1 files changed, 47 insertions, 6 deletions
diff --git a/go/ui/hand.go b/go/ui/hand.go
index b07d177b..5421f6fb 100644
--- a/go/ui/hand.go
+++ b/go/ui/hand.go
@@ -6,6 +6,8 @@ import (
 	"github.com/hajimehoshi/ebiten/v2"
 	"muhq.space/muhqs-game/go/assets"
 	"muhq.space/muhqs-game/go/game"
+
+	"golang.org/x/exp/slices"
 )
 
 type HandCard struct {
@@ -14,13 +16,24 @@ type HandCard struct {
 
 type HandView struct {
 	WidgetBase
-	hand      *game.Hand
-	cardWidth float64
-	scale     float64
+	hand          *game.Hand
+	cardWidth     float64
+	cardHeight    float64
+	scale         float64
+	bottomAligned bool
+	highlights    []*game.Card
 }
 
-func NewHandView(x, y, width, height int, h *game.Hand) *HandView {
-	hv := &HandView{NewWidgetBase(x, y, width, height), h, 0, 0}
+func NewHandView(x, y, width, height int, h *game.Hand, bottomAligned bool) *HandView {
+	hv := &HandView{
+		WidgetBase:    NewWidgetBase(x, y, width, height),
+		hand:          h,
+		cardWidth:     0,
+		cardHeight:    0,
+		scale:         0,
+		bottomAligned: bottomAligned,
+		highlights:    []*game.Card{},
+	}
 	hv.renderImpl = func() *ebiten.Image { return hv.render() }
 	return hv
 }
@@ -44,11 +57,22 @@ func (hv *HandView) render() *ebiten.Image {
 				hv.scale = y_scale
 			}
 			hv.cardWidth = float64(b.Dx()) * hv.scale
+			hv.cardHeight = float64(b.Dy()) * hv.scale
+		}
+
+		yOffset := 0.0
+		if hv.bottomAligned {
+			yOffset = float64(hv.Height) - hv.cardHeight
 		}
 
 		op := &ebiten.DrawImageOptions{}
 		op.GeoM.Scale(hv.scale, hv.scale)
-		op.GeoM.Translate(float64(i)*hv.cardWidth, 0)
+		op.GeoM.Translate(float64(i)*hv.cardWidth, yOffset)
+
+		if slices.Contains(hv.highlights, card) {
+			op.ColorM.Scale(1, 0, 0, 0.5)
+		}
+
 		img.DrawImage(cardImg, op)
 	}
 	return img
@@ -59,6 +83,10 @@ func (hv *HandView) FindObjectAt(x, y int) interface{} {
 		return nil
 	}
 
+	if hv.bottomAligned && float64(y-hv.Y) < float64(hv.Height)-hv.cardHeight {
+		return nil
+	}
+
 	i := int(float64(x) / hv.cardWidth)
 	if i >= hv.hand.Size() {
 		return nil
@@ -66,3 +94,16 @@ func (hv *HandView) FindObjectAt(x, y int) interface{} {
 
 	return HandCard{hv.hand.GetCards()[i]}
 }
+
+func (hv *HandView) setHighlights(cards []*game.Card) {
+	hv.highlights = cards
+	hv.ForceRedraw()
+}
+
+func (hv *HandView) HighlightCard(card *game.Card) {
+	hv.setHighlights([]*game.Card{card})
+}
+
+func (hv *HandView) ClearHighlights() {
+	hv.setHighlights([]*game.Card{})
+}