make proper setup for VRPN with buttons and trackers

addons/vrpn/scripts/VRPN.gd

@@ -3,6 +3,7 @@ extends Node
 
 # tracking associated data
 enum TrackingDataType { POS_QUAT, VELOCITY, ACCELERATION }
+enum ButtonDataType { BUTTON_STATE, BUTTON_CHANGE }
 
 # magic cookie
 const magic_cookie_start : String = "vrpn: ver."
@@ -21,7 +22,8 @@ signal error(msg:String)
 @export var vrpn_server : String = "127.0.0.1"
 @export var vrpn_port : int = 3883
 
-@export var tracker_receivers : Array[VRPN_Receiver] = []
+var tracker : Array[VRPN_Tracker] = []
+var buttons : Array[VRPN_Button] = []
 
 @onready var _stream: StreamPeerTCP = StreamPeerTCP.new()
 
@@ -174,8 +176,8 @@ static func marshall_body(data : PackedByteArray,message_type : int, sender_id:
 			# VRPN quat layout and Godot Quaternion c'tor identical with x,y,z,w
 			var quat = Quaternion(body.get_double(),body.get_double(),body.get_double(),body.get_double()).normalized()
 			# submit to listener
-			for r in session.tracker_receivers:
-				r._on_tracker({
+			for r in session.tracker:
+				r._on_vrpn({
 					"type" : TrackingDataType.POS_QUAT,
 					"tracker" : session.sensors[sender_id],
 					"sensor" : sensor_id,
@@ -191,8 +193,8 @@ static func marshall_body(data : PackedByteArray,message_type : int, sender_id:
 			# VRPN quat layout and Godot Quaternion c'tor identical with x,y,z,w
 			var vel_rot = Quaternion(body.get_double(),body.get_double(),body.get_double(),body.get_double()).normalized()
 			# submit to listener
-			for r in session.tracker_receivers:
-				r._on_tracker({
+			for r in session.tracker:
+				r._on_vrpn({
 					"type" : TrackingDataType.VELOCITY,
 					"tracker" : session.sensors[sender_id],
 					"sensor" : sensor_id,
@@ -210,8 +212,8 @@ static func marshall_body(data : PackedByteArray,message_type : int, sender_id:
 
 			var acc_dt = body.get_double() # padding 
 			# submit to listener
-			for r in session.tracker_receivers:
-				r._on_tracker({
+			for r in session.tracker:
+				r._on_vrpn({
 					"type" : TrackingDataType.ACCELERATION,
 					"tracker" : session.sensors[sender_id],
 					"sensor" : sensor_id,
@@ -219,6 +221,25 @@ static func marshall_body(data : PackedByteArray,message_type : int, sender_id:
 					"acceleration_rotation" : acc_rot,
 					"acceleration_dt" : acc_dt
 				})
+		'vrpn_Button Change':
+			var num_buttons : int = body.get_32()
+			var button_changes : Dictionary = {}
+			for i in range(num_buttons):
+				button_changes[i] = body.get_32()
+			for button in session.buttons:
+				button._on_vrpn(
+					{
+						"type" : ButtonDataType.BUTTON_CHANGE,
+						"sensor" : session.sensors[sender_id],
+						"changes" : button_changes
+					}
+				)
+		'vrpn_Button States':
+			var num_buttons : int = body.get_32()
+			for i in range(num_buttons):
+				var button_state = body.get_32()
+				#print("button state {0} : {1}".format([i,button_state]))
+				
 		_:
 			pass
 			

addons/vrpn/scripts/VRPN_Button.gd

@@ -0,0 +1,18 @@
+class_name VRPN_Button
+extends Node
+
+@export var vrpn : VRPN = null
+@export var button_sensor : String = "Button0"
+@export var register_on_start : bool = true
+
+var state : int = 0
+
+func _ready():
+	if not vrpn:
+		push_warning("No VRPN client for button on '%s' given." % [self.name])
+	elif register_on_start:
+		vrpn.buttons.append(self)
+
+func _on_vrpn(vrpn_data : Dictionary) -> void:
+	if vrpn_data['sensor'] == button_sensor:
+		pass

addons/vrpn/scripts/VRPN_Button.gd.uid

@@ -0,0 +1 @@
+uid://bmlyip5xa5df4

addons/vrpn/scripts/VRPN_Receiver.gd

@@ -1,20 +0,0 @@
-extends Node3D
-
-class_name VRPN_Receiver
-
-@export var tracker_name : String = "Tracker0"
-@export var tracker_sensor : int = 0
-@export var tracker_use_position : bool = true
-@export var tracker_use_rotation : bool = true
-
-func _on_tracker(tracker_data : Dictionary):
-	match tracker_data['type'] as VRPN.TrackingDataType:
-		VRPN.TrackingDataType.POS_QUAT:
-			if tracker_data['tracker'] == tracker_name and tracker_data['sensor'] == tracker_sensor:
-				if tracker_use_position:
-					self.global_position = tracker_data['position']
-				if tracker_use_rotation:
-					var rotation := tracker_data['rotation'] as Quaternion
-					self.global_basis =  Basis(rotation)
-		_:
-			push_warning("unknown tracker datatype")

addons/vrpn/scripts/VRPN_Tracker.gd

@@ -0,0 +1,33 @@
+class_name VRPN_Tracker
+extends Node3D
+
+@export var vrpn : VRPN = null
+@export var tracker_name : String = "Tracker0"
+@export var tracker_sensor : int = 0
+@export var tracker_use_position : bool = true
+@export var tracker_use_rotation : bool = true
+@export var register_on_start : bool = true
+
+func _ready() -> void:
+	if vrpn and register_on_start:
+		vrpn.tracker.append(self)
+
+func _on_vrpn(vrpn_data : Dictionary):
+	match vrpn_data['type'] as VRPN.TrackingDataType:
+		VRPN.TrackingDataType.POS_QUAT:
+			if vrpn_data['tracker'] == tracker_name and vrpn_data['sensor'] == tracker_sensor:
+				if tracker_use_position:
+					self.global_position = vrpn_data['position']
+				if tracker_use_rotation:
+					var rotation := vrpn_data['rotation'] as Quaternion
+					self.global_basis =  Basis(rotation)
+		VRPN.TrackingDataType.ACCELERATION:
+			pass
+		VRPN.TrackingDataType.VELOCITY:
+			pass
+		_:
+			push_warning("unknown tracker datatype")
+
+
+func _on_vrpn_connected(s):
+	pass # Replace with function body.