@Override
public void initStatesList(GameContainer arg0) throws SlickException {
this.addState(new MainMenuState(MAIN_MENU_STATE));
this.addState(new SectorState(SECTOR_STATE));
this.addState(new ResearchState(RESEARCH_STATE));
this.addState(new PlanetState(PLANET_STATE));
this.enterState(MAIN_MENU_STATE);
}