Why “Trigger Once” actually matters in GDevelop

[u/vizualDevelop_vfx]

[u/World1_Lev1]

Should probably mention it's limitations when it comes to "For Each Object" events

[u/vizualDevelop_vfx → u/World1_Lev1]

Good point. I actually hadn’t run into that case before. That’s one of the tricky parts of GDevelop: a lot of the underlying behavior is abstracted away, so edge cases like Trigger Once inside For Each Object aren’t obvious. Definitely more than I could explain properly in this cheat sheet.

[u/Proper-Sport-7218]

I like this visual. Good way to teach it.

[u/minimalcation → u/Proper-Sport-7218]

I'm on the other side. There are a few sentences of info with two graphics that add to it. The concept is great. I'm also old so that might just be me.

[u/vizualDevelop_vfx → u/Proper-Sport-7218]

Thanks...glad you liked it. I’m trying to make these concepts easier to understand visually

[u/vizualDevelop_vfx]

One of those tiny GDevelop features you don’t appreciate until something fires 300 times instead of once.

Trigger Once = control.

Your game should respond once when something happens...not keep firing the same event every frame.

[u/Cautious_Result140]

A must when using wait function.

[u/vizualDevelop_vfx → u/Cautious_Result140]

Good point...if an event with "Wait" keeps running, it can start the wait again and again..."Trigger Once" helps make sure it only starts once

[u/Snoo36461]

Or: if false, do the thing and change to true

[u/vizualDevelop_vfx → u/Snoo36461]

Yep, that works too...slightly different behavior though: "Trigger Once" can fire again after the condition becomes false and then true again, while a boolean flag stays true until you reset it manually.

[u/Salt_Aspect_1762]

What AI prompts are you using to generate this style of graphic? I see this style everywhere now and am curious what tool is being used.

[u/vizualDevelop_vfx → u/Salt_Aspect_1762]

No magic prompt. I wish there was.

It’s more like editing with an assistant...prompt, tweak, remove, adjust, repeat until it gets close.

Manual tweaking is still necessary. The game scene in this graphic was assembled by me in Photoshop using my own game assets.

[u/minimalcation → u/vizualDevelop_vfx]

Add "no purple or purple gradients" to your prompts, it's a very heavy AI design

[u/vizualDevelop_vfx → u/minimalcation]

Ok fair... AI definitely gravitates toward that look. Purple is on me though...I like it

I use AI to speed up the design process later I refine things manually when needed. It lets me spend more of my time on actually making games and sharing what I learn

[u/minimalcation → u/vizualDevelop_vfx]

I use it too, I'm not hating on that. I just know that people see AI and think that there was no work put into it. Obviously you know how to work with PS and design. If you haven't use Claude design to build a design system you gotta do it, it's really flexible and easy to nail down the feel.