namespace AcDream.App.Rendering.Wb;

/// <summary>
/// Starts CPU mesh extraction after the completed EnvCell build has been
/// published and its geometry ids have acquired render ownership. This order
/// lets ObjectMeshManager cancel queued work as soon as a landblock leaves the
/// current streaming generation; stale portal destinations never keep decoder
/// jobs or surface lists alive.
/// </summary>
public static class EnvCellMeshPreparationScheduler
{
    public static void Schedule(
        EnvCellLandblockBuild build,
        ObjectMeshManager meshManager)
    {
        var scheduled = new HashSet<ulong>();
        foreach (var shell in build.Shells)
        {
            if (!scheduled.Add(shell.GeometryId))
                continue;
            _ = meshManager.PrepareEnvCellGeomMeshDataAsync(
                shell.GeometryId,
                shell.EnvironmentId,
                shell.CellStructure,
                new List<ushort>(shell.Surfaces));
        }
    }
}