a71db90310
Server sends UpdateMotion whenever an entity's motion state changes: NPCs starting a walk cycle, creatures switching to a combat stance, doors opening, a player waving, etc. Phase 6.1-6.4 already handles rendering different (stance, forward-command) pairs for the INITIAL CreateObject, but without this message NPCs freeze in whatever pose they spawned with and never transition to walking/fighting. Added UpdateMotion.TryParse with the same ServerMotionState the CreateObject path uses, reached via a slightly different outer layout (guid + instance seq + header'd MovementData; the MovementData starts with the 8-byte sequence/autonomous header this time rather than being preceded by a length field). Only the (stance, forward- command) pair is extracted — same subset CreateObject grabs. WorldSession dispatches MotionUpdated(guid, state) when a 0xF74C body parses successfully. The App-side wiring (guid→entity lookup and AnimatedEntity cycle swap) is intentionally deferred to a separate commit because it touches GameWindow which is currently being edited by the Phase 9.1 translucent-pass work. 89 Core.Net tests (was 83, +6 for UpdateMotion coverage). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
75 lines
2.6 KiB
C#
75 lines
2.6 KiB
C#
using DatReaderWriter.Enums;
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namespace AcDream.Core.Meshing;
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/// <summary>
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/// Categorizes how a sub-mesh should be composited into the frame. Determined
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/// from the Surface.Type flags on the AC dat surface that owns the sub-mesh.
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/// </summary>
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public enum TranslucencyKind
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{
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/// <summary>Standard opaque. Depth write + test, no blend.</summary>
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Opaque = 0,
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/// <summary>
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/// Alpha-keyed (clip-map). Treated as opaque for sorting; the fragment
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/// shader discards low-alpha fragments. Matches the current rendering of
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/// doors, windows, and vegetation.
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/// </summary>
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ClipMap = 1,
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/// <summary>
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/// Standard alpha blend: src*a + dst*(1-a).
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/// Depth-write off, depth-test on. Used for semi-transparent glass,
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/// water decals, and flame alpha surfaces.
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/// </summary>
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AlphaBlend = 2,
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/// <summary>
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/// Additive blend: src*a + dst. Depth-write off, depth-test on.
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/// Used for portal swirls, magical glows, and particle effects.
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/// </summary>
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Additive = 3,
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/// <summary>
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/// Inverted alpha blend: src*(1-a) + dst*a. Rare but present in
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/// the AC dat files.
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/// </summary>
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InvAlpha = 4,
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}
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public static class TranslucencyKindExtensions
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{
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// Priority order (highest wins):
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// 1. Additive — SurfaceType.Additive (0x10000)
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// 2. InvAlpha — SurfaceType.InvAlpha (0x200)
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// 3. AlphaBlend — SurfaceType.Alpha (0x100) OR SurfaceType.Translucent (0x10)
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// 4. ClipMap — SurfaceType.Base1ClipMap (0x04)
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// 5. Opaque — everything else
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//
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// Note: ACViewer groups Base1ClipMap with the alpha-draw bucket (AlphaSurfaceTypes),
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// but acdream keeps its existing alpha-discard approach for clip-map surfaces
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// (they render opaque with per-fragment discard) and introduces a separate
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// translucent pass only for the genuinely blended surface types.
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/// <summary>
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/// Maps a <see cref="SurfaceType"/> flags value to the correct
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/// <see cref="TranslucencyKind"/> for the two-pass render split.
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/// </summary>
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public static TranslucencyKind FromSurfaceType(SurfaceType type)
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{
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if ((type & SurfaceType.Additive) != 0)
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return TranslucencyKind.Additive;
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if ((type & SurfaceType.InvAlpha) != 0)
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return TranslucencyKind.InvAlpha;
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if ((type & (SurfaceType.Alpha | SurfaceType.Translucent)) != 0)
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return TranslucencyKind.AlphaBlend;
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if ((type & SurfaceType.Base1ClipMap) != 0)
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return TranslucencyKind.ClipMap;
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return TranslucencyKind.Opaque;
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}
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}
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