I'm rendering billboards using map:

<LPDIRECT3DTEXTURE9, vector<DWORD>*> mapTexture;

I'm iterating through the map to render billboards with the same texture so I can draw multiple billboard using the same texture with one draw call.

When the emitter die, I set m_Dead to true in the emitter class, now I want to remove the dead emitters from the particles manager.

So I use:

void ParticleManager::RemoveEmitter(DWORD EMITTER_ID)
{
    if (emitters.size() > EMITTER_ID)
    {
        vector<DWORD> *CurrentIDS = mapTexture[emitters[EMITTER_ID]->texture];
        if (CurrentIDS != NULL)
        {
             CurrentIDS->erase(std::remove(CurrentIDS->begin(), CurrentIDS->end(), EMITTER_ID), CurrentIDS->end());
             mapTexture[emitters[EMITTER_ID]->texture] = CurrentIDS;
        }

        emitters.erase(emitters.begin() + EMITTER_ID);
        }
}

if (emitters.size() > EMITTER_ID)

If I did that, the emitters will never get removed.

mapTexture[emitters[EMITTER_ID]->texture] = CurrentIDS;

If I changed this line:

CurrentIDS->erase(std::remove(CurrentIDS->begin(), CurrentIDS->end(), EMITTER_ID), CurrentIDS->end());

To:

CurrentIDS.clear();

I don't get out of range exception, but of course that will be a problem because I will be removing all the emitters, instead of the one that I want.

Erase invalidates all iterators if i recall correctly.

Yes, I figured out that myself and resolved the problem :)

I had to use a pointer to the emitter instead of the emitter Id.

Thank you,