private void initializeGameworld(ContentHolder contentHolder)
{
playerObject = new Player(contentHolder.texturePlayer, contentHolder.texturePlayerTurret, 100, 100, Vector2.Zero, 100, 100);
// The following should (and will, eventually) be loaded by reading a file generated by an editor,
// so this is temp, testing etc
rock[0] = new Collidable(contentHolder.textureRock01, 150, 300, Vector2.Zero);
rock[1] = new Collidable(contentHolder.textureRock02, -250, -330, Vector2.Zero);
rock[2] = new Collidable(contentHolder.textureRock01, 500, 300, Vector2.Zero);
rock[3] = new Collidable(contentHolder.textureRock02, -100, 250, Vector2.Zero);
}