added the game

Scripts/Parts/DiscoBg.gd

@@ -0,0 +1,46 @@
+extends Parallax2D
+
+var level_bpm := 120
+
+@export var level := 0.5
+
+var is_star := false
+
+var beats := -1
+
+var tween: Tween = null
+
+func _ready() -> void:
+	modulate.a = 0
+	AudioManager.music_beat.connect(on_timeout)
+	on_timeout()
+
+func _physics_process(delta: float) -> void:
+	scroll_offset.y = lerpf(scroll_offset.y, lerpf(128, 0, level), delta * 5)
+	modulate.a = lerpf(modulate.a, lerpf(0, 1, level), delta * 5)
+	$TextureRect.position.y = move_toward($TextureRect.position.y, -64, delta * (level_bpm / 10))
+
+
+func on_timeout(idx := 0) -> void:
+	beats = idx
+	if is_star == false:
+		tween_back()
+		if beats % 4 == 0:
+			$AudioStreamPlayer.pitch_scale = 2
+		else:
+			$AudioStreamPlayer.pitch_scale = 1
+		$AudioStreamPlayer.play()
+
+
+
+
+func tween_back() -> void:
+	if tween != null:
+		tween.kill()
+	tween = create_tween().set_trans(Tween.TRANS_CUBIC)
+	tween.tween_property($TextureRect, "position:y", -160, 0.05)
+
+
+func on_starttimeout() -> void:
+	if is_star:
+		tween_back()