aescending key pitch

autoloads/audio.gd

@@ -51,9 +51,10 @@ var loop_section = null
 var has_looped = false
 
 #Plays a sound
-func play_sound(snd,player):
-	player.set_stream(snd)
-	player._set_playing(true)
+func play_sound(snd: AudioStream, player: AudioStreamPlayer, pitch: float = 1.0):
+	player.stream = snd
+	player.pitch_scale = pitch
+	player.play()
 	
 #Play music, if same track is already playing do nothing
 func play_music(song):

objects/collectibles/key.gd

@@ -1,5 +1,15 @@
 extends Node2D
 
+const SEMITONE := 1.05946
+const TIMEOUT := 1000
+const MAX_PITCH := 5.0
+
+const STATIC = {
+	pitch = -2.0,
+	timeout = -1,
+}
+
+
 func _ready():
 	#Sync all coinframes
 	$AnimatedSprite.play()
@@ -10,5 +20,11 @@ func _on_Area2D_body_entered(body: Node) -> void:
 	if body.is_in_group("player"):
 		Game.keys += 1
 		Game.score += 5
-		Audio.play_sound(Audio.a_key,Audio.ac_collectible)
+		# pitch increase
+		if Time.get_ticks_msec() < STATIC.timeout:
+			STATIC.pitch = min(STATIC.pitch + 1.0, MAX_PITCH)
+		else:
+			STATIC.pitch = -2.0
+		STATIC.timeout = Time.get_ticks_msec() + TIMEOUT
+		Audio.play_sound(Audio.a_key,Audio.ac_collectible, pow(SEMITONE, STATIC.pitch))
 		queue_free()