d8a64f3316
## Summary Removes the dated `DynamicJson` JSON helper and migrates spawner JSON (de)serialization to a polymorphic `record SpawnerDto` hierarchy. `DynamicJson` was the last remaining consumer (regions moved off it in #1400). The key correctness improvement: **System.Text.Json deserializes plain DTO records, never a live `Item`.** Previously, deserializing directly into an `Item` meant STJ constructed world-registered objects *before* the data was validated — a malformed/hand-edited spawn file could leave orphaned spawner Items in the world save. Now a parse failure is GC-only; `dto.ToSpawner()` constructs the spawner only from a fully-validated DTO and self-cleans on failure. ## What changed - **New:** `SpawnerDto` (abstract) + `SpawnerDataDto` / `RegionSpawnerDto` / `ProximitySpawnerDto`, each marked with a reusable `[JsonDiscoverableType]` opt-in attribute. Auto-discovered at the `Configure` phase — no manual registration list (avoids the regions `Register<T>()` footgun), open to custom spawner subtypes. - **Symmetric mapping:** `BaseSpawner.ToDto()` (export) ⇄ `SpawnerDto.ToSpawner()` (import). `ToSpawner()` deletes-and-rethrows on any failure, so the importer can never orphan an Item. - **`SpawnerJsonSerializer`** wires `$type` polymorphism on the `SpawnerDto` root with loud collision/constructibility validation. - **Import/export commands** rewired to the typed DTO path (reflection `FindTypeByName`/`CreateInstance` removed). - **Data migration:** the 109 `Distribution/Data/Spawns/**` files moved from `"type"`→`"$type"` and legacy `homeRange`→`spawnBounds`. The runtime still *reads* legacy `homeRange` for external files. The `homeRange→spawnBounds` formula is proven equivalent to the runtime conversion (`BoundsEquivalenceTests`, hr=0/1/3/7). - **Deleted:** `Projects/Server/Json/DynamicJson.cs`. Sparse export output matches the legacy `ToJson` (nullable DTO properties + `WhenWritingNull`). Binary world-save serialization is untouched. ## Tests - DTO round-trip per spawner type; sparse-default omission; legacy `homeRange` read; export/import file round-trip. - `Import_MalformedFile_LeaksNoWorldItems` — proves a mid-array parse failure constructs zero world Items. - `AllSpawnFilesLoadTests` — every migrated spawn file deserializes and builds. - Duplicate-discriminator validation. - UOContent.Tests 485/485, Server.Tests 710/710, build clean. ## Follow-up (not in this PR) `Rectangle3DConverter.Write` (in `Projects/Server/`) omits `z1/z2` when `Start.Z == -128`, so a future server-side export of a `homeRange`-style spawner round-trips depth 256→255. Pre-existing and out of scope here (Server change); the migrated data reads correctly. Worth a separate small converter PR.
42 lines
1.3 KiB
C#
42 lines
1.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using Server;
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using Server.Engines.Spawners;
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using Server.Json;
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using Xunit;
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namespace UOContent.Tests.Engines.Spawners.Json;
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[Collection("Sequential UOContent Tests")]
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public class ExportImportFileTests
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{
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[Fact]
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public void Serialize_ThenDeserialize_File_PreservesSpawner()
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{
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Spawner original = null;
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BaseSpawner rebuilt = null;
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var path = Path.GetTempFileName();
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try
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{
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original = new Spawner(3, TimeSpan.FromMinutes(4), TimeSpan.FromMinutes(8), 1,
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new Rectangle3D(200, 200, 0, 9, 9, 0), "Tanner");
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original.MoveToWorld(new Point3D(204, 204, 0), Map.Felucca);
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JsonConfig.Serialize(path, new List<SpawnerDto> { original.ToDto() }, SpawnerJsonSerializer.Options);
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var dtos = JsonConfig.Deserialize<List<SpawnerDto>>(path, SpawnerJsonSerializer.Options);
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rebuilt = Assert.Single(dtos).ToSpawner();
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var s = Assert.IsType<Spawner>(rebuilt);
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Assert.Equal(3, s.Count);
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Assert.Equal(1, s.Team);
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Assert.Equal(new Rectangle3D(200, 200, 0, 9, 9, 0), s.SpawnBounds);
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}
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finally
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{
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rebuilt?.Delete();
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original?.Delete();
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File.Delete(path);
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}
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}
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}
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