From 538d21f36de016b87bcc27ed3c4e9066b84a618d Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <ste.pigozzi@gmail.com>
Date: Sat, 3 Oct 2020 03:46:52 +0200
Subject: [PATCH] =?UTF-8?q?=E2=9D=87=EF=B8=8F=20Conductor:=20add=20support?=
 =?UTF-8?q?=20for=20beat=20submultiples?=
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---
 Scenes/Conductor.tscn |  4 ----
 Scripts/Conductor.gd  | 44 +++++++++++++++++++++++++------------------
 2 files changed, 26 insertions(+), 22 deletions(-)

diff --git a/Scenes/Conductor.tscn b/Scenes/Conductor.tscn
index 5f333a7..93099b7 100644
--- a/Scenes/Conductor.tscn
+++ b/Scenes/Conductor.tscn
@@ -2,10 +2,6 @@
 
 [ext_resource path="res://Scripts/Conductor.gd" type="Script" id=1]
 
-
-
-
-
 [node name="Conductor" type="Node"]
 script = ExtResource( 1 )
 
diff --git a/Scripts/Conductor.gd b/Scripts/Conductor.gd
index 8ff069f..95f9da6 100644
--- a/Scripts/Conductor.gd
+++ b/Scripts/Conductor.gd
@@ -11,16 +11,23 @@ export(float, 0, 1000000) var song_offset: float = 0
 # The time the song started playing at
 var start_time: int
 
-# The time of the last beat
-var last_beat: int
-
-# A song beat
+# Song beats signals
+signal quarter_beat
+signal half_beat
 signal beat
+signal four_beats
+signal two_beats
+
+# The time of the last quarter_beat
+var last_qb: int
+
+# The count of quarter_beats so far
+var count_qb: int = 0
 
 
 # Calculate the microseconds per beat
-func usec_per_beat():
-	return 60000000 / song_bpm
+func usec_per_quarter_beat():
+	return 60000000 / (song_bpm * 4)
 
 
 # Returns microseconds since the song start
@@ -37,24 +44,25 @@ func corrected_time():
 # Start playing the song
 func play():
 	start_time = OS.get_ticks_usec()
+	count_qb = 0
 	$Music.play()
 
 
-# Signal that a beat has happened
-func beat():
-	pass
-
-
 func _ready():
 	play()
 
 
 func _process(delta):
 	var time = corrected_time()
-	if time - last_beat >= usec_per_beat():
-		emit_signal("beat")
-		last_beat = time
-
-
-func _on_Conductor_beat():
-	print("Beat! %f" % song_time())
+	if time - last_qb >= usec_per_quarter_beat():
+		emit_signal("quarter_beat")
+		if count_qb % 2 == 0:
+			emit_signal("half_beat")
+		if count_qb % 4 == 0:
+			emit_signal("beat")
+		if count_qb % 8 == 0:
+			emit_signal("two_beats")
+		if count_qb % 16 == 0:
+			emit_signal("four_beats")
+		last_qb = time
+		count_qb += 1