Can you tell me how I am being dumb?

Development Programming & Scripting
1

Hi,

So obviously I am being dumb and missing something here.

I have a datable with 2 items in, (as a test, there will be several more in the end) I transfer those items to an Array. (so that I can pick and sort the items I want) I have printed a string of the array length and there are 2 items in it. I then loop through that array with a for each loop and say Spawn Actor. ( have attached a print string to the loop and it says 0, 1 so only has 2 items in it)

So looking at that I should have spawned 2 actors, right!? However in another piece of code I use the function get all actors of class and ask it to spawn a widget to be added to a uniform grid. When the game loads there are 3 items in my array 3!!! and only 2 of them have the data from the data table…the other is an empty blank widget.

So what am I missing?..I am no doubt being dumb somewhere but I have printed strings and tested all my arrays, they only have 2 items so should only create 2 actors.

I did some further testing where I had 0 items in my array and it still created an actor, but still never gave it any data. So it seems like the “get all actors” function is returning a phantom creation.

I ran some another test where I didn’t do a for each loop and used a loop, and set the range from 1-2 trying to avoid the erroneous 0 spot in the array, however instead of the expected 2 items I got 1 blank item and 1 full. I then just did get point 2 in the array and it returned a blank item.

When I run the thing, in the world out line there are 3 actors…I just don’t understand where the third actor is coming from? I am using a “for each loop” on an array with 2 items in it. More bizarre than that though…it doesn’t complete the code…so I have 1 blank and 2 filled widgets…so it is creating an actor and then stopping without running the entire line of code…and then running through 2 times and creating the code correctly.

I have never seen anything like it and it is blowing my mind! I thought maybe I am creating an actor in another line of code somewhere…but that would not be creating a widget, so it wouldn’t appear on the screen.

My mind is boggled after looking at this 1 small thing for 2 days…help me internet, you are my only hope!

Thanks

2

first check you don’t have an instance in your map somewhere (took me hours to spot in mine as it was in a sub lvl).

Second I had a similar situation and had to put an is index = 0 if true do nothing on the for eachand then populate all arrays being used like that with 1blank entry

If the second works then there’s a issue with the data table referencing no.s

3

first check you don’t have an instance
in your map somewhere (took me hours
to spot in mine as it was in a sub
lvl)

This. Happened too many times. I remember counting widgets and forgetting about the ones created by widget components…

4

Lol yeah I had an old spawn system spawning 1 widget from a 0entity in a non visible sub lvl nearly broke me.

5

The only assumption I can make is that I am creating something somewhere…but I have looked through the the world outliner and there is nothing…I can’t see anything in my level it is at the moment only about 5 box brushes, as it is a test level.

I did a search on ALL blueprints looking for the “spawn actor” node and it only found the one I know about.

I probably am spawning it somewhere else like a fool, but I did something similar to you as a fix for the time being and just did an in int in range and started at 1 instead of 0. It solved the issue, but I now have a use for the get all actors node again…and keep skipping the 0 entry is tiresome.

I’ll keep searching! Thanks for your help.

6

perhaps when looping through all the actors of class print the display name of the actor, see if that clears anything up.

7

That suggested that your data entry line 1 is sitting as a 1 instead of a 0.

8

As a debug option … before you Loop spawn, get all actors of class → loop → destroy actor.

From there you know for fact there are zero actors of class in the level. If you still get the 3 actors later down the line you know the problem lies elsewhere.