stormy day

objects/gfx/lightning.gd

@@ -0,0 +1,34 @@
+extends Node2D
+
+
+export var color: Color
+export var width: float = 1.5
+export var segments: int
+export var segment_length: float
+export var angle_min: float
+export var angle_max: float
+export var branch_chance: float
+export var fade_time: float
+
+
+func _ready() -> void:
+	var tween = create_tween()
+	tween.tween_property(self, "modulate:a", 0.0, fade_time).set_trans(Tween.TRANS_EXPO)
+	tween.tween_callback(self, "queue_free")
+
+
+func _draw() -> void:
+	var pos := Vector2.ZERO
+	var dir := Vector2.DOWN * segment_length
+	var offset = randi() % 2
+	for i in range(offset, segments + offset):
+		var angle = rand_range(angle_min, angle_max)
+		if i % 2 == 0:
+			angle *= -1.0
+		dir = dir.rotated(deg2rad(angle))
+		var new_pos = pos + dir
+		draw_line(pos, new_pos, color, width, false)
+		if randf() <= branch_chance:
+			dir = dir.rotated(deg2rad(angle) * -2.0)
+			draw_line(pos, pos + dir, color, width, false)
+		pos = new_pos