Function getSpatialIndexOffset

src/OpenLoco/src/Entities/EntityManager.cpp:132–148

    }

    constexpr size_t getSpatialIndexOffset(const World::Pos2& loc)
    {
        if (loc.x == Location::null)
        {
            return kEntitySpatialIndexNull;
        }

        const auto tileX = std::abs(loc.x) / World::kTileSize;
        const auto tileY = std::abs(loc.y) / World::kTileSize;

        if (tileX >= World::kMapPitch || tileY >= World::kMapPitch)
        {
            return kEntitySpatialIndexNull;
        }

        return (World::kMapPitch * tileX) + tileY;
    }

    EntityId firstQuadrantId(const World::Pos2& loc)
    {