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

display/flag.go

@@ -0,0 +1,35 @@
+package display
+
+import (
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type FlagOptions struct {
+	// Slot is the cloth; zero means Bad.
+	Slot  pixel.Slot
+	Scale int
+	Label string
+}
+
+// Flag waves on its pole, stepped at 6 fps.
+func Flag(c *ui.Context, o FlagOptions) *ui.Element {
+	k, sc := pixel.K(c), scale(o.Scale)
+	cloth := slotOr(o.Slot, pixel.Bad)
+	return art(c, k, o.Label, 20*sc, 26*sc, func(g pixel.Canvas) {
+		step := g.Step(6)
+		g.Rect(sc, 2*sc, sc, 24*sc, pixel.Edge)
+		g.Rect(0, 0, 3*sc, 2*sc, pixel.Warn)
+		for col := range 16 {
+			dy := [4]int{0, 1, 1, 0}[(step+col/4)%4]
+			x, y := (2+col)*sc, (3+dy)*sc
+			g.Rect(x, y, sc, 10*sc, cloth)
+			if (step+col/4)%4 == 2 {
+				g.Rect(x, y, sc, 10*sc, pixel.Shade)
+				g.Veil(x, y, sc, 10*sc, cloth, 8)
+			}
+			g.Rect(x, y, sc, sc, pixel.Lit)
+		}
+	})
+}