Reduce the number of bones synchronized

This is a very simple approach to reducing the number of
bones send through sync_model_animation, done by simply
specifying a filter list. Only bones in the list, assuming
they exist on the model, are considered.

copyMultiplayer.gd

@@ -5,6 +5,9 @@ extends Mod_Base
 @export var address  := ""
 @export var port     := 52410
 
+## Hardcoded list of bone names that will get syncronized.
+var tracked_bones: Array[String]
+
 var main_controller: ModelController
 
 # Temporary positioning system.
@@ -18,6 +21,23 @@ var accumulative_offset := Vector3( 0.35, 0.0, 0.0)
 var functions_blendshapes: Script = load("res://Mods/MediaPipe/MediaPipeController_BlendShapes.gd")
 
 func _ready() -> void:
+	# FIXME: This is just thrown together. Dunno if this is an accurate list.
+	# TODO: Allow specifying additional bones, with the help of a hierachical list of existing bones in the model.
+	tracked_bones = [ "Hips", "Chest", "UpperChest", "Neck", "Head" ]
+	for side in [ "Left", "Right" ]:
+		# Legs
+		for bone in [ "UpperLeg", "LowerLeg", "Foot" ]:
+			tracked_bones.append("%s%s" % [ side, bone ])
+		# Arms
+		for bone in [ "Shoulder", "UpperArm", "LowerArm", "Hand" ]:
+			tracked_bones.append("%s%s" % [ side, bone ])
+		# Fingers
+		for phalange in [ "Metacarpal", "Proximal", "Distal" ]:
+			tracked_bones.append("%sThumb%s" % [ side, phalange ])
+		for finger in [ "Index", "Middle", "Ring", "Little" ]:
+			for phalange in [ "Proximal", "Intermediate", "Distal" ]:
+				tracked_bones.append("%s%s%s" % [ side, finger, phalange ])
+
 	# FIXME: Hardcoded way to get the main model controller.
 	main_controller = $"/root/SnekStudio_Main/ModelController"
 	main_controller.child_entered_tree.connect(model_changed)
@@ -89,6 +109,7 @@ func disconnect_pressed() -> void:
 		set_status("")
 		print_log("Closed server")
 		update_enabled_state(false)
+		clear_player_models()
 	multiplayer.multiplayer_peer.close()
 
 
@@ -100,7 +121,7 @@ func peer_connected(id: int) -> void:
 	new_controller.name = str(id)
 	add_child(new_controller)
 
-	player_order.push_back(id)
+	player_order.append(id)
 	update_model_transforms()
 
 	var filename = main_controller._last_loaded_vrm.get_file()
@@ -129,13 +150,7 @@ func server_disconnected() -> void:
 	set_status("")
 	print_log("Disconnected from server")
 	update_enabled_state(false)
-
-	for controller in get_children():
-		if controller is ModelController:
-			remove_child(controller)
-			controller.queue_free()
-	
-	player_order.clear()
+	clear_player_models()
 
 
 func update_enabled_state(is_online: bool) -> void:
@@ -169,6 +184,13 @@ func update_status() -> void:
 	var s := "s" if num_players != 1 else ""
 	set_status([side, ": ", num_players, " player", s])
 
+func clear_player_models() -> void:
+	for controller in get_children():
+		if controller is ModelController:
+			remove_child(controller)
+			controller.queue_free()
+	player_order.clear()
+
 
 @rpc("any_peer", "reliable")
 func change_model(filename: String) -> void:
@@ -201,7 +223,7 @@ func model_changed(child: Node) -> void:
 
 # FIXME: This sends way more information than necessary, but works as a proof-of-concept!
 @rpc("any_peer", "unreliable_ordered")
-func update(
+func sync_model_animation(
 	model_transform: Transform3D,
 	shape_dict: Dictionary, # Dictionary[String, float]
 	bone_poses: Dictionary, # Dictionary[String, Transform3D]
@@ -232,8 +254,9 @@ func _process(_delta: float) -> void:
 
 	var shape_dict = media_pipe_ctrl.blend_shape_last_values
 	var bone_poses = {}
-	for idx in skeleton.get_bone_count():
-		var bone_name = skeleton.get_bone_name(idx)
-		var bone_pose = skeleton.get_bone_pose(idx)
+	for bone_name in tracked_bones:
+		var bone_idx = skeleton.find_bone(bone_name)
+		if bone_idx == -1: continue
+		var bone_pose = skeleton.get_bone_pose(bone_idx)
 		bone_poses[bone_name] = bone_pose
-	update.rpc(model.transform, shape_dict, bone_poses)
+	sync_model_animation.rpc(model.transform, shape_dict, bone_poses)