The entire effect fits in this post 👇

class_name RevealEffect extends RichTextEffect

var bbcode: String = "reveal"
var cutoff_index := 0

func _process_custom_fx(char_fx: CharFXTransform) -> bool:
if char_fx.relative_index >= cutoff_index:
char_fx.color.a = 0.0
return true

Spent some time diving into CSS mask reveal effects. If you’re looking to add smooth transitions to your website, this might be a fun place to start! #cssmask #revealeffect #optimisticweb youtu.be/z8cNQ1CnPuw

🟢🟡 Fancy reveal effect to your images with a few lines of code
by Temani Afif @ChallengesCss
#@​property #css #webdev #animation #RevealEffect

codepen.io/t_afif/full/...