in certain scenarios where the physics calculations are not critical or time-dependent, using Update may still be acceptable.
| 4. Are there any performance differences between Update and FixedUpdate in Unity 3D? | |
Ans. Yes, there can be performance differences between Update and FixedUpdate in Unity 3D. Since Update is called once per frame, it has the potential to be called more frequently than FixedUpdate, which can lead to higher CPU usage. On the other hand, FixedUpdate is called at fixed intervals, making it more predictable and consistent in terms of performance.
| 5. Can I use both Update and FixedUpdate in the same script in Unity 3D? | |
Ans. Yes, it is common to use both Update and FixedUpdate in the same script in Unity 3D. Update is often used for general game logic and non-physics calculations, while FixedUpdate is used specifically for physics calculations. However, it is important to keep in mind the differences between the two functions and use them appropriately based on the requirements of your game.
Text Transcript from Video
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hum a unity kinder egg door functions
have update or fixed update to update
Gohan Burnaby discuss car chicken Archie
is video mayhem fixed update core
discuss colony or a difference taking a
key update or fixed update kinder clear
difference or cop humming update
cofunction use Kalmykia or come home a
fixed objective function use cambogia so
basically a update value function
healthy once per frame relevant ahem
means get up key frame rate will depend
ketaki get no frame rate goes up set up
called your update for function hello
run hunger so update your function here
j basically is may vary most time means
other a second me over 40 times run
homer to host attack issue K which
milliseconds major update the function
Zelda were running to J basically frame
independent attack other are people in
do graphics Hotel game can the most
adept
so other kisi frame can result a heavy
graphics m2 us frame execute cut them
with the other timely update or quick SE
frame of a disk and ER come objects and
scan the rendering command your objects
coming to vu frame you have the other
jelly execute wholly to schedule time
hit I have a fiction in your taqwa flame
Zelda Zelda say executor will quit holy
daily likely to occur up APNIC EC be
correct Turki when you for example
ka-lok a player have a bra grabs to
update can drop a gasket board looking
it to push me up Delana like bazookas
was faster algorithm go slow who got a
fast rogue appears longer to kill him
update the function use negative scary
huh music and fixed update the first
update basically in under will be your
physics i iteration of the him for
example just another egg player and you
have a rigid body hair player asperger
happening Muenster wanna to vom
fixed update candor Monster Magnet
actual scheme movement you
have constant care here to update candor
Hammond normally input keys with that
ugh God check dik-dik user never quickie
press key hellooo scale on ethnically
function Yaqui action perform cameto
home normally update key function can
the check at their graphics related
webicon
/ update can detectors active physics
related quick on home means the tractor
Cooper quill for supply Academy whole
scheme movement for change canal to walk
on home fixed update candor that they
have
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Sep 26, 2025
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