the recording revolution is upon us

Scripts/EditorScreen.gd

@@ -1,5 +1,24 @@
 extends Control
 
+var playing : bool = false
+var recording : bool = false
+var index : int = 0
+var playback_rate : int = 1
+
+signal step_forward()
+signal step_backward()
+signal start_recording()
+signal end_recording()
+signal return_to_zero()
+
+func update_time_label() -> void:
+	var frames = index % 60
+	var seconds = floori(index/60) % 60
+	var minutes = floori(index/360) % 60
+	var hours = floori(index/7200)
+	$SequencerPanel/TransportControls/TimeLabel.text = "%d:%02d:%02d:%02d" % [hours, minutes, seconds, frames] 
+	#$SequencerPanel/TransportControls/TimeLabel.text = str(index)
+
 func _ready() -> void:
 	get_tree().get_root().size_changed.connect(_on_size_changed) 
 
@@ -8,6 +27,12 @@ func _input(event: InputEvent) -> void:
 		$CameraPreview.visible = !$CameraPreview.visible;
 		$CameraFullScreen.visible = !$CameraFullScreen.visible;
 
+func _physics_process(_delta: float) -> void:
+	if (playing || recording):
+		step_forward.emit()
+		index += 1
+		update_time_label()
+
 func _on_size_changed() -> void:
 	$SubViewport.size = $ColorRect.size
 
@@ -25,3 +50,63 @@ func _on_credits_input_eater_pressed() -> void:
 
 func _on_v_scroll_bar_value_changed(value: float) -> void:
 	$SequencerPanel/TimelinePanel/InvisibleMask/RowsHandle.position.y = value * -44
+
+
+func _on_play_button_pressed() -> void:
+	playback_rate = 1
+	playing = true
+	recording = false
+	end_recording.emit()
+
+func _on_pause_button_pressed() -> void:
+	playing = false
+	recording = false
+	end_recording.emit()
+
+func _on_play_backwards_button_pressed() -> void:
+	playback_rate = -1
+	playing = true
+	recording = false
+	end_recording.emit()
+
+func _on_fast_backwards_button_pressed() -> void:
+	playback_rate = -2
+	playing = true
+	recording = false
+	end_recording.emit()
+
+func _on_step_backwards_button_pressed() -> void:
+	playing = false
+	recording = false
+	end_recording.emit()
+	step_backward.emit()
+	if (index != 0): index -= 1
+	update_time_label()
+
+func _on_fast_forward_button_pressed() -> void:
+	playback_rate = 2
+	playing = true
+	recording = false
+	end_recording.emit()
+
+func _on_step_forward_button_pressed() -> void:
+	playing = false
+	recording = false
+	end_recording.emit()
+	step_forward.emit()
+	index += 1
+	update_time_label()
+
+func _on_record_button_pressed() -> void:
+	playback_rate = 1
+	playing = false
+	recording = true
+	start_recording.emit()
+
+func _on_stop_button_pressed() -> void:
+	playing = false
+	recording = false
+	index = 0
+	end_recording.emit()
+	return_to_zero.emit()
+	update_time_label()