Add navigation components 131-150; pixel Pad, Finish, Park, Since

navigation/levelselect.go

@@ -0,0 +1,84 @@
+package navigation
+
+import (
+	"log/slog"
+	"strconv"
+
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/icon"
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+var star5 = pixel.MustSprite(`
+	..#..
+	.###.
+	#####
+	.###.
+	.#.#.
+`)
+
+type Stage struct {
+	Name string
+	// Locked stages cannot be entered.
+	Locked bool
+	// Cleared stages show Stars, 0 to 3.
+	Cleared bool
+	Stars   int
+}
+
+type LevelSelectOptions struct {
+	// Columns is the grid's width; zero means 5.
+	Columns  int
+	Disabled bool
+}
+
+type LevelSelectResult struct {
+	Element *ui.Element
+	// Chosen is Enter or a click on an open stage.
+	Changed, Chosen bool
+}
+
+// LevelSelect is a grid of locked, open or starred stages.
+func LevelSelect(c *ui.Context, text string, stages []Stage, selected *int, o LevelSelectOptions) LevelSelectResult {
+	k := pixel.K(c)
+	cols := pixel.Or("LevelSelect Columns", o.Columns, 5)
+	old := *selected
+	shell, base, st, picked := pixel.Pad(c, text, cols, len(stages), 30, 30, selected, o.Disabled)
+	res := LevelSelectResult{Element: shell, Changed: *selected != old, Chosen: picked >= 0 && !stages[picked].Locked}
+	base.Description(stages[*selected].Name)
+	shell.Draw(func(p *ui.Painter, r ui.Rect) {
+		g := k.Canvas(p, r)
+		for i, s := range stages {
+			x, y := i%cols*30, i/cols*30
+			fill := pixel.Face
+			if s.Locked {
+				fill = pixel.Shade
+			}
+			if i == *selected {
+				g.Cursor(x, y, 30, 30)
+			}
+			g.Frame(x+2, y+2, 26, 26, pixel.Raised, fill)
+			if s.Locked {
+				g.Sprite(x+9, y+8, icon.Lock, 0, pixel.Faint, 1)
+				continue
+			}
+			n := strconv.Itoa(i + 1)
+			g.Micro(x+15-pixel.MicroWidth(n), y+5, n, pixel.Ink, 2)
+			if s.Cleared {
+				for j := range 3 {
+					ink := pixel.Shade
+					if j < s.Stars {
+						ink = pixel.Warn
+					}
+					g.Sprite(x+5+j*7, y+20, star5, 0, ink, 1)
+				}
+			}
+		}
+		g.Finish(st)
+	})
+	if res.Chosen {
+		slog.Debug("8bit: stage chosen", "label", text, "stage", stages[*selected].Name)
+	}
+	return res
+}