Loop with delay inside a function?

Slavq · April 21, 2015, 11:15pm

How to add a delay inside FOR or FOREACH loop inside a function? It seems impossible (design limitation, can’t put Delay nodes inside function ) but how to achieve this in some workaround-way?
For example: Let’s say i want to, for each Bob to say “Hello”, wait 2 seconds and iterate this loop again, with another Bob saying “Hello”. Effect: Every Bob on my scene will say “Hello” with 2 seconds interval.
All this inside a ‘MakeAllBobsSayHello’ function How to achieve this?

anonymous_user_776011b61 · April 22, 2015, 11:13am

SO are you using a Loop or you just want it to loop?

Slavq · April 22, 2015, 11:26am

I’ve redesigned my question to be more specific, with an example So now the question is, how to make every Bob say ‘hello’ with 2 seconds delay inside a function?

anonymous_user_776011b61 · April 22, 2015, 11:38am

Use a custom event, not a function.

Slavq · April 22, 2015, 12:27pm

OK, i did it: First, use custom event instead a function, as @ suggested. But that doesn’t solve the problem, because foreach loop will not respect delay node and execute all Bobs at once. [HERE][1], in @ answer, there is an instruction how to modify for loop to respect Delay node. After modifying it this way, just setup it like this:

Now, all Bobs on scene will say Hello with interval specified in Delay node

Slavq · April 22, 2015, 12:28pm

Thanks for suggestion, that doesn’t solve the problem because of FOREACH loop not respecting Delay node, but i’ve posted a workaround. +1 for You ^^

atanknomore · January 21, 2016, 7:19pm

That is simple. Make a boolean which will determine if the function is supposed to be looping and on the outer node of delay, bring it back to For Each Loop.

Slavq · January 21, 2016, 7:26pm

This will still execute all array items (all foreach iterations) at once, because foreach loop doesn’t respect Delay nodes. I’ve already found a solution though (with use of modified ForEach), it’s in the answer

azennig · April 2, 2016, 7:56pm

This could be another approach:
(UE4.10) → Using “[Set timer by function name][1]” (link to the Unreal Docs).

Using this node, with the loop checked, and setting the for 2 seconds (from your question description) will produce similar effect that will solve the task (trigger a “hello” every two seconds).

https://docs.unrealengine.com/latest/INT/Gameplay/HowTo/UseTimers/Blueprints/index.html

Nebula_Games_Inc · April 8, 2018, 9:33pm

There is a way to nest the “delay” within the Macro itself which I find much simpler and cleaner. Everything I have seen on this has the delay outside the macro but here I show how you can actually modify the macro to “wait” before looping so everything is self-contained.