using OpenTK.Mathematics;
using VoxelEngine.World.Chunk;

namespace VoxelEngine.World.Streaming;

// Job dispatched to an IJobExecutor for a fresh chunk load. The worker
// generates the chunk, applies any modification diff, and meshes the result.
// Remesh-only jobs are dispatched separately by DispatchRemesh and capture
// their state via closures, so they do not use this record.
internal sealed record ChunkJob(
    Vector3i Pos,
    NeighborSnapshots Neighbors,
    IReadOnlyDictionary<int, ushort>? Diff);

// Posted by the worker back to the main thread via a ConcurrentQueue.
internal sealed record ChunkJobResult(
    Vector3i Pos,
    Chunk.Chunk? Chunk,
    float[]? Mesh,
    Exception? Error,
    bool IsRemeshOnly);