Light2D flickering effect

flickering_effect.gd

extends Light2D

@export
var one_cycle_in_milliseconds = 1500

@export var min_alpha_number = 0
@export var max_alpha_number = 1

var intermediate_value = 0

func _process(delta: float):
	var delta_in_milliseconds = delta * 1000
	intermediate_value += delta_in_milliseconds

	if intermediate_value >= one_cycle_in_milliseconds:
		intermediate_value -= one_cycle_in_milliseconds

	var percent_of_current_run = 100.0 / one_cycle_in_milliseconds * intermediate_value
	var alpha_value = _get_alpha_value(percent_of_current_run)

	self.color = Color(self.color.r, self.color.g, self.color.b, alpha_value)

func _get_alpha_value(percent):
	if percent >= 0 and percent < 10.1:
		return min_alpha_number
	if percent >= 10.2 and percent < 20.1:
		return min_alpha_number
	if percent >= 20.6 and percent < 30.1:
		return min_alpha_number
	if percent >= 30.6 and percent < 45.1:
		return min_alpha_number
	if percent >= 55.1 and percent < 57.1:
		return min_alpha_number
	if percent >= 60.1 and percent < 65.1:
		return min_alpha_number
	if percent >= 75.1 and percent < 77.1:
		return min_alpha_number
	if percent >= 85.1 and percent < 86.1:
		return min_alpha_number
	else:
		return max_alpha_number