Web export: the page build key covers the runtime and scripts, so a new engine gets new immutable URLs

Try it: scene keys in the hint, J label on Health and Hurtbox, faster Respawn, sound starts with the Try click; lighter web audio pump; release notes from tools/release/notes
Icons in the engine style for gameplay, shake, clips, curves, dice, debug draw and install; web loader retries a stalled download
2026-10-22 19:26:12 +03:00 · 2026-10-22 18:55:33 +03:00 · 2026-10-22 17:38:02 +03:00 · 2026-10-22 16:25:06 +03:00 · 2026-10-22 16:00:33 +03:00 · 2026-10-22 14:41:24 +03:00
226 changed files with 3868 additions and 394 deletions
@@ -22,7 +22,7 @@ WEB_SMOKE = cd tools/websmoke && npm ci --no-audit --no-fund && CHROMIUM=$(CHROM
 WASM_BUDGET = 8388608
 WEB_DEMO_PROJECT ?= examples/platformer
 WEB_DEMO = cd tools/websmoke && CHROMIUM=$(CHROMIUM) node demo.mjs --site=$(CURDIR)/site
-WEB_DEMO_QUIET = sed -i 's/<html lang="en"/<html lang="en" data-music="off"/' site/demo/index.html
+WEB_DEMO_QUIET = sed -i 's/<html lang="en"/<html lang="en" data-sound="off"/' site/demo/index.html
 WEB_DEMO_BUDGET = @size=$$(stat -c %s site/demo/game.wasm.gz); echo "demo game.wasm.gz: $$size bytes"; \
 	if [ $$size -gt $(WASM_BUDGET) ]; then echo "the web demo is over the 8 MB gzip budget"; exit 1; fi
 TRY_BUDGET = 10485760
@@ -40,14 +40,14 @@ BENCH_PHYSICS_PKGS :=
 .DEFAULT_GOAL := bootstrap
 -include modules/*/module.mk
-.PHONY: dmg nsis-check appimage bootstrap build test test-nonative test-editor test-runtime test-gl vet lint depcheck smoke run genfont genicons icons icons-doc res genpreviews golden golden-update site-headless bench bench-baseline bench-scripts bench-build bench-compare bench-profile bench-scripts-run bench-allocs playground playground-size site site-check cli example example-platformer check-all ci clean fuzz runtime export-smoke editor-app shaders test-wasm web-smoke web-smoke-update try-size shots shots-check
+.PHONY: dmg nsis-check appimage bootstrap build test test-nonative test-editor test-runtime test-gl vet lint depcheck smoke run genfont genicons icons icons-doc res genpreviews golden golden-update site-headless bench bench-baseline bench-scripts bench-build bench-compare bench-profile bench-scripts-run bench-allocs playground playground-size site site-check cli example example-platformer check-all ci clean fuzz runtime export-smoke editor-app shaders test-wasm web-smoke web-smoke-update try-size shots shots-check affected quick check-camera check-audio check-gameplay check-mutate check-editor check-web check-docs pkgsize
 XVFB := $(shell command -v xvfb-run 2>/dev/null)
 GL_OVERRIDE = MESA_GL_VERSION_OVERRIDE=3.3 MESA_GLSL_VERSION_OVERRIDE=330
 ifneq ($(XVFB),)
-GL_ENV = $(XVFB) -a -s "-screen 0 1280x720x24" env SDL_VIDEODRIVER=x11 LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=llvmpipe $(GL_OVERRIDE)
+GL_ENV = $(XVFB) -a -s "-screen 0 1280x720x24" env SDL_VIDEODRIVER=x11 SDL_AUDIO_DRIVER=dummy LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=llvmpipe $(GL_OVERRIDE)
 else
-GL_ENV = env SDL_VIDEODRIVER=offscreen LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=llvmpipe $(GL_OVERRIDE)
+GL_ENV = env SDL_VIDEODRIVER=offscreen SDL_AUDIO_DRIVER=dummy LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=llvmpipe $(GL_OVERRIDE)
 endif
 NONATIVE_PKGS = $$(go list ./... | grep -v -e '/platform/sdl$$' -e '/gpu/gl33$$' -e '/gpu/gl33/gl$$')
@@ -247,6 +247,7 @@ try-size:
 	go run ./tools/wasmsize -top 15 -depth 2 .cache/aego-try.wasm
 web-smoke: site
 	sh tools/webbudget.sh site
 	$(WEB_SMOKE) --report=$(CURDIR)/.cache/web-bench.json
 	$(WEB_DEMO)
 	$(WEB_TRY)
@@ -255,6 +256,7 @@ web-smoke: site
 web-smoke-update: site
 	$(WEB_SMOKE) --update
 	$(WEB_DEMO) --update
 	$(WEB_TRY) --update
 cli: bootstrap
 	go build -o .cache/bin/aego ./cmd/aego
@@ -290,13 +292,42 @@ fuzz:
 	go test -run '^$$' -fuzz '^FuzzWAV$$' -fuzztime $(FUZZTIME) ./audio/codec
 	go test -run '^$$' -fuzz '^FuzzVorbis$$' -fuzztime $(FUZZTIME) ./audio/codec
 affected:
 	@pkgs=$$(sh tools/affected.sh $(BASE)); if [ -z "$$pkgs" ]; then echo "nothing affected"; else go vet $$pkgs && go test $$pkgs; fi
 quick:
 	@pkgs=$$(sh tools/affected.sh $(BASE)); if [ -n "$$pkgs" ]; then go build $$pkgs && go test -short $$pkgs; fi
 check-camera:
 	go test ./modules/camera/... ./tests/camera/...
 check-audio:
 	go test ./audio/... ./modules/audio/... ./tests/audio/...
 check-gameplay:
 	go test ./modules/gameplay/... ./tests/gameplay/... ./modules/physics/...
 check-mutate:
 	go test ./scene/mutate/... ./tests/mutate/... ./app/agent/...
 check-editor:
 	go test ./editor/... ./app/edit/...
 check-web: test-wasm web-smoke
 check-docs: site-check
 pkgsize:
 	@sh tools/pkgsize.sh
 ci: build vet lint depcheck test test-nonative test-editor test-runtime test-wasm runtime smoke fuzz golden shots-check test-gl cli playground web-smoke site-check example example-platformer check-all export-smoke $(MODULE_CI) bench-allocs
 # Documentation screenshots of the real editor on the platformer example, under a clean user profile.
 SHOTS_TMP = $(CURDIR)/.cache/shots
 ifneq ($(XVFB),)
-SHOTS_ENV = $(XVFB) -a -s "-screen 0 1600x900x24" env SDL_VIDEODRIVER=x11 LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=llvmpipe $(GL_OVERRIDE)
+SHOTS_ENV = $(XVFB) -a -s "-screen 0 1600x900x24" env SDL_VIDEODRIVER=x11 SDL_AUDIO_DRIVER=dummy LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=llvmpipe $(GL_OVERRIDE)
 else
 SHOTS_ENV = $(GL_ENV)
 endif
@@ -0,0 +1,8 @@
 # Aego
 A 2D and 3D game engine with an editor, a scripting language and a web export, written in Go.
 - Documentation and the playground: <https://aego.akarpov.ru>
 - Installing and building from source: [engine/res/docs/install.md](engine/res/docs/install.md)
 - Contributing, check levels and rules for engine code: [docs/contributing.md](docs/contributing.md)
 - Architecture and decisions: [ARCHITECTURE.md](ARCHITECTURE.md)
@@ -2,6 +2,7 @@ package agent
 import (
 	"errors"
 	"maps"
 	"os"
 	"path"
 	"slices"
@@ -65,9 +66,8 @@ func sceneCommands() []*Command {
 		{Name: "scene.rename", Doc: "rename a node", Write: true, Args: []Arg{argFile, argNode, {Name: "name", Type: "string", Doc: "new name", Required: true, Pos: true}}, Run: func(s *Session, a Args) (*Output, error) {
 			return s.sceneTx(a, "Rename", mutate.Rename(a.Str("node"), a.Str("name")))
 		}},
-		{Name: "scene.add-comp", Doc: "add a component with its defaults", Write: true, Args: []Arg{argFile, argNode, {Name: "comp", Type: "string", Doc: "component name, full or a unique suffix (Body2D)", Required: true, Pos: true}}, Run: func(s *Session, a Args) (*Output, error) {
+		{Name: "scene.add-comp", Doc: "add a component with its defaults and the components it requires", Write: true, Args: []Arg{argFile, argNode, {Name: "comp", Type: "string", Doc: "component name, full or a unique suffix (Body2D)", Required: true, Pos: true},
-			return s.sceneTx(a, "Add Component", mutate.AddComp(a.Str("node"), a.Str("comp")))
+			{Name: "no-required", Type: "boolean", Doc: "add only this component; missing requirements stay as problems"}}, Run: (*Session).sceneAddComp},
 		}},
 		{Name: "scene.remove-comp", Doc: "remove a component", Write: true, Args: []Arg{argFile, argNode, {Name: "comp", Type: "string", Doc: "component name", Required: true, Pos: true}}, Run: func(s *Session, a Args) (*Output, error) {
 			return s.sceneTx(a, "Remove Component", mutate.RemoveComp(a.Str("node"), a.Str("comp")))
 		}},
@@ -93,6 +93,49 @@ func (s *Session) scene(a Args) (string, []byte, *mutate.Document, error) {
 	return rel, src, doc, err
 }
 // sceneAddComp adds a component and, unless no-required is set, the components it requires first, in one transaction (D144).
 func (s *Session) sceneAddComp(a Args) (*Output, error) {
 	rel, src, doc, err := s.scene(a)
 	if err != nil {
 		return nil, err
 	}
 	node, comp := a.Str("node"), a.Str("comp")
 	ops := []mutate.Op{mutate.AddComp(node, comp)}
 	var notes []string
 	if !a.Bool("no-required") {
 		td, err := doc.Component(comp)
 		if err != nil {
 			return nil, err
 		}
 		h, err := doc.Node(node)
 		if err != nil {
 			return nil, err
 		}
 		req, err := mutate.Required(doc.Scene, td, h)
 		if err != nil {
 			return nil, err
 		}
 		ops = ops[:0]
 		for _, r := range req {
 			ops = append(ops, mutate.AddComp(node, r.FullName))
 			notes = append(notes, "added "+label(r)+" (required by "+label(td)+")")
 		}
 		ops = append(ops, mutate.AddComp(node, td.FullName))
 	}
 	out, err := s.applyDoc(a, rel, src, doc, mutate.Tx{Label: "Add Component", Ops: ops})
 	if out != nil {
 		out.Notes = append(notes, out.Notes...)
 	}
 	return out, err
 }
 func label(td *schema.TypeDescriptor) string {
 	if td.DisplayName != "" {
 		return td.DisplayName
 	}
 	return td.FullName
 }
 func (s *Session) sceneTx(a Args, label string, ops ...mutate.Op) (*Output, error) {
 	rel, src, doc, err := s.scene(a)
 	if err != nil {
@@ -245,6 +288,9 @@ func (s *Session) sceneRun(a Args) (*Output, error) {
 	}
 	var b strings.Builder
 	b.WriteString("frames: " + strconv.Itoa(rep.Frames) + "\nhash: " + rep.Hash + "\n")
 	for _, k := range slices.Sorted(maps.Keys(rep.Counters)) {
 		b.WriteString(k + ": " + strconv.FormatUint(rep.Counters[k], 10) + "\n")
 	}
 	for _, l := range rep.Log {
 		b.WriteString(l + "\n")
 	}
@@ -1,6 +1,7 @@
 package agent
 import (
 	"aego/script/abi"
 	"errors"
 	"strings"
@@ -34,6 +35,14 @@ type TypeView struct {
 	Requires []string    `json:"requires,omitempty"`
 	Doc      string      `json:"doc,omitempty"`
 	Fields   []FieldView `json:"fields,omitempty"`
 	Methods  []CallView  `json:"methods,omitempty"`
 	Signals  []CallView  `json:"signals,omitempty"`
 }
 type CallView struct {
 	Name string `json:"name"`
 	Sig  string `json:"sig"`
 	Doc  string `json:"doc,omitempty"`
 }
 func schemaCommands() []*Command {
@@ -163,5 +172,51 @@ func (s *Session) schemaShow(a Args) (*Output, error) {
 		}
 		b.WriteString("\n")
 	}
 	if s.kit != nil {
 		for _, cm := range s.kit.methods(td.FullName) {
 			v.Methods = append(v.Methods, CallView{Name: cm.Name, Sig: methodSig(cm.Sig, cm.Params), Doc: summary(cm.Doc)})
 		}
 	}
 	for _, sg := range td.Signals {
 		params := make([]string, len(sg.Params))
 		for i, p := range sg.Params {
 			params[i] = p
 			if i < len(sg.Names) && sg.Names[i] != "" {
 				params[i] = sg.Names[i] + " " + p
 			}
 		}
 		v.Signals = append(v.Signals, CallView{Name: sg.Name, Sig: "(" + strings.Join(params, ", ") + ")", Doc: summary(sg.Doc)})
 	}
 	for _, sec := range []struct {
 		title string
 		list  []CallView
 	}{{"methods", v.Methods}, {"signals", v.Signals}} {
 		if len(sec.list) == 0 {
 			continue
 		}
 		b.WriteString(sec.title + ":\n")
 		for _, c := range sec.list {
 			b.WriteString("  " + c.Name + c.Sig)
 			if c.Doc != "" {
 				b.WriteString("  — " + c.Doc)
 			}
 			b.WriteString("\n")
 		}
 	}
 	return &Output{Value: v, Text: b.String()}, nil
 }
 func methodSig(sig abi.Signature, names []string) string {
 	params := make([]string, len(sig.Params))
 	for i, p := range sig.Params {
 		params[i] = p.String()
 		if i < len(names) && names[i] != "" {
 			params[i] = names[i] + " " + params[i]
 		}
 	}
 	out := "(" + strings.Join(params, ", ") + ")"
 	if sig.Result.Kind != abi.Void {
 		out += " " + sig.Result.String()
 	}
 	return out
 }
@@ -28,6 +28,7 @@ import (
 	"aego/scene/sceneio"
 	"aego/schema"
 	"aego/script/bind"
 	"aego/script/bind/manifest"
 	"aego/script/reload"
 	"aego/script/runtime"
 	"aego/script/workspace"
@@ -48,6 +49,7 @@ type RunRequest struct {
 type RunReport struct {
 	Frames   int               `json:"frames"`
 	Hash     string            `json:"hash"`
 	Counters map[string]uint64 `json:"counters,omitempty"`
 	Log      []string          `json:"log,omitempty"`
 	Error    string            `json:"error,omitempty"`
 }
@@ -79,6 +81,25 @@ type Kit struct {
 	ws      *workspace.Workspace
 	binds   *bind.Registry
 	opt     Options
 	man     *manifest.Manifest
 }
 // methods lists the script methods the bindings give a component type, built once per kit.
 func (k *Kit) methods(comp string) []manifest.CompMethod {
 	if k.man == nil {
 		m, err := manifest.FromRegistry(k.binds, k.Types.Schema())
 		if err != nil {
 			return nil
 		}
 		k.man = m
 	}
 	var out []manifest.CompMethod
 	for _, cm := range k.man.CompMethods {
 		if cm.Comp == comp {
 			out = append(out, cm)
 		}
 	}
 	return out
 }
 func NewKit(p *project.Project, opt Options) (*Kit, error) {
@@ -41,6 +41,7 @@ type Config struct {
 	Editor             bool
 	FailOnScriptErrors bool
 	Catalog            assembly.Catalog
 	Platform           platform.Platform
 	Profile            string
 	NoProfile          bool
 }
@@ -98,6 +99,9 @@ func (h *Host) build(cfg Config, mods []module.Module) error {
 		ecfg.LoopScope = cfg.LoopScope
 	}
 	builder := engine.NewBuilder(ecfg).WithLogger(lg).Use(rmod)
 	if cfg.Platform != nil {
 		builder.WithPlatform(cfg.Platform)
 	}
 	if h.Types, err = assembly.NewTypes(); err != nil {
 		return err
 	}
@@ -187,6 +191,7 @@ func (h *Host) build(cfg Config, mods []module.Module) error {
 	}
 	h.Settings.SetNames(h.Sections.Names)
 	h.Engine.SetService(settings.ServiceID, h.Settings)
 	h.Engine.OnClose(h.Modules.Shutdown)
 	if err = h.Modules.Init(&module.InitContext{Engine: h.Engine, Assets: h.Loader, Log: lg, Editor: cfg.Editor, Sections: h.Sections, Problems: h.Problems, Settings: h.Settings}); err != nil {
 		return err
 	}
@@ -227,9 +232,6 @@ func (h *Host) Close() {
 		return
 	}
 	h.closed = true
 	if h.Modules != nil {
 		h.Modules.Shutdown()
 	}
 	if h.Engine != nil {
 		h.Engine.Close()
 	}
@@ -0,0 +1,70 @@
 package docstool
 import (
 	"fmt"
 	"io"
 	"strings"
 	"aego/app/playground"
 	"aego/engine/docs"
 	"aego/engine/module"
 )
 // CheckExamples loads the example scene of every module code, validates it and runs it headless; the code must be among the problems it reports (D146).
 func CheckExamples(reg *docs.Registry, w io.Writer) int {
 	pg, err := playground.New()
 	if err != nil {
 		fmt.Fprintln(w, "examples: cannot start the docs runtime:", err)
 		return 1
 	}
 	pg.SetGame(playground.GameConfig{Headless: true, FrameTime: 1.0 / 60})
 	defer func() {
 		if g := pg.Game(); g != nil {
 			g.Close()
 		}
 	}()
 	bad := 0
 	for _, e := range reg.All() {
 		if e.Kind != docs.Code || e.Diag == nil || e.Diag.Example == "" {
 			continue
 		}
 		found, why := false, ""
 		code := ""
 		if e.Diag.ExampleScript != "" {
 			c, err := pg.TryCode(e.Diag.ExampleScript)
 			if err != nil {
 				fmt.Fprintf(w, "%s: error: example script does not compile: %v\n", e.ID, err)
 				bad++
 				continue
 			}
 			code = c
 		}
 		if res := pg.PlayScene("example-"+e.ID, []byte(e.Diag.Example), code, nil); !res.Started {
 			why = "does not load: " + res.Error
 		} else {
 			for _, d := range module.ValidateScene(pg.Game().Scene(), nil) {
 				found = found || d.Code == e.ID
 			}
 			if err := pg.Game().Step(tryFrames); err != nil {
 				why = "stops the engine: " + err.Error()
 			}
 		}
 		poll := pg.Poll()
 		for _, f := range poll.Faults {
 			found = found || f.Code == e.ID
 		}
 		for _, l := range poll.Log {
 			found = found || strings.Contains(l.Text, e.ID)
 		}
 		switch {
 		case why != "":
 			fmt.Fprintf(w, "%s: error: example %s %s\n", e.ID, e.Diag.ExampleFile, why)
 			bad++
 		case !found:
 			fmt.Fprintf(w, "%s: error: example of %s does not produce %s\n", e.ID, e.ID, e.ID)
 			bad++
 		}
 	}
 	pg.Stop()
 	return bad
 }
@@ -76,6 +76,9 @@ func (e *Env) Check(strict bool) int {
 	if CheckTry(reg, e.Stdout) > 0 && code == 0 {
 		code = 1
 	}
 	if CheckExamples(reg, e.Stdout) > 0 && code == 0 {
 		code = 1
 	}
 	return code
 }
@@ -19,6 +19,7 @@ type request struct {
 	Component string            `json:"component"`
 	Field     string            `json:"field"`
 	Value     float64           `json:"value"`
 	Node      string            `json:"node"`
 }
 type Reply struct {
@@ -27,6 +28,7 @@ type Reply struct {
 	Error  string            `json:"error,omitempty"`
 	State  *docsession.State `json:"state,omitempty"`
 	Log    []Line            `json:"log,omitempty"`
 	Pose   []float64         `json:"pose,omitempty"`
 }
 func (a *App) Call(method string, payload []byte) Reply {
@@ -64,6 +66,17 @@ func (a *App) Call(method string, payload []byte) Reply {
 	case "state":
 		st := s.State()
 		return Reply{State: &st}
 	case "pose":
 		sc := s.Controller().Scene()
 		if sc == nil {
 			return Reply{Error: "the scene is not running"}
 		}
 		h := sc.Find(sc.Root(), req.Node)
 		if h.IsZero() || !sc.IsAlive(h) {
 			return Reply{Error: "no node " + strconv.Quote(req.Node)}
 		}
 		p := sc.WorldPosition(h)
 		return Reply{Pose: []float64{float64(p.X), float64(p.Y)}}
 	case "log":
 		out := Reply{Log: a.lines}
 		a.lines = nil
@@ -179,7 +179,7 @@ func TestProfilerSectionsFollowPlay(t *testing.T) {
 		s.Step()
 	}
 	drawPanel(s, prof)
-	expectSections(t, prof.Sections(), "Frame", "Memory", "Game", "Scripts", "Physics", "Audio")
+	expectSections(t, prof.Sections(), "Frame", "Memory", "Game", "Scripts", "Physics", "Audio", "Camera", "Gameplay")
 	if _, err := ctx.Docs.Open("scenes/other.aescene"); err != nil {
 		t.Fatal(err)
 	}
@@ -7,8 +7,10 @@ import (
 	"os"
 	"path/filepath"
 	"aego/core/ids"
 	"aego/editor/core/command"
 	"aego/editor/core/context"
 	"aego/editor/core/vectors"
 	"aego/editor/core/workspace"
 	"aego/editor/panels/gameview"
 	"aego/editor/shell"
@@ -56,7 +58,60 @@ func (s *Session) shots(dir string) error {
 			}
 			return selectNamed(ctx, "Player")
 		}},
 		{name: "hitbox-gizmo", frames: 60, setup: func(s *Session) error {
 			sc := ctx.Scene()
 			var span []ids.NodeID
 			for _, n := range []string{"EnemyLeft", "PatrolA1", "PatrolB1"} {
 				span = append(span, sc.ID(sc.Find(sc.Root(), n)))
 			}
 			ctx.Select(span...)
 			if err := ctx.Commands.Run(command.SceneFrame); err != nil {
 				return err
 			}
 			for i := 0; i < 30; i++ {
 				s.Step()
 			}
 			return selectNamed(ctx, "EnemyLeft")
 		}},
 		{name: "camera-follow", frames: 60, setup: func(s *Session) error {
 			sc := ctx.Scene()
 			ctx.Select(sc.ID(sc.Find(sc.Root(), "Camera")), sc.ID(sc.Find(sc.Root(), "Player")))
 			if err := ctx.Commands.Run(command.SceneFrame); err != nil {
 				return err
 			}
 			for i := 0; i < 30; i++ {
 				s.Step()
 			}
 			return selectNamed(ctx, "Camera")
 		}},
 		{name: "camera-zone", frames: 60, setup: func(s *Session) error {
 			sc := ctx.Scene()
 			ctx.Select(sc.ID(sc.Find(sc.Root(), "ArenaZone")), sc.ID(sc.Find(sc.Root(), "PatrolA2")), sc.ID(sc.Find(sc.Root(), "PatrolB2")), sc.ID(sc.Find(sc.Root(), "GroundRight")))
 			if err := ctx.Commands.Run(command.SceneFrame); err != nil {
 				return err
 			}
 			for i := 0; i < 30; i++ {
 				s.Step()
 			}
 			return selectNamed(ctx, "ArenaZone")
 		}},
 		{name: "clip-inspector", frames: 60, setup: func(s *Session) error {
 			id, ok := s.Pipeline.Lookup("assets/audio/music.ogg")
 			if !ok {
 				return fmt.Errorf("no assets/audio/music.ogg")
 			}
 			s.App.Data().Inspect(id)
 			return nil
 		}},
 		{name: "add-required", frames: 30, setup: func(s *Session) error {
 			if err := selectNamed(ctx, "PatrolA1"); err != nil {
 				return err
 			}
 			s.App.Inspector().OpenAdd("follow")
 			return nil
 		}},
 		{name: "tags", frames: 60, setup: func(s *Session) error {
 			ctx.UI.CloseAllPopups()
 			return selectNamed(ctx, "Player")
 		}},
 		{name: "prefab", frames: 60, setup: func(s *Session) error {
@@ -83,12 +138,23 @@ func (s *Session) shots(dir string) error {
 			scene()
 			return ctx.Commands.Run(command.PlayStart)
 		}},
 		{name: "motion-play", frames: 30, setup: func(s *Session) error {
 			s.App.Workspace().Show(workspace.Inspector)
 			s.App.Inspector().ScrollTo("gameplay.Motion2D")
 			return selectNamed(ctx, "Player")
 		}},
 		{name: "mixer", frames: 120, setup: func(s *Session) error {
 			s.App.Workspace().Switch(workspace.Audio)
 			s.App.Workspace().Show(workspace.Mixer)
 			return nil
 		}},
 		{name: "physics-debug", frames: 30, setup: func(s *Session) error {
 			s.App.Workspace().Switch(workspace.Design)
 			ctx.Overlay.Set("physics.debug.contacts", true)
 			return ctx.Commands.Run(gameview.CommandOverlays)
 		}},
 		{name: "demo", frames: 60, inset: 2, bottom: 28, setup: func(s *Session) error {
-			for _, f := range []string{"physics.debug", "physics.debug.shapes", "physics.debug.contacts", "physics.debug.joints"} {
+			for _, f := range []string{gameview.CommandOverlays, vectors.CommandToggle} {
 				ctx.Overlay.Set(f, false)
 			}
 			return ctx.Commands.Run(shell.CommandFullscreenPlay)
@@ -3,7 +3,9 @@ package export
 import (
 	"bytes"
 	"compress/gzip"
 	"crypto/sha256"
 	"embed"
 	"encoding/hex"
 	"encoding/json"
 	"html/template"
 	"io/fs"
@@ -141,6 +143,21 @@ func (j *job) webTitle() string {
 	return AppName(j.p)
 }
 // webBuild keys the page's ?v= URLs on the data, the runtime and both scripts, so a new engine gets new URLs under immutable caching.
 func (j *job) webBuild(scripts ...[]byte) (string, error) {
 	wasm, err := os.ReadFile(j.l.binary())
 	if err != nil {
 		return "", errs.Wrap(err, errs.VFSIO, "cannot read the web runtime")
 	}
 	h := sha256.New()
 	h.Write([]byte(j.rep.Hash))
 	h.Write(wasm)
 	for _, s := range scripts {
 		h.Write(s)
 	}
 	return hex.EncodeToString(h.Sum(nil))[:buildKeyLen], nil
 }
 func (j *job) packWeb() error {
 	src, err := wasmExecPath(j.goroot)
 	if err != nil {
@@ -176,9 +193,9 @@ func (j *job) packWeb() error {
 	if err := writeFile(filepath.Join(j.l.data, WebFiles), list, WebFiles); err != nil {
 		return err
 	}
-	build := j.rep.Hash
+	build, err := j.webBuild(exec, loader)
-	if len(build) > buildKeyLen {
+	if err != nil {
-		build = build[:buildKeyLen]
+		return err
 	}
 	var page bytes.Buffer
 	if err := webIndexTmpl.Execute(&page, webPage{Title: j.webTitle(), Build: build, Icon: j.icon != nil}); err != nil {
@@ -22,14 +22,10 @@ canvas { display: block; width: 100%; height: 100%; outline: none; touch-action:
 #fullscreen:hover { opacity: 1; }
 #mute { position: fixed; top: 10px; right: 52px; width: 36px; height: 36px; border: 0; border-radius: 6px; background: rgba(0, 0, 0, 0.45); color: #fff; padding: 0; cursor: pointer; opacity: 0.5; }
 #mute:hover { opacity: 1; }
-#music { position: fixed; top: 10px; right: 94px; width: 36px; height: 36px; border: 0; border-radius: 6px; background: rgba(0, 0, 0, 0.45); color: #fff; padding: 0; cursor: pointer; opacity: 0.5; }
+#fullscreen svg, #mute svg { display: block; width: 18px; height: 18px; margin: auto; }
-#music:hover { opacity: 1; }
+#mute .off, #mute.muted .on { display: none; }
-#fullscreen svg, #mute svg, #music svg { display: block; width: 18px; height: 18px; margin: auto; }
+#mute.muted .off { display: inline; }
 #mute .off, #mute.muted .on, #music .off { display: none; }
 #mute.muted .off, #music.muted .off { display: inline; }
 #music.muted .note { opacity: 0.55; }
 </style>
 <link rel="preload" href="game.wasm?v={{.Build}}" as="fetch" type="application/wasm" crossorigin>
 </head>
 <body>
 <canvas id="game" data-aego tabindex="0" aria-label="{{.Title}}"></canvas>
@@ -40,7 +36,6 @@ canvas { display: block; width: 100%; height: 100%; outline: none; touch-action:
  <pre id="error" hidden></pre>
 </div>
 <button id="fullscreen" type="button" title="Fullscreen" aria-label="Fullscreen" hidden><svg viewBox="0 0 16 16" aria-hidden="true"><path fill="currentColor" d="M9.92 13.44L10.25 13.38L13.38 13.38L13.38 10.25L13.44 9.92L13.76 9.52L14.08 9.39L14.58 9.44L14.98 9.76L15.12 10.25L15.12 14.25L15.06 14.58L14.74 14.98L14.25 15.12L10.25 15.12L9.92 15.06L9.52 14.74L9.38 14.25L9.52 13.76ZM13.44 6.08L13.38 5.75L13.38 2.62L10.25 2.62L9.92 2.56L9.52 2.24L9.39 1.92L9.44 1.42L9.76 1.02L10.25 0.88L14.25 0.88L14.58 0.94L14.98 1.26L15.12 1.75L15.12 5.75L15.06 6.08L14.74 6.48L14.25 6.62L13.76 6.48ZM2.56 9.92L2.62 10.25L2.62 13.38L5.75 13.38L6.08 13.44L6.48 13.76L6.62 14.25L6.56 14.58L6.24 14.98L5.75 15.12L1.75 15.12L1.42 15.06L1.02 14.74L0.88 14.25L0.88 10.25L0.94 9.92L1.26 9.52L1.75 9.38L2.24 9.52ZM6.08 2.56L5.75 2.62L2.62 2.62L2.62 5.75L2.56 6.08L2.24 6.48L1.75 6.62L1.42 6.56L1.02 6.24L0.88 5.75L0.88 1.75L0.94 1.42L1.26 1.02L1.75 0.88L5.75 0.88L6.08 0.94L6.48 1.26L6.62 1.75L6.48 2.24Z"/></svg></button>
 <button id="music" type="button" title="Music off" aria-label="Music off" hidden><svg viewBox="0 0 16 16" aria-hidden="true"><g class="note" fill="currentColor"><path d="M5.6 3.4L13.6 1.4V3.5L5.6 5.5Z"/><path d="M5.6 4H6.9V12.3H5.6ZM12.3 1.8H13.6V10.5H12.3Z"/><ellipse cx="4.3" cy="12.4" rx="2.3" ry="1.7" transform="rotate(-20 4.3 12.4)"/><ellipse cx="11" cy="10.6" rx="2.3" ry="1.7" transform="rotate(-20 11 10.6)"/></g><path class="off" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" d="M2 2L14 14"/></svg></button>
 <button id="mute" type="button" title="Mute" aria-label="Mute" hidden><svg viewBox="0 0 16 16" aria-hidden="true"><path fill="currentColor" d="M1.81 6.04L4 6L6.74 3.47L7.11 3.41L7.36 3.55L7.5 3.9L7.5 12.1L7.36 12.45L7.11 12.59L6.74 12.53L4 10L2 10L1.65 9.85L1.5 9.5L1.5 6.5L1.58 6.22Z"/><path class="on" fill="currentColor" d="M12.53 5.89L11.97 4.96L11.01 3.9L10.95 3.62L10.99 3.33L11.15 3.08L11.39 2.91L11.82 2.86L12.21 3.05L12.72 3.54L13.53 4.59L13.91 5.29L14.17 5.95L14.35 6.63L14.5 7.96L14.46 8.75L14.34 9.45L14.14 10.13L13.58 11.34L13.18 11.92L12.67 12.52L12.09 13.04L11.67 13.15L11.39 13.09L11.15 12.92L10.99 12.67L10.95 12.38L11.09 11.97L11.61 11.46L12.27 10.59L12.73 9.61L12.88 9.08L12.97 8.54L12.97 7.46L12.73 6.39ZM10.05 7.09L9.82 6.68L9.38 6.19L9.26 5.77L9.31 5.48L9.48 5.24L9.72 5.08L10.01 5.02L10.29 5.08L10.54 5.24L11.01 5.76L11.27 6.16L11.66 7.18L11.75 8.04L11.58 9.12L11.23 9.91L10.54 10.76L10.29 10.92L10.01 10.98L9.72 10.92L9.48 10.76L9.31 10.52L9.26 10.23L9.38 9.81L9.95 9.12L10.2 8.47L10.24 7.76Z"/><path class="off" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" d="M10.25 5.75l4.5 4.5M14.75 5.75l-4.5 4.5"/></svg></button>
 <script src="wasm_exec.js?v={{.Build}}"></script>
 <script src="loader.js?v={{.Build}}"></script>
@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"os"
 	"path/filepath"
 	"regexp"
 	"strings"
 	"testing"
@@ -60,9 +61,16 @@ func TestPackWeb(t *testing.T) {
 	if !strings.Contains(string(page), "&lt;Game &amp;") || strings.Contains(string(page), "<Game") {
 		t.Fatal("the title is not escaped")
 	}
-	if !strings.Contains(string(page), `data-build="abababababab"`) {
+	key := regexp.MustCompile(`data-build="([0-9a-f]{12})"`).FindStringSubmatch(string(page))
 	if key == nil {
 		t.Fatal("the build key is missing")
 	}
 	if err := os.WriteFile(j.l.binary(), append(wasm, '!'), 0o644); err != nil {
 		t.Fatal(err)
 	}
 	if again, err := j.webBuild(); err != nil || again == key[1] {
 		t.Fatalf("a new runtime kept the build key %s (%v)", again, err)
 	}
 	raw, err := os.ReadFile(filepath.Join(j.l.data, WebFiles))
 	if err != nil {
 		t.Fatal(err)
@@ -198,6 +198,11 @@ func (g *Game) Engine() *engine.Engine {
 	return g.e
 }
 // Scene is the scene Play loaded, nil before the first Play or after Stop.
 func (g *Game) Scene() *scene.Scene {
 	return g.scene
 }
 func (g *Game) Play(name string, src []byte, mods []*bytecode.Module) error {
 	g.Stop()
 	rt := scriptruntime.New(scriptruntime.Options{Bindings: g.reg, Schema: g.types.Schema(), Log: g.log, VM: playmods.SandboxVM()})
@@ -9,6 +9,10 @@ import (
 	"aego/app/agent"
 	"aego/core/log"
 	"aego/core/rewind"
 	"aego/engine/recorder"
 	"aego/modules/audio"
 	"aego/modules/camera"
 	"aego/modules/gameplay"
 	"aego/project"
 	"aego/sdk"
 )
@@ -45,6 +49,7 @@ func AgentRunner(mods ...sdk.Module) agent.Runner {
 		}
 		sum, _, _ := WorldHash(a.Engine.MainWorld(), rewind.NewHasher())
 		rep.Hash = hex.EncodeToString(sum[:])
 		rep.Counters = counters(a)
 		a.Close()
 		rep.Log = logLines(buf.String())
 		return rep, nil
@@ -63,3 +68,27 @@ func logLines(s string) []string {
 	}
 	return out
 }
 // counters sums what the modules counted during the run, for scene run and run_headless.
 func counters(a *App) map[string]uint64 {
 	out := map[string]uint64{}
 	w := a.Engine.MainWorld()
 	if s := gameplay.Of(w); s != nil {
 		st := s.Stats()
 		out["gameplay.steps"], out["gameplay.casts"], out["gameplay.hits"] = st.Steps, st.Casts, st.Hits
 		out["gameplay.deaths"], out["gameplay.respawns"], out["gameplay.pickups"] = st.Deaths, st.Respawns, st.Pickups
 	}
 	if c := camera.Of(w); c != nil {
 		c.Outputs(func(camera.OutputInfo) { out["camera.outputs"]++ })
 	}
 	if m := audio.ModuleOf(a.Engine); m != nil {
 		c, st := m.Counts(), m.Stats()
 		out["audio.finished"], out["audio.stolen"], out["audio.rejected"], out["audio.starved"] = c.Finished, c.Stolen, c.Rejected, c.Starved
 		out["audio.underruns"] = st.Underruns
 	}
 	if r := w.Recorder; r != nil {
 		counts := r.Counts()
 		out["events.audio"], out["events.gameplay"] = counts[recorder.Audio], counts[recorder.Gameplay]
 	}
 	return out
 }
@@ -80,6 +80,7 @@ type bus struct {
 	target  float32
 	delta   float32
 	ramp    int
 	live    bool
 	acc     []float32
 	peak    atomic.Uint32
 	rms     atomic.Uint32
@@ -441,3 +441,87 @@ func TestVoicePositionAndKill(t *testing.T) {
 		t.Fatalf("kill: %+v, live %v", ev, m.Live(id))
 	}
 }
 func directPair(tb testing.TB, mem *Memory, loop bool) (*Mixer, voice, voice) {
 	m := newMixer(tb)
 	m.Play(PlayParams{Memory: mem, Gain: 0.7, Pan: 0.3, Loop: loop, FadeIn: 0.005})
 	buf := make([]float32, 64*2)
 	m.Mix(buf)
 	for i := range m.voices {
 		if m.voices[i].state == voicePlaying {
 			return m, m.voices[i], m.voices[i]
 		}
 	}
 	tb.Fatal("no playing voice")
 	return nil, voice{}, voice{}
 }
 // The direct path for pitch 1 gives the same samples, position, gain and end as Hermite, through fades, loops and the stop ramp.
 func TestDirectPathMatchesHermite(t *testing.T) {
 	for _, ch := range []int{1, 2} {
 		for _, loop := range []bool{false, true} {
 			mem := sine(440, rate/20, ch, 0.5)
 			if loop {
 				mem.LoopStart, mem.LoopEnd = 100, mem.Frames()-50
 			}
 			m, a, b := directPair(t, mem, loop)
 			if b.step != 1 {
 				t.Fatalf("step %v, the direct path needs 1", b.step)
 			}
 			const n = 256
 			accA, accB := make([]float32, n*2), make([]float32, n*2)
 			for block := 0; block < 40; block++ {
 				if block == 20 {
 					a.rampTo(0, 300)
 					b.rampTo(0, 300)
 					a.stopping, b.stopping = true, true
 				}
 				clear(accA)
 				clear(accB)
 				da := m.renderMemory(&a, accA, n)
 				db := m.renderMemoryDirect(&b, accB, n)
 				if da != db || a.pos != b.pos || a.gain != b.gain {
 					t.Fatalf("ch=%d loop=%v block %d: done %v/%v pos %v/%v gain %v/%v", ch, loop, block, da, db, a.pos, b.pos, a.gain, b.gain)
 				}
 				for i := range accA {
 					if accA[i] != accB[i] {
 						t.Fatalf("ch=%d loop=%v block %d sample %d: %v != %v", ch, loop, block, i, accA[i], accB[i])
 					}
 				}
 				if da {
 					break
 				}
 			}
 		}
 	}
 }
 func loadedPitch1(tb testing.TB) (*Mixer, []float32) {
 	m := newMixer(tb)
 	mem := sine(440, rate/10, 1, 0.5)
 	for i := 0; i < 64; i++ {
 		m.Play(PlayParams{Memory: mem, Gain: 0.1, Pan: float32(i%3 - 1), Pitch: 1, Loop: true})
 	}
 	buf := make([]float32, 512*2)
 	m.Mix(buf)
 	if m.Active() != 64 {
 		tb.Fatalf("%d active voices", m.Active())
 	}
 	return m, buf
 }
 func TestMixPitch1Allocs(t *testing.T) {
 	m, buf := loadedPitch1(t)
 	if n := testing.AllocsPerRun(200, func() { m.Mix(buf) }); n != 0 {
 		t.Fatalf("Mix allocates %v times per call", n)
 	}
 }
 func BenchmarkMix64Pitch1(b *testing.B) {
 	m, buf := loadedPitch1(b)
 	b.ReportAllocs()
 	b.ResetTimer()
 	for b.Loop() {
 		m.Mix(buf)
 	}
 }
@@ -141,7 +141,7 @@ func (p *Pump) Start() {
 func (p *Pump) run(stop, done chan struct{}) {
 	defer close(done)
-	period := time.Duration(float64(p.cfg.Block) / float64(p.cfg.SampleRate) / 2 * float64(time.Second))
+	period := time.Duration(float64(p.cfg.Block*p.cfg.Target) / float64(p.cfg.SampleRate) / 6 * float64(time.Second))
 	t := time.NewTicker(max(period, time.Millisecond))
 	defer t.Stop()
 	for {
@@ -102,3 +102,33 @@ func TestAgentSceneTreeJSON(t *testing.T) {
 		t.Fatalf("output %v:\n%s", err, out)
 	}
 }
 // The top-down example needs no native module, so the CLI can run it from a copy.
 func TestAgentSceneRunCounters(t *testing.T) {
 	dir := copyProject(t, "topdown")
 	r, w, err := os.Pipe()
 	if err != nil {
 		t.Fatal(err)
 	}
 	stdout := os.Stdout
 	os.Stdout = w
 	code := dispatch([]string{"scene", "run", "scenes/main.aescene", "--frames", "300", "--json", "--project", dir})
 	os.Stdout = stdout
 	w.Close()
 	out, _ := io.ReadAll(r)
 	if code != 0 {
 		t.Fatalf("exit %d:\n%s", code, out)
 	}
 	var v struct {
 		Value struct {
 			Counters map[string]uint64 `json:"counters"`
 		} `json:"value"`
 	}
 	if err := json.Unmarshal(out, &v); err != nil {
 		t.Fatalf("output %v:\n%s", err, out)
 	}
 	c := v.Value.Counters
 	if c["gameplay.steps"] == 0 || c["camera.outputs"] != 1 {
 		t.Fatalf("counters %v, want gameplay steps and one camera output", c)
 	}
 }
@@ -0,0 +1,37 @@
 # Contributing
 ## Build and run
 ```sh
 bash tools/bootstrap-native.sh
 make cli
 .cache/bin/aego edit examples/platformer
 ```
 `make res` regenerates icons, previews and ES shaders; `make golden-update` rewrites golden images after an intended UI change.
 ## Check levels
 | Level | When | Command |
 |---|---|---|
 | 1 | after an edit | `make quick`: build and short tests of the packages your change touches and everything that imports them |
 | 2 | before a commit | `make affected`, plus `make check-camera`, `check-audio`, `check-gameplay`, `check-mutate`, `check-editor`, `check-web` or `check-docs` for the areas you touched, and `make golden` after UI changes |
 | 3 | before a push or a tag | `make ci` |
 `tools/affected.sh [base]` lists the affected packages (default base `origin/master`, uncommitted files included). The CI server always runs the full `make ci`.
 ## Rules for engine code
 - **Modules talk through contracts.** A module never imports another module: shared types and services live in `contracts/` (`physics2d`, `camera2d`, `scriptcall`, `signals`, `debugdraw`, …). `tools/depcheck` enforces the import rules; an exception goes into `tools/depcheck/exceptions.txt` with its file and reason.
 - **Kernel stays neutral.** Kernel, editor and `sdk` never name a built-in module, its components or its diagnostic codes in string literals; names come from the module catalog.
 - **Every component has a Try it scene.** It lives at `res/docs/try/<Component>.aescene` (with `<Component>.aes` and prefabs next to it when needed), shows the component's own effect and runs without warnings; `aego docs check` fails without it.
 - **Internal state is not a component.** Controller state lives in unexported fields of the component it belongs to or in a world service. A component that exists only to carry state for a service is registered `Hidden`: it is not in Create, Add Component, Try it or the docs.
 - **Requirements add, they do not block.** Declare `Requires`; Add Component, `scene add-comp`, Paste and presets add the missing components in the same undo step.
 - **Every diagnostic code has a page with an example.** Component codes (`CAM`, `AUD`, `GMP`, `PHY`, …) also have an example scene that produces the code; `aego docs check` fails without one. Asset codes say `scope: asset`, codes that only an edit during Play produces say `scope: play`.
 - **Nodes are labelled, not pathed.** UI shows nodes with `props.NodeLabel` (icon and name, the path in the tooltip).
 - **Editor edits go through history.** Every edit is a history command, normally `commands.Mutation`, so Undo, the Play changes diff and agents see it.
 - **Hot paths do not allocate.** Systems, mixers and controllers allocate nothing per frame; add `testing.AllocsPerRun` checks and a benchmark next to new hot code.
 ## Commits
 One commit per sub-stage, named `Stage <n><x>: <what>`; decisions go into `ARCHITECTURE.md` as `D<number>` in the same commit.
@@ -97,6 +97,16 @@ sdk.Component[Wind](r, sdk.Name("weather.Wind")).
 `engine/problems` collects `sdk.Diagnostic{Owner, Code, Severity, Message, Subject, BlocksPlay}` from sources with a revision; the service rebuilds the list only when a revision changes. `sdk.Diagnostics(ctx)` in `Init` returns the service; a module adds runtime diagnostics as a `sdk.ProblemSource` from `AttachWorld` and removes it in `DetachWorld`. The Problems panel shows them with the owner as category; an error with `BlocksPlay` stops Play (D210).
 Every code a module reports is listed in `Info.Codes` and has a page `res/docs/diagnostics/<CODE>.md` with front matter `code`, `title`, `severity` (`error`, `warning` or `info`) and either `example: <CODE>.aescene`, a scene next to the page that produces the code (with `<CODE>.aes` next to it when a script has to act, as for PHY007), `scope: asset` for codes that come from importing or checking an asset, or `scope: play` for codes that only an edit during Play produces (PHY006). `aego docs check` fails on a declared code without a page, a page whose code is not declared, a component code without an example, and an example that does not produce its code after `module.ValidateScene` and 60 headless frames. The pages appear under Reference → Diagnostics next to the script codes (D146, D316).
 ### Contracts between modules
 A module never imports another module. What two modules share lives in `contracts/<name>` as plain types, a service ID and an interface; the provider registers the service in its world, the consumer looks it up with `engine.ServiceOf` and works without it.
 - **Provisions.** A value handed over at load time, keyed by a kind. `camera2d.AccessibilityKind` (`"camera2d.accessibility"`) carries the IDs of the Screen Shake and Reduce Motion settings: the settings module provides them with `r.Provide(camera2d.AccessibilityKind, camera2d.Accessibility{...})`, the camera module reads `ctx.Provided(camera2d.AccessibilityKind)` in `Init` and scales shake by them every frame.
 - **`physics2d.Queries`** (`physics2d.ServiceID`). Ray, point, circle and box queries; shape casts `CastCircle`, `CastBox`, `CastCapsule` and `CastBody`, which sweeps every non-trigger collider of a body and returns the first hit with its fraction, normal and, when the shapes already overlap, `Initial` and `Depth`; `Penetration` lists the overlaps of a body for depenetration; `BodyPose`, `BodyVelocity`, `MoveKinematic` (moves a kinematic body so contacts see its velocity), `Teleport`, `ApplyImpulse` and `Gravity`. `QueryFilter` selects layers and triggers; `SkipDynamic` ignores dynamic bodies, and `ExcludeNode` and `ExcludeBody` skip the caller's own collider or body. The gameplay controller is written only against this interface.
 - **`scriptcall.Caller`** (`scriptcall.ServiceID`). `Method(node, name, params)` finds a plain method by name in the scripts on a node and returns a `Ref`; `Call(&ref, args)` runs it. A hot reload starts a new `Generation`, which makes every older `Ref` stale: look the method up again when `Ref.Gen` differs. The State Machine finds its hooks this way.
 ### Resources
 Module icons are named `<owner>.*` or `cat.<owner>`; a clash with the engine atlas or another module is a build error. Built-in modules list their icon sources through `IconDir()`. Docs registered with `Registry.Docs` carry the module as owner and are left out of runtime builds (D211).
@@ -169,4 +179,6 @@ A panel gets a fresh `Frame` every draw (`UI`, drag and drop, time, focus). Anyt
 A module can give any of its components a live example on the documentation site: put a scene in `res/docs/try/<Component>.aescene`, named after the last part of the component ID (`try/Body2D.aescene` for `physics.Body2D`). The page of that component gets a Try it block that runs the scene in the browser with the Inspector, selecting the first node that has the component; a guide page can show a scene with `try: try/name.aescene` and `try_select: module.Component` in its front matter.
-Try scenes run on the sandbox catalog (core, input, render2d, scripting, physics, debug) with builtin assets only and no scripts. `aego docs check` loads each one, runs it for 60 frames and fails on a load error, a warning or a fault, and on a scene of a module outside the sandbox. Keep the scene to what the component needs, put the documented node first, and add a camera.
+Try scenes run on the docs runtime catalog (core, input, render2d, render3d, scripting, physics, debug, tween, cameras, gameplay, spawn, savegame and audio) with builtin assets only. A script `<Component>.aes` and prefabs `<Component>.<name>.aeprefab` (with their `.meta`) next to the scene are compiled and mounted with it. `aego docs check` loads each one, runs it for 60 frames and fails on a load error, a warning or a fault, and on a scene of a module outside the catalog. Keep the scene to what the component needs, put the documented node first, and add a camera.
 Every visible component needs one. A component registered `Hidden`, which only carries state for a service, has none and is left out of Create, Add Component, Try it and the docs. The rules for engine code, including these, are in [contributing.md](contributing.md).
@@ -61,8 +61,10 @@ Sources are `<id>.svg` files in `engine/res/icons/src` and `modules/<id>/res/ico
 | `edit.paste` | engine | 16 | Paste (nodes, assets, inspector field) | ok |
 | `edit.rename` | engine | 16 | Rename (nodes, assets, workspace) | ok |
 | `edit.select_all` | engine | 16 | Edit → Select All | ok |
 | `file.audio` | engine | 16 | Documentation: sound clips page | ok |
 | `file.autosave` | engine | 16 | File → Autosave Scripts | ok |
 | `file.data` | engine | 24 | Assets: data asset tiles | ok |
 | `file.download` | engine | 16 | Documentation: Install and run page | ok |
 | `file.folder` | engine | 24 | Assets: folders | ok |
 | `file.mesh` | engine | 24 | Assets: mesh tiles | ok |
 | `file.open` | engine | 16 | Assets menu: Open | ok |
@@ -134,6 +136,7 @@ Sources are `<id>.svg` files in `engine/res/icons/src` and `modules/<id>/res/ico
 | `prefab.variant` | engine | 16 | Assets menu: Create Variant | ok |
 | `shape.cube` | engine | 16 | template render3d.cube | ok |
 | `shape.cylinder` | engine | 16 | template render3d.cylinder | ok |
 | `shape.dice` | engine | 16 | Documentation: random numbers module | ok |
 | `shape.plane` | engine | 16 | template render3d.plane | ok |
 | `shape.sphere` | engine | 16 | template render3d.sphere | ok |
 | `status.busy` | engine | 14 | Task Center: running task | ok |
@@ -151,6 +154,7 @@ Sources are `<id>.svg` files in `engine/res/icons/src` and `modules/<id>/res/ico
 | `ui.chevron_down` | engine | 16 | trees, combos and drop-downs | ok |
 | `ui.chevron_right` | engine | 16 | trees and submenus | ok |
 | `ui.close` | engine | 16 | tabs, chips and dialogs | ok |
 | `ui.curve` | engine | 16 | Documentation: curves module | ok |
 | `ui.lock` | engine | 16 | Inspector: locked | ok |
 | `ui.minus` | engine | 16 | list editors: remove | ok |
 | `ui.more` | engine | 16 | card menus | ok |
@@ -43,10 +43,12 @@ type Env struct {
 	Types  *scene.Types
 	Res    asset.Resolver
 	OnAdd  func(*schema.TypeDescriptor) func(*scene.Scene, scene.NodeHandle)
 	Notify func(string)
 }
 func EnvOf(ctx *context.Editor) Env {
 	e := Env{Clip: ctx.Clipboard, Types: ctx.Types, OnAdd: ctx.OnAdd}
 	e.Notify = func(text string) { ctx.Notify(context.LevelWarn, text) }
 	if ctx.Loader != nil {
 		e.Res = ctx.Loader
 	}
@@ -0,0 +1,77 @@
 package clipboard
 import (
 	"testing"
 	"aego/core/ids"
 	"aego/core/log"
 	"aego/editor/core/command"
 	"aego/editor/core/context"
 	"aego/editor/core/document"
 	"aego/editor/core/selection"
 	"aego/engine/module"
 	"aego/scene"
 	"aego/scene/sceneio"
 	"aego/schema"
 )
 type reqBase struct {
 	A float32 `aego:"a"`
 }
 type reqNeeds struct {
 	B float32 `aego:"b"`
 }
 type reqModule struct{}
 func (reqModule) Info() module.Info { return module.Info{ID: "reqtest"} }
 func (reqModule) Register(r *module.Registry) error {
 	if err := module.Component[reqBase](r, schema.Name("reqtest.Base")).Err(); err != nil {
 		return err
 	}
 	return module.Component[reqNeeds](r, schema.Name("reqtest.Needs")).Requires("reqtest.Base").Err()
 }
 // Pasting a component adds what it requires in the same undo step (D144).
 func TestPasteAddsRequiredComponents(t *testing.T) {
 	types := scene.NewTypes(schema.NewRegistry())
 	if err := sceneio.RegisterUnknown(types); err != nil {
 		t.Fatal(err)
 	}
 	if _, err := module.Load(types, nil, reqModule{}); err != nil {
 		t.Fatal(err)
 	}
 	if err := types.Schema().Freeze(); err != nil {
 		t.Fatal(err)
 	}
 	s := scene.New(types, nil, scene.Options{})
 	src := s.Create(s.Root(), "Src")
 	dst := s.Create(s.Root(), "Dst")
 	scene.Add[reqBase](s, src)
 	scene.Add[reqNeeds](s, src).B = 4
 	s.Flush()
 	m := document.NewManager(document.Options{Root: t.TempDir(), Types: types, Log: log.Nop()})
 	d := m.New("scenes/r.aescene", s)
 	ctx := &context.Editor{Types: types, Docs: m, Selection: selection.New(), Commands: command.New(), Clipboard: &fakeClip{}}
 	needs, _ := types.Schema().ByName("reqtest.Needs")
 	if err := CopyComponent(ctx, s, s.ID(src), needs.ID); err != nil {
 		t.Fatal(err)
 	}
 	if err := PasteComponent(ctx, d, []ids.NodeID{s.ID(dst)}); err != nil {
 		t.Fatal(err)
 	}
 	if !scene.Has[reqBase](s, dst) || !scene.Has[reqNeeds](s, dst) {
 		t.Fatal("paste did not add the required Base")
 	}
 	if n, _ := scene.Get[reqNeeds](s, dst); n.B != 4 {
 		t.Fatalf("pasted value %v", n.B)
 	}
 	if err := d.History.Undo(); err != nil {
 		t.Fatal(err)
 	}
 	if scene.Has[reqBase](s, dst) || scene.Has[reqNeeds](s, dst) {
 		t.Fatal("one Undo must remove both")
 	}
 }
@@ -10,6 +10,7 @@ import (
 	"aego/editor/core/history"
 	"aego/editor/core/history/commands"
 	"aego/scene"
 	"aego/scene/mutate"
 	"aego/scene/sceneio"
 	"aego/scene/scriptcomp"
 	"aego/schema"
@@ -32,6 +33,18 @@ func (e Env) pasteInto(tx *history.Transaction, d *document.SceneDocument, nodes
 			if !s.Accepts(h, td.ID) {
 				continue
 			}
 			req, err := mutate.Required(s, td, h)
 			if err != nil {
 				if e.Notify != nil {
 					e.Notify(s.Name(h) + ": " + err.Error())
 				}
 				continue
 			}
 			for _, r := range req {
 				if err := tx.Exec(commands.NewMutation("Add "+r.FullName, env, commands.AddComp(s, n, r, nil))); err != nil {
 					return err
 				}
 			}
 			if err := tx.Exec(commands.NewMutation("Add "+td.FullName, env, commands.AddComp(s, n, td, values))); err != nil {
 				return err
 			}
@@ -30,6 +30,9 @@ type ProfilerSection struct {
 	Draw  func()
 }
 // OverlayGame is the flag of Window → Game View Overlays; module overlays and debug channels in the Game View follow it.
 const OverlayGame = "view.game.overlays"
 type Overlays struct {
 	on    map[string]bool
 	Scale float32
@@ -1,39 +1,16 @@
 package gizmo
 import (
-	"aego/core/errs"
+	"aego/core/ids"
 	"aego/editor/core/history/commands"
 	"aego/editor/core/props"
 	"aego/schema"
 )
 func SetProperty(e *EditCtx, t schema.TypeID, fd *schema.FieldDescriptor, v schema.Value) {
-	if e.Err != nil || e.Tx == nil || fd == nil {
+	if e.Err != nil || e.Tx == nil || fd == nil || e.Scene.Handle(e.Node).IsZero() {
 		return
 	}
-	h := e.Scene.Handle(e.Node)
+	if err := props.New(e.Scene, nil).Set(e.Tx, []ids.NodeID{e.Node}, t, fd.ID, v); err != nil {
 	if h.IsZero() {
 		return
 	}
 	td, ok := e.Scene.Registry().ByID(t)
 	if !ok {
 		e.Err = errs.New(errs.SchemaUnknownType, "component type is not registered")
 		return
 	}
 	nv, err := props.Normalize(fd, v)
 	if err != nil {
 		e.Err = err
 		return
 	}
 	before, err := e.Scene.GetProperty(h, t, fd.ID)
 	if err != nil {
 		e.Err = err
 		return
 	}
 	if props.Equal(before, nv) {
 		return
 	}
 	if err := e.Tx.Exec(commands.SetField(e.Scene, e.Node, td, fd, nv, props.Label(fd))); err != nil {
 		e.Err = err
 	}
 }
@@ -58,7 +58,9 @@ var Editor = []module.IconUse{
 	use("edit.paste", 16, "Paste (nodes, assets, inspector field)"),
 	use("edit.rename", 16, "Rename (nodes, assets, workspace)"),
 	use("edit.select_all", 16, "Edit → Select All"),
 	use("file.audio", 16, "Documentation: sound clips page"),
 	use("file.autosave", 16, "File → Autosave Scripts"),
 	use("file.download", 16, "Documentation: Install and run page"),
 	use("file.data", 24, "Assets: data asset tiles"),
 	use("file.folder", 24, "Assets: folders"),
 	use("file.mesh", 24, "Assets: mesh tiles"),
@@ -74,6 +76,8 @@ var Editor = []module.IconUse{
 	use("file.texture", 24, "Assets: texture tiles"),
 	use("file.unknown", 24, "Assets: tiles of other kinds"),
 	use("help.about", 16, "Help → About Aego"),
 	use("shape.dice", 16, "Documentation: random numbers module"),
 	use("ui.curve", 16, "Documentation: curves module"),
 	use("help.book", 16, "Documentation tab"),
 	use("log.error", 16, "Console: errors"),
 	use("log.info", 16, "Console: info"),
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
sanspie	3d8e3b2fd3	Web export: the page build key covers the runtime and scripts, so a new engine gets new immutable URLs ci-platforms / build (amd64, windows, windows-2022) (push) Skipped Details ci-platforms / build (arm64, darwin, macos-15) (push) Skipped Details ci-platforms / build (amd64, darwin, macos-15-intel) (push) Skipped Details ci / release (push) Successful in 5m0s Details ci / checks (push) Successful in 3m50s Details ci / build (amd64, linux, ubuntu-24.04) (push) Successful in 4m21s Details	2026-10-22 19:26:12 +03:00
sanspie	c6a24ba393	Try it: scene keys in the hint, J label on Health and Hurtbox, faster Respawn, sound starts with the Try click; lighter web audio pump; release notes from tools/release/notes ci-platforms / build (amd64, windows, windows-2022) (push) Skipped Details ci-platforms / build (amd64, darwin, macos-15-intel) (push) Skipped Details ci-platforms / build (arm64, darwin, macos-15) (push) Skipped Details ci / release (push) Successful in 7m34s Details ci / checks (push) Successful in 2m53s Details ci / build (amd64, linux, ubuntu-24.04) (push) Successful in 5m2s Details	2026-10-22 18:55:33 +03:00
sanspie	7dca06e4b1	Icons in the engine style for gameplay, shake, clips, curves, dice, debug draw and install; web loader retries a stalled download ci-platforms / build (amd64, darwin, macos-15-intel) (push) Skipped Details ci-platforms / build (amd64, windows, windows-2022) (push) Skipped Details ci-platforms / build (arm64, darwin, macos-15) (push) Skipped Details ci / build (amd64, linux, ubuntu-24.04) (push) Successful in 17m5s Details ci / release (push) Successful in 9m30s Details ci / checks (push) Successful in 2m25s Details	2026-10-22 17:38:02 +03:00
sanspie	6dfdb824e2	Stage 10d3b: physics debug layers follow Game View overlays, PHY diagnostics pages ci / checks (push) Successful in 3m4s Details ci-platforms / build (amd64, darwin, macos-15-intel) (push) Skipped Details ci-platforms / build (amd64, windows, windows-2022) (push) Skipped Details ci-platforms / build (arm64, darwin, macos-15) (push) Skipped Details ci / build (amd64, linux, ubuntu-24.04) (push) Successful in 3m53s Details ci / release (push) Successful in 5m37s Details	2026-10-22 16:25:06 +03:00
sanspie	de49a53172	Stage 10d3: docs, site demo, check levels, boundary audit (D316) ci-platforms / build (amd64, windows, windows-2022) (push) Skipped Details ci-platforms / build (arm64, darwin, macos-15) (push) Skipped Details ci / checks (push) Successful in 21m50s Details ci / build (amd64, linux, ubuntu-24.04) (push) Successful in 6m46s Details ci-platforms / build (amd64, darwin, macos-15-intel) (push) Skipped Details ci / release (push) Successful in 17m42s Details	2026-10-22 16:00:33 +03:00
sanspie	1030dc9a43	Stage 10d2: audio fast path, shutdown order, profiler and monitor sections ci-platforms / build (amd64, darwin, macos-15-intel) (push) Skipped Details ci-platforms / build (amd64, windows, windows-2022) (push) Skipped Details ci-platforms / build (arm64, darwin, macos-15) (push) Skipped Details ci / checks (push) Successful in 4m58s Details ci / build (amd64, linux, ubuntu-24.04) (push) Successful in 27m47s Details ci / release (push) Successful in 11m57s Details	2026-10-22 14:41:24 +03:00
sanspie	3d25734dfa	Stage 10d1: add-component requirements, play diff from history, node labels; one sound button on the web ci-platforms / build (amd64, darwin, macos-15-intel) (push) Skipped Details ci-platforms / build (amd64, windows, windows-2022) (push) Skipped Details ci-platforms / build (arm64, darwin, macos-15) (push) Skipped Details ci / build (amd64, linux, ubuntu-24.04) (push) Failing after 1s Details ci / checks (push) Failing after 1s Details ci / release (push) Skipped Details	2026-10-22 13:29:11 +03:00
sanspie	12f628c469	Stage 10c3: platformer and top-down examples on the gameplay kit, new music	2026-10-22 12:16:37 +03:00
sanspie	1529213434	Stage 10c2: health, hitboxes, zones, respawn, pickups, lifetime, templates, StateMachine, gameplay editor tools (D313, D330, D332)	2026-10-22 10:53:54 +03:00
sanspie	f8bb865920	Stage 10c1: shape casts and Motion2D (D312, D328, D329)	2026-10-22 03:01:46 +03:00
sanspie	f5fb32565e	Stage 10b3: desktop onboarding, app icon, clip inspector, asset grid audio cards, web audio and docs fixes (D327)	2026-10-22 03:01:46 +03:00
sanspie	f1a8f538d3	Stage 10b: audio mixer, codecs, clips, events, sources, zones and mixer UI (D307–D311, D321–D326)	2026-10-21 20:33:25 +03:00
sanspie	963b01a011	Docs: Try it for every component, quieter design, self-hosted fonts, OS downloads, page meta	2026-10-21 19:20:52 +03:00
sanspie	6aec9dc544	Stage 10a: virtual cameras, blends and zones (D305, D306); release 0.9.0-beta.1 ci / build (amd64, linux, ubuntu-24.04) (push) Failing after 1s Details ci / checks (push) Failing after 1s Details ci / release (push) Skipped Details	2026-10-21 02:37:55 +03:00
sanspie	70a0111deb	Docs overhaul: redesigned site, Try it, runnable Script API examples, edge deploy (D301–D303)	2026-10-20 20:11:47 +03:00
sanspie	0da2549d91	Stage 9.6d: agent layer, CLI and MCP server, external edits in the editor (D297, D299, D300)	2026-10-20 14:06:22 +03:00
sanspie	810984ae7a	Stage 9.6c: project refs, refactorings, prefab apply and data editing without the editor (D298)	2026-10-20 13:05:10 +03:00
sanspie	62c8129364	Stage 9: gameplay toolkit, export and web, agent tooling	2026-10-20 12:06:56 +03:00
sanspie	674af03a65	Stage 8: physics and module boundaries; CI on master	2026-10-16 12:10:43 +03:00
sanspie	6b0d006467	Stage 7: documentation, help, playground; templates, aego new/bootstrap/icons, launcher; push-to-deploy site	2026-10-14 22:40:20 +03:00
sanspie	ff7e95afe4	Stage 6: coroutines, signals, ScriptRef, workspace CLI, editor tooling	2026-10-12 14:22:08 +03:00
sanspie	67b16d3da5	Stage 2–5: assets, scene/ECS, editor, 3D, and Aego Script	2026-10-08 13:31:21 +03:00
sanspie	56ca1c638e	Stage 1: engine core, platform, gpu, vfs	2026-09-26 16:32:40 +03:00