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VRyHungry1/test/multiPlayerTest.tscn
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algodoogle 23ec41c1d6 Fix five multiplayer sync bugs, add automated two-instance test 
Adds test/multiPlayerTest.tscn plus a driver that runs the kitchen flow
across two game instances: grab/drop, dirt station, sink washing, hob
cooking, counter combining and plating. Runs headless (run_mp_test.ps1),
in two visible windows (run_mp_test_windowed.ps1), or by hand with
keyboard controls (play_mp_test.ps1). 108 checks, exits non-zero on
failure.

After every step both peers snapshot every item's position and rendered
state and the server diffs them. Targeted assertions only look at the
thing a step touched, which misses desyncs elsewhere - that audit is
what caught the last bug below.

Bugs found and fixed:

- net_pickable: apply_held_state() only wrote `enabled` in its
  non-authority branch, so once a client grabbed an item every other
  peer set enabled=false and regaining authority never restored it. The
  server could then never pick that item up again, and a station would
  "snap" it (emitting has_picked_up, so a plate still got marked dirty)
  while pick_up() bailed out on the disabled item - leaving the zone
  holding an item with no grab driver.

- network_manager: station gating only happened in the spawn path, so
  stations baked into a scene file kept running their snap zones on
  clients and grabbed items straight out of the local hand. Added
  gate_existing_stations().

- network_manager: despawn_item() only freed the server's copy. Items
  baked into a scene aren't tracked by the MultiplayerSpawner, so
  consuming one left a ghost on every client, which then blocked the
  station it sat in and got grabbed instead of its replacement.

- network_manager: the snap-into-station decision read the server's own
  copy of the item position, but the reliable release RPC routinely
  overtakes the synchronizer's unordered position updates - so it acted
  on a stale position and teleported items back into the station they
  had just been carried away from. The releasing peer now sends its
  final transform and the server adopts it first.

- container: contained_ids.append()/erase() mutate the array in place,
  which never fires the setter that rebuilds the plate's visuals. The
  peer that put food on a plate was the only peer that never redrew it;
  remote peers looked right because the synchronizer assigns there.

Also null-guards XRServer.get_tracker() in the vendored xr-tools hand
grab point, which threw on every successful grab without an XR runtime,
and adds multiplayer_world.populate_from_layout so debug scenes can bake
their own content instead of spawning the whole kitchen.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-07-26 02:00:50 +01:00

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[gd_scene format=3 uid="uid://bodj8op527o2c"]
[ext_resource type="Script" uid="uid://d1cefhe3yyyds" path="res://Scenes/multiplayer_world.gd" id="1_6uucx"]
[ext_resource type="PackedScene" uid="uid://j5s5wus7tuhb" path="res://XROrigin.tscn" id="2_j7vd1"]
[ext_resource type="Material" uid="uid://cmia50cfqxxo4" path="res://Textures/dev_material_3d.tres" id="3_ssbaf"]
[ext_resource type="Sky" uid="uid://c1abtpwhdm2d5" path="res://Textures/sky/NightSkyHDRI009_16K.tres" id="4_081u3"]
[ext_resource type="PackedScene" uid="uid://j7caslh27nor" path="res://Stations/Hob.tscn" id="5_t1fa7"]
[ext_resource type="PackedScene" uid="uid://dvrk268s7gkxh" path="res://Stations/sink.tscn" id="6_6jhmh"]
[ext_resource type="PackedScene" uid="uid://bp3v1jl8pctro" path="res://Containers/plate.tscn" id="7_bowes"]
[ext_resource type="PackedScene" uid="uid://cnjwtnhwh0i8q" path="res://Stations/dirt_station.tscn" id="8_pvl84"]
[ext_resource type="Script" uid="uid://biu4qr3nr1eny" path="res://test/mp_test_driver.gd" id="9_mptst"]
[ext_resource type="PackedScene" uid="uid://dpot5qie20vf6" path="res://Items/burger.tscn" id="10_51k0c"]
[ext_resource type="PackedScene" uid="uid://c0lknik4noobs" path="res://Items/BurgerBuns.tscn" id="11_psgbv"]
[ext_resource type="PackedScene" uid="uid://efaec6ymgabo" path="res://Stations/Counter.tscn" id="12_j5uvh"]
[sub_resource type="BoxShape3D" id="BoxShape3D_vlqg6"]
size = Vector3(15, 0.1, 15)
[sub_resource type="BoxMesh" id="BoxMesh_24d3s"]
material = ExtResource("3_ssbaf")
size = Vector3(15, 0.1, 15)
[sub_resource type="Environment" id="Environment_bvwq1"]
background_mode = 2
sky = ExtResource("4_081u3")
reflected_light_source = 2
ssr_enabled = true
ssao_enabled = true
ssil_enabled = true
sdfgi_enabled = true
[sub_resource type="BoxShape3D" id="BoxShape3D_arao0"]
size = Vector3(15, 20, 0.1)
[node name="Main" type="Node3D" unique_id=1312265607]
script = ExtResource("1_6uucx")
populate_from_layout = false
[node name="XROrigin3D" parent="." unique_id=2055526621 groups=["local_xr_origin"] instance=ExtResource("2_j7vd1")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.36171648, 0, 0.81835127)
[node name="DirectionalLight3D" type="DirectionalLight3D" parent="." unique_id=1376644384]
transform = Transform3D(-0.8660254, -0.43301278, 0.24999999, 0.3022632, -0.05510214, 0.9516306, -0.39829266, 0.8997021, 0.17860365, 0, 0, 0)
[node name="Floor" type="StaticBody3D" parent="." unique_id=122279514]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.05, 0)
[node name="CollisionShape3D" type="CollisionShape3D" parent="Floor" unique_id=958841648]
shape = SubResource("BoxShape3D_vlqg6")
[node name="MeshInstance3D" type="MeshInstance3D" parent="Floor/CollisionShape3D" unique_id=1939997056]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.00018164515, 0.0006352663, -0.002532661)
mesh = SubResource("BoxMesh_24d3s")
[node name="WorldEnvironment" type="WorldEnvironment" parent="." unique_id=1177077250]
environment = SubResource("Environment_bvwq1")
[node name="WorldContent" type="Node3D" parent="." unique_id=291550153]
[node name="Players" type="Node3D" parent="." unique_id=1595463693]
[node name="ItemsSpawner" type="MultiplayerSpawner" parent="." unique_id=627119248]
spawn_path = NodePath("../WorldContent")
[node name="PlayersSpawner" type="MultiplayerSpawner" parent="." unique_id=106645565]
_spawnable_scenes = PackedStringArray("res://Player/net_player.tscn")
spawn_path = NodePath("../Players")
[node name="StaticBody3D" type="StaticBody3D" parent="." unique_id=4404969]
[node name="CollisionShape3D" type="CollisionShape3D" parent="StaticBody3D" unique_id=998476672]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 9.197384, 7.589958)
shape = SubResource("BoxShape3D_arao0")
[node name="CollisionShape3D2" type="CollisionShape3D" parent="StaticBody3D" unique_id=340303902]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 9.197384, -7.509142)
shape = SubResource("BoxShape3D_arao0")
[node name="CollisionShape3D3" type="CollisionShape3D" parent="StaticBody3D" unique_id=1193703037]
transform = Transform3D(-4.371139e-08, 0, -1, 0, 1, 0, 1, 0, -4.371139e-08, -7.438612, 9.197384, -0.018813243)
shape = SubResource("BoxShape3D_arao0")
[node name="CollisionShape3D4" type="CollisionShape3D" parent="StaticBody3D" unique_id=1431367494]
transform = Transform3D(-4.371139e-08, 0, -1, 0, 1, 0, 1, 0, -4.371139e-08, 7.502467, 9.197384, -0.018813023)
shape = SubResource("BoxShape3D_arao0")
[node name="Hob" parent="." unique_id=1687971542 instance=ExtResource("5_t1fa7")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.5, 0)
[node name="Sink" parent="." unique_id=2055277359 instance=ExtResource("6_6jhmh")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0.5, 0)
[node name="Plate" parent="." unique_id=190487773 instance=ExtResource("7_bowes")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 1.4050963, 1.1702834, 0.049627244)
[node name="DirtStation" parent="." unique_id=160842153 instance=ExtResource("8_pvl84")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 2, 0.5, 0)
[node name="TestDriver" type="Node" parent="." unique_id=1002011928]
script = ExtResource("9_mptst")
[node name="raw_burger" parent="." unique_id=1675596942 instance=ExtResource("10_51k0c")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.28692234, 1.0149999, 0.3505687)
[node name="BurgerBuns" parent="." unique_id=1088240294 instance=ExtResource("11_psgbv")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.40037438, 1.0094403, 0.34120744)
[node name="Counter" parent="." unique_id=1487893288 instance=ExtResource("12_j5uvh")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -1, 0.5, 0)
[node name="Counter2" parent="." instance=ExtResource("12_j5uvh")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -2, 0.5, 0)
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