Method removeUnusedSpriteSheets

core/2d/SpriteFrameCache.cpp:181–206

}

void SpriteFrameCache::removeUnusedSpriteSheets()
{
    std::vector<uint64_t> willRemoveSpriteSheetFileNames;
    for (auto&& it : _spriteSheets)
    {
        bool isUsed = false;
        for (auto&& frame : it.second->frames)
        {
            auto spriteFrame = findFrame(frame);
            if (spriteFrame && spriteFrame->getReferenceCount() > 1)
            {
                isUsed = true;
                break;
            }
        }

        if (!isUsed)
            willRemoveSpriteSheetFileNames.push_back(it.first);
    }

    for (auto& sheetId : willRemoveSpriteSheetFileNames)
    {
        AXLOGD("SpriteFrameCache: removing unused sprite sheet file : {}", sheetId);
        removeSpriteSheet(sheetId);
    }
}

void SpriteFrameCache::removeSpriteFrameByName(std::string_view name)
{