package presenter import "github.com/hajimehoshi/ebiten" const ( screenWidth = 320 screenHeight = 240 ) type GameEngine struct { keys []ebiten.Key } func (g *GameEngine) Update(*ebiten.Image) error { return nil } func (g *GameEngine) Draw(screen *ebiten.Image) { } func (g *GameEngine) Layout(outsideWidth, outsideHeight int) (int, int) { return screenWidth, screenHeight }