Stage 9.5c3: docs runtime polish

core/curve with presets, keys, wraps; KindCurve in schema, scenes, prefabs and the inspector curve editor.
modules/tween: tweens and timers in per-world pools, game and unscaled domains, script field targets via contracts/scriptfields.
Host handle types (abi.Handle, bind.Handle, manifest v5), yield on awaitable handles via contracts/scriptwait.
Script modules aego/curve, aego/tween, aego/timer; platformer enemy uses a cooldown and a fade-out tween.
Docs: tween.md, curves.md, language reference; golden for the curve editor.

.github/workflows/ci-platforms.yml

@@ -94,4 +94,14 @@ jobs:
       - name: example project
         run: |
           /tmp/aego check examples/native-rotator
-          /tmp/aego run examples/native-rotator --headless --frames 60
+          /tmp/aego run examples/native-rotator --headless --frames 60
+      - name: export packages
+        run: go test -count=1 ./runtime/... ./vfs/exportfs ./app/export/...
+      - name: export and run headless
+        run: go test -count=1 -run 'TestExport' -v ./tests/integration
+      - name: editor app bundle
+        if: runner.os == 'macOS'
+        run: |
+          make editor-app
+          plutil -lint ".cache/Aego Editor.app/Contents/Info.plist"
+          codesign --verify --deep ".cache/Aego Editor.app"

.gitignore

@@ -11,4 +11,10 @@ tools/genicons/genicons
 /aego
 /aego-editor
 /aego-playground
+/aego-runtime
+*.syso
 *.test
+
+/tests/golden/testdata/actual-*
+tools/websmoke/node_modules/
+tools/websmoke/golden/actual-*.png

app/assembly/assembly.go

@@ -8,7 +8,6 @@ import (
 	"aego/core/log"
 	"aego/engine/base"
 	"aego/engine/module"
-	"aego/platform/input"
 	"aego/scene"
 	"aego/script/bind"
 )
@@ -16,7 +15,6 @@ import (
 type Options struct {
 	Seed    uint64
 	Testing bool
-	Input   *input.AxisConfig
 }
 
 type Entry struct {

app/assembly/builtin/builtin.go

@@ -4,10 +4,20 @@ import (
 	"aego/app/assembly"
 	"aego/engine/base"
 	"aego/engine/module"
+	"aego/modules/accessibility"
+	"aego/modules/audio"
+	"aego/modules/dataasset"
+	"aego/modules/debug"
+	"aego/modules/display"
+	inputmod "aego/modules/input"
 	"aego/modules/physics"
 	"aego/modules/render2d"
 	"aego/modules/render3d"
+	"aego/modules/savegame"
 	"aego/modules/scripting"
+	settingsmod "aego/modules/settings"
+	"aego/modules/spawn"
+	"aego/modules/tween"
 	"aego/script/stdlib"
 )
 
@@ -15,6 +25,10 @@ func core() assembly.Entry {
 	return assembly.Entry{ID: base.CoreID, New: func(assembly.Options) module.Module { return base.Core{} }}
 }
 
+func inputEntry() assembly.Entry {
+	return assembly.Entry{ID: inputmod.ID, New: func(assembly.Options) module.Module { return inputmod.New() }}
+}
+
 func render2dEntry() assembly.Entry {
 	return assembly.Entry{ID: render2d.ID, New: func(assembly.Options) module.Module { return render2d.New() }}
 }
@@ -25,7 +39,7 @@ func render3dEntry() assembly.Entry {
 
 func scriptEntry() assembly.Entry {
 	return assembly.Entry{ID: scripting.ID, New: func(o assembly.Options) module.Module {
-		return scripting.New(stdlib.Options{Seed: o.Seed, Testing: o.Testing, Input: o.Input})
+		return scripting.New(stdlib.Options{Seed: o.Seed, Testing: o.Testing})
 	}}
 }
 
@@ -33,6 +47,43 @@ func physicsEntry() assembly.Entry {
 	return assembly.Entry{ID: physics.ID, New: func(assembly.Options) module.Module { return physics.New() }}
 }
 
-func Default() assembly.Catalog {
-	return assembly.Catalog{core(), render2dEntry(), render3dEntry(), scriptEntry(), physicsEntry()}
+func debugEntry() assembly.Entry {
+	return assembly.Entry{ID: debug.ID, New: func(assembly.Options) module.Module { return debug.New() }}
+}
+
+func displayEntry() assembly.Entry {
+	return assembly.Entry{ID: display.ID, New: func(assembly.Options) module.Module { return display.New() }}
+}
+
+func audioEntry() assembly.Entry {
+	return assembly.Entry{ID: audio.ID, New: func(assembly.Options) module.Module { return audio.New() }}
+}
+
+func accessibilityEntry() assembly.Entry {
+	return assembly.Entry{ID: accessibility.ID, New: func(assembly.Options) module.Module { return accessibility.New() }}
+}
+
+func settingsEntry() assembly.Entry {
+	return assembly.Entry{ID: settingsmod.ID, Requires: []string{inputmod.ID}, New: func(assembly.Options) module.Module { return settingsmod.New() }}
+}
+
+func tweenEntry() assembly.Entry {
+	return assembly.Entry{ID: tween.ID, Requires: []string{scripting.ID}, New: func(assembly.Options) module.Module { return tween.New() }}
+}
+
+func dataEntry() assembly.Entry {
+	return assembly.Entry{ID: dataasset.ID, New: func(assembly.Options) module.Module { return dataasset.New() }}
+}
+
+func spawnEntry() assembly.Entry {
+	return assembly.Entry{ID: spawn.ID, New: func(assembly.Options) module.Module { return spawn.New() }}
+}
+
+func savegameEntry() assembly.Entry {
+	return assembly.Entry{ID: savegame.ID, Requires: []string{scripting.ID, spawn.ID}, New: func(assembly.Options) module.Module { return savegame.New() }}
+}
+
+func Default() assembly.Catalog {
+	return assembly.Catalog{core(), dataEntry(), inputEntry(), render2dEntry(), render3dEntry(), scriptEntry(), physicsEntry(), debugEntry(),
+		displayEntry(), audioEntry(), accessibilityEntry(), settingsEntry(), tweenEntry(), spawnEntry(), savegameEntry()}
 }

app/assembly/builtin/headless.go

@@ -3,5 +3,5 @@ package builtin
 import "aego/app/assembly"
 
 func Headless() assembly.Catalog {
-	return assembly.Catalog{core(), scriptEntry(), physicsEntry()}
+	return assembly.Catalog{core(), dataEntry(), inputEntry(), scriptEntry(), physicsEntry(), debugEntry(), displayEntry(), audioEntry(), accessibilityEntry(), settingsEntry(), tweenEntry(), spawnEntry(), savegameEntry()}
 }

app/assembly/builtin/runtime.go

@@ -0,0 +1,7 @@
+package builtin
+
+import "aego/app/assembly"
+
+func Runtime() assembly.Catalog {
+	return Default()
+}

app/assembly/builtin/tools.go

@@ -24,6 +24,10 @@ func Manifest(user ...module.Module) (*manifest.Manifest, error) {
 }
 
 func AuditIcons(user ...module.Module) (*module.IconReport, error) {
+	return AuditIconsWith(nil, user...)
+}
+
+func AuditIconsWith(extra []module.IconUse, user ...module.Module) (*module.IconReport, error) {
 	types, err := assembly.NewTypes()
 	if err != nil {
 		return nil, err
@@ -32,7 +36,7 @@ func AuditIcons(user ...module.Module) (*module.IconReport, error) {
 	if err != nil {
 		return nil, err
 	}
-	return module.Audit(types, bind.NewManifest(), append(mods, user...)...)
+	return module.AuditUses(extra, types, bind.NewManifest(), append(mods, user...)...)
 }
 
 func IconSources() []string {

app/assembly/editors/editors.go

@@ -2,6 +2,10 @@ package editors
 
 import (
 	"aego/app/assembly"
+	"aego/modules/debug"
+	debugeditor "aego/modules/debug/editor"
+	inputmod "aego/modules/input"
+	inputeditor "aego/modules/input/editor"
 	"aego/modules/physics"
 	physicseditor "aego/modules/physics/editor"
 	"aego/modules/render2d"
@@ -12,7 +16,9 @@ import (
 
 func With(c assembly.Catalog) assembly.Catalog {
 	return c.
+		With(inputmod.ID, inputeditor.Hook).
 		With(render2d.ID, render2deditor.Hook).
 		With(render3d.ID, render3deditor.Hook).
-		With(physics.ID, physicseditor.Hook)
+		With(physics.ID, physicseditor.Hook).
+		With(debug.ID, debugeditor.Hook)
 }

app/assembly/hooked.go

@@ -44,3 +44,14 @@ func (h hooked) Shutdown() {
 		sd.Shutdown()
 	}
 }
+
+func (h hooked) Reconfigure(ctx *module.AttachContext) error {
+	if rc, ok := h.inner.(module.Reconfigurer); ok {
+		return rc.Reconfigure(ctx)
+	}
+	return nil
+}
+
+func (h hooked) Unwrap() module.Module {
+	return h.inner
+}

app/assembly/playground/playground.go

@@ -4,17 +4,34 @@ import (
 	"aego/app/assembly"
 	"aego/engine/base"
 	"aego/engine/module"
+	"aego/modules/debug"
+	inputmod "aego/modules/input"
+	"aego/modules/physics"
 	"aego/modules/render2d"
 	"aego/modules/scripting"
 	"aego/script/stdlib"
+	"aego/script/vm"
 )
 
 func Catalog() assembly.Catalog {
 	return assembly.Catalog{
 		{ID: base.CoreID, New: func(assembly.Options) module.Module { return base.Core{} }},
+		{ID: inputmod.ID, New: func(assembly.Options) module.Module { return inputmod.New() }},
 		{ID: render2d.ID, New: func(assembly.Options) module.Module { return render2d.New() }},
 		{ID: scripting.ID, New: func(o assembly.Options) module.Module {
-			return scripting.New(stdlib.Options{Seed: o.Seed, Testing: o.Testing, Input: o.Input})
+			return scripting.New(stdlib.Options{Seed: o.Seed, Testing: o.Testing})
 		}},
+		{ID: physics.ID, New: func(assembly.Options) module.Module { return physics.New() }},
+		{ID: debug.ID, New: func(assembly.Options) module.Module { return debug.New() }},
 	}
 }
+
+const (
+	SandboxBudget = 2_000_000
+	SandboxHeap   = 64 << 20
+	SandboxNodes  = 10_000
+)
+
+func SandboxVM() vm.Options {
+	return vm.Options{Budget: SandboxBudget, MaxHeap: SandboxHeap}
+}

app/crash/crash_test.go

@@ -0,0 +1,27 @@
+package crash
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestBundleHidesHome(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+	root := filepath.Join(home, "game")
+	dir, err := Write(Bundle{Root: root, Kind: "panic", Where: "panel inspector", Panic: "boom in " + root, Stack: []byte(root + "/x.go:1")})
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range []string{"info.aetext", "go.stack"} {
+		data, err := os.ReadFile(filepath.Join(dir, f))
+		if err != nil {
+			t.Fatal(err)
+		}
+		if strings.Contains(string(data), home) || !strings.Contains(string(data), "~/game") {
+			t.Fatalf("%s is not sanitized: %s", f, data)
+		}
+	}
+}

app/docstool/try.go

@@ -0,0 +1,70 @@
+package docstool
+
+import (
+	"fmt"
+	"io"
+	"strings"
+
+	"aego/app/playground"
+	"aego/engine/docs"
+)
+
+const tryFrames = 60
+
+func CheckTry(reg *docs.Registry, w io.Writer) int {
+	pg, err := playground.New()
+	if err != nil {
+		fmt.Fprintln(w, "try: 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()
+		}
+	}()
+	sandbox := map[string]bool{}
+	for _, e := range pg.TryScenes() {
+		sandbox[e.ID] = true
+	}
+	bad := 0
+	for _, e := range reg.All() {
+		if e.Try == "" {
+			continue
+		}
+		var msgs []string
+		add := func(msg string) {
+			for _, m := range msgs {
+				if m == msg || strings.Contains(m, msg) || strings.Contains(msg, m) {
+					return
+				}
+			}
+			msgs = append(msgs, msg)
+		}
+		switch res := pg.PlayScene(e.ID, []byte(e.Try)); {
+		case !sandbox[e.ID]:
+			add("belongs to a module the docs runtime does not include")
+		case !res.Started:
+			add("does not load: " + res.Error)
+		default:
+			if err := pg.Game().Step(tryFrames); err != nil {
+				add("stops the engine: " + err.Error())
+			}
+		}
+		poll := pg.Poll()
+		for _, l := range poll.Log {
+			if l.Level != "INFO" && l.Level != "DEBUG" {
+				add(l.Text)
+			}
+		}
+		for _, f := range poll.Faults {
+			add(f.Code + " " + f.Message)
+		}
+		for _, m := range msgs {
+			fmt.Fprintf(w, "%s: error: try scene %s\n", e.ID, m)
+		}
+		bad += len(msgs)
+	}
+	pg.Stop()
+	return bad
+}

app/docsview/bridge.go

@@ -0,0 +1,73 @@
+//go:build aego_editor
+
+package docsview
+
+import (
+	"encoding/json"
+	"strconv"
+
+	"aego/editor/core/docsession"
+)
+
+type request struct {
+	Scene     string  `json:"scene"`
+	Select    string  `json:"select"`
+	Component string  `json:"component"`
+	Field     string  `json:"field"`
+	Value     float64 `json:"value"`
+}
+
+type Reply struct {
+	Text  string            `json:"text,omitempty"`
+	Error string            `json:"error,omitempty"`
+	State *docsession.State `json:"state,omitempty"`
+	Log   []Line            `json:"log,omitempty"`
+}
+
+func (a *App) Call(method string, payload []byte) Reply {
+	var req request
+	if len(payload) > 0 {
+		if err := json.Unmarshal(payload, &req); err != nil {
+			return Reply{Error: err.Error()}
+		}
+	}
+	s := a.session
+	var err error
+	switch method {
+	case "load":
+		err = s.Load([]byte(req.Scene), req.Select)
+	case "reset":
+		err = s.Reset()
+	case "text":
+	case "play":
+		s.TogglePause()
+	case "undo":
+		err = s.Undo()
+	case "redo":
+		err = s.Redo()
+	case "set":
+		err = s.Set(req.Component, req.Field, req.Value)
+	case "state":
+		st := s.State()
+		return Reply{State: &st}
+	case "log":
+		out := Reply{Log: a.lines}
+		a.lines = nil
+		return out
+	default:
+		return Reply{Error: "unknown method " + strconv.Quote(method)}
+	}
+	if err != nil {
+		return Reply{Error: err.Error()}
+	}
+	st := s.State()
+	return Reply{Text: string(s.Text()), State: &st}
+}
+
+func (a *App) Reply(method, payload string) string {
+	out, err := json.Marshal(a.Call(method, []byte(payload)))
+	if err != nil {
+		return `{"error":"cannot encode the reply"}`
+	}
+	return string(out)
+}

app/docsview/scripts.go

@@ -0,0 +1,70 @@
+//go:build aego_editor
+
+package docsview
+
+import (
+	playmods "aego/app/assembly/playground"
+	"aego/core/log"
+	"aego/editor/core/context"
+	"aego/engine"
+	"aego/engine/module"
+	"aego/scene"
+	"aego/script/bind"
+	"aego/script/bytecode"
+	scriptruntime "aego/script/runtime"
+)
+
+type scriptHost struct {
+	reg   *bind.Registry
+	types *scene.Types
+	man   *module.Manifest
+	log   *log.Logger
+	mods  []*bytecode.Module
+}
+
+func (h *scriptHost) Errors() int {
+	return 0
+}
+
+func (h *scriptHost) Attach(w *engine.World, s *scene.Scene) (func(), error) {
+	rt := scriptruntime.New(scriptruntime.Options{Bindings: h.reg, Schema: h.types.Schema(), Log: h.log, VM: playmods.SandboxVM()})
+	if err := rt.Link(h.mods); err != nil {
+		rt.Close()
+		return nil, err
+	}
+	w.SetService(scriptruntime.ServiceID, rt)
+	if err := rt.Instantiate(s); err != nil {
+		w.RemoveService(scriptruntime.ServiceID)
+		rt.Close()
+		return nil, err
+	}
+	detach, err := h.man.Attach(&module.AttachContext{World: w, Scene: s, Log: h.log, Editor: true, Play: true})
+	if err != nil {
+		w.RemoveService(scriptruntime.ServiceID)
+		rt.Close()
+		return nil, err
+	}
+	return func() {
+		detach()
+		w.RemoveService(scriptruntime.ServiceID)
+		rt.Close()
+	}, nil
+}
+
+func (h *scriptHost) Problems() ([]context.ScriptProblem, uint64) {
+	return nil, 0
+}
+
+func (h *scriptHost) Stats() (context.ScriptStats, bool) {
+	return context.ScriptStats{}, false
+}
+
+func (h *scriptHost) Status() (uint64, bool) {
+	return 0, false
+}
+
+func (h *scriptHost) Watch(*engine.World, scene.NodeHandle, string, string, int) (string, float64, bool, bool) {
+	return "", 0, false, false
+}
+
+var _ context.ScriptHost = (*scriptHost)(nil)

app/edit/crash.go

@@ -0,0 +1,97 @@
+package edit
+
+import (
+	"strconv"
+	"strings"
+
+	"aego/app/crash"
+	"aego/core/ids"
+	"aego/core/log"
+	"aego/editor/core/context"
+	"aego/scene"
+	"aego/scene/sceneio"
+	"aego/script/runtime"
+	"aego/script/vm"
+)
+
+func scriptStack(f *vm.Fault) string {
+	var b strings.Builder
+	for _, fr := range f.Stack {
+		b.WriteString(fr.File + ":" + strconv.Itoa(fr.Line) + " " + fr.Function + "\n")
+	}
+	return b.String()
+}
+
+func names(s *scene.Scene) func(ids.NodeID) string {
+	return func(id ids.NodeID) string {
+		if h := s.Handle(id); !h.IsZero() && s.IsAlive(h) {
+			return s.Path(h)
+		}
+		return id.String()[:8]
+	}
+}
+
+func (s *Session) moduleIDs() string {
+	var out []string
+	for _, m := range s.Modules.Modules {
+		out = append(out, m.ID)
+	}
+	return strings.Join(out, ",")
+}
+
+func (s *Session) crash(kind, where string, rec any, stack []byte, script string) {
+	defer func() { recover() }()
+	b := crash.Bundle{
+		Root: s.Project.Root, Kind: kind, Where: where, Panic: rec, Stack: stack, Script: script,
+		Trace: s.Engine.Trace(), Log: s.ring,
+		Info: [][2]string{{"project", s.Project.Name}, {"gpu", s.Engine.Caps().Renderer}, {"modules", s.moduleIDs()}},
+	}
+	var ctx *context.Editor
+	if s.App != nil {
+		ctx = s.App.Context()
+	}
+	if ctx != nil {
+		ctx.Docs.WriteRecovery()
+		if pc := s.App.Play(); pc != nil && pc.World() != nil {
+			b.Events = pc.Recorder()
+			if sc := pc.Scene(); sc != nil {
+				b.Names = names(sc)
+				if s.crashScene {
+					b.Scene = sceneio.Save(sc)
+				}
+			}
+		}
+	}
+	dir, err := crash.Write(b)
+	if err != nil {
+		s.log.Error("cannot write the crash bundle", log.F("err", err.Error()))
+		return
+	}
+	s.log.Error("crash bundle written", log.F("dir", dir), log.F("where", where))
+	if ctx != nil {
+		ctx.Notify(context.LevelError, "Crash report saved to "+dir)
+	}
+}
+
+func (s *Session) scriptPanic(boundary string, v any, stack []byte) {
+	s.crash("panic", boundary, v, stack, "")
+}
+
+func (s *Session) fault(rep runtime.FaultReport) {
+	if rep.Fault != nil && rep.Fault.Code == vm.CodeNativePanic {
+		s.crash("fault", rep.Type, rep.Fault.Message, []byte(rep.Fault.Detail), scriptStack(rep.Fault))
+	}
+}
+
+func (s *Session) spike() {
+	if s.spikeMs <= 0 {
+		return
+	}
+	ms := s.Engine.Stats().FrameTime * 1000
+	now := s.Engine.Platform().Now()
+	if ms < s.spikeMs || now-s.lastSpike < 10 {
+		return
+	}
+	s.lastSpike = now
+	s.crash("spike", strconv.FormatFloat(ms, 'f', 1, 64)+" ms frame", nil, nil, "")
+}

app/edit/export.go

@@ -0,0 +1,89 @@
+package edit
+
+import (
+	"os/exec"
+	"runtime"
+
+	"aego/app/bootstrap"
+	"aego/app/export"
+	"aego/app/projects"
+	"aego/asset/pipeline"
+	"aego/editor/core/services"
+	"aego/engine/problems"
+	"aego/project"
+)
+
+type exporter struct {
+	p      *project.Project
+	pl     *pipeline.Pipeline
+	engine string
+}
+
+func newExporter(p *project.Project, pl *pipeline.Pipeline) services.Exporter {
+	if pl == nil {
+		return nil
+	}
+	root, err := projects.EngineRoot("")
+	if err != nil {
+		return nil
+	}
+	return &exporter{p: p, pl: pl, engine: root}
+}
+
+func (x *exporter) Targets() []string {
+	return export.Targets()
+}
+
+func (x *exporter) Out(target, profile string) string {
+	t, err := export.ParseTarget(target)
+	if err != nil {
+		return ""
+	}
+	prof, err := export.ParseProfile(profile)
+	if err != nil {
+		return ""
+	}
+	return export.DefaultOut(x.p, t, prof)
+}
+
+func (x *exporter) Prepare() any {
+	return export.Take(x.pl)
+}
+
+func (x *exporter) Check(prep any, profile string) []problems.Diagnostic {
+	snap, ok := prep.(*export.Snapshot)
+	if !ok {
+		return nil
+	}
+	prof, err := export.ParseProfile(profile)
+	if err != nil {
+		return nil
+	}
+	return export.Check(x.p, snap, prof, bootstrap.NeedsNative(x.p))
+}
+
+func (x *exporter) Export(prep any, req services.ExportRequest, progress func(float32, string)) (services.ExportReport, error) {
+	snap, _ := prep.(*export.Snapshot)
+	rep, err := export.Export(export.Options{
+		Project: x.p, Engine: x.engine, Target: req.Target, Profile: req.Profile, Out: req.Out,
+		Snapshot: snap, Progress: progress,
+	})
+	var out services.ExportReport
+	if rep != nil {
+		out = services.ExportReport{Out: rep.Out, Lines: rep.Lines(), Issues: rep.Diagnostics, Blocked: rep.Blocked}
+	}
+	return out, err
+}
+
+func (x *exporter) Reveal(path string) error {
+	var cmd *exec.Cmd
+	switch runtime.GOOS {
+	case "darwin":
+		cmd = exec.Command("open", path)
+	case "windows":
+		cmd = exec.Command("explorer", path)
+	default:
+		cmd = exec.Command("xdg-open", path)
+	}
+	return cmd.Start()
+}

app/edit/main_test.go

@@ -0,0 +1,25 @@
+package edit
+
+import (
+	"os"
+	"runtime"
+	"testing"
+)
+
+func TestMain(m *testing.M) {
+	dir, err := os.MkdirTemp("", "aego-config-")
+	if err != nil {
+		panic(err)
+	}
+	switch runtime.GOOS {
+	case "darwin":
+		os.Setenv("HOME", dir)
+	case "windows":
+		os.Setenv("AppData", dir)
+	default:
+		os.Setenv("XDG_CONFIG_HOME", dir)
+	}
+	code := m.Run()
+	os.RemoveAll(dir)
+	os.Exit(code)
+}

app/edit/physics_test.go

@@ -170,7 +170,7 @@ func TestProfilerSectionsFollowPlay(t *testing.T) {
 	}
 	prof := s.App.Profiler()
 	drawPanel(s, prof)
-	expectSections(t, prof.Sections(), "Frame")
+	expectSections(t, prof.Sections(), "Frame", "Memory")
 	pc := s.App.Play()
 	if err := pc.Start(d); err != nil {
 		t.Fatal(err)
@@ -179,7 +179,7 @@ func TestProfilerSectionsFollowPlay(t *testing.T) {
 		s.Step()
 	}
 	drawPanel(s, prof)
-	expectSections(t, prof.Sections(), "Frame", "Game", "Scripts", "Physics")
+	expectSections(t, prof.Sections(), "Frame", "Memory", "Game", "Scripts", "Physics")
 	if _, err := ctx.Docs.Open("scenes/other.aescene"); err != nil {
 		t.Fatal(err)
 	}
@@ -189,5 +189,5 @@ func TestProfilerSectionsFollowPlay(t *testing.T) {
 	pc.Stop()
 	s.Step()
 	drawPanel(s, prof)
-	expectSections(t, prof.Sections(), "Frame")
+	expectSections(t, prof.Sections(), "Frame", "Memory")
 }

app/edit/scripts.go

@@ -36,6 +36,8 @@ type scriptHost struct {
 	probRev  uint64
 	probs    []context.ScriptProblem
 	stats    context.ScriptStats
+	fault    func(runtime.FaultReport)
+	panicked func(boundary string, v any, stack []byte)
 }
 
 func (h *scriptHost) channel() *log.ChannelLogger {
@@ -158,7 +160,7 @@ func (h *scriptHost) Attach(w *engine.World, s *scene.Scene) (func(), error) {
 	if err := h.sync(); err != nil {
 		return nil, err
 	}
-	rt := runtime.New(runtime.Options{Bindings: h.bindings, Schema: h.schema, Log: h.log})
+	rt := runtime.New(runtime.Options{Bindings: h.bindings, Schema: h.schema, Log: h.log, OnFault: h.fault, OnPanic: h.panicked})
 	if err := rt.Link(h.prog.Ordered()); err != nil {
 		return nil, err
 	}
@@ -193,3 +195,11 @@ func (h *scriptHost) Attach(w *engine.World, s *scene.Scene) (func(), error) {
 		}
 	}, nil
 }
+
+func (h *scriptHost) Watch(w *engine.World, node scene.NodeHandle, script, field string, lane int) (string, float64, bool, bool) {
+	rt, ok := engine.ServiceOf[*runtime.Runtime](w, runtime.ServiceID)
+	if !ok || rt == nil {
+		return "", 0, false, false
+	}
+	return rt.WatchField(node, script, field, lane)
+}

app/export/macos/macos_test.go

@@ -0,0 +1,25 @@
+package macos
+
+import (
+	"encoding/binary"
+	"image"
+	"strings"
+	"testing"
+)
+
+func TestICNSHeader(t *testing.T) {
+	data, err := ICNS(image.NewNRGBA(image.Rect(0, 0, 64, 64)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(data[:4]) != "icns" || int(binary.BigEndian.Uint32(data[4:])) != len(data) {
+		t.Fatal("bad icns header")
+	}
+}
+
+func TestPlistEscapesAndBundleID(t *testing.T) {
+	p := string(Plist(Info{Name: "A & B", Executable: "ab", ID: BundleID("My_Game/x"), Version: "1.0"}, "icon"))
+	if !strings.Contains(p, "A & B") || !strings.Contains(p, "dev.aego.my.game.x") {
+		t.Fatal(p)
+	}
+}

app/export/pack.go

@@ -0,0 +1,67 @@
+package export
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+
+	"aego/app/export/icon"
+	"aego/app/export/macos"
+	"aego/core/errs"
+)
+
+const desktopEntry = "[Desktop Entry]\nType=Application\nName=%s\nExec=sh -c 'cd \"$(dirname \"%%k\")\" && exec ./%s'\nTerminal=false\nCategories=Game;\n"
+
+func (j *job) pack() error {
+	switch j.t.OS {
+	case "linux":
+		return j.packLinux()
+	case "darwin":
+		return j.packDarwin()
+	case "js":
+		return j.packWeb()
+	}
+	return nil
+}
+
+func (j *job) packLinux() error {
+	if j.icon != nil {
+		data, err := icon.PNG(icon.Resize(j.icon, 256, 256))
+		if err != nil {
+			return err
+		}
+		if err := os.WriteFile(filepath.Join(j.out, "icon.png"), data, 0o644); err != nil {
+			return errs.Wrap(err, errs.VFSIO, "cannot write the icon")
+		}
+	}
+	entry := fmt.Sprintf(desktopEntry, j.p.Name, j.l.exe)
+	if err := os.WriteFile(filepath.Join(j.out, j.l.exe+".desktop"), []byte(entry), 0o755); err != nil {
+		return errs.Wrap(err, errs.VFSIO, "cannot write the .desktop file")
+	}
+	return nil
+}
+
+func (j *job) packDarwin() error {
+	info := macos.Info{
+		Name: j.p.Name, Executable: j.l.exe, ID: macos.BundleID(j.p.Module),
+		Version: GameVersion(j.p), MinOS: "11.0", Category: "public.app-category.games",
+	}
+	if err := macos.Fill(j.l.app, info, j.icon); err != nil {
+		return err
+	}
+	if runtime.GOOS != "darwin" {
+		return nil
+	}
+	path, err := exec.LookPath("codesign")
+	if err != nil {
+		return nil
+	}
+	out, err := exec.Command(path, "--force", "--deep", "--sign", "-", j.l.app).CombinedOutput()
+	if err != nil {
+		return errs.New(errs.BuildFailed, "ad-hoc signing failed: "+strings.TrimSpace(string(out)))
+	}
+	return nil
+}

app/export/snapshot.go

@@ -0,0 +1,61 @@
+package export
+
+import (
+	"slices"
+
+	"aego/app/projects"
+	"aego/app/run"
+	"aego/asset"
+	"aego/asset/pipeline"
+	"aego/core/log"
+	"aego/project"
+	"aego/vfs"
+)
+
+type Snapshot struct {
+	idx    *asset.Index
+	files  vfs.FS
+	assets []pipeline.AssetInfo
+	issues []pipeline.MetaIssue
+}
+
+func Take(pl *pipeline.Pipeline) *Snapshot {
+	issues, _ := pl.MetaIssues()
+	return &Snapshot{idx: pl.Index().Clone(), files: pl.Artifacts(), assets: pl.Assets(), issues: slices.Clone(issues)}
+}
+
+func Fresh(p *project.Project) (*Snapshot, func(), error) {
+	ws, err := projects.OpenWorkspace(p, "", false)
+	if err != nil {
+		return nil, nil, err
+	}
+	imps, err := run.Importers(ws)
+	if err != nil {
+		return nil, nil, err
+	}
+	pl, err := pipeline.Open(p, imps, log.Nop())
+	if err != nil {
+		return nil, nil, err
+	}
+	if _, _, err := pl.Scan(); err != nil {
+		pl.Close()
+		return nil, nil, err
+	}
+	if _, err := pl.ImportAll(); err != nil {
+		pl.Close()
+		return nil, nil, err
+	}
+	return Take(pl), pl.Close, nil
+}
+
+func (s *Snapshot) Revision() uint64 {
+	return 1
+}
+
+func (s *Snapshot) Index() *asset.Index {
+	return s.idx
+}
+
+func (s *Snapshot) Artifacts() vfs.FS {
+	return s.files
+}

app/export/web/index.html

@@ -0,0 +1,37 @@
+<!doctype html>
+<html lang="en" data-build="{{.Build}}">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>{{.Title}}</title>
+{{if .Icon}}<link rel="icon" href="favicon.png">{{else}}<link rel="icon" href="data:,">{{end}}
+<style>
+html, body { margin: 0; height: 100%; background: #0d0e10; color: #e4e3df; overflow: hidden; font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
+canvas { display: block; width: 100%; height: 100%; outline: none; touch-action: none; }
+.loader { position: fixed; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; background: #0d0e10; transition: opacity 0.25s; }
+.loader.done { opacity: 0; pointer-events: none; }
+.loader .title { font-size: 20px; font-weight: 600; }
+.progress { width: min(360px, 80vw); height: 6px; border-radius: 3px; background: #2d3036; overflow: hidden; }
+#bar { width: 0; height: 100%; background: #6e9bf5; transition: width 0.1s; }
+#bar.indeterminate { width: 30%; animation: slide 1s ease-in-out infinite alternate; }
+@keyframes slide { from { margin-left: 0; } to { margin-left: 70%; } }
+#status { color: #9a9890; font-size: 13px; }
+.loader.failed #bar { background: #f0776c; }
+#error { max-width: min(640px, 90vw); max-height: 40vh; overflow: auto; margin: 0; padding: 10px 12px; white-space: pre-wrap; color: #f0776c; background: #1d1f23; border-radius: 6px; font: 12px/1.5 ui-monospace, Menlo, Consolas, monospace; }
+#fullscreen { position: fixed; top: 10px; right: 10px; width: 36px; height: 36px; border: 0; border-radius: 6px; background: rgba(0, 0, 0, 0.45); color: #fff; font-size: 18px; cursor: pointer; opacity: 0.5; }
+#fullscreen:hover { opacity: 1; }
+</style>
+</head>
+<body>
+<canvas id="game" data-aego tabindex="0" aria-label="{{.Title}}"></canvas>
+<div id="loader" class="loader" role="status" aria-live="polite">
+  <div class="title">{{.Title}}</div>
+  <div class="progress"><div id="bar"></div></div>
+  <div id="status">Loading…</div>
+  <pre id="error" hidden></pre>
+</div>
+<button id="fullscreen" type="button" title="Fullscreen" aria-label="Fullscreen" hidden>⛶</button>
+<script src="wasm_exec.js?v={{.Build}}"></script>
+<script src="loader.js?v={{.Build}}"></script>
+</body>
+</html>

app/export/web_test.go

@@ -0,0 +1,85 @@
+package export
+
+import (
+	"bytes"
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"aego/project"
+	"aego/runtime/bundle"
+)
+
+var webTarget = Target{OS: "js", Arch: "wasm"}
+
+func TestParseWeb(t *testing.T) {
+	for _, s := range []string{"web", "WEB", "js/wasm", "wasm"} {
+		tg, err := ParseTarget(s)
+		if err != nil || !tg.Web() || tg.String() != "web" {
+			t.Fatalf("%s: %+v %v", s, tg, err)
+		}
+	}
+}
+
+func TestWebLayout(t *testing.T) {
+	p := &project.Project{Name: "My Game", Root: t.TempDir()}
+	l := layoutFor(webTarget, "/out", p)
+	if l.binary() != filepath.Join("/out", WebWasm) || l.data != filepath.Join("/out", bundle.DataDir) {
+		t.Fatalf("layout %+v", l)
+	}
+	if !strings.HasSuffix(DefaultOut(p, webTarget, bundle.Release), "web-"+bundle.Release) {
+		t.Fatal(DefaultOut(p, webTarget, bundle.Release))
+	}
+}
+
+func TestPackWeb(t *testing.T) {
+	root, err := goRoot()
+	if err != nil {
+		t.Skip(err)
+	}
+	out := t.TempDir()
+	wasm := bytes.Repeat([]byte("wasm"), 4096)
+	j := &job{
+		p: &project.Project{Name: `<Game & "Co">`, Module: "game"}, t: webTarget, out: out, goroot: root,
+		rep:   &Report{Hash: strings.Repeat("ab", 32), BinarySize: int64(len(wasm))},
+		files: []webFile{{Path: "artifacts/a.tex", Size: 3}}, manifestSize: 8,
+	}
+	j.l = layoutFor(webTarget, out, j.p)
+	if err := os.MkdirAll(j.l.data, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(j.l.binary(), wasm, 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := j.packWeb(); err != nil {
+		t.Fatal(err)
+	}
+	page, _ := os.ReadFile(filepath.Join(out, webIndex))
+	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"`) {
+		t.Fatal("the build key is missing")
+	}
+	raw, err := os.ReadFile(filepath.Join(j.l.data, WebFiles))
+	if err != nil {
+		t.Fatal(err)
+	}
+	var list webList
+	if err := json.Unmarshal(raw, &list); err != nil {
+		t.Fatal(err)
+	}
+	if list.Wasm != int64(len(wasm)) || list.Manifest.Size != 8 || len(list.Files) != 1 || list.Files[0].Path != "artifacts/a.tex" {
+		t.Fatalf("files.json %+v", list)
+	}
+	for _, f := range []string{webExec, webLoader, WebWasm + ".gz"} {
+		if _, err := os.Stat(filepath.Join(out, f)); err != nil {
+			t.Errorf("%s is missing", f)
+		}
+	}
+	if j.rep.BinaryGzip <= 0 || j.rep.BinaryGzip >= j.rep.BinarySize {
+		t.Fatalf("wasm gzip size %d of %d", j.rep.BinaryGzip, j.rep.BinarySize)
+	}
+}

app/export/winres/winres_test.go

@@ -0,0 +1,34 @@
+package winres
+
+import (
+	"slices"
+	"testing"
+)
+
+func TestSysoHasResourceTypes(t *testing.T) {
+	data, err := Syso("amd64", []Icon{{Size: 16, PNG: []byte{1, 2, 3}}, {Size: 256, PNG: []byte{4, 5}}},
+		Info{Product: "Game", Original: "game.exe", Version: ParseVersion("1.2.3-beta")}, true)
+	if err != nil {
+		t.Fatal(err)
+	}
+	types, err := Types(data)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !slices.Equal(types, []uint16{rtIcon, rtGroupIcon, rtVersion, rtManifest}) {
+		t.Fatalf("resource types %v", types)
+	}
+}
+
+func TestParseVersion(t *testing.T) {
+	if v := ParseVersion("v2.10.3-rc1"); v != (Version{2, 10, 3, 0}) {
+		t.Fatalf("got %v", v)
+	}
+}
+
+func TestVersionInfoIsAligned(t *testing.T) {
+	b := versionInfo(Info{Product: "G", Version: Version{1, 0, 0, 0}})
+	if int(b[0])|int(b[1])<<8 != len(b) {
+		t.Fatalf("wLength %d, size %d", int(b[0])|int(b[1])<<8, len(b))
+	}
+}

app/importers.go

@@ -1,6 +1,7 @@
 package app
 
 import (
+	"aego/asset/importers/preset"
 	"sort"
 
 	"aego/asset/importers/atlas"
@@ -20,6 +21,7 @@ func CoreImporters() (*pipeline.ImporterRegistry, error) {
 		atlas.Wrap(texImporter.New()),
 		scenefile.NewScene(),
 		scenefile.NewPrefab(),
+		preset.New(),
 	} {
 		if err := reg.Register(imp); err != nil {
 			return nil, err

app/meta.go

@@ -0,0 +1,41 @@
+package app
+
+import (
+	"aego/asset/pipeline"
+	"aego/engine/problems"
+)
+
+const OwnerAssets = "assets"
+
+func metaSeverity(k pipeline.MetaIssueKind) problems.Severity {
+	switch k {
+	case pipeline.MetaDuplicate:
+		return problems.Error
+	case pipeline.MetaStale:
+		return problems.Info
+	}
+	return problems.Warning
+}
+
+func MetaProblems(pl *pipeline.Pipeline) problems.Source {
+	return problems.Source{
+		Revision: func() uint64 {
+			_, rev := pl.MetaIssues()
+			return rev
+		},
+		Append: func(dst []problems.Diagnostic) []problems.Diagnostic {
+			list, _ := pl.MetaIssues()
+			for _, is := range list {
+				dst = append(dst, problems.Diagnostic{
+					Owner:    OwnerAssets,
+					Code:     is.Code(),
+					Severity: metaSeverity(is.Kind),
+					Message:  is.Message(),
+					Help:     "Assets → Repair Meta Files… will " + is.Action(),
+					Subject:  problems.Subject{Kind: problems.SubjectFile, File: is.Path},
+				})
+			}
+			return dst
+		},
+	}
+}

app/playground/examples/.gitignore

@@ -0,0 +1,2 @@
+.aego/
+exports/

app/playground/examples/README.md

@@ -0,0 +1,8 @@
+# game
+
+Created from the Aego 2d template.
+
+    aego edit .
+    aego run .
+
+Scenes live in scenes/, scripts in scripts/<package>/, textures and other assets in assets/.