Function IsspatterChanged

plugins/remotefortressreader/remotefortressreader.cpp:707–740

std::map<DFCoord, uint16_t> spatterHashes;

bool IsspatterChanged(DFCoord pos)
{
    df::map_block * block = Maps::getBlock(pos);
    std::vector<df::block_square_event_material_spatterst *> materials;
#if DF_VERSION_INT > 34011
    std::vector<df::block_square_event_item_spatterst *> items;
    if (!Maps::SortBlockEvents(block, NULL, NULL, &materials, NULL, NULL, NULL, &items))
        return false;
#else
    if (!Maps::SortBlockEvents(block, NULL, NULL, &materials, NULL, NULL))
        return false;
#endif

    uint16_t hash = 0;

    for (size_t i = 0; i < materials.size(); i++)
    {
        auto mat = materials[i];
        hash ^= fletcher16((uint8_t*)mat, sizeof(df::block_square_event_material_spatterst));
    }
#if DF_VERSION_INT > 34011
    for (size_t i = 0; i < items.size(); i++)
    {
        auto item = items[i];
        hash ^= fletcher16((uint8_t*)item, sizeof(df::block_square_event_item_spatterst));
    }
#endif
    if (spatterHashes[pos] != hash)
    {
        spatterHashes[pos] = hash;
        return true;
    }
    return false;
}

std::map<int, uint16_t> itemHashes;