Godot 4: Candle flame shader (tutorial)

Hey everyone! This time, we'll be playing with fire. It's not the first time I've created a fire shader, but back then, I used a noise texture and a curve as a parameter, which significantly simplified the whole process. Now, we'll try it without such tools and generate a candle flame, which, as always, will have plenty of parameters for further adjustments. So let's get to it.