restructure domain-presenter relation

presenter/presenter.go

@@ -7,18 +7,22 @@ import (
 	"github.com/hajimehoshi/ebiten"
 )
 
+type DomainInterface interface {
+	Init()
+}
+
 type Presenter struct {
-	Context domain.Context
+	Context  domain.Context
+	Domain   DomainInterface
+	Keyboard Keyboard
 }
 
 func (p Presenter) Init() {
 	ebiten.SetWindowSize(screenWidth*2, screenHeight*2)
 	ebiten.SetWindowTitle("Game")
 	if err := ebiten.RunGame(&GameEngine{
-		Context: p.Context,
-		Keyboard: Keyboard{
-			KeyMap: CreateDefaultKeyMap(),
-		},
+		Context:  p.Context,
+		Keyboard: p.Keyboard,
 	}); err != nil {
 		log.Fatal(err)
 	}