package main import "github.com/hajimehoshi/ebiten/v2" type Game struct{} func (g *Game) Update() error { return nil } func (g *Game) Draw(screen *ebiten.Image) { } func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) { return 320, 240 } func main() { ebiten.SetWindowSize(640, 480) ebiten.SetWindowTitle("Age of Empire") if err := ebiten.RunGame(&Game{}); err != nil { panic(err) } }