sprite/sheet

engine/sprite.go

@@ -24,10 +24,9 @@ func init() {
 type Sprite struct {
 	ID
 	Actor
-	FrameSize   image.Point
 	FrameOffset image.Point
 	Hidden
-	Src ImageRef
+	Sheet Sheet
 	ZOrder
 
 	anim *Anim
@@ -43,18 +42,14 @@ func (s *Sprite) Draw(screen *ebiten.Image, opts ebiten.DrawImageOptions) {
 	geom.Concat(opts.GeoM)
 	opts.GeoM = geom
 
-	frame := s.anim.CurrentFrame()
-	src := s.Src.Image()
-	w, _ := src.Size()
-	sp := image.Pt((frame*s.FrameSize.X)%w, ((frame*s.FrameSize.X)/w)*s.FrameSize.Y)
-
-	screen.DrawImage(src.SubImage(image.Rectangle{sp, sp.Add(s.FrameSize)}).(*ebiten.Image), &opts)
+	src := s.Sheet.SubImage(s.anim.CurrentFrame())
+	screen.DrawImage(src, &opts)
 }
 
 func (s *Sprite) Scan() []interface{} {
 	return []interface{}{
 		&s.Actor,
-		&s.Src,
+		&s.Sheet,
 	}
 }
 

main.go

@@ -18,7 +18,7 @@ func main() {
 	ebiten.SetWindowSize(640, 480)
 	ebiten.SetWindowTitle("TODO")
 
-	if true {
+	if false {
 		writeLevel1()
 	}
 
@@ -140,11 +140,13 @@ func writeLevel1() {
 					},
 					ZOrder:      3,
 					FrameOffset: image.Pt(-1, 0),
-					FrameSize:   image.Pt(10, 16),
+					Sheet: engine.Sheet{
+						CellSize: image.Pt(10, 16),
 						Src:      engine.ImageRef{Path: "assets/aw.png"},
 					},
 				},
 			},
+		},
 	}
 
 	if err := engine.SaveGobz(level1, "game/assets/level1.gobz"); err != nil {