Question

I am reading contents of a .dat file and populating an unordered_map this way:

bool FileManager::LoadSkillList(LPCSTR name)
{
    int counter = 0;
    std::ifstream myFile(name, std::ios::binary | std::ios::out );
    if(myFile.fail())
    {
        myFile.close();
        return false;
    }
    char skill[0x12C];
    ZeroMemory(skill,0x12C);
    char buff[100];
    while(counter != TOTAL_SKILLS)
    {
        myFile.read(skill,0x12C);

        if(myFile.gcount() < 1) continue;

        auto skillBlock = (SkillInfo*)&skill;

#ifdef _DEBUG
        char* skillName = skillBlock->szSkillName;
        int delay = skillBlock->delayTime;

        wsprintf(buff,"Skill Name: %s - Delay: %d\r\n",skillName,delay);
        Log(buff);
#endif

        this->skills.insert(std::make_pair(counter,skillBlock));

        if(myFile.gcount() > 0) counter++;
        myFile.seekg( counter * 0x12C);
    }
#ifdef _DEBUG
    Log("Skill count: %d\r\n",(int)this->skills.size());
#endif
    myFile.close();

    return (counter>0)?true:false;
}

When I try to retrieve the map values inside the LoadSkillList method, it works fine. But I have another method in FileManager class, that is accessed by other class, in order to retrieve the unordered_map value.

for(int skillNumber = 0; skillNumber < TOTAL_SKILLS; skillNumber++)
{
    auto fileDelay = fManager->getDelay(skillNumber);
}
// ...

int FileManager::getDelay(int n)
{
    auto block = this->skills.at(n);
    return block->delayTime;
} 

But somehow, my app crashs inside that method. (I am building an dll, and I checked it out with a debugger. )

Any clue of what is happening? Already tried with std::array, std::map with no success, both crash on the same method.

Answer 1

I solved my problem doing this:

declared skills as static.
Adding values to the unordered_map like this:

        FileManager::skills.insert(std::make_pair(counter, new SkillInfo()));
    memcpy(this->skills[counter],skillBlock,sizeof(SkillInfo));

Retrieving the desired value like this:

int FileManager::getDelay(int n)
{
auto block = FileManager::skills[n];
return block->delayTime;
}