func (button *Button) Draw(rend *sdl.Renderer) {
w := button.Pos.W
state := button.State
if state > 2 {
state = 2
}
rend.Copy(button.texture, &sdl.Rect{int32(state) * w, 0, button.Pos.W, button.Pos.H}, &button.Pos)
}
func (label *Label) Draw(rend *sdl.Renderer) {
pos := sdl.Rect{label.Pos.X + (label.Pos.W-label.texwidth)/2, label.Pos.Y + (label.Pos.H-label.texheight)/2, label.texwidth, label.texheight}
rend.Copy(label.texture, nil, &pos)
}