Added progress tracking.

cmd/krampus19/context.go

@@ -26,6 +26,7 @@ type Context struct {
 	Textures     map[string]texture
 	Sprites      map[string]sprite
 	Levels       map[string]levelPack
+	Progress     progress
 	SpriteDrawer SpriteDrawer
 	Settings     settings
 	Palette      *alui.Palette

cmd/krampus19/game.go

@@ -196,6 +196,10 @@ func (g *game) Init(disp *allg5.Display, settings settings, res vfs.CopyDir, con
 	g.ctx = &Context{Resources: res, Textures: map[string]texture{}, Settings: settings, Navigation: navigation{game: g}}
 	g.ctx.DisplaySize = geom.Pt(disp.Width(), disp.Height())
 	g.ctx.SpriteDrawer.ctx = g.ctx
+	err := g.ctx.Progress.load()
+	if err != nil {
+		log.Printf("Unable to load previous progress.")
+	}
 	if err := g.initUI(disp, cons, fps); err != nil {
 		return err
 	}

cmd/krampus19/io.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+)
+
+func decodeJSON(path string, v interface{}) error {
+	f, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	err = json.NewDecoder(f).Decode(v)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func encodeJSON(path string, v interface{}) error {
+	f, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	return json.NewEncoder(f).Encode(v)
+}
+
+func userDir() (string, error) {
+	config, err := os.UserConfigDir()
+	if err != nil {
+		return "", err
+	}
+	dir := filepath.Join(config, "krampus19")
+	err = os.MkdirAll(dir, 0600)
+	if err != nil {
+		return "", err
+	}
+	return dir, nil
+}
+
+func userFile(name string) (string, error) {
+	dir, err := userDir()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(dir, name), nil
+}

cmd/krampus19/krampus19.go

@@ -48,7 +48,7 @@ func run() error {
 	}
 	err = settings.StoreDefault()
 	if err != nil {
-		log.Printf("Unable to store settings.")
+		log.Printf("Unable to store settings; err: %v", err)
 	}
 
 	log.Printf("Creating display.")

cmd/krampus19/levelselect.go

@@ -19,10 +19,15 @@ func (s *levelSelect) Enter(ctx *Context) error {
 	s.ctx = ctx
 	s.pack = s.ctx.Levels[s.packID]
 	s.Init()
-	name := func(id string) string { return fmt.Sprintf("Level %s", id) }
+	name := func(id string, steps int) string {
+		if steps == 0 {
+			return fmt.Sprintf("Level %s", id)
+		}
+		return fmt.Sprintf("Level %s (%d)", id, steps)
+	}
 	for _, id := range s.pack.order {
 		levelID := id
-		s.Add(name(levelID), func() {
+		s.Add(name(levelID, s.ctx.Progress.Level(s.packID, levelID).Steps), func() {
 			s.ctx.Navigation.PlayLevel(s.packID, levelID)
 		})
 	}

cmd/krampus19/playlevel.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"log"
 	"sort"
 
 	"opslag.de/schobers/allg5"
@@ -60,7 +61,22 @@ func (l *playLevel) Leave() {}
 func (l *playLevel) onComplete() {
 	menu := alui.NewMenu()
 	menu.AddChild(alui.NewMargins(&alui.Label{ControlBase: alui.ControlBase{Font: "header"}, Text: "Congratulations", TextAlign: allg5.AlignCenter}, 3*margin, 0, 2*margin))
-	menu.AddChild(alui.NewMargins(&alui.Label{Text: fmt.Sprintf("You've completed the level in %d steps", l.state.steps), TextAlign: allg5.AlignCenter}, 0, 0, 2*margin))
+	menu.AddChild(alui.NewMargins(&alui.Label{Text: fmt.Sprintf("You've completed the level in %d steps.", l.state.steps), TextAlign: allg5.AlignCenter}, 0, 0, 2*margin))
+
+	progress := l.ctx.Progress.Level(l.packID, l.levelID)
+	if l.state.steps < progress.Steps || progress.Steps == 0 {
+		var improvement = progress.Steps - l.state.steps
+		if improvement > 0 { // first time it is lower than zero (no previous record).
+			menu.AddChild(alui.NewMargins(&alui.Label{Text: fmt.Sprintf("This is an improvement of %d steps.", improvement), TextAlign: allg5.AlignCenter}, 0, 0, 2*margin))
+		}
+
+		err := l.ctx.Progress.Update(l.packID, l.levelID, func(p *levelProgress) {
+			p.Steps = l.state.steps
+		})
+		if err != nil {
+			log.Printf("Unable to store progress; err: %v", err)
+		}
+	}
 
 	nextID, ok := l.state.pack.FindNext(l.levelID)
 	if ok {

cmd/krampus19/progress.go

@@ -0,0 +1,67 @@
+package main
+
+type progress struct {
+	Packs map[string]packProgress
+}
+
+func (p *progress) Pack(packID string) packProgress {
+	if p.Packs == nil {
+		p.Packs = map[string]packProgress{}
+	}
+	return p.Packs[packID]
+}
+
+func (p *progress) Level(packID, levelID string) levelProgress {
+	pack := p.Pack(packID)
+	return pack.Level(levelID)
+}
+
+func (p *progress) Update(packID, levelID string, update func(*levelProgress)) error {
+	pack := p.Pack(packID)
+	pack.Update(levelID, update)
+	p.Packs[packID] = pack
+	return p.store()
+}
+
+type packProgress struct {
+	Levels map[string]levelProgress
+}
+
+func (p *packProgress) Level(id string) levelProgress {
+	if p.Levels == nil {
+		p.Levels = map[string]levelProgress{}
+	}
+	return p.Levels[id]
+}
+
+func (p *packProgress) Update(id string, update func(*levelProgress)) {
+	level := p.Level(id)
+	update(&level)
+	p.Levels[id] = level
+}
+
+type levelProgress struct {
+	Steps int
+}
+
+func (p *progress) store() error {
+	path, err := userFile("progress.json")
+	if err != nil {
+		return err
+	}
+	return encodeJSON(path, p)
+}
+
+func (p *progress) load() error {
+	path, err := userFile("progress.json")
+	if err != nil {
+		return err
+	}
+	var fromFile progress
+	err = decodeJSON(path, &fromFile)
+	if err != nil {
+		return err
+	}
+	*p = fromFile
+	return nil
+}

cmd/krampus19/settings.go

@@ -1,10 +1,6 @@
 package main
 
 import (
-	"encoding/json"
-	"os"
-	"path/filepath"
-
 	"opslag.de/schobers/allg5"
 )
 
@@ -28,27 +24,11 @@ type settings struct {
 	Video    video
 }
 
-func (s *settings) DefaultPath() (string, error) {
-	config, err := os.UserConfigDir()
-	if err != nil {
-		return "", err
-	}
-	dir := filepath.Join(config, "krampus19")
-	err = os.MkdirAll(dir, 0600)
-	if err != nil {
-		return "", err
-	}
-	return filepath.Join(dir, "settings.json"), nil
-}
+func (s *settings) DefaultPath() (string, error) { return userFile("settings.json") }
 
 func (s *settings) Load(path string) error {
-	f, err := os.Open(path)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
 	var fromFile settings
-	err = json.NewDecoder(f).Decode(&fromFile)
+	err := decodeJSON(path, &fromFile)
 	if err != nil {
 		return err
 	}
@@ -64,14 +44,7 @@ func (s *settings) LoadDefault() error {
 	return s.Load(path)
 }
 
-func (s *settings) Store(path string) error {
-	f, err := os.Create(path)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-	return json.NewEncoder(f).Encode(&s)
-}
+func (s *settings) Store(path string) error { return encodeJSON(path, s) }
 
 func (s *settings) StoreDefault() error {
 	path, err := s.DefaultPath()