Add display components 041-065; move Icon into display; QR via rsc.io/qr

display/gem.go

@@ -0,0 +1,74 @@
+package display
+
+import (
+	"fmt"
+
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type Rarity uint8
+
+const (
+	Common Rarity = iota
+	Uncommon
+	Rare
+	Epic
+	Legendary
+)
+
+func (r Rarity) slot() pixel.Slot {
+	if r > Legendary {
+		panic(fmt.Sprintf("display: unknown Rarity %d", r))
+	}
+	return [...]pixel.Slot{pixel.Faint, pixel.Good, pixel.Info, pixel.Magic, pixel.Warn}[r]
+}
+
+func (r Rarity) name(k pixel.Kit) string {
+	return k.Msg([...]string{"common", "uncommon", "rare", "epic", "legendary"}[r])
+}
+
+var (
+	gem = pixel.MustSprite(`
+		...eeeee...
+		..e#l#l#e..
+		.e##l#l##e.
+		eeeeeeeeeee
+		e#ll###ss#e
+		.e#l###s#e.
+		..e#l#s#e..
+		...e#s#e...
+		....e#e....
+		.....e.....
+	`)
+	glint = pixel.MustSprite(`
+		..#..
+		..#..
+		##.##
+		..#..
+		..#..
+
+		.....
+		..#..
+		.#.#.
+		..#..
+		.....
+	`)
+)
+
+type GemOptions struct {
+	Scale int
+}
+
+// Gem is a cut gem by rarity, sparkling in steps.
+func Gem(c *ui.Context, r Rarity, o GemOptions) *ui.Element {
+	k, sc := pixel.K(c), scale(o.Scale)
+	ink := r.slot()
+	return art(c, k, r.name(k), (gem.W+3)*sc, (gem.H+2)*sc, func(g pixel.Canvas) {
+		g.Sprite(0, 2*sc, gem, 0, ink, sc)
+		if f := g.Step(4) % 4; f < 2 {
+			g.Sprite(gem.W*sc-2*sc, 0, glint, f, pixel.Lit, sc)
+		}
+	})
+}