func createMainWindow() {
var err error
var mainWindow *sdl.Window
gc := gamecontext.GContext
gc.WindowWidth = 800
gc.WindowHeight = 600
mainWindow, err = sdl.CreateWindow("Eggdrop!", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, int(gc.WindowWidth), int(gc.WindowHeight), sdl.WINDOW_SHOWN)
if err != nil {
panic(err)
}
gc.MainSurface, err = mainWindow.GetSurface()
if err != nil {
panic(err)
}
gc.PixelFormatEnum, err = mainWindow.GetPixelFormat()
if err != nil {
panic(err)
}
gc.PixelFormat, err = sdl.AllocFormat(uint(gc.PixelFormatEnum)) // TODO why the cast? Seems to work?
if err != nil {
panic(err)
}
gc.MainWindow = mainWindow
}