[SFML] Object being removed from vector unintetionally

[MrBob1337]

I have a problem with an object "disappearing" from the game world. I've narrowed it down to some odd memory manipulation that's causing it to be removed from a vector of all the currently active objects, but I can't find what would do this. I've tried very hard in the debugger, but I still can't find anything, so I'm trying one more time before totally ripping all of my hard-worked code and starting again.

Object:

void Object::Update()
{
	//float etime = CalcAverageTick(app->GetRenderWindow()->GetFrameTime());
	cx = GetSprite().GetCenter().x;
	cy = GetSprite().GetCenter().y;
	std::vector<Object*> * list = app->GetCollides(this);
	int i;
	bool movex = true;
	bool movey = true;
	// = new Object(app);
	float ox;
	float oy;
	//std::cout << "Started checking...";
	//if(list == NULL)
	//{
		//std::cout << "List is null!\n";
	//}
	for(i = 0; i < list->size();i++)
	{
	    std::cout << "In loop!...";
		//Object * list->at(i) = list->at(i);
		ox = list->at(i)->GetSprite().GetCenter().x;
		oy = list->at(i)->GetSprite().GetCenter().y;
		if(list->at(i)->GetDensity() > this->GetDensity())//more dense
		{
			std::cout << "It is more dense.";
			if(this->velocity.x > 0)// going right
			{
				if(ox > cx)//gonna hit muthafucker
				{
					movex = false;
				}
			}
			if(this->velocity.x < 0)//going left
			{
				if(ox < cx)
				{
					movex = false;
				}
			}
			if(this->velocity.y > 0)//going up
			{
				if(oy > cy)
				{
					movey = false;
				}
			}
			if(this->velocity.y < 0)//going down
			{
				if(oy < cy)
				{
					movey = false;
				}
			}
		}
		//list->at(i) = 0;
		//delete list->at(i);
	}
	if(movex == true)
	{
		this->Object::spr.SetX(this->Object::spr.GetPosition().x + (this->velocity.x));
	}
	if(movey == true)
	{
		this->Object::spr.SetY(this->Object::spr.GetPosition().y + (this->velocity.y));
	}
	//[TESTCODE]
	if(this->is_visible == false)
	{
		std::cout << "hiding";
	}
	OnCollide();
	//delete list;
	list = 0;
}

bool Object::IsKeyDown(sf::Key::Code keycode)
{
	if(input->IsKeyDown(keycode))
	{
		return true;
	}
	else
	{
		return false;
	}
}

void Object::OnCollide()
{
	int i;
	std::vector<Object*> * vec = app->GetCollides(this);
	for(i = 0; i < vec->size(); i++)
	{
		if(vec->at(i))//is it not null
		{
			if(vec->at(i) != this)
			{
				this->AddVelocity( -(vec->at(i)->GetFriction()), -(vec->at(i)->GetFriction()));//Controls velocity through friction
				if(vec->at(i)->GetName() == "ent_cool")
				{
				//TESTCODE
				//Add one for each interaction you want
				}
			}
		}
		else
		{
			//Nothing is colliding
			return;
		}
	}
	delete vec;
	//std::cout << "Updated Object::Update!\n";
	//vec = NULL;
}

(I'm posting stripped-down versions, bear with me)

Application:

bool Application::IsColliding(Object * obj1, Object * obj2)
{
	if(collision.PixelPerfectTest(obj1->GetSprite(),obj2->GetSprite()))
	{
		return true;
	}
	else
	{
		return false;
	}
}

std::vector<Object*> * Application::GetCollides(Object * obj)
{
	unsigned int i = 0;
	std::vector<Object*> * ObjectCollides = new std::vector<Object*>;
	//ObjectCollides = new std::vector<Object*>;
	for(i = 0; i < objmap.size(); i++) //placeholder [TESTCODE]
	{
		try
		{
		if(objmap.empty() != true)//is the whole thing empty?
		{
			if(objmap.at(i))//is it empty?
			{
				if(objmap.at(i) != obj)
				{
				if(collision.PixelPerfectTest(obj->GetSprite(),objmap.at(i)->GetSprite()))
				{
					ObjectCollides->push_back(objmap.at(i));
					std::cout << "found something\n";
				}
				}
				else
				{
					//std::cout << "Was the object itself!\n";
				}
				continue;
			}
			else //objmap's done
			{
				break;
			}
		}
		else //empty, also due to stupidty
		{
			break;
		}
		}
		catch(...)
		{	
			GetLogger()->AddToFile("Some error was encountered.");
			std::cout << "Some Error was encountered.\n";
		}
	}

	return ObjectCollides;
	//delete ObjectCollides;
}

void Application::AddObject(Object * obj)
{
	objmap.push_back(obj);
}

bool Application::ObjAtPos(float x, float y,Object * checked)
{
	/*//[TODO]: Make this more efficent
	//Right now, it creates an object
	//Fix this faggotry at once
	Object checker(x,y,this,"data/cool.tga");
	//checker.SetVisible(false);
	//checker.GetSprite().Resize(xsize,ysize);
	std::vector<Object*> * vec0 = this->GetCollides(&checker);
	if(vec0->empty() == false)
	{
		vec = vec0;
		std::cout << "Not Empty.\n";
		return false;
	}
	if(vec0->empty() == true)
	{
		std::cout << "Empty.\n";
		return true;
	}*/
	//Object checker(x,y,this,"data/cool.tga");
	//checker.SetVisible(false);
	int i = 0;
	sf::IntRect rect;
	for(i=0;i < objmap.size();i++)
	{
		if(objmap.at(i) != checked)
		{
		rect = collision.GetAABB(objmap.at(i)->GetSprite());
		if(rect.Contains(x,y))
		{
			std::cout << "It does contain!\n";
			return true;
		}
		}
	}
	return false;

}

void Application::Update()
{
	//this->logger.AddToFile("Updated.");
	sf::Event * event_u = new sf::Event;
	//std::cout << "Cool.\n";
	//sf::Event & event_u = u_event
	while(GetRenderWindow()->GetEvent(*event_u))
	{
		//this->logger.AddToFile("Getting Event!\n");
		if(event_u->Type == sf::Event::Closed)
		{
			GetRenderWindow()->Close();
			//this->logger.AddToFile("Render Window closing.");
		}
	}
	//this->logger.AddToFile("Done Getting Event\n");
	//update all object
	unsigned int i;
	for(i = 0; i < objmap.size(); i++)
	{
		objmap.at(i)->Update();
		std::cout << objmap.at(i)->GetName();
		//std::cout << "Updated an object!\n";
	}
	//std::cout << "Done Updating Objects\n";
	//this->logger.AddToFile("Done updating objects.\n");
	//std::cout << "Updated objects!\n" ;
	//if(i == objmap.size())
	//{
		//Draw();
		//return;
	//}
	Draw();
	//std::cout << "Drawing!\n";
	this->logger.WriteFile();
	//std::cout << "Returning!\n";
	return;
	delete event_u;
}

void Application::Draw()
{
	GetRenderWindow()->Clear();
	unsigned int i;
	for(i = 0; i < objmap.size(); i++)
	{	
		if(objmap.at(i)->Visible() == true)
		{
			GetRenderWindow()->Draw(objmap.at(i)->GetSprite());
		}
		else
		{
			continue;
		}
	}
	//if(i = objmap.size())
	//{
		//break;
	//}
	GetRenderWindow()->Display();
	return;
}

That's all I can think of that helps. I've worked on this long and hard, and I'm rather worn.

[editline]
Please do not complain about "code-slap"; I can't see how else to do this.