riversong-code-showcase/Source/Riversong/Game/WorldGen/ChunkGenerators/CropsGrassTileMask.cs

using Unity.Collections;

namespace DanieleMarotta.RiversongCodeShowcase
{
    public struct CropsGrassTileMask : IGrassTileMask
    {
        public NativeArray<FertilityMapValue> Fertility;

        public bool CanGenerateAtTile(int tileIndex)
        {
            return Fertility[tileIndex].MaxFertility > 0;
        }
    }
}