1e98d81448
Preserve canonical live-object ownership across Hidden transitions and remote teleport placement so effects, collision, streaming, and targeting remain synchronized.
1057 lines
42 KiB
C#
1057 lines
42 KiB
C#
using AcDream.App.Streaming;
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using AcDream.App.World;
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using AcDream.App.Rendering.Vfx;
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using AcDream.Core.Net;
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using AcDream.Core.Net.Messages;
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using AcDream.Core.Physics;
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using AcDream.Core.Vfx;
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using AcDream.Core.World;
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using DatReaderWriter.DBObjs;
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using DatReaderWriter.Types;
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using DatPhysicsScript = DatReaderWriter.DBObjs.PhysicsScript;
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namespace AcDream.App.Tests.World;
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public sealed class LiveEntityRuntimeTests
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{
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private sealed class RecordingResources : ILiveEntityResourceLifecycle
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{
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public int RegisterCount { get; private set; }
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public int UnregisterCount { get; private set; }
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public void Register(WorldEntity entity) => RegisterCount++;
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public void Unregister(WorldEntity entity) => UnregisterCount++;
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}
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private sealed class AnimationRuntime(WorldEntity entity) : ILiveEntityAnimationRuntime
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{
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public WorldEntity Entity { get; } = entity;
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}
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private sealed class EffectProfile : ILiveEntityEffectProfile { }
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private sealed class RemoteMotionRuntime : ILiveEntityRemoteMotionRuntime
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{
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public PhysicsBody Body { get; } = new();
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}
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private sealed class FailingRegisterResources : ILiveEntityResourceLifecycle
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{
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public int RegisterCount { get; private set; }
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public int UnregisterCount { get; private set; }
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public void Register(WorldEntity entity)
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{
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RegisterCount++;
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throw new InvalidOperationException("fixture registration failure");
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}
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public void Unregister(WorldEntity entity) => UnregisterCount++;
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}
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private sealed class FailingUnregisterResources(uint failingGuid) : ILiveEntityResourceLifecycle
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{
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public int UnregisterCount { get; private set; }
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public void Register(WorldEntity entity) { }
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public void Unregister(WorldEntity entity)
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{
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UnregisterCount++;
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if (entity.ServerGuid == failingGuid)
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throw new InvalidOperationException("fixture unregister failure");
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}
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}
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[Fact]
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public void RegisterRebucketWithdrawAndRestore_UsesOneLogicalCreate()
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{
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var spatial = new GpuWorldState();
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spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
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spatial.AddLandblock(EmptyLandblock(0x0102FFFFu));
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var resources = new RecordingResources();
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var runtime = new LiveEntityRuntime(spatial, resources);
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WorldSession.EntitySpawn spawn = Spawn(0x70000001u, 1, 1, 0x01010001u);
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LiveEntityRegistrationResult registered = runtime.RegisterLiveEntity(spawn);
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WorldEntity? entity = runtime.MaterializeLiveEntity(
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spawn.Guid,
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spawn.Position!.Value.LandblockId,
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id => Entity(id, spawn.Guid));
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runtime.SetAnimationRuntime(spawn.Guid, new AnimationRuntime(entity!));
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var visibilityEdges = new List<bool>();
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runtime.ProjectionVisibilityChanged += (_, visible) => visibilityEdges.Add(visible);
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Assert.True(registered.LogicalRegistrationCreated);
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Assert.Equal(1, resources.RegisterCount);
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Assert.Single(spatial.Entities);
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Assert.True(runtime.RebucketLiveEntity(spawn.Guid, 0x01020001u));
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Assert.Equal(1, resources.RegisterCount);
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Assert.Single(spatial.Entities);
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Assert.True(runtime.WithdrawLiveEntityProjection(spawn.Guid));
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Assert.Empty(spatial.Entities);
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Assert.Empty(runtime.WorldEntities);
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Assert.Equal(1, resources.RegisterCount);
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Assert.Equal(0, resources.UnregisterCount);
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Assert.True(runtime.TryGetAnimationRuntime(entity!.Id, out _));
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Assert.True(runtime.RebucketLiveEntity(spawn.Guid, 0x01010001u));
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Assert.Single(spatial.Entities);
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Assert.Equal(1, resources.RegisterCount);
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Assert.True(runtime.TryGetAnimationRuntime(entity!.Id, out _));
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Assert.Equal(new[] { false, true }, visibilityEdges);
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}
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[Fact]
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public void EffectProfile_SurvivesRebucketAndClearsWithLogicalTeardown()
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{
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const uint guid = 0x70000030u;
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var spatial = new GpuWorldState();
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spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
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spatial.AddLandblock(EmptyLandblock(0x0102FFFFu));
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var runtime = new LiveEntityRuntime(spatial, new RecordingResources());
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WorldSession.EntitySpawn spawn = Spawn(guid, 6, 1, 0x01010001u);
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runtime.RegisterLiveEntity(spawn);
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var profile = new EffectProfile();
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runtime.SetEffectProfile(guid, profile);
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runtime.MaterializeLiveEntity(
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guid,
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spawn.Position!.Value.LandblockId,
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id => Entity(id, guid));
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Assert.True(runtime.RebucketLiveEntity(guid, 0x01020001u));
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Assert.True(runtime.TryGetEffectProfile(guid, out var retained));
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Assert.Same(profile, retained);
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Assert.True(runtime.UnregisterLiveEntity(
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new DeleteObject.Parsed(guid, spawn.InstanceSequence),
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isLocalPlayer: false));
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Assert.False(runtime.TryGetEffectProfile(guid, out _));
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}
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[Fact]
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public void InitialChildCreate_PreservesParentEventQueuedForMissingChild()
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{
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const uint parentGuid = 0x70000020u;
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const uint childGuid = 0x70000021u;
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var runtime = new LiveEntityRuntime(new GpuWorldState(), new RecordingResources());
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runtime.RegisterLiveEntity(Spawn(parentGuid, 9, 1, 0x01010001u));
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runtime.ParentAttachments.Enqueue(new ParentEvent.Parsed(
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parentGuid, childGuid, 1, 2, 9, 5));
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ResolveParent(runtime, childGuid);
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runtime.RegisterLiveEntity(Spawn(childGuid, 3, 4, 0x01010001u));
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ResolveParent(runtime, childGuid);
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Assert.True(runtime.ParentAttachments.TryGetProjection(
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childGuid, out ParentAttachmentRelation relation));
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Assert.Equal(parentGuid, relation.ParentGuid);
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Assert.True(runtime.TryGetSnapshot(childGuid, out WorldSession.EntitySpawn child));
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Assert.Null(child.Position);
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}
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[Fact]
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public void InitialParentCreate_PreservesCreateObjectRelationWaitingForParent()
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{
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const uint parentGuid = 0x70000022u;
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const uint childGuid = 0x70000023u;
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var runtime = new LiveEntityRuntime(new GpuWorldState(), new RecordingResources());
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runtime.RegisterLiveEntity(Spawn(childGuid, 3, 4, 0x01010001u));
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runtime.ParentAttachments.AcceptCreateObjectRelation(new ParentAttachmentRelation(
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parentGuid, childGuid, 1, 2, 9, 4));
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runtime.RegisterLiveEntity(Spawn(parentGuid, 9, 1, 0x01010001u));
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Assert.True(runtime.ParentAttachments.TryGetProjection(
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childGuid, out ParentAttachmentRelation relation));
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Assert.Equal(parentGuid, relation.ParentGuid);
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}
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[Fact]
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public void SameGenerationCreate_DoesNotReconstructProjection()
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{
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var spatial = new GpuWorldState();
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spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
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var resources = new RecordingResources();
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var runtime = new LiveEntityRuntime(spatial, resources);
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WorldSession.EntitySpawn first = Spawn(0x70000002u, 4, 10, 0x01010001u);
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runtime.RegisterLiveEntity(first);
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WorldEntity original = runtime.MaterializeLiveEntity(
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first.Guid,
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first.Position!.Value.LandblockId,
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id => Entity(id, first.Guid))!;
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LiveEntityRegistrationResult refresh = runtime.RegisterLiveEntity(
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Spawn(first.Guid, 4, 11, 0x01010001u));
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WorldEntity retained = runtime.MaterializeLiveEntity(
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first.Guid,
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first.Position.Value.LandblockId,
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_ => throw new InvalidOperationException("same generation reconstructed"))!;
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Assert.False(refresh.LogicalRegistrationCreated);
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Assert.Same(original, retained);
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Assert.Equal(1, resources.RegisterCount);
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Assert.Equal(0, resources.UnregisterCount);
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}
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[Fact]
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public void NewGeneration_TearsDownExactlyOnceAndReusesNoLocalIdentity()
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{
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var spatial = new GpuWorldState();
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spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
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var resources = new RecordingResources();
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int runtimeTearDowns = 0;
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var runtime = new LiveEntityRuntime(
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spatial,
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resources,
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_ => runtimeTearDowns++);
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const uint guid = 0x70000003u;
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runtime.RegisterLiveEntity(Spawn(guid, 9, 1, 0x01010001u));
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WorldEntity old = runtime.MaterializeLiveEntity(
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guid, 0x01010001u, id => Entity(id, guid))!;
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LiveEntityRegistrationResult replacement = runtime.RegisterLiveEntity(
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Spawn(guid, 10, 1, 0x01010001u));
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WorldEntity current = runtime.MaterializeLiveEntity(
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guid, 0x01010001u, id => Entity(id, guid))!;
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Assert.True(replacement.ReplacedExistingGeneration);
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Assert.NotEqual(old.Id, current.Id);
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Assert.Equal(2, resources.RegisterCount);
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Assert.Equal(1, resources.UnregisterCount);
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Assert.Equal(1, runtimeTearDowns);
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Assert.Single(spatial.Entities);
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Assert.Same(current, spatial.Entities[0]);
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Assert.False(runtime.TryGetServerGuid(old.Id, out _));
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Assert.True(runtime.TryGetServerGuid(current.Id, out uint mapped));
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Assert.Equal(guid, mapped);
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}
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[Fact]
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public void AppearanceUpdate_MutatesSnapshotWithoutChangingIdentity()
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{
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var spatial = new GpuWorldState();
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spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
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var resources = new RecordingResources();
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var runtime = new LiveEntityRuntime(spatial, resources);
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WorldSession.EntitySpawn spawn = Spawn(0x70000004u, 2, 3, 0x01010001u);
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runtime.RegisterLiveEntity(spawn);
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WorldEntity entity = runtime.MaterializeLiveEntity(
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spawn.Guid, 0x01010001u, id => Entity(id, spawn.Guid))!;
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var update = new ObjDescEvent.Parsed(
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spawn.Guid,
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new CreateObject.ModelData(
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0x04000001u,
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Array.Empty<CreateObject.SubPaletteSwap>(),
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Array.Empty<CreateObject.TextureChange>(),
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Array.Empty<CreateObject.AnimPartChange>()),
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InstanceSequence: 2,
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ObjDescSequence: 2);
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Assert.True(runtime.TryApplyObjDesc(update, out _));
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Assert.True(runtime.TryGetRecord(spawn.Guid, out LiveEntityRecord record));
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Assert.Same(entity, record.WorldEntity);
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Assert.Equal((uint)0x04000001u, record.Snapshot.BasePaletteId);
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Assert.Equal(1, resources.RegisterCount);
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Assert.Equal(0, resources.UnregisterCount);
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}
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[Fact]
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public void DeleteAndGuidReuse_HaveSeparateLogicalLifetimes()
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{
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var spatial = new GpuWorldState();
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spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
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var resources = new RecordingResources();
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var runtime = new LiveEntityRuntime(spatial, resources);
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const uint guid = 0x70000005u;
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runtime.RegisterLiveEntity(Spawn(guid, 3, 1, 0x01010001u));
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WorldEntity first = runtime.MaterializeLiveEntity(
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guid, 0x01010001u, id => Entity(id, guid))!;
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Assert.True(runtime.UnregisterLiveEntity(
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new DeleteObject.Parsed(guid, 3),
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isLocalPlayer: false));
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Assert.Empty(spatial.Entities);
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Assert.False(runtime.TryGetRecord(guid, out _));
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runtime.RegisterLiveEntity(Spawn(guid, 3, 1, 0x01010001u));
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WorldEntity second = runtime.MaterializeLiveEntity(
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guid, 0x01010001u, id => Entity(id, guid))!;
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Assert.NotEqual(first.Id, second.Id);
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Assert.Equal(2, resources.RegisterCount);
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Assert.Equal(1, resources.UnregisterCount);
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}
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[Fact]
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public void AttachedProjection_RendersWithoutEnteringTopLevelWorldIndex()
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{
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var spatial = new GpuWorldState();
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spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
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var resources = new RecordingResources();
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var runtime = new LiveEntityRuntime(spatial, resources);
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WorldSession.EntitySpawn spawn = Spawn(0x70000006u, 3, 1, 0x01010001u);
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runtime.RegisterLiveEntity(spawn);
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WorldEntity attached = runtime.MaterializeLiveEntity(
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spawn.Guid,
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spawn.Position!.Value.LandblockId,
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id => Entity(id, spawn.Guid),
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LiveEntityProjectionKind.Attached)!;
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Assert.Single(spatial.Entities);
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Assert.Empty(runtime.WorldEntities);
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Assert.False(runtime.TryMarkWorldSpawnPublished(spawn.Guid));
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Assert.True(runtime.TryGetWorldEntity(spawn.Guid, out WorldEntity resolved));
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Assert.Same(attached, resolved);
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Assert.Equal(1, resources.RegisterCount);
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attached.IsAncestorDrawVisible = false;
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WorldEntity same = runtime.MaterializeLiveEntity(
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spawn.Guid,
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spawn.Position.Value.LandblockId,
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_ => throw new InvalidOperationException("attachment reconstructed"),
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LiveEntityProjectionKind.World)!;
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Assert.Same(attached, same);
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Assert.True(same.IsAncestorDrawVisible);
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Assert.Same(attached, Assert.Single(runtime.WorldEntities).Value);
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Assert.True(runtime.TryMarkWorldSpawnPublished(spawn.Guid));
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Assert.False(runtime.TryMarkWorldSpawnPublished(spawn.Guid));
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Assert.Equal(1, resources.RegisterCount);
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}
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[Fact]
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public void PendingToLoadedTransition_DoesNotReplayLogicalRegistration()
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{
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var spatial = new GpuWorldState();
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var resources = new RecordingResources();
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var runtime = new LiveEntityRuntime(spatial, resources);
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WorldSession.EntitySpawn spawn = Spawn(0x70000007u, 1, 1, 0x01020001u);
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runtime.RegisterLiveEntity(spawn);
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WorldEntity entity = runtime.MaterializeLiveEntity(
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spawn.Guid,
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spawn.Position!.Value.LandblockId,
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id => Entity(id, spawn.Guid))!;
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Assert.Empty(spatial.Entities);
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Assert.Equal(1, spatial.PendingLiveEntityCount);
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Assert.Equal(1, resources.RegisterCount);
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Assert.Empty(runtime.WorldEntities);
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Assert.Same(entity, Assert.Single(runtime.MaterializedWorldEntities).Value);
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spatial.AddLandblock(EmptyLandblock(0x0102FFFFu));
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Assert.Same(entity, Assert.Single(spatial.Entities));
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Assert.Same(entity, Assert.Single(runtime.WorldEntities).Value);
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Assert.True(runtime.RebucketLiveEntity(spawn.Guid, 0x01020001u));
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Assert.Same(entity, Assert.Single(spatial.Entities));
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Assert.Equal(1, resources.RegisterCount);
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Assert.Equal(0, resources.UnregisterCount);
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}
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[Fact]
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public void PendingProjection_RemainsCanonicalAcrossAuthoritativeUpdatesWithoutReregister()
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{
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const uint guid = 0x70000025u;
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var spatial = new GpuWorldState();
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var resources = new RecordingResources();
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var runtime = new LiveEntityRuntime(spatial, resources);
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WorldSession.EntitySpawn spawn = Spawn(guid, 2, 1, 0x01010001u);
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runtime.RegisterLiveEntity(spawn);
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WorldEntity entity = runtime.MaterializeLiveEntity(
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guid,
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spawn.Position!.Value.LandblockId,
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id => Entity(id, guid))!;
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Assert.Empty(runtime.WorldEntities);
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Assert.Same(entity, Assert.Single(runtime.MaterializedWorldEntities).Value);
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Assert.True(runtime.TryApplyVector(
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new VectorUpdate.Parsed(
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guid,
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new System.Numerics.Vector3(2f, 3f, 4f),
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System.Numerics.Vector3.Zero,
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spawn.InstanceSequence,
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2),
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out _));
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var positionUpdate = new WorldSession.EntityPositionUpdate(
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guid,
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new CreateObject.ServerPosition(
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0x01020001u, 20f, 30f, 6f, 1f, 0f, 0f, 0f),
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null,
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null,
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true,
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spawn.InstanceSequence,
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2,
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0,
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0);
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Assert.True(runtime.TryApplyPosition(
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positionUpdate,
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isLocalPlayer: false,
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forcePositionRotation: null,
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currentLocalVelocity: null,
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out PositionTimestampDisposition disposition,
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out WorldSession.EntitySpawn accepted,
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out _));
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Assert.Equal(PositionTimestampDisposition.Apply, disposition);
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Assert.True(runtime.RebucketLiveEntity(guid, accepted.Position!.Value.LandblockId));
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Assert.Empty(runtime.WorldEntities);
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Assert.Same(entity, Assert.Single(runtime.MaterializedWorldEntities).Value);
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Assert.Equal(1, resources.RegisterCount);
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Assert.Equal(0, resources.UnregisterCount);
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Assert.Equal(1, spatial.PendingLiveEntityCount);
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}
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[Fact]
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public void PickupLeaveWorld_PreservesOwnersButPausesRootUntilPositionReentry()
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{
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const uint guid = 0x70000026u;
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var spatial = new GpuWorldState();
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spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
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var resources = new RecordingResources();
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var runtime = new LiveEntityRuntime(spatial, resources);
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WorldSession.EntitySpawn spawn = Spawn(guid, 4, 10, 0x01010001u);
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runtime.RegisterLiveEntity(spawn);
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WorldEntity entity = runtime.MaterializeLiveEntity(
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guid,
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spawn.Position!.Value.LandblockId,
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id => Entity(id, guid))!;
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var animation = new AnimationRuntime(entity);
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runtime.SetAnimationRuntime(guid, animation);
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uint localId = entity.Id;
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Assert.True(runtime.TryMarkWorldSpawnPublished(guid));
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Assert.True(runtime.TryApplyPickup(
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new PickupEvent.Parsed(guid, spawn.InstanceSequence, 11),
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out _));
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Assert.True(runtime.WithdrawLiveEntityProjection(guid));
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Assert.True(runtime.TryGetRecord(guid, out LiveEntityRecord record));
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Assert.Equal(0u, record.FullCellId);
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Assert.Equal(0u, record.CanonicalLandblockId);
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Assert.False(runtime.ShouldAdvanceRootRuntime(guid));
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Assert.True(runtime.TryGetAnimationRuntime(localId, out var retainedAnimation));
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Assert.Same(animation, retainedAnimation);
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Assert.Equal(1, resources.RegisterCount);
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Assert.Equal(0, resources.UnregisterCount);
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var positionUpdate = new WorldSession.EntityPositionUpdate(
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guid,
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new CreateObject.ServerPosition(
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0x01010002u, 30f, 40f, 7f, 1f, 0f, 0f, 0f),
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null,
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null,
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true,
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spawn.InstanceSequence,
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12,
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0,
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0);
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Assert.True(runtime.TryApplyPosition(
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positionUpdate,
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isLocalPlayer: false,
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forcePositionRotation: null,
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currentLocalVelocity: null,
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out PositionTimestampDisposition disposition,
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out WorldSession.EntitySpawn accepted,
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out _));
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Assert.Equal(PositionTimestampDisposition.Apply, disposition);
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WorldEntity same = runtime.MaterializeLiveEntity(
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guid,
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accepted.Position!.Value.LandblockId,
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_ => throw new InvalidOperationException("re-entry reconstructed the projection"))!;
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Assert.Same(entity, same);
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Assert.Equal(localId, same.Id);
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Assert.False(runtime.TryMarkWorldSpawnPublished(guid));
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Assert.True(runtime.ShouldAdvanceRootRuntime(guid));
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Assert.Equal(0x01010002u, record.FullCellId);
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Assert.True(runtime.TryGetAnimationRuntime(localId, out retainedAnimation));
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Assert.Same(animation, retainedAnimation);
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Assert.Equal(1, resources.RegisterCount);
|
|
Assert.Equal(0, resources.UnregisterCount);
|
|
}
|
|
|
|
[Fact]
|
|
public void RootRuntimePausesWhilePendingOrFrozenAndResumesInVisibleCell()
|
|
{
|
|
const uint guid = 0x70000027u;
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var runtime = new LiveEntityRuntime(spatial, new RecordingResources());
|
|
WorldSession.EntitySpawn spawn = Spawn(guid, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(spawn);
|
|
runtime.MaterializeLiveEntity(
|
|
guid,
|
|
spawn.Position!.Value.LandblockId,
|
|
id => Entity(id, guid));
|
|
|
|
Assert.True(runtime.ShouldAdvanceRootRuntime(guid));
|
|
Assert.True(runtime.RebucketLiveEntity(guid, 0x02020001u));
|
|
Assert.False(runtime.ShouldAdvanceRootRuntime(guid));
|
|
|
|
spatial.AddLandblock(EmptyLandblock(0x0202FFFFu));
|
|
Assert.True(runtime.ShouldAdvanceRootRuntime(guid));
|
|
|
|
Assert.True(runtime.TryApplyState(
|
|
new SetState.Parsed(
|
|
guid,
|
|
(uint)(PhysicsStateFlags.ReportCollisions | PhysicsStateFlags.Frozen),
|
|
1,
|
|
2),
|
|
out _));
|
|
Assert.False(runtime.ShouldAdvanceRootRuntime(guid));
|
|
|
|
Assert.True(runtime.TryApplyState(
|
|
new SetState.Parsed(
|
|
guid,
|
|
(uint)PhysicsStateFlags.ReportCollisions,
|
|
1,
|
|
3),
|
|
out _));
|
|
Assert.True(runtime.ShouldAdvanceRootRuntime(guid));
|
|
}
|
|
|
|
[Fact]
|
|
public void PhysicsStateAndRemoteBodyStaySynchronizedAcrossEitherArrivalOrder()
|
|
{
|
|
const uint stateBeforeBindGuid = 0x70000037u;
|
|
const uint bindBeforeStateGuid = 0x70000038u;
|
|
var runtime = new LiveEntityRuntime(new GpuWorldState(), new RecordingResources());
|
|
runtime.RegisterLiveEntity(Spawn(stateBeforeBindGuid, 1, 1, 0x01010001u));
|
|
runtime.RegisterLiveEntity(Spawn(bindBeforeStateGuid, 1, 1, 0x01010001u));
|
|
|
|
PhysicsStateFlags firstState = PhysicsStateFlags.Hidden
|
|
| PhysicsStateFlags.Gravity
|
|
| PhysicsStateFlags.ReportCollisions;
|
|
Assert.True(runtime.TryApplyState(
|
|
new SetState.Parsed(stateBeforeBindGuid, (uint)firstState, 1, 2),
|
|
out _));
|
|
var lateBody = new RemoteMotionRuntime();
|
|
runtime.SetRemoteMotionRuntime(stateBeforeBindGuid, lateBody);
|
|
|
|
var earlyBody = new RemoteMotionRuntime();
|
|
runtime.SetRemoteMotionRuntime(bindBeforeStateGuid, earlyBody);
|
|
PhysicsStateFlags secondState = PhysicsStateFlags.Static
|
|
| PhysicsStateFlags.Ethereal
|
|
| PhysicsStateFlags.NoDraw;
|
|
Assert.True(runtime.TryApplyState(
|
|
new SetState.Parsed(bindBeforeStateGuid, (uint)secondState, 1, 2),
|
|
out _));
|
|
|
|
Assert.Equal((firstState & ~PhysicsStateFlags.ReportCollisions)
|
|
| PhysicsStateFlags.IgnoreCollisions,
|
|
lateBody.Body.State);
|
|
Assert.Equal(secondState, earlyBody.Body.State);
|
|
}
|
|
|
|
[Fact]
|
|
public void ParentDrivenChildNoDrawKeepsBoundBodyInCanonicalState()
|
|
{
|
|
const uint guid = 0x70000039u;
|
|
var runtime = new LiveEntityRuntime(new GpuWorldState(), new RecordingResources());
|
|
runtime.RegisterLiveEntity(Spawn(guid, 1, 1, 0x01010001u));
|
|
var remote = new RemoteMotionRuntime();
|
|
runtime.SetRemoteMotionRuntime(guid, remote);
|
|
|
|
Assert.True(runtime.SetAttachedChildNoDraw(guid, true));
|
|
Assert.True(remote.Body.State.HasFlag(PhysicsStateFlags.NoDraw));
|
|
|
|
Assert.True(runtime.SetAttachedChildNoDraw(guid, false));
|
|
Assert.False(remote.Body.State.HasFlag(PhysicsStateFlags.NoDraw));
|
|
}
|
|
|
|
[Fact]
|
|
public void InitiallyVisibleCreate_DoesNotManufactureUnHideTransition()
|
|
{
|
|
const uint guid = 0x70000040u;
|
|
var runtime = new LiveEntityRuntime(new GpuWorldState(), new RecordingResources());
|
|
|
|
runtime.RegisterLiveEntity(Spawn(guid, 1, 1, 0x01010001u));
|
|
|
|
Assert.True(runtime.TryGetRecord(guid, out LiveEntityRecord record));
|
|
Assert.True(record.TryDequeueStateTransition(out RetailPhysicsStateTransition transition));
|
|
Assert.Equal(RetailHiddenTransition.None, transition.HiddenTransition);
|
|
Assert.Equal(PhysicsStateFlags.ReportCollisions, record.FinalPhysicsState);
|
|
}
|
|
|
|
[Fact]
|
|
public void HiddenCreate_SuppressesMeshInteractionButRetainsNarrowObjectTick()
|
|
{
|
|
const uint guid = 0x70000041u;
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var runtime = new LiveEntityRuntime(spatial, new RecordingResources());
|
|
runtime.RegisterLiveEntity(Spawn(
|
|
guid,
|
|
1,
|
|
1,
|
|
0x01010001u,
|
|
PhysicsStateFlags.Hidden | PhysicsStateFlags.ReportCollisions));
|
|
WorldEntity entity = runtime.MaterializeLiveEntity(
|
|
guid,
|
|
0x01010001u,
|
|
id => Entity(id, guid))!;
|
|
|
|
Assert.False(entity.IsDrawVisible);
|
|
Assert.Empty(runtime.WorldEntities);
|
|
Assert.Same(entity, Assert.Single(runtime.MaterializedWorldEntities).Value);
|
|
Assert.Single(spatial.Entities);
|
|
Assert.True(runtime.ShouldAdvanceRootRuntime(guid));
|
|
Assert.True(runtime.TryGetRecord(guid, out LiveEntityRecord record));
|
|
Assert.Equal(PhysicsStateFlags.None,
|
|
record.FinalPhysicsState & PhysicsStateFlags.ReportCollisions);
|
|
Assert.NotEqual(PhysicsStateFlags.None,
|
|
record.FinalPhysicsState & PhysicsStateFlags.IgnoreCollisions);
|
|
}
|
|
|
|
[Fact]
|
|
public void HiddenThenVisibleState_RestoresSameMeshAndInteractionIdentity()
|
|
{
|
|
const uint guid = 0x70000042u;
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var runtime = new LiveEntityRuntime(spatial, new RecordingResources());
|
|
runtime.RegisterLiveEntity(Spawn(guid, 1, 1, 0x01010001u));
|
|
WorldEntity entity = runtime.MaterializeLiveEntity(
|
|
guid,
|
|
0x01010001u,
|
|
id => Entity(id, guid))!;
|
|
|
|
Assert.True(runtime.TryApplyState(new SetState.Parsed(
|
|
guid,
|
|
(uint)(PhysicsStateFlags.Hidden | PhysicsStateFlags.ReportCollisions),
|
|
1,
|
|
2), out _, out RetailPhysicsStateTransition hidden));
|
|
Assert.Equal(RetailHiddenTransition.BecameHidden, hidden.HiddenTransition);
|
|
Assert.False(entity.IsDrawVisible);
|
|
Assert.Empty(runtime.WorldEntities);
|
|
Assert.False(runtime.TryGetInteractionEligibleEntity(guid, out _));
|
|
|
|
Assert.True(runtime.TryApplyState(new SetState.Parsed(
|
|
guid,
|
|
0u,
|
|
1,
|
|
3), out _, out RetailPhysicsStateTransition visible));
|
|
Assert.Equal(RetailHiddenTransition.BecameVisible, visible.HiddenTransition);
|
|
Assert.True(entity.IsDrawVisible);
|
|
Assert.True(runtime.TryGetInteractionEligibleEntity(guid, out var eligible));
|
|
Assert.Same(entity, eligible);
|
|
Assert.Same(entity, Assert.Single(runtime.WorldEntities).Value);
|
|
Assert.Same(entity, Assert.Single(spatial.Entities));
|
|
}
|
|
|
|
[Fact]
|
|
public void PositionAfterPickup_RequiresTeleportHookEvenWithEqualTeleportStamp()
|
|
{
|
|
const uint guid = 0x70000043u;
|
|
var runtime = new LiveEntityRuntime(new GpuWorldState(), new RecordingResources());
|
|
WorldSession.EntitySpawn spawn = Spawn(guid, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(spawn);
|
|
Assert.True(runtime.TryApplyPickup(
|
|
new PickupEvent.Parsed(guid, 1, 2),
|
|
out _));
|
|
|
|
var update = new WorldSession.EntityPositionUpdate(
|
|
guid,
|
|
new CreateObject.ServerPosition(
|
|
0x01010002u, 12f, 13f, 5f, 1f, 0f, 0f, 0f),
|
|
null,
|
|
null,
|
|
true,
|
|
1,
|
|
3,
|
|
0,
|
|
0);
|
|
|
|
Assert.True(runtime.TryApplyPosition(
|
|
update,
|
|
isLocalPlayer: false,
|
|
forcePositionRotation: null,
|
|
currentLocalVelocity: null,
|
|
out PositionTimestampDisposition disposition,
|
|
out _,
|
|
out AcceptedPhysicsTimestamps timestamps));
|
|
Assert.Equal(PositionTimestampDisposition.Apply, disposition);
|
|
Assert.False(timestamps.TeleportAdvanced);
|
|
Assert.True(timestamps.TeleportHookRequired);
|
|
}
|
|
|
|
[Fact]
|
|
public void PositionFromPendingProjection_RequiresTeleportHookWithEqualTeleportStamp()
|
|
{
|
|
const uint guid = 0x70000044u;
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var runtime = new LiveEntityRuntime(spatial, new RecordingResources());
|
|
WorldSession.EntitySpawn spawn = Spawn(guid, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(spawn);
|
|
runtime.MaterializeLiveEntity(
|
|
guid,
|
|
0x01010001u,
|
|
id => Entity(id, guid));
|
|
spatial.RemoveLandblock(0x0101FFFFu);
|
|
|
|
Assert.True(runtime.TryApplyPosition(
|
|
new WorldSession.EntityPositionUpdate(
|
|
guid,
|
|
new CreateObject.ServerPosition(
|
|
0x01010002u, 12f, 13f, 5f, 1f, 0f, 0f, 0f),
|
|
null,
|
|
null,
|
|
true,
|
|
1,
|
|
2,
|
|
0,
|
|
0),
|
|
isLocalPlayer: false,
|
|
forcePositionRotation: null,
|
|
currentLocalVelocity: null,
|
|
out PositionTimestampDisposition disposition,
|
|
out _,
|
|
out AcceptedPhysicsTimestamps timestamps));
|
|
|
|
Assert.Equal(PositionTimestampDisposition.Apply, disposition);
|
|
Assert.False(timestamps.TeleportAdvanced);
|
|
Assert.True(timestamps.TeleportHookRequired);
|
|
}
|
|
|
|
[Fact]
|
|
public void LandblockUnload_HidesTopLevelViewAndReloadRestoresSameIdentity()
|
|
{
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var resources = new RecordingResources();
|
|
var runtime = new LiveEntityRuntime(spatial, resources);
|
|
WorldSession.EntitySpawn spawn = Spawn(0x70000024u, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(spawn);
|
|
WorldEntity entity = runtime.MaterializeLiveEntity(
|
|
spawn.Guid,
|
|
0x01010001u,
|
|
id => Entity(id, spawn.Guid))!;
|
|
|
|
spatial.RemoveLandblock(0x0101FFFFu);
|
|
|
|
Assert.Empty(runtime.WorldEntities);
|
|
Assert.True(runtime.TryGetRecord(spawn.Guid, out LiveEntityRecord record));
|
|
Assert.True(record.IsSpatiallyProjected);
|
|
Assert.False(record.IsSpatiallyVisible);
|
|
Assert.Equal(1, spatial.PendingLiveEntityCount);
|
|
Assert.Equal(1, resources.RegisterCount);
|
|
Assert.Equal(0, resources.UnregisterCount);
|
|
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
Assert.Same(entity, Assert.Single(runtime.WorldEntities).Value);
|
|
Assert.True(record.IsSpatiallyVisible);
|
|
Assert.Equal(1, resources.RegisterCount);
|
|
}
|
|
|
|
[Fact]
|
|
public void LoadedToPendingToLoaded_RemovesOldDrawSlotWithoutLogicalRecreate()
|
|
{
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var resources = new RecordingResources();
|
|
var runtime = new LiveEntityRuntime(spatial, resources);
|
|
WorldSession.EntitySpawn spawn = Spawn(0x70000009u, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(spawn);
|
|
WorldEntity entity = runtime.MaterializeLiveEntity(
|
|
spawn.Guid,
|
|
spawn.Position!.Value.LandblockId,
|
|
id => Entity(id, spawn.Guid))!;
|
|
|
|
Assert.Same(entity, Assert.Single(spatial.Entities));
|
|
Assert.True(runtime.RebucketLiveEntity(spawn.Guid, 0x01020001u));
|
|
Assert.Empty(spatial.Entities);
|
|
Assert.Equal(1, spatial.PendingLiveEntityCount);
|
|
Assert.Equal(1, resources.RegisterCount);
|
|
|
|
spatial.AddLandblock(EmptyLandblock(0x0102FFFFu));
|
|
Assert.Same(entity, Assert.Single(spatial.Entities));
|
|
Assert.Equal(1, resources.RegisterCount);
|
|
Assert.Equal(0, resources.UnregisterCount);
|
|
}
|
|
|
|
[Fact]
|
|
public void SessionClear_IsSymmetricAndIdempotent()
|
|
{
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var resources = new RecordingResources();
|
|
int runtimeTearDowns = 0;
|
|
var runtime = new LiveEntityRuntime(spatial, resources, _ => runtimeTearDowns++);
|
|
WorldSession.EntitySpawn spawn = Spawn(0x70000008u, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(spawn);
|
|
runtime.MaterializeLiveEntity(
|
|
spawn.Guid,
|
|
spawn.Position!.Value.LandblockId,
|
|
id => Entity(id, spawn.Guid));
|
|
|
|
runtime.Clear();
|
|
runtime.Clear();
|
|
|
|
Assert.Equal(0, runtime.Count);
|
|
Assert.Empty(runtime.WorldEntities);
|
|
Assert.Empty(spatial.Entities);
|
|
Assert.Equal(1, resources.RegisterCount);
|
|
Assert.Equal(1, resources.UnregisterCount);
|
|
Assert.Equal(1, runtimeTearDowns);
|
|
}
|
|
|
|
[Fact]
|
|
public void ResourceRegistrationFailure_RollsBackMaterializedIdentityAndSpatialState()
|
|
{
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var resources = new FailingRegisterResources();
|
|
var runtime = new LiveEntityRuntime(spatial, resources);
|
|
WorldSession.EntitySpawn spawn = Spawn(0x7000000Au, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(spawn);
|
|
|
|
Assert.Throws<InvalidOperationException>(() => runtime.MaterializeLiveEntity(
|
|
spawn.Guid,
|
|
spawn.Position!.Value.LandblockId,
|
|
id => Entity(id, spawn.Guid)));
|
|
|
|
Assert.True(runtime.TryGetRecord(spawn.Guid, out LiveEntityRecord record));
|
|
Assert.Null(record.WorldEntity);
|
|
Assert.Equal(0, runtime.MaterializedCount);
|
|
Assert.Empty(runtime.WorldEntities);
|
|
Assert.Empty(spatial.Entities);
|
|
Assert.Equal(1, resources.RegisterCount);
|
|
Assert.Equal(1, resources.UnregisterCount);
|
|
}
|
|
|
|
[Fact]
|
|
public void SessionClear_AttemptsEveryTeardownAndClearsIdentityWhenOneResourceFails()
|
|
{
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var resources = new FailingUnregisterResources(0x7000000Bu);
|
|
var runtime = new LiveEntityRuntime(spatial, resources);
|
|
foreach (uint guid in new[] { 0x7000000Bu, 0x7000000Cu })
|
|
{
|
|
WorldSession.EntitySpawn spawn = Spawn(guid, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(spawn);
|
|
runtime.MaterializeLiveEntity(
|
|
guid,
|
|
spawn.Position!.Value.LandblockId,
|
|
id => Entity(id, guid));
|
|
}
|
|
|
|
Assert.Throws<AggregateException>(() => runtime.Clear());
|
|
|
|
Assert.Equal(2, resources.UnregisterCount);
|
|
Assert.Equal(0, runtime.Count);
|
|
Assert.Equal(0, runtime.MaterializedCount);
|
|
Assert.Empty(runtime.WorldEntities);
|
|
Assert.Empty(spatial.Entities);
|
|
}
|
|
|
|
[Fact]
|
|
public void GenerationReplacement_InstallsNewRecordBeforeReportingOldCleanupFailure()
|
|
{
|
|
const uint guid = 0x7000000Eu;
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var resources = new FailingUnregisterResources(guid);
|
|
var runtime = new LiveEntityRuntime(spatial, resources);
|
|
WorldSession.EntitySpawn first = Spawn(guid, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(first);
|
|
runtime.MaterializeLiveEntity(
|
|
guid,
|
|
first.Position!.Value.LandblockId,
|
|
id => Entity(id, guid));
|
|
|
|
LiveEntityRegistrationResult replacement = runtime.RegisterLiveEntity(
|
|
Spawn(guid, 2, 1, 0x01010001u));
|
|
|
|
Assert.NotNull(replacement.PriorGenerationCleanupFailure);
|
|
Assert.True(runtime.TryGetRecord(guid, out LiveEntityRecord record));
|
|
Assert.Equal((ushort)2, record.Generation);
|
|
Assert.Null(record.WorldEntity);
|
|
WorldEntity installed = runtime.MaterializeLiveEntity(
|
|
guid,
|
|
0x01010001u,
|
|
id => Entity(id, guid))!;
|
|
Assert.Equal(guid, installed.ServerGuid);
|
|
Assert.Single(spatial.Entities);
|
|
}
|
|
|
|
[Fact]
|
|
public void CanonicalOnlyRebucket_DoesNotOverwriteAuthoritativeFullCell()
|
|
{
|
|
const uint guid = 0x7000000Fu;
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
spatial.AddLandblock(EmptyLandblock(0x0102FFFFu));
|
|
var runtime = new LiveEntityRuntime(spatial, new RecordingResources());
|
|
runtime.RegisterLiveEntity(Spawn(guid, 1, 1, 0x01010022u));
|
|
runtime.MaterializeLiveEntity(guid, 0x01010022u, id => Entity(id, guid));
|
|
|
|
runtime.RebucketLiveEntity(guid, 0x0102FFFFu);
|
|
|
|
Assert.True(runtime.TryGetRecord(guid, out LiveEntityRecord record));
|
|
Assert.Equal(0x01010022u, record.FullCellId);
|
|
Assert.Equal(0x0102FFFFu, record.CanonicalLandblockId);
|
|
|
|
runtime.RebucketLiveEntity(guid, 0x01020033u);
|
|
Assert.Equal(0x01020033u, record.FullCellId);
|
|
}
|
|
|
|
[Fact]
|
|
public void AttachedProjection_CrossesLandblocksWithoutChangingIdentityOrResources()
|
|
{
|
|
const uint guid = 0x70000010u;
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
spatial.AddLandblock(EmptyLandblock(0x0102FFFFu));
|
|
var resources = new RecordingResources();
|
|
var runtime = new LiveEntityRuntime(spatial, resources);
|
|
runtime.RegisterLiveEntity(Spawn(guid, 1, 1, 0x01010001u));
|
|
WorldEntity attached = runtime.MaterializeLiveEntity(
|
|
guid,
|
|
0x01010001u,
|
|
id => Entity(id, guid),
|
|
LiveEntityProjectionKind.Attached)!;
|
|
|
|
runtime.RebucketLiveEntity(guid, 0x01020001u);
|
|
|
|
Assert.Same(attached, Assert.Single(spatial.Entities));
|
|
Assert.Empty(runtime.WorldEntities);
|
|
Assert.Equal(1, resources.RegisterCount);
|
|
Assert.Equal(0, resources.UnregisterCount);
|
|
var destination = Assert.Single(
|
|
spatial.LandblockEntries,
|
|
entry => entry.LandblockId == 0x0102FFFFu);
|
|
Assert.Same(attached, Assert.Single(destination.Entities));
|
|
}
|
|
|
|
[Fact]
|
|
public void LocalIdAllocator_WrapsInsideLiveNamespaceWithoutReturningZero()
|
|
{
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var runtime = new LiveEntityRuntime(
|
|
spatial,
|
|
new RecordingResources(),
|
|
firstLocalEntityId: LiveEntityRuntime.LastLiveEntityId);
|
|
WorldSession.EntitySpawn first = Spawn(0x70000011u, 1, 1, 0x01010001u);
|
|
WorldSession.EntitySpawn second = Spawn(0x70000012u, 1, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(first);
|
|
runtime.RegisterLiveEntity(second);
|
|
|
|
WorldEntity firstEntity = runtime.MaterializeLiveEntity(
|
|
first.Guid, 0x01010001u, id => Entity(id, first.Guid))!;
|
|
WorldEntity secondEntity = runtime.MaterializeLiveEntity(
|
|
second.Guid, 0x01010001u, id => Entity(id, second.Guid))!;
|
|
|
|
Assert.Equal(LiveEntityRuntime.LastLiveEntityId, firstEntity.Id);
|
|
Assert.Equal(LiveEntityRuntime.FirstLiveEntityId, secondEntity.Id);
|
|
Assert.NotEqual(0u, secondEntity.Id);
|
|
Assert.True(runtime.TryGetLocalEntityId(second.Guid, out uint resolved));
|
|
Assert.Equal(secondEntity.Id, resolved);
|
|
Assert.Throws<ArgumentOutOfRangeException>(() => new LiveEntityRuntime(
|
|
new GpuWorldState(),
|
|
new RecordingResources(),
|
|
firstLocalEntityId: uint.MaxValue));
|
|
}
|
|
|
|
[Fact]
|
|
public void Delete_CleansLogicalRecordEvenWhenPreTeardownCallbackFails()
|
|
{
|
|
var spatial = new GpuWorldState();
|
|
spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
|
|
var resources = new RecordingResources();
|
|
var runtime = new LiveEntityRuntime(spatial, resources);
|
|
WorldSession.EntitySpawn spawn = Spawn(0x7000000Du, 4, 1, 0x01010001u);
|
|
runtime.RegisterLiveEntity(spawn);
|
|
runtime.MaterializeLiveEntity(
|
|
spawn.Guid,
|
|
spawn.Position!.Value.LandblockId,
|
|
id => Entity(id, spawn.Guid));
|
|
|
|
Assert.Throws<AggregateException>(() => runtime.UnregisterLiveEntity(
|
|
new DeleteObject.Parsed(spawn.Guid, spawn.InstanceSequence),
|
|
isLocalPlayer: false,
|
|
beforeTeardown: () => throw new InvalidOperationException("fixture callback failure")));
|
|
|
|
Assert.Equal(0, runtime.Count);
|
|
Assert.Empty(runtime.WorldEntities);
|
|
Assert.Empty(spatial.Entities);
|
|
Assert.Equal(1, resources.UnregisterCount);
|
|
}
|
|
|
|
private static LoadedLandblock EmptyLandblock(uint canonicalId) =>
|
|
new(canonicalId, new LandBlock(), Array.Empty<WorldEntity>());
|
|
|
|
private static void ResolveParent(LiveEntityRuntime runtime, uint childGuid) =>
|
|
runtime.ParentAttachments.Resolve(
|
|
childGuid,
|
|
guid => runtime.TryGetSnapshot(guid, out _),
|
|
guid => runtime.TryGetSnapshot(guid, out WorldSession.EntitySpawn spawn)
|
|
? spawn.InstanceSequence
|
|
: null,
|
|
update => runtime.TryApplyParent(update, out _));
|
|
|
|
private static WorldEntity Entity(uint id, uint guid) => new()
|
|
{
|
|
Id = id,
|
|
ServerGuid = guid,
|
|
SourceGfxObjOrSetupId = 0x02000001u,
|
|
Position = System.Numerics.Vector3.Zero,
|
|
Rotation = System.Numerics.Quaternion.Identity,
|
|
MeshRefs = Array.Empty<MeshRef>(),
|
|
};
|
|
|
|
private static WorldSession.EntitySpawn Spawn(
|
|
uint guid,
|
|
ushort instance,
|
|
ushort positionSequence,
|
|
uint cell,
|
|
PhysicsStateFlags state = PhysicsStateFlags.ReportCollisions)
|
|
{
|
|
var position = new CreateObject.ServerPosition(
|
|
cell, 10f, 10f, 5f, 1f, 0f, 0f, 0f);
|
|
var timestamps = new PhysicsTimestamps(
|
|
positionSequence, 1, 1, 1, 0, 1, 0, 1, instance);
|
|
var physics = new PhysicsSpawnData(
|
|
RawState: (uint)state,
|
|
Position: position,
|
|
Movement: null,
|
|
AnimationFrame: null,
|
|
SetupTableId: 0x02000001u,
|
|
MotionTableId: 0x09000001u,
|
|
SoundTableId: null,
|
|
PhysicsScriptTableId: null,
|
|
Parent: null,
|
|
Children: null,
|
|
Scale: null,
|
|
Friction: null,
|
|
Elasticity: null,
|
|
Translucency: null,
|
|
Velocity: null,
|
|
Acceleration: null,
|
|
AngularVelocity: null,
|
|
DefaultScriptType: null,
|
|
DefaultScriptIntensity: null,
|
|
Timestamps: timestamps);
|
|
return new WorldSession.EntitySpawn(
|
|
guid,
|
|
position,
|
|
0x02000001u,
|
|
Array.Empty<CreateObject.AnimPartChange>(),
|
|
Array.Empty<CreateObject.TextureChange>(),
|
|
Array.Empty<CreateObject.SubPaletteSwap>(),
|
|
null,
|
|
null,
|
|
"fixture",
|
|
null,
|
|
null,
|
|
0x09000001u,
|
|
PhysicsState: (uint)state,
|
|
InstanceSequence: instance,
|
|
MovementSequence: 1,
|
|
ServerControlSequence: 1,
|
|
PositionSequence: positionSequence,
|
|
Physics: physics);
|
|
}
|
|
}
|