Clean Up Your Godot Logic in 30 Seconds!

On the power of signal parameter binding…

Ever wanted to do some factorisation in your code by removing almost-similar functions that just use a different input?

Well — you need to learn about parameter binding! ’Cause, in Godot, you can actually bind extra parameters to your signal callbacks… and this way, you can call a pre-existing function with additional info, or call the same function with different contexts!

👉 3D character models by Kay Lousberg: https://kaylousberg.itch.io/
👉 Grid texture by Kenney: https://kenney.nl/

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A quick example

Suppose you want to make a character selection screen, and you’ve got three possible heroes for the player. One possibility could be to have a button for each hero, and when the player clicks on the button, the matching hero is selected:

In that case, you’d probably have a selection function in your code that looks a bit like this:

• In GDScript: