Как сделать задержку в unity

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WaitForSeconds

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Description

Suspends the coroutine execution for the given amount of seconds using scaled time.

The real time suspended is equal to the given time divided by Time.timeScale. See WaitForSecondsRealtime if you wish to wait using unscaled time. WaitForSeconds can only be used with a yield statement in coroutines.

There are some factors which can mean the actual amount of time waited does not precisely match the amount of time specified:
1. Start waiting at the end of the current frame. If you start WaitForSeconds with duration ‘t’ in a long frame (for example, one which has a long operation which blocks the main thread such as some synchronous loading), the coroutine will return ‘t’ seconds after the end of the frame, not ‘t’ seconds after it was called.
2. Allow the coroutine to resume on the first frame after ‘t’ seconds has passed, not exactly after ‘t’ seconds has passed.

How to add time delay in Unity C#

So I’m trying to make a camera zoom in, but Thread.Sleep doesn’t work. Here is the code:

The error code is this:

2 Answers 2

You are getting this error message because you are missing a line that accesses the API for this. Simply add using System.Threading; at the top of your script. This will access the API for it. Or use a coroutine, which won’t freeze the entire game as a whole and is a much better alternative, as DMGregory suggested.

An important thing to understand about Unity is that the MonoBehaviour message methods like Start() and Update() are called on the main thread (ie. single-threaded). So if you stall one of them by hitting a long-running loop or sleeping the thread, you cause the entire game to hang.

So, if you want to add a delay, it needs to be by yield ing control back to the engine temporarily — so it can continue running other update functions, accepting input, rendering frames, etc. — until you are ready to resume your work.

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Как сделать задержку выполнения кода в Unity C#?

freeExec

не рекомендую делать WaitForSeconds в Update потому что по сути такой код будет начинать каждый тик (Update вызывается 60 вроде бы раз в секунду) новый интервал задержки, и сам Update может встать (или чтото еще в таком духе, надо тестить, вообщем баг явный)

на самом деле такой код может рабоатть, но только для быстрых корутин, не для ожидания 5 сек

аналогично из Start можно запускать корутину с ожиданием

лучше запустить корутину из Start() — пример же в доке есть