Jittering but synchronized physics state

src/modules/3d_test_ship.tscn

@@ -550,9 +550,6 @@ physics_mode = 2
 transform = Transform3D(0.99989736, 0, 0.014328662, -0.014328662, -4.371139e-08, 0.99989736, 6.263257e-10, -1, -4.37069e-08, -1.5009866, -1.4999988, 1.9908428)
 physics_mode = 2
 
-[node name="Spawner" parent="." unique_id=6714366 instance=ExtResource("3_ism2t")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 2)
-
 [node name="OmniLight3D" type="OmniLight3D" parent="." unique_id=1071155008]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 1.4, 1, -3)
 
@@ -569,5 +566,8 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 1.4, 1, 4)
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 3)
 current = true
 
+[node name="Spawner" parent="." unique_id=6714366 instance=ExtResource("3_ism2t")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 2)
+
 [node name="MultiplayerSynchronizer" type="MultiplayerSynchronizer" parent="." unique_id=2096937457]
 replication_config = SubResource("SceneReplicationConfig_ism2t")

src/scenes/character/character_pawn_3d.tscn

@@ -35,6 +35,7 @@ properties/4/replication_mode = 0
 
 [node name="CharacterPawn3D" type="RigidBody3D" unique_id=288275840]
 physics_interpolation_mode = 1
+top_level = true
 script = ExtResource("1_4frsu")
 metadata/_custom_type_script = "uid://cdmmiixa75f3x"
 

src/scenes/ship/builder/pieces/structural_piece.gd

@@ -55,7 +55,7 @@ func _scan_and_weld_neighbors():
 					_create_weld_to(other_piece)
 
 func _create_weld_to(neighbor: StructuralPiece):
-	print("Welding %s to %s" % [self.name, neighbor.name])
+	# print("Welding %s to %s" % [self.name, neighbor.name])
 	
 	# 1. Create the Joint
 	var joint = Generic6DOFJoint3D.new()

src/scenes/ship/components/hardware/spawner.gd

@@ -1,5 +1,4 @@
-extends Area3D
-class_name Spawner
+class_name Spawner extends Area3D
 
 @onready var mp_spawner: MultiplayerSpawner = $MultiplayerSpawner
 @export var disabled: bool = false
@@ -10,6 +9,7 @@ func _ready():
 	# We wait one frame to ensure singletons are ready.
 	await get_tree().process_frame
 	GameManager.register_spawner(self)
+	mp_spawner.spawn_path = get_parent().get_path()
 
 func can_spawn() -> bool:
 	return false if disabled else get_overlapping_bodies().is_empty()

src/scenes/ship/components/hardware/spawner.tscn

@@ -5,12 +5,12 @@
 [sub_resource type="SphereShape3D" id="SphereShape3D_lldyu"]
 radius = 1.0
 
-[node name="Spawner" type="Area3D"]
+[node name="Spawner" type="Area3D" unique_id=1511371555]
 script = ExtResource("1_lldyu")
 
-[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
+[node name="CollisionShape3D" type="CollisionShape3D" parent="." unique_id=1330579270]
 shape = SubResource("SphereShape3D_lldyu")
 
-[node name="MultiplayerSpawner" type="MultiplayerSpawner" parent="."]
+[node name="MultiplayerSpawner" type="MultiplayerSpawner" parent="." unique_id=1624471299]
 _spawnable_scenes = PackedStringArray("uid://7yc6a07xoccy")
 spawn_path = NodePath("..")

src/scripts/orbital_body_3d.gd

@@ -42,7 +42,7 @@ func _ready():
 	if physics_mode == PhysicsMode.ANCHORED:
 		_update_gravity_proxy()
 		linear_velocity = gravity_proxy_parent.linear_velocity if is_instance_valid(gravity_proxy_parent) else Vector3.ZERO
-		print(name, " initialized as ANCHORED with gravity proxy: ", gravity_proxy_parent)
+		# print(name, " initialized as ANCHORED with gravity proxy: ", gravity_proxy_parent)
 
 func _notification(what):
 	# Automatically update gravity proxy when the scene hierarchy changes
@@ -68,10 +68,10 @@ func _update_gravity_proxy():
 	# 2. Assign the proxy
 	if new_proxy != gravity_proxy_parent:
 		gravity_proxy_parent = new_proxy
-		if new_proxy:
-			print(name, " auto-parented gravity proxy to: ", new_proxy.name)
-		else:
-			print(name, " detached from gravity proxy (Independent Mode).")
+		# if new_proxy:
+		# 	print(name, " auto-parented gravity proxy to: ", new_proxy.name)
+		# else:
+		# 	print(name, " detached from gravity proxy (Independent Mode).")
 
 # --- PUBLIC FORCE APPLICATION METHODS ---
 

src/scripts/singletons/game_manager.gd

@@ -58,7 +58,7 @@ func _try_spawn_waiting_player():
 		var player_id = waiting_players.pop_back()
 
 		print("GameManager: Spawner is now available. Spawning waiting player %d." % player_id)
-		var spawn_point = find_available_spawner()
+		var spawn_point: Spawner = find_available_spawner()
 
 		if spawn_point:
 			_spawn_player_pawn(player_id)
@@ -67,7 +67,8 @@ func _try_spawn_waiting_player():
 
 			# pawn.set_multiplayer_authority(player_id)
 
-			spawn_point.add_child(pawn)
+			get_node(spawn_point.mp_spawner.spawn_path).add_child(pawn)
+			pawn.global_transform = spawn_point.global_transform
 			
 			# Traverse up to find the physics body (Ship/Module) we just spawned inside
 			var parent_body = _get_orbital_body_ancestor(spawn_point)