Godot - Displaying Text One Character at a Time in a RichTextLabel

The number of characters in the text is obtained using `length()` and a loop is implemented.
The process of adding one character at a time using `add_text()` is executed at a specified interval using `await`.

In GDScript, you can use `fill()` to replace all the values in an array with a specified value.
This changes existing values or null to the specified value.

# Create a new RichTextLabel
add_child(label)
label.global_position = Vector2(0, 0)
label.size = Vector2(200,200)
var label = RichTextLabel.new()

# Text to display
var label_text = "Make text come up one character at a time."

# Loop through the number of characters
for i in label_text.length():
	# Execute the process at a specified interval using await
	await get_tree().create_timer(0.1).timeout
	# Add one character from the text
	add_text(label_text[i])

If BBCode is enabled and you want to add tagged text, use `append_text()`.

# Create a new RichTextLabel
var label = RichTextLabel.new()

# Text to display
var label_text = "Make text come up one character at a time."

# Loop through the number of characters
for i in label_text.length():
	# Execute the process at a specified interval using await
	await get_tree().create_timer(0.1).timeout
	# Add one character from the text
	append_text(label_text[i])