Bronto GamesDec 15, 2022
Sander Vanhove

Quick tip: Want to delete elements while iterating over an array? Go backward, start from the last element and work to the front.

If you go forwards, you'll:
❌Skip elements
❌Go out of bounds at the end

Not #GodotEngine specific, but implemented in Godot.
#indiedev #gamedev

Dec 14, 2022 at 4:55pmWeb
Show threaddopey (they/them)Dec 14, 2022

@SanderVanhove nice tip! I've never considered this approach. Probably because a lot of languages I've used have functions for filtering arrays anyway. I believe GDScript 2 is also getting a filter feature.

Still a great tip though!

Show threadSander VanhoveDec 14, 2022
@dopey_kun thanks! Yeah very true! Filters will make it way easier to do something like this. Although sometimes you want to do more than just delete them, so I still see some use in this 😁
Show threadegorDec 14, 2022

@SanderVanhove oh my god thank you so much!! i was just thinking on how to handle this

such nice illustration as well

Show threadegorDec 14, 2022
@SanderVanhove also in vscode there is a quick Action to reverse for loops
Show threadSander VanhoveDec 14, 2022
@egordorogov no problem, glad I could help out 🤗 Also that is awesome of VSC, it's a great editor!
Show threadfrankiezafeDec 14, 2022
@SanderVanhove i always create a "zombie" array containing the ids of the element to delete, on wich i loop backwards... your solutin should be more efficient, but it woukd be cool to measure the performance boost
Show threadSander VanhoveDec 14, 2022
@frankiezafe also a valid solution! I imagine that the performance increase will be very dependent on how many elements are to be removed.
Show threadNicole Marie TDec 15, 2022
@SanderVanhove nice work!
Show threadBronto GamesDec 15, 2022
@SanderVanhove your use of visuals to explain these tips is really helpful!
Show threadSander VanhoveDec 15, 2022
@bronto_games thank you Bronto! I'm going to try to do this more often 🤗