mirror of
https://github.com/Steffo99/looping-for-loops.git
synced 2024-11-22 16:14:22 +00:00
61 lines
1.2 KiB
GDScript3
61 lines
1.2 KiB
GDScript3
|
extends Node
|
||
|
|
class_name Conductor
|
||
|
|
# The Conductor (optionally) plays a song, and sends signals based on the beats of the song.
|
||
|
|
|
||
|
|
# The beats per minute of the song
|
||
|
|
export(float, 1, 500) var song_bpm: float = 120
|
||
|
|
|
||
|
|
# Microseconds of silence present in the song
|
||
|
|
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
|
||
|
|
signal beat
|
||
|
|
|
||
|
|
|
||
|
|
# Calculate the microseconds per beat
|
||
|
|
func usec_per_beat():
|
||
|
|
return 60000000 / song_bpm
|
||
|
|
|
||
|
|
|
||
|
|
# Returns microseconds since the song start
|
||
|
|
func song_time():
|
||
|
|
var current_time: int = OS.get_ticks_usec()
|
||
|
|
return current_time - start_time
|
||
|
|
|
||
|
|
# Return corrected microseconds (after applying the offset) since the song start
|
||
|
|
func corrected_time():
|
||
|
|
var song_time = song_time()
|
||
|
|
return song_time - song_offset
|
||
|
|
|
||
|
|
|
||
|
|
# Start playing the song
|
||
|
|
func play():
|
||
|
|
start_time = OS.get_ticks_usec()
|
||
|
|
$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())
|