Setting RTPC Values - alessandrofama/wwise-godot-integration GitHub Wiki

Consider this simple scene tree:

We want to set the RTPC value of a game sync named Volume (mapped to the Voice volume of the respective playlist container) to a random value between 0 and 100 every frame.

To do this, we attach a script to the root node and call Wwise.set_rtpc_value in the _process callback:

func _process(delta):
	Wwise.set_rtpc_value("Volume", randf_range(0, 100), $MusicEvent)

The first parameter is name of the game sync, the second the value and third the associated game_object. For AkEvent nodes, you can pass directly the node as this parameter.

If you are manually posting events in GDScript, you can set RTPC values by passing the registered game_object as the third parameter to Wwise.set_rtpc_value. In this example, the node in which the script resides is registered as the game_object:

func _ready():
	Wwise.register_game_obj(self, "Music GameObject")
	Wwise.post_event("Music", self)

func _process(delta):
	Wwise.set_rtpc_value("Volume", randf_range(0, 100), self)

If you need to set a global RTPC value simply pass null as the third game_object parameter to Wwise.set_rtpc_value:

func _process(delta):
	Wwise.set_rtpc_value("Volume", randf_range(0, 100), null)