Make animations work in the options screen

internal/ui/widget.go

@@ -30,7 +30,7 @@ type Widget struct {
 	disabledImage *ebiten.Image
 
 	// These are expected to have the same dimensions as the Bounds
-	hoverAnimation []*ebiten.Image
+	hoverAnimation animation
 	hoverState     bool
 
 	// FIXME: We assume right mouse button isn't needed here
@@ -38,7 +38,7 @@ type Widget struct {
 	mouseButtonDownImage *ebiten.Image
 	mouseButtonState     bool
 
-	path   []int
+	path   string
 	record *menus.Record
 	sprite *assetstore.Sprite
 
@@ -97,8 +97,8 @@ func (w *Widget) Image(aniStep int) (*ebiten.Image, error) {
 		return w.mouseButtonDownImage, nil
 	}
 
-	if w.hoverState && len(w.hoverAnimation) > 0 {
-		return w.hoverAnimation[(aniStep)%len(w.hoverAnimation)], nil
+	if w.hoverState && w.hoverAnimation != nil {
+		return w.hoverAnimation.image(aniStep), nil
 	}
 
 	if w.valueToImage != nil {