Add: square wave and waveform switch interface in godot

1 files changed, 14 insertions, 3 deletions

diff --git a/klangfarb/main.gd b/klangfarb/main.gd
index f91dbb7..8abf461 100644
--- a/klangfarb/main.gd
+++ b/klangfarb/main.gd
@@ -1,10 +1,13 @@
 extends AudioStreamPlayer
 
 # controllable frequency interface
-export(float, 20, 8000, 10) var freq = 440.0
+export(float, 20, 8000, 5) var freq = 440.0
+# control wave form
+export(String, "sine", "square") var waveform = "sine"
 
 # load the GDNative script connected to the rust lib
 var Osc = preload("res://Osc.gdns")
+
 # make an instance of our one "class" in rust lib
 var wave = Osc.new()
 
@@ -20,10 +23,18 @@ func _fill_buffer() -> void:
 		# playback stream buffer
 		playback.push_buffer(wave.frames(freq, to_fill)) 
 
-func _process(_delta):
-		_fill_buffer()
+func _process(delta):
+	if waveform == "square":
+		wave.square()
+		playback.clear_buffer()
+	else:
+		wave.sine()
+		playback.clear_buffer()
+	_fill_buffer()
 
 func _ready() -> void:
+	# buffer length of 100ms gives us ~realtime response to input changes
+	self.stream.buffer_length = 0.1
 	# ensure Godot/Sine have the same sample rate
 	wave.set_sample_rate(self.stream.mix_rate)
 	# get our AudioStreamPlayback object