Add Delay Function

[Hrishikesh_Salokhe]

Hi, I am currently working on developing on a game on which I am working since long time. I know and I can create a delay using clock but can you Devs please import a new function in control
as delay and a number box attachable to it. So we can create a delay between two procedures or function.Please look ahead for this.

[sarkar]

@Hrishikesh_Salokhe You can use the GetMillis procedure in clock. You can make two varibles, one for current milliseconds timestamp say currentMillis and another to compare the current Millis previousMillis. Once the comparison is done, update the variable previousMillis with the value of currentMillis. In this way, you can set delay of certain milliseconds.

[TIMAI2]

@sarkar

In this way, you can set delay

Not sure that is great advice @sarkar. You should set any delay with a clock timer.

Can anyone explain to me why my delay procedure isn't working?

I need a “delay function” for an app I’m working on and I created these blocks to test out but it doesn’t seem to work as I’m expecting. I have a single button and what I’m trying to do is that when the button is clicked, it changes colour to BLUE then 1 second later it changes to RED and finally 1 second later it changes back to GREY. However, when I click the button it temporarily changes to a kind of yellow and then back to grey an when I click the button a second time (or third, or fourth)…

[ABG]

You can do lots with a Clock.

See this example for juggling three things simultaneously using a single clock.
https://groups.google.com/forum/#!msg/mitappinventortest/BOj2-ThEe3s/VlmXdcVOAgAJ

[sarkar]

@TIMAI2

You should set any delay with a clock timer.

Yes, the method uses a clock timer.

This method is regularly used in embedded system codes, where you have a single hardware timer. Using a complete delay (aka pause), it halts the whole program. On the other hand, by creating routines for comparing milliseconds, you can set variable delays. Even in the above case, if the delays require a sync, then using millis comparison would be helpful.

[Taifun]

@sarkar

In this way, you can set delay of certain milliseconds.

@sarkar @Hrishikesh_Salokhe
Why is a wait procedure generally a bad idea?
The model of event processing in App Inventor by @Franklyn_A_Turbak
Please Wait method byScott

Taifun

---

Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.

[sarkar]

Woah! Thanks @Taifun. Yep, @TIMAI2 you were right.
There’s no guarantee the delay would work as expected in the method, and unlike embedded system, app is not running on a real-time system.

[Sunny_Leung]

This might be the simplest implementation if you don't mind adding clocks, be reminded to un-check TimerAlwaysFires and TimerEnabled

Effectively a for loop with iteration 5, while loop is similar.

[guru_brahmayya]

Thanks. its working great.

[kaushik]

hii also have the same doubt i want to make a label visible an invisible few times

[TIMAI2]

Please see here:

Add Delay Function

@sarkar @Hrishikesh_Salokhe Why is a wait procedure generally a bad idea? The model of event processing in App Inventor by @Franklyn_A_Turbak Please Wait method byScott Taifun Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by [image] Taifun.

[DavidL_Dewey]

Call from wherever you want...

[TIMAI2]

@DavidL_Dewey

Call from wherever you want

Please read above (posts/links) with regard to event processing. You cannot rely on this method.

[Taifun]

as already said earlier

@Taifun

Why is a wait procedure generally a bad idea?
The model of event processing in App Inventor by @Franklyn_A_Turbak
Please Wait method byScott

therefore the correct wait method is this (by Scott)

Taifun
PS: I will close this thread, everything already has been said...