Add game components 246-268; data.DrawSlot, Canvas.TextVeil

Health, mana and experience bars, quarter hearts, lives, a spinning
coin counter, score board, stage timer, minimap with fog, compass,
hotbar, paper-doll equipment, skill tree, skill buttons with cooldown
wipes, status effects, a boss bar, damage numbers, quest log and
tracker, party frames, character sheet, level-up screen and shop.
data exports DrawSlot so every slot looks alike; pixel adds TextVeil
for dissolving text. Messages the font cannot draw are fixed and
TestMessagesHaveGlyphs holds every message to the font.

game/charactersheet.go

@@ -0,0 +1,63 @@
+package game
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/text"
+)
+
+// Stat is a named number on a sheet.
+type Stat struct {
+	Name  string
+	Value int
+}
+
+// Character is who a character sheet describes.
+type Character struct {
+	Name, Class string
+	Level       int
+	Portrait    *pixel.Sprite
+	Stats       []Stat
+}
+
+type CharacterSheetOptions struct{}
+
+// CharacterSheet shows a portrait, name, class, level and stats.
+func CharacterSheet(c *ui.Context, h Character, o CharacterSheetOptions) *ui.Element {
+	k := pixel.K(c)
+	if h.Portrait == nil || h.Level < 1 {
+		panic(fmt.Sprintf("game: character %q needs a portrait and a level (%d)", h.Name, h.Level))
+	}
+	name, value := 0, 0
+	stats := make([]string, len(h.Stats))
+	for i, s := range h.Stats {
+		name, value = max(name, pixel.Measure(s.Name)), max(value, pixel.Measure(strconv.Itoa(s.Value)))
+		stats[i] = s.Name + " " + strconv.Itoa(s.Value)
+	}
+	return ui.Row(c).Gap(k.D(8)).AlignItems(ui.Start).Role(ui.RoleGroup).Label(h.Name).Children(func() {
+		ui.Box(c).Size(k.D(40), k.D(40)).Draw(func(p *ui.Painter, r ui.Rect) {
+			g := k.Canvas(p, r)
+			g.Frame(0, 0, 40, 40, pixel.Sunken, pixel.Well)
+			g.Sprite(2, 2, h.Portrait, 0, pixel.Ink, 3)
+		})
+		ui.Column(c).Gap(k.D(3)).Children(func() {
+			text.ShadowText(c, h.Name, text.ShadowTextOptions{Scale: 2})
+			pixel.Text(c, h.Class+"  "+fmt.Sprintf(k.Msg("level"), h.Level), pixel.TextOptions{Slot: pixel.Faint})
+			// Stats stand in a column: names Faint, values right-aligned.
+			w := name + 8 + value
+			ui.Box(c).Role(ui.RoleText).Label(strings.Join(stats, ", ")).Size(k.D(w), k.D(len(h.Stats)*pixel.LineHeight)).Draw(func(p *ui.Painter, r ui.Rect) {
+				g := k.Canvas(p, r)
+				for i, s := range h.Stats {
+					n := strconv.Itoa(s.Value)
+					g.Text(0, i*pixel.LineHeight, s.Name, pixel.Faint, 1)
+					g.Text(w-pixel.Measure(n), i*pixel.LineHeight, n, pixel.Ink, 1)
+				}
+			})
+		})
+	})
+}