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SDL problem

Ch1156 (1970)
Ok so im trying to make a basic 2d game engine but when i put a piece of code in the class it givs me errors i dont know how to fix, the errors arent even inside my code, what do i do.

Engine.cpp

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#include "Thunder_Engine.h"
#include <SDL.h>

Thunder_Engine::Thunder_Engine()
{
    //ctor
}

Thunder_Engine::~Thunder_Engine()
{
    //dtor
}

inline void Thunder_Engine::Controls()
{
    Uint8 *keyStates = SDL_GetKeyState(0);

    //Basic WASD Controls
    if(keyStates[SDLK_w])
    {
        Player_Offset.y -= 1;
    }
    if(keyStates[SDLK_a])
    {
        Player_Offset.x -= 1;
    }
    if(keyStates[SDLK_s])
    {
        Player_Offset.y += 1;
    }
    if(keyStates[SDLK_d])
    {
        Player_Offset.y += 1;
    }

    //Side scroller jump controls
    //These need to be fixed
    /*
    if(keyStates[SDLK_SPACE])
    {
        offset.y -= 2;
    }
    if(offset.y < 570)
    {
        offset.y += gravity;
    }
    if(offset.y < 500)
    {
        offset.y += gravity;
        keyStates[SDLK_SPACE] = SDL_RELEASED;
    }
    */

}

inline void Thunder_Engine::Collision()
{

}

inline void Thunder_Engine::Gravity()
{

}

inline void Thunder_Engine::Sound()
{
    //None for now
}

inline void Thunder_Engine::Images()
{
    //Loading Player Image
    Player = SDL_LoadBMP("Images/Placeholder.bmp");

    Player_Offset.x = 50;
    Player_Offset.y = 50;
}

int Thunder_Engine::Game()
{
    SDL_Init(SDL_INIT_EVERYTHING);

    SDL_Surface *MainScreen;
    MainScreen = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE);
    Images();

    while(running)
    {
        start = SDL_GetTicks();
        while(SDL_PollEvent(&event))
        {
            switch(event.type)
            {
                case SDL_QUIT:
                    running = false;
                    break;
            }
        }
        SDL_FillRect(MainScreen, NULL, NULL);
        SDL_BlitSurface(Player, NULL, MainScreen, &Player_Offset);
        SDL_Flip(MainScreen);

        if(1000/FPS>SDL_GetTicks()-start)
        {
            SDL_Delay(1000/FPS-(SDL_GetTicks()-start));
        }
    }

    SDL_FreeSurface(Player);
    SDL_Quit();

    return 0;
}


Engine.h

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#ifndef THUNDER_ENGINE_H
#define THUNDER_ENGINE_H
#include <SDL.h>

class Thunder_Engine
{
    public:
        Thunder_Engine();
        virtual ~Thunder_Engine();
        void Controls();
        void Collision();
        void Gravity();
        void Sound();
        void Images();
        int Game();

    private:
        bool running;
        float gravity;
        int FPS;
        SDL_Event event;
        Uint32 start;
        SDL_Surface *Player;
        SDL_Rect Player_Offset; //Problem

};

#endif // THUNDER_ENGINE_H


errors

C:\Users\Chay\Desktop\Thunder Engine\Thunder_Engine.cpp||In member function 'int Thunder_Engine::Game()':|
C:\Users\Chay\Desktop\Thunder Engine\Thunder_Engine.cpp|103|warning: comparison between signed and unsigned integer expressions|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_strlcpy'|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_strlcat'|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_strlcpy'|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_strlcat'|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_strlcpy'|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_GetError'|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_SetModuleHandle'|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_main'|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_getenv'|
C:\Program Files (x86)\CodeBlocks\MinGW\lib\libSDLmain.a(SDL_win32_main.o):SDL_win32_main.c|| undefined reference to `SDL_strlcpy'|
||=== Build finished: 10 errors, 1 warnings ===|
Last edited on
LB (13399)
Could you copy and paste the exact errors you are getting?
Lynx876 (742)
Just going to throw it out there, lol.

Main has to look like:
int main( int argc, char* args[] )

For SDL to work. (:
Ch1156 (1970)
I have that but it still gives me thiose errors.
Ch1156 (1970)
bump
Peter87 (11178)
How are you linking?
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