acdream/tests/AcDream.App.Tests/Physics/LiveEntityCollisionBuilderTests.cs
Erik 69a2ca0c6d refactor(world): extract live projection mechanics
Move appearance rebinding, collision construction, default-pose resolution, local shadow ownership, and exact leave-world presentation into focused owners. Preserve retail parent ordering with staged validation, committed recovery, recursive attached-subtree withdrawal, and retryable exact teardown across parent, pickup, position, unwield, and pose-loss edges.

Co-Authored-By: OpenAI Codex <codex@openai.com>
2026-07-21 16:17:03 +02:00

358 lines
13 KiB
C#

using System.Numerics;
using AcDream.App.Physics;
using AcDream.App.World;
using AcDream.Core.Items;
using AcDream.Core.Net;
using AcDream.Core.Net.Messages;
using AcDream.Core.Physics;
using AcDream.Core.World;
using DatReaderWriter.DBObjs;
namespace AcDream.App.Tests.Physics;
public sealed class LiveEntityCollisionBuilderTests
{
private const uint Guid = 0x70000100u;
private const uint Cell = 0x01010001u;
[Fact]
public void EffectivePartResolution_IsSetupAndVisualOptionIndependent()
{
uint[] resolved = LiveEntityCollisionBuilder.ResolveEffectivePartIdentities(
[0x01001000u, 0x01002000u],
id => id == 0x01001000u ? 0x01001001u : id);
Assert.Equal([0x01001001u, 0x01002000u], resolved);
}
[Fact]
public void RadiusFallback_UsesExactStateFlagsScaleAndFullSeedCell()
{
var setup = new Setup { Radius = 0.75f, Height = 2.5f };
WorldSession.EntitySpawn spawn = Spawn(
scale: 2f,
itemType: (uint)ItemType.Creature,
descriptionFlags: 0x28u);
var record = new LiveEntityRecord(spawn)
{
FinalPhysicsState = PhysicsStateFlags.Hidden | PhysicsStateFlags.Static,
};
WorldEntity entity = Entity();
record.WorldEntity = entity;
var builder = Builder();
LiveEntityCollisionRegistration registration = Assert.IsType<LiveEntityCollisionRegistration>(
builder.Build(entity, setup, Array.Empty<uint>(), spawn, record, new Vector3(192f, -192f, 0f)));
ShadowShape shape = Assert.Single(registration.Shapes);
Assert.Equal(ShadowCollisionType.Cylinder, shape.CollisionType);
Assert.Equal(1.5f, shape.Radius);
Assert.Equal(5f, shape.CylHeight);
Assert.Equal((uint)record.FinalPhysicsState, registration.State);
Assert.True(registration.Flags.HasFlag(EntityCollisionFlags.HasWeenie));
Assert.True(registration.Flags.HasFlag(EntityCollisionFlags.IsCreature));
Assert.True(registration.Flags.HasFlag(EntityCollisionFlags.IsPlayer));
Assert.True(registration.Flags.HasFlag(EntityCollisionFlags.IsPK));
Assert.Equal(Cell, registration.LandblockId);
Assert.Equal(Cell, registration.SeedCellId);
Assert.Equal((192f, -192f), (registration.WorldOffsetX, registration.WorldOffsetY));
}
[Fact]
public void BspOnlyPart_UsesRealScaledPhysicsBoundingRadius()
{
const uint part = 0x0100ABCDu;
var setup = new Setup();
setup.Parts.Add(part);
WorldSession.EntitySpawn spawn = Spawn(scale: 1.5f);
var record = new LiveEntityRecord(spawn);
WorldEntity entity = Entity();
record.WorldEntity = entity;
var builder = new LiveEntityCollisionBuilder(
id => id == part,
id => id == part ? 3f : null,
PoseResolver());
LiveEntityCollisionRegistration registration = Assert.IsType<LiveEntityCollisionRegistration>(
builder.Build(entity, setup, [part], spawn, record, Vector3.Zero));
ShadowShape shape = Assert.Single(registration.Shapes);
Assert.Equal(ShadowCollisionType.BSP, shape.CollisionType);
Assert.Equal(4.5f, shape.Radius);
Assert.Equal(part, shape.GfxObjId);
}
[Fact]
public void EffectiveReplacementWithoutPhysicsBsp_RemovesBasePartCollision()
{
const uint basePart = 0x0100AB01u;
const uint replacement = 0x0100AB02u;
var setup = new Setup();
setup.Parts.Add(basePart);
WorldSession.EntitySpawn spawn = Spawn(scale: 1f);
var record = new LiveEntityRecord(spawn);
WorldEntity entity = Entity();
record.WorldEntity = entity;
var builder = new LiveEntityCollisionBuilder(
id => id == basePart,
_ => 1f,
PoseResolver());
Assert.Null(builder.Build(
entity,
setup,
[replacement],
spawn,
record,
Vector3.Zero));
}
[Fact]
public void EffectiveReplacementWithPhysicsBsp_AddsReplacementCollision()
{
const uint basePart = 0x0100AB11u;
const uint replacement = 0x0100AB12u;
var setup = new Setup();
setup.Parts.Add(basePart);
WorldSession.EntitySpawn spawn = Spawn(scale: 1f);
var record = new LiveEntityRecord(spawn);
WorldEntity entity = Entity();
record.WorldEntity = entity;
var builder = new LiveEntityCollisionBuilder(
id => id == replacement,
id => id == replacement ? 2.25f : null,
PoseResolver());
LiveEntityCollisionRegistration registration =
Assert.IsType<LiveEntityCollisionRegistration>(builder.Build(
entity,
setup,
[replacement],
spawn,
record,
Vector3.Zero));
ShadowShape shape = Assert.Single(registration.Shapes);
Assert.Equal(replacement, shape.GfxObjId);
Assert.Equal(2.25f, shape.Radius);
}
[Fact]
public void ReconcileAppearance_VisibleReplacementWithoutBspRemovesOldPayload()
{
const uint basePart = 0x0100AC01u;
const uint replacement = 0x0100AC02u;
var setup = new Setup();
setup.Parts.Add(basePart);
WorldSession.EntitySpawn spawn = Spawn(scale: 1f);
var record = new LiveEntityRecord(spawn);
WorldEntity entity = Entity();
record.WorldEntity = entity;
var builder = new LiveEntityCollisionBuilder(
id => id == basePart,
_ => 1f,
PoseResolver());
LiveEntityCollisionRegistration initial =
Assert.IsType<LiveEntityCollisionRegistration>(builder.Build(
entity, setup, [basePart], spawn, record, Vector3.Zero));
var registry = new ShadowObjectRegistry();
LiveEntityCollisionBuilder.Register(registry, initial);
LiveEntityCollisionRegistration? changed = builder.Build(
entity, setup, [replacement], spawn, record, Vector3.Zero,
retainEmptyPayload: true);
LiveEntityCollisionBuilder.ReconcileAppearance(
registry, entity.Id, changed, suspendIfNew: false);
Assert.Equal(1, registry.RetainedRegistrationCount);
Assert.DoesNotContain(
registry.GetObjectsInCell(Cell),
entry => entry.EntityId == entity.Id);
}
[Fact]
public void ReconcileAppearance_SuspendedReplacementRetainsNewPayloadUntilRestore()
{
const uint basePart = 0x0100AC11u;
const uint replacement = 0x0100AC12u;
var setup = new Setup();
setup.Parts.Add(basePart);
WorldSession.EntitySpawn spawn = Spawn(scale: 1f);
var record = new LiveEntityRecord(spawn);
WorldEntity entity = Entity();
record.WorldEntity = entity;
var builder = new LiveEntityCollisionBuilder(
id => id == basePart || id == replacement,
_ => 1f,
PoseResolver());
LiveEntityCollisionRegistration initial =
Assert.IsType<LiveEntityCollisionRegistration>(builder.Build(
entity, setup, [basePart], spawn, record, Vector3.Zero));
var registry = new ShadowObjectRegistry();
LiveEntityCollisionBuilder.Register(registry, initial);
Assert.True(registry.Suspend(entity.Id));
LiveEntityCollisionRegistration changed =
Assert.IsType<LiveEntityCollisionRegistration>(builder.Build(
entity, setup, [replacement], spawn, record, Vector3.Zero));
LiveEntityCollisionBuilder.ReconcileAppearance(
registry, entity.Id, changed, suspendIfNew: true);
Assert.Equal(1, registry.RetainedRegistrationCount);
Assert.Equal(1, registry.SuspendedRegistrationCount);
Assert.DoesNotContain(
registry.GetObjectsInCell(Cell),
entry => entry.EntityId == entity.Id);
LiveEntityCollisionRegistration empty =
Assert.IsType<LiveEntityCollisionRegistration>(builder.Build(
entity,
setup,
[0x0100AC13u],
spawn,
record,
Vector3.Zero,
retainEmptyPayload: true));
LiveEntityCollisionBuilder.ReconcileAppearance(
registry, entity.Id, empty, suspendIfNew: true);
LiveEntityCollisionBuilder.ReconcileAppearance(
registry, entity.Id, changed, suspendIfNew: true);
Assert.Equal(1, registry.RetainedRegistrationCount);
Assert.Equal(1, registry.SuspendedRegistrationCount);
registry.UpdatePosition(
entity.Id,
entity.Position,
entity.Rotation,
worldOffsetX: 0f,
worldOffsetY: 0f,
landblockId: Cell,
seedCellId: Cell);
ShadowEntry restored = Assert.Single(
registry.GetObjectsInCell(Cell),
entry => entry.EntityId == entity.Id);
Assert.Equal(replacement, restored.GfxObjId);
Assert.Equal(0, registry.SuspendedRegistrationCount);
}
[Fact]
public void ReconcileAppearance_ExistingMembershipDoesNotDependOnNewFlood()
{
const uint basePart = 0x0100AC21u;
const uint replacement = 0x0100AC22u;
var setup = new Setup();
setup.Parts.Add(basePart);
WorldSession.EntitySpawn spawn = Spawn(scale: 1f);
var record = new LiveEntityRecord(spawn);
WorldEntity entity = Entity();
record.WorldEntity = entity;
var builder = new LiveEntityCollisionBuilder(
id => id == basePart || id == replacement,
_ => 1f,
PoseResolver());
LiveEntityCollisionRegistration initial =
Assert.IsType<LiveEntityCollisionRegistration>(builder.Build(
entity, setup, [basePart], spawn, record, Vector3.Zero));
var registry = new ShadowObjectRegistry();
LiveEntityCollisionBuilder.Register(registry, initial);
LiveEntityCollisionRegistration changed =
Assert.IsType<LiveEntityCollisionRegistration>(builder.Build(
entity, setup, [replacement], spawn, record, Vector3.Zero))
with
{
LandblockId = 0u,
SeedCellId = 0u,
};
LiveEntityCollisionBuilder.ReconcileAppearance(
registry, entity.Id, changed, suspendIfNew: false);
ShadowEntry entry = Assert.Single(
registry.GetObjectsInCell(Cell),
candidate => candidate.EntityId == entity.Id);
Assert.Equal(replacement, entry.GfxObjId);
}
[Fact]
public void ShapelessSetup_ProducesNoRegistration()
{
WorldSession.EntitySpawn spawn = Spawn(scale: 1f);
var record = new LiveEntityRecord(spawn);
WorldEntity entity = Entity();
record.WorldEntity = entity;
Assert.Null(Builder().Build(
entity,
new Setup(),
Array.Empty<uint>(),
spawn,
record,
Vector3.Zero));
}
[Fact]
public void Build_RejectsDifferentRecordIncarnation()
{
WorldSession.EntitySpawn spawn = Spawn(scale: 1f);
var expected = new LiveEntityRecord(spawn);
var other = new LiveEntityRecord(spawn with { InstanceSequence = 2 });
WorldEntity entity = Entity();
expected.WorldEntity = entity;
other.WorldEntity = entity;
Assert.Throws<InvalidOperationException>(() => Builder().Build(
entity,
new Setup { Radius = 1f },
Array.Empty<uint>(),
spawn,
other,
Vector3.Zero));
}
private static LiveEntityCollisionBuilder Builder() => new(
_ => false,
_ => null,
PoseResolver());
private static LiveEntityDefaultPoseResolver PoseResolver() => new(
_ => null,
new NullAnimationLoader(),
dumpMotion: false);
private static WorldEntity Entity() => new()
{
Id = 101u,
ServerGuid = Guid,
SourceGfxObjOrSetupId = 0x02000100u,
Position = new Vector3(4f, 5f, 6f),
Rotation = Quaternion.Identity,
MeshRefs = Array.Empty<MeshRef>(),
ParentCellId = Cell,
};
private static WorldSession.EntitySpawn Spawn(
float scale,
uint? itemType = null,
uint? descriptionFlags = null) =>
new(
Guid,
new CreateObject.ServerPosition(Cell, 4f, 5f, 6f, 1f, 0f, 0f, 0f),
0x02000100u,
Array.Empty<CreateObject.AnimPartChange>(),
Array.Empty<CreateObject.TextureChange>(),
Array.Empty<CreateObject.SubPaletteSwap>(),
BasePaletteId: null,
ObjScale: scale,
Name: "collision fixture",
ItemType: itemType,
MotionState: null,
MotionTableId: null,
PhysicsState: 0u,
ObjectDescriptionFlags: descriptionFlags,
InstanceSequence: 1);
private sealed class NullAnimationLoader : IAnimationLoader
{
public Animation? LoadAnimation(uint id) => null;
}
}