acdream/src/AcDream.App/Rendering/Wb/ActiveParticleEmitter.cs

using System.Numerics;

namespace AcDream.App.Rendering.Wb {
    public class ActiveParticleEmitter {
        public ParticleEmitterRenderer Renderer { get; }
        public uint PartIndex { get; }
        public Matrix4x4 LocalOffset { get; }

        // Store reference info instead of struct copy.
        // ParentLandblock was ObjectLandblock (WB type) — typed as object? in Phase O-T7
        // to remove the WorldBuilder project reference; no consumer reads it.
        public object? ParentLandblock { get; set; }
        // ParentInstanceId was WorldBuilder.Shared.Models.ObjectId? — erased to ulong? in T7;
        // the field is stored but never read by any consumer in our codebase.
        public ulong? ParentInstanceId { get; set; }

        public ActiveParticleEmitter(ParticleEmitterRenderer renderer, uint partIndex, Matrix4x4 localOffset, object? parentLandblock = null, ulong? parentInstanceId = null) {
            Renderer = renderer;
            PartIndex = partIndex;
            LocalOffset = localOffset;
            ParentLandblock = parentLandblock;
            ParentInstanceId = parentInstanceId;
        }

        public void Update(float deltaTime, Matrix4x4 parentTransform) {
            Renderer.ParentTransform = parentTransform;
            Renderer.LocalOffset = LocalOffset;
            Renderer.Update(deltaTime);
        }

        public void Render(ParticleBatcher batcher) {
            Renderer.Render(batcher);
        }

        public void Dispose() {
            Renderer.Dispose();
        }
    }
}