Fading one or more characters in at a time smoothly about defold-richtext HOT 8 CLOSED

local function create_fade_in_example()
	local long_text = [[
	This is a text that should fade in character by character. This text is long to make it easier to see the visual effect.

	Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis porta eu ligula in varius. 

	Vestibulum fringilla rhoncus vestibulum. Nullam rutrum diam eu quam volutpat, ut laoreet massa suscipit. 

	Nulla id eleifend erat. Donec commodo quam nec posuere efficitur. Vestibulum a justo ex. 

	Vestibulum facilisis, felis id semper scelerisque, magna metus pretium felis, vel fermentum ipsum mauris a quam.
	]]
	local settings = { position = vmath.vector3(20, 900, 0), align = richtext.ALIGN_LEFT, width = 640 }
	local words = richtext.create(long_text, "Roboto-Regular", settings)

	local fade_duration = 0.44
	local fade_delay = 0.022
	coroutine.wrap(function()
		-- disable all words
		for i=1,#words do
			gui.set_enabled(words[i].node, false)
		end

		-- iterate over words and fade them in character by character
		for i=1,#words do
			local word = words[i]
			
			-- split into individual characters and fade in
			local characters = richtext.characters(word)
			for i,char in ipairs(characters) do
				fade_in(char.node, go.EASING_INOUTSINE, fade_duration, (i - 1) * fade_delay)
			end

			-- start a timer to delete the individual characters and re-enable original word
			local max_delay = (#characters - 1) * fade_delay
			
			timer.delay(fade_duration + max_delay, false, function()
				for _,char in ipairs(characters) do
					gui.delete_node(char.node)
				end
				gui.set_enabled(word.node, true)
			end)

			fade_delay = fade_delay
			fade_duration = fade_duration
			
			-- wait before dealing with the next word
			delay(max_delay)
		end
	end)()
	
	return words
end

fade_delay = fade_delay
fade_duration = fade_duration