Questions tagged [coroutines]

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11 views

Coroutine problem, I don't know what's happening [duplicate]

Calling function. ...
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1answer
27 views

How to call StartCourotine in abstract class?

Bellow is my code. I have an abstract class and a inheriting class. This keeps giving me an NullReferenceException, on the ...
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0answers
15 views

FixedUpdate or Subroutine

So Update is called every frame while FixedUpdate is called on Physics time, which can be modified. Is it better to depend on FixedUpdate to have optimized game loop so that everything doesn't get ...
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0answers
12 views

Unity C# calling callback function inside coroutine

I want to have a callback function for when the UI needs to be disabled. Mainly because I want to let their own scripts have their own condition on when it becomes true. Hence, I made something like ...
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1answer
26 views

Unity both duration and cooldown system

I have a boss with machine gun and i am trying to make him shoot for 5 seconds and then stop for 5 seconds and so on. I tried to create an IEnumerator and call it on Start (as far as i know i can not ...
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1answer
25 views

How to start a coroutine that will finish after the object is destroyed

I have a simple game in which the player can collect power-ups. Each power-up gives the player a temporary advantage for several seconds. The power-up should disappear immediately after the player ...
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1answer
42 views

How to batch coroutines (IEnumerators) in parallel

We are working in a context where multithreading is not an option, so we're using coroutines to handle our loads. Often there are multiple things that need to be downloaded, leading to a pattern like ...
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1answer
25 views

Unity Can't adjust firing rate

I need to be able to control the speed in which the gun fires. I'm trying to use the couroutine to limit the speed of update method but it doesn't work for some reason. I've tried several fireRate ...
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1answer
110 views

How to restart a coroutine

I want to run my code multiple times without using the Update() method, now, I could use a coroutine or an Invoke(), but since the Invoke() is not very performance friendly as a coroutine, my best ...
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3answers
147 views

Why does my recursive coroutine freeze Unity?

I want the bounds (left wall and right wall) to follow the player's y position, a couple of times. However when I use this code, Unity freezez as soon as it runs, and I have to manually shut it down. ...
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1answer
61 views

Coroutine only partially executing

I have a Coroutine that I use to pull and spawn an enemy in my game. This coroutine works perfectly fine, with the exception of the very first call. I am fairly certain this is because I am probably ...
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1answer
180 views

How to make progress bar in EditorWindow with Threading in Unity?

I need to make a progress bar in EditorWindow. To do this, I perform the function of calculations in threads: Thread thread = new Thread (_worker.Work); thread.Start (); The class itself emitting ...
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1answer
64 views

Unity, WaitUntil in a self-made message box class

I managed to make a simple message box prefab with a Text and a Button through Canvas, and ...
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6answers
4k views

Why am I not getting stuck in the loop

I'm new to Unity. I was learning coroutines and I wrote this. ...
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2answers
234 views

Is coroutine as good as a delay() function [closed]

I'm new to Unity and I was learning the usage of coroutines. Is calling a coroutine as good as a delay() function? Does Unity have a delay() function?
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1answer
33 views

Bullet prefab gets stuck to target after hitting

As the title says, I am having an issue with prefabs: I am trying to make a bullet follow a curve and then hit a target using this method: ...
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1answer
52 views

Coroutine does not resume after WaitForSeconds

None of the code after wait for seconds runs in the example below. The idea is to stop the player attacking for 1 second after he hits an enemy. When I run this code, ...
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1answer
36 views

How can I use a coroutine and GetAxis to rotate a game object?

For the sake of learning about coroutine, I want to convert the following to a cleaner Update that just calls a coroutine. How would I do that? ...
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1answer
44 views

Coroutine constantly updating animator transition

I have a problem for a while now and I am running out of ideas: I have a made a coroutine used to implement animations in the attacks, something like this ...
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1answer
259 views

Why is my coroutines not working with in the if statement?

Isn't it possible to start co-routines under certain conditions? Or, it should only be started at the initial steps only? There is an enemy which will be de-activated after certain condition which ...
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0answers
47 views

Starting Couroutine in newly activated gameObject

I'm working on a UI system that animates an element's properties using coroutines. Every element that should be animated has a component called AnimatedUIElement ...
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0answers
73 views

Is a final yield return 0 required in corutines?

I have the following code run in a coroutine. I would like to know if the last yield return 0 is necessary and why. Thank you! ...
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1answer
70 views

Inflating a balloon while the user touches & holds the screen

I'm trying to create a simple balloon which will enlarge as the user touches and holds the screen. So I wrote something like this: ...
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1answer
111 views

Why even use coroutines in Unity?

I have been thinking about the use of Unity's coroutines recently, and while I've used them in the past, and am already aware of their bad reputation (although I've also seen posts on the unity forums ...
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2answers
695 views

Display loading screen after scene change but wait for coroutine to finish

I thought I'd understood how coroutines work but I'm still experiencing problems getting them to run when I want them to run: There are two scenes in my game: The main menu one and a game one. The ...
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1answer
509 views

Unity: Loading screen without a coroutine (is it possible?)

I need to accomplish something specific but I'm not sure how to do it exactly: My game has 2 scenes: The main menu that has a couple of buttons... ... and the game scene that displays a different ...
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1answer
470 views

How can I make a coroutine run for a specific number of times in Unity?

I use coroutines in unity, with while(true) condition, which runs it indefinitely. I need to make the coroutine run for a specific number of times, let's say 10 times. Any pointers will be much ...
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1answer
69 views

Help understanding IEnumerator Move routine

I have this code and I know what it does (it will move an object up and down) But I don't know how its elements work. Could someone please explain it to me? ...
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1answer
2k views

How to create loading bar for asset bundles on Unity (without changing scene)?

So from the official documentation and unity forum now I know that there's async version of LoadFromFile (that I also will probably call ...
19
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1answer
4k views

What is wrong with my Respawn coroutine?

I am creating a 2D Platformer game in which if the player falls off the base/ground then I want the player to respawn at the nearest checkpoint. However I want there to be a delay between the player ...
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1answer
393 views

How can I optimize coroutines?

I have a script which has a Queue datastructure (code below). This queue holds more than 100 Actions. So currently my script does a yield return null after every ...
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1answer
401 views

Return value from coroutine to non monobehaviour

I have a class which is not a monobehaviour (lets call it "Generation"), and as such running CoRoutines from within are not an option. I have a monobehaviour (lets call this "TestScript") which needs ...
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0answers
44 views

Sequencing method calls with time delay

I'm trying to solve what seems to be (or should be) a very simple problem. I'd like to sequence several steps in a GameManager class with some time delay between them. In my case, I'd like to clear ...
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1answer
171 views

In Unity, how do I use the extra time in every frame to do some extra processing?

Let's say, for example, that my target framerate is 60 frames per second. Now, I know that I have a maximum of 16.6 milliseconds to "do everything" every frame in order to maintain that framerate. ...
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1answer
933 views

Recursive Unity Coroutine

I have a co-routine which is heavily reliant on calling itself to get the task done. I have tested it and the code works fine, the problem is that the co-routine will return every time that it enters ...
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1answer
2k views

How to start a Coroutine in another script?

I did some research about this but what i found was kinda confusing so I didn't actually understand it. Basically I have a coroutine that displays an image after 5 seconds, but I want that image to ...
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1answer
425 views

Coroutine doesn't work

I've been trying to make this work for days and I can't figure it out. I have a code, attached to an enemy prefab, that should display an image a couple seconds after an enemy spawns (this is to show ...
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2answers
1k views

Coroutine not working (Unity)

I made this code because I needed an image to display a couple seconds after an enemy spawns, but for some reason I can't make it work. There's no error in the console, but it doesn't display the ...
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1answer
5k views

Unity: How to resize a game object for a certain amount of time?

I've tried to make a coroutine like this ...
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1answer
190 views

How can I switch between starting a coroutine vs running the routine all at once?

I'm generating a level, and I have an optional delay to show the steps level generation one by one. If my generationDelay boolean is true, I want to use ...
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1answer
2k views

How to await player input using Coroutines

How can I accept player input using Coroutines, pausing execution of Unity while the player has not yet provided input? It seems like a simple problem, but I can't seem to figure it out. Here is my ...
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0answers
523 views

Get random point on NavMesh async

I am trying to spawn some entities on a navmesh at runtime. The entities need to spawn at a random point. Right now i use the following to get a random point: ...
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1answer
230 views

Using a Coroutine in a character move left/right situation for a random amount of time

So what I am trying to do is have an AI character make decisions based on 3 zones, far distance, mid distance, or close range (not yet to close range). So far, the logic is set up so the character if ...
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0answers
288 views

Difference between a normal function and coroutine without yeilding anything

I just came across a coroutine in my project, which does few calculation, which could have been done using normal function.There is no loop in that coroutine and contains ...
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1answer
4k views

How do I use coroutines to animate properly?

I have a coroutine, which I called from the Update() method on every click. First, I call AddTrunk() to add to my ...
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1answer
23 views

IEnumerator Loop not Drawing Changes to Transform.position

So, I'm working on an IEnumerator() that is called to spawn objects in a fountain style (kinda flying up and out and landing at a random spot nearby). I feel like I had this working for a hot minute, ...
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0answers
453 views

How do I correctly unload an additive Scene in WebGL?

I am creating an app in WebGL. I have a loading scene that I am loading additively: SceneManager.LoadScene("Loading Scene", LoadSceneMode.Additive); It loads ...
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1answer
69 views

GameObject that should have a fixed speed keeps accelerating

I'm using a coroutine to make a GameObject move from a random point A to a random point B. The GameObject should move along this trajectory at fixed intervals and at a constant speed. However, each ...
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3answers
3k views

On button click wait

I have a button I got from google material design asset pack which has a ripple animation when pressed. I'm using the button's click option in the inspector that calls a method that switches scenes. ...
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1answer
3k views

NullReferenceException in StartCoroutine method

Maybe it's a repeated subject in the community but other answers didn't solved my question... I tried as the tutorial: http://answers.unity3d.com/questions/11021/how-can-i-send-and-receive-data-to-...