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

namespace VoxelEngine.World.Streaming;

// Job dispatched to an IJobExecutor. For a fresh load, ExistingChunk is null
// and the worker generates + applies diff + meshes. For a remesh-only job,
// ExistingChunk holds the chunk and the worker only meshes (no generation).
internal sealed record ChunkJob(
    Vector3i Pos,
    Chunk.Chunk? ExistingChunk,
    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);