Display overlay text in the UI

We still have fonts to do, so this is very ugly, but it at least shows
*something* on the screen now.

internal/ui/noninteractive.go

@@ -3,13 +3,16 @@ package ui
 import (
 	"image"
 
+	"github.com/hajimehoshi/ebiten"
+	"github.com/hajimehoshi/ebiten/ebitenutil"
+
 	"code.ur.gs/lupine/ordoor/internal/menus"
 )
 
 func init() {
 	registerBuilder(menus.TypeStatic, registerStatic)
 	registerBuilder(menus.TypeHypertext, registerHypertext)
-	registerBuilder(menus.TypeOverlay, registerStatic)
+	registerBuilder(menus.TypeOverlay, registerOverlay)
 	registerBuilder(menus.TypeAnimationSample, registerAnimation)
 }
 
@@ -21,6 +24,9 @@ type noninteractive struct {
 	frames animation
 	rect   image.Rectangle
 
+	// Some non-interactives, e.g., overlays, are an image + text to be shown
+	textImg *ebiten.Image
+
 	hoverImpl
 }
 
@@ -38,7 +44,7 @@ func registerStatic(d *Driver, r *menus.Record) error {
 
 	ni := &noninteractive{
 		frames:    animation{sprite.Image},
-		hoverImpl: hoverImpl{text: r.Desc},
+		hoverImpl: hoverImpl{text: r.Text},
 		rect:      sprite.Rect,
 	}
 
@@ -55,8 +61,7 @@ func registerHypertext(d *Driver, r *menus.Record) error {
 	}
 
 	ni := &noninteractive{
-		frames:    nil,
-		hoverImpl: hoverImpl{text: r.Desc},
+		hoverImpl: hoverImpl{text: r.Text},
 		rect:      sprite.Rect,
 	}
 
@@ -65,6 +70,34 @@ func registerHypertext(d *Driver, r *menus.Record) error {
 	return nil
 }
 
+// An overlay is a static image + some text that needs to be rendered
+func registerOverlay(d *Driver, r *menus.Record) error {
+	sprite, err := d.menu.Sprite(r.Share)
+	if err != nil {
+		return err
+	}
+
+	ni := &noninteractive{
+		frames: animation{sprite.Image},
+		rect:   sprite.Rect,
+	}
+
+	if r.Text != "" {
+		// FIXME: we should be rendering the text much more nicely than this
+		textImg, err := ebiten.NewImage(sprite.Rect.Dx(), sprite.Rect.Dy(), ebiten.FilterDefault)
+		if err != nil {
+			return err
+		}
+
+		ebitenutil.DebugPrint(textImg, r.Text)
+		ni.textImg = textImg
+	}
+
+	d.paintables = append(d.paintables, ni)
+
+	return nil
+}
+
 // An animation is a non-interactive element that displays something in a loop
 func registerAnimation(d *Driver, r *menus.Record) error {
 	sprite, err := d.menu.Sprite(r.SpriteId[0])
@@ -79,7 +112,7 @@ func registerAnimation(d *Driver, r *menus.Record) error {
 
 	ani := &noninteractive{
 		frames:    animation(frames),
-		hoverImpl: hoverImpl{text: r.Desc},
+		hoverImpl: hoverImpl{text: r.Text},
 		rect:      sprite.Rect,
 	}
 
@@ -94,5 +127,11 @@ func (n *noninteractive) bounds() image.Rectangle {
 }
 
 func (n *noninteractive) regions(tick int) []region {
-	return oneRegion(n.bounds().Min, n.frames.image(tick))
+	out := oneRegion(n.bounds().Min, n.frames.image(tick))
+
+	if n.textImg != nil {
+		out = append(out, oneRegion(n.bounds().Min, n.textImg)...)
+	}
+
+	return out
 }