Question

the below class spits out around 20 errors, but if I comment out the vector bullets it seems to be all fine. Am I missing some obvious error?

#include <vector>
#include "SDL.h"
#include "Bullet.h"

#ifndef GAMEDATA_H
#define GAMEDATA_H

class GameData
{
public:
    GameData();
    ~GameData();
    GameData(const GameData& data);
    GameData& operator=(const GameData* rhs);

    vector<Bullet> bullets;

    SDL_Surface* shipimage;
    SDL_Surface* bulletimage;
};

#endif

Answer 1

vector is inside namespace std. Modify you bullets declaration to:

std::vector<Bullet> bullets;