Stage 10d1: add-component requirements, play diff from history, node labels; one sound button on the web

.github/workflows/ci.yml

@@ -37,6 +37,10 @@ jobs:
       - run: go vet ./platform/sdl
       - run: make lint
       - run: make depcheck
+      - name: packaging tools
+        run: sudo apt-get install -y nsis squashfs-tools
+      - name: installer dry run
+        run: make nsis-check
 
   build:
     strategy:

Makefile

@@ -14,7 +14,7 @@ BENCH_COUNT ?= 10
 BENCH_CPU ?= 2
 BENCH_PIN = $(shell command -v taskset >/dev/null && echo taskset -c $(BENCH_CPU))
 EDITOR_VERSION ?= 0.1.0
-EDITOR_ICON ?= third_party/brand/aego-1024.png
+EDITOR_ICON ?= app/brand/png
 EXPORT_SMOKE = $(CURDIR)/.cache/export-smoke
 EXPORT_HOME = $(CURDIR)/.cache/export-home
 CHROMIUM ?= $(shell command -v chromium || command -v chromium-browser || command -v google-chrome)
@@ -22,10 +22,12 @@ WEB_SMOKE = cd tools/websmoke && npm ci --no-audit --no-fund && CHROMIUM=$(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-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 [ $$size -gt $(WASM_BUDGET) ]; then echo "the web demo is over the 8 MB gzip budget"; exit 1; fi
 TRY_BUDGET = 10485760
 WEB_TRY = cd tools/websmoke && CHROMIUM=$(CHROMIUM) node try.mjs --site=$(CURDIR)/site
+WEB_AUDIO = cd tools/websmoke && CHROMIUM=$(CHROMIUM) node audio.mjs --site=$(CURDIR)/site
 TRY_SIZE_CHECK = gzip -9 -k -f site/try/aego-docs.wasm; size=$$(stat -c %s site/try/aego-docs.wasm.gz); echo "aego-docs.wasm.gz: $$size bytes"; \
 	if [ $$size -gt $(TRY_BUDGET) ]; then echo "the docs runtime is over the 10 MB gzip budget, see make try-size"; exit 1; fi
 # Module targets, appended by modules/*/module.mk.
@@ -38,7 +40,7 @@ BENCH_PHYSICS_PKGS :=
 .DEFAULT_GOAL := bootstrap
 -include modules/*/module.mk
 
-.PHONY: 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
 
 XVFB := $(shell command -v xvfb-run 2>/dev/null)
 GL_OVERRIDE = MESA_GL_VERSION_OVERRIDE=3.3 MESA_GLSL_VERSION_OVERRIDE=330
@@ -49,7 +51,7 @@ GL_ENV = env SDL_VIDEODRIVER=offscreen LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=ll
 endif
 
 NONATIVE_PKGS = $$(go list ./... | grep -v -e '/platform/sdl$$' -e '/gpu/gl33$$' -e '/gpu/gl33/gl$$')
-LINT_PKGS = $$(go list ./... | grep -v '/gpu/gl33/gl$$')
+LINT_PKGS = $$(go list ./... | grep -v -e '/gpu/gl33/gl$$' -e '/audio/codec/vorbis/internal/')
 
 bootstrap: $(STAMP)
 
@@ -205,6 +207,7 @@ bench-profile:
 site: cli
 	.cache/bin/aego docs build --out site --repo $(DOCS_REPO) --demo
 	.cache/bin/aego export $(WEB_DEMO_PROJECT) --target web --release --out site/demo
+	$(WEB_DEMO_QUIET)
 	gzip -9 -k -f site/play/aego.wasm
 	@size=$$(stat -c %s site/play/aego.wasm.gz); echo "aego.wasm.gz: $$size bytes"; \
 	if [ $$size -gt $(WASM_BUDGET) ]; then echo "playground is over the 8 MB gzip budget, see make playground-size"; exit 1; fi
@@ -219,6 +222,7 @@ site-headless:
 	CGO_ENABLED=0 go build -tags aego_nonative -o .cache/bin/aego-docs ./cmd/aego
 	.cache/bin/aego-docs docs build --out site --engine $(CURDIR) --repo $(DOCS_REPO) --demo
 	.cache/bin/aego-docs export $(WEB_DEMO_PROJECT) --target web --release --engine $(CURDIR) --out site/demo
+	$(WEB_DEMO_QUIET)
 	gzip -9 -k -f site/play/aego.wasm
 	@size=$$(stat -c %s site/play/aego.wasm.gz); echo "aego.wasm.gz: $$size bytes"; \
 	if [ $$size -gt $(WASM_BUDGET) ]; then echo "playground is over the 8 MB gzip budget, see make playground-size"; exit 1; fi
@@ -246,6 +250,7 @@ web-smoke: site
 	$(WEB_SMOKE) --report=$(CURDIR)/.cache/web-bench.json
 	$(WEB_DEMO)
 	$(WEB_TRY)
+	$(WEB_AUDIO)
 
 web-smoke-update: site
 	$(WEB_SMOKE) --update
@@ -270,6 +275,7 @@ check-all: cli
 	.cache/bin/aego check examples/native-rotator
 	.cache/bin/aego check examples/platformer
 	.cache/bin/aego test examples/platformer
+	.cache/bin/aego check examples/topdown
 	.cache/bin/aego check examples/native-settings
 	.cache/bin/aego check examples/native-editor
 	.cache/bin/aego check app/playground/examples
@@ -281,6 +287,8 @@ fuzz:
 	go test -run '^$$' -fuzz '^FuzzParse$$' -fuzztime $(FUZZTIME) ./script/parser
 	go test -run '^$$' -fuzz '^FuzzDecodeVerify$$' -fuzztime $(FUZZTIME) ./script/verify
 	go test -run '^$$' -fuzz '^FuzzDecodeVerifyV3$$' -fuzztime $(FUZZTIME) ./script/verify
+	go test -run '^$$' -fuzz '^FuzzWAV$$' -fuzztime $(FUZZTIME) ./audio/codec
+	go test -run '^$$' -fuzz '^FuzzVorbis$$' -fuzztime $(FUZZTIME) ./audio/codec
 
 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
 
@@ -321,5 +329,15 @@ editor-app: bootstrap
 	go build -o .cache/bin/aego-editor ./cmd/aego-editor
 	go run ./tools/appbundle -bin .cache/bin/aego-editor -out .cache -version $(EDITOR_VERSION) $(if $(wildcard $(EDITOR_ICON)),-icon $(EDITOR_ICON))
 
+dmg: editor-app
+	tools/release/dmg.sh ".cache/Aego Editor.app" .cache/dist/Aego-$$(sed -n 's/^const Version = "\(.*\)"$$/\1/p' engine/config.go).dmg
+
+nsis-check:
+	sh tools/release/nsis-check.sh
+
+appimage: cli
+	mkdir -p .cache/stage/bin .cache/dist && cp .cache/bin/aego .cache/stage/bin/aego && printf 'dev\n' > .cache/stage/VERSION && cp tools/release/README.txt .cache/stage/
+	sh tools/release/appimage.sh .cache/stage .cache/dist/Aego-dev-x86_64.AppImage
+
 clean:
 	rm -rf .cache/build

app/agent/scene.go

@@ -65,9 +65,8 @@ 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) {
-			return s.sceneTx(a, "Add Component", mutate.AddComp(a.Str("node"), a.Str("comp")))
-		}},
+		{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},
+			{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 +92,49 @@ 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 {

app/agent/schema.go

@@ -90,6 +90,7 @@ func (s *Session) lookupType(name string) (*schema.TypeDescriptor, error) {
 			found = append(found, td)
 		}
 	}
+	found = schema.PreferProject(found)
 	switch len(found) {
 	case 1:
 		return found[0], nil

app/assembly/builtin/builtin.go

@@ -10,6 +10,7 @@ import (
 	"aego/modules/dataasset"
 	"aego/modules/debug"
 	"aego/modules/display"
+	"aego/modules/gameplay"
 	inputmod "aego/modules/input"
 	"aego/modules/physics"
 	"aego/modules/render2d"
@@ -76,6 +77,10 @@ func cameraEntry() assembly.Entry {
 	return assembly.Entry{ID: camera.ID, Requires: []string{scripting.ID}, New: func(assembly.Options) module.Module { return camera.New() }}
 }
 
+func gameplayEntry() assembly.Entry {
+	return assembly.Entry{ID: gameplay.ID, Requires: []string{physics.ID, scripting.ID}, New: func(assembly.Options) module.Module { return gameplay.New() }}
+}
+
 func dataEntry() assembly.Entry {
 	return assembly.Entry{ID: dataasset.ID, New: func(assembly.Options) module.Module { return dataasset.New() }}
 }
@@ -90,5 +95,5 @@ func savegameEntry() assembly.Entry {
 
 func Default() assembly.Catalog {
 	return assembly.Catalog{core(), dataEntry(), inputEntry(), render2dEntry(), render3dEntry(), scriptEntry(), physicsEntry(), debugEntry(),
-		displayEntry(), audioEntry(), accessibilityEntry(), settingsEntry(), tweenEntry(), cameraEntry(), spawnEntry(), savegameEntry()}
+		displayEntry(), audioEntry(), accessibilityEntry(), settingsEntry(), tweenEntry(), cameraEntry(), gameplayEntry(), spawnEntry(), savegameEntry()}
 }

app/assembly/editors/editors.go

@@ -2,10 +2,14 @@ package editors
 
 import (
 	"aego/app/assembly"
+	"aego/modules/audio"
+	audioeditor "aego/modules/audio/editor"
 	"aego/modules/camera"
 	cameraeditor "aego/modules/camera/editor"
 	"aego/modules/debug"
 	debugeditor "aego/modules/debug/editor"
+	"aego/modules/gameplay"
+	gameplayeditor "aego/modules/gameplay/editor"
 	inputmod "aego/modules/input"
 	inputeditor "aego/modules/input/editor"
 	"aego/modules/physics"
@@ -23,5 +27,7 @@ func With(c assembly.Catalog) assembly.Catalog {
 		With(render3d.ID, render3deditor.Hook).
 		With(physics.ID, physicseditor.Hook).
 		With(camera.ID, cameraeditor.Hook).
+		With(gameplay.ID, gameplayeditor.Hook).
+		With(audio.ID, audioeditor.Hook).
 		With(debug.ID, debugeditor.Hook)
 }

app/assembly/playground/playground.go

@@ -4,13 +4,17 @@ import (
 	"aego/app/assembly"
 	"aego/engine/base"
 	"aego/engine/module"
+	"aego/modules/audio"
 	"aego/modules/camera"
 	"aego/modules/debug"
+	"aego/modules/gameplay"
 	inputmod "aego/modules/input"
 	"aego/modules/physics"
 	"aego/modules/render2d"
 	"aego/modules/render3d"
+	"aego/modules/savegame"
 	"aego/modules/scripting"
+	"aego/modules/spawn"
 	"aego/modules/tween"
 	"aego/script/stdlib"
 	"aego/script/vm"
@@ -28,7 +32,11 @@ func Catalog() assembly.Catalog {
 		{ID: debug.ID, New: func(assembly.Options) module.Module { return debug.New() }},
 		{ID: tween.ID, Requires: []string{scripting.ID}, New: func(assembly.Options) module.Module { return tween.New() }},
 		{ID: camera.ID, Requires: []string{scripting.ID}, New: func(assembly.Options) module.Module { return camera.New() }},
+		{ID: gameplay.ID, Requires: []string{physics.ID, scripting.ID}, New: func(assembly.Options) module.Module { return gameplay.New() }},
 		{ID: render3d.ID, New: func(assembly.Options) module.Module { return render3d.New() }},
+		{ID: spawn.ID, New: func(assembly.Options) module.Module { return spawn.New() }},
+		{ID: savegame.ID, Requires: []string{scripting.ID, spawn.ID}, New: func(assembly.Options) module.Module { return savegame.New() }},
+		{ID: audio.ID, New: func(assembly.Options) module.Module { return audio.New() }},
 	}
 }
 

app/assembly/playground/saves.go

@@ -0,0 +1,61 @@
+package playground
+
+import (
+	"io/fs"
+	"path"
+	"sort"
+	"strings"
+	"time"
+
+	"aego/contracts/persistence"
+	"aego/engine"
+	"aego/platform"
+	"aego/save"
+)
+
+// UseMemorySaves gives e a save store kept in memory, for runs in a browser page that must not touch the visitor's storage.
+func UseMemorySaves(e *engine.Engine) {
+	e.SetService(persistence.StoreID, save.NewStoreFS("saves", &memUser{files: map[string][]byte{}}))
+}
+
+type memUser struct {
+	files map[string][]byte
+}
+
+func (m *memUser) ReadFile(p string) ([]byte, error) {
+	data, ok := m.files[path.Clean(p)]
+	if !ok {
+		return nil, fs.ErrNotExist
+	}
+	return append([]byte(nil), data...), nil
+}
+
+func (m *memUser) WriteFile(p string, data []byte) error {
+	m.files[path.Clean(p)] = append([]byte(nil), data...)
+	return nil
+}
+
+func (m *memUser) Remove(p string) error {
+	delete(m.files, path.Clean(p))
+	return nil
+}
+
+func (m *memUser) Stat(p string) (platform.UserEntry, error) {
+	data, ok := m.files[path.Clean(p)]
+	if !ok {
+		return platform.UserEntry{}, fs.ErrNotExist
+	}
+	return platform.UserEntry{Name: path.Base(p), Size: int64(len(data)), Mod: time.Time{}}, nil
+}
+
+func (m *memUser) List(dir string) ([]platform.UserEntry, error) {
+	prefix := path.Clean(dir) + "/"
+	var out []platform.UserEntry
+	for p, data := range m.files {
+		if rest, ok := strings.CutPrefix(p, prefix); ok && !strings.Contains(rest, "/") {
+			out = append(out, platform.UserEntry{Name: rest, Size: int64(len(data))})
+		}
+	}
+	sort.Slice(out, func(i, j int) bool { return out[i].Name < out[j].Name })
+	return out, nil
+}

app/assembly/playground/try.go

@@ -0,0 +1,62 @@
+package playground
+
+import (
+	"encoding/base64"
+	"strings"
+
+	"aego/asset"
+	"aego/asset/loader"
+	"aego/core/ids"
+	"aego/script/bytecode"
+	"aego/vfs"
+	"aego/vfs/memfs"
+)
+
+// EncodeTry packs the compiled script of a try scene for a docs page: base64 modules joined by commas.
+func EncodeTry(mods []*bytecode.Module) string {
+	parts := make([]string, len(mods))
+	for i, m := range mods {
+		parts[i] = base64.StdEncoding.EncodeToString(bytecode.Encode(m))
+	}
+	return strings.Join(parts, ",")
+}
+
+func DecodeTry(code string) ([]*bytecode.Module, error) {
+	if code == "" {
+		return nil, nil
+	}
+	var mods []*bytecode.Module
+	for _, part := range strings.Split(code, ",") {
+		b, err := base64.StdEncoding.DecodeString(part)
+		if err != nil {
+			return nil, err
+		}
+		m, err := bytecode.Decode(b)
+		if err != nil {
+			return nil, err
+		}
+		mods = append(mods, m)
+	}
+	return mods, nil
+}
+
+// MountTry gives the loader the prefabs of a try scene, keyed by asset id; none unmounts them.
+func MountTry(l *loader.Loader, prefabs map[string]string) error {
+	idx := asset.NewIndex()
+	files := map[string][]byte{}
+	for key, text := range prefabs {
+		id, err := ids.ParseAssetID(key)
+		if err != nil {
+			return err
+		}
+		p := id.String() + ".aeprefab"
+		files[p] = []byte(text)
+		idx.Put(asset.Entry{ID: id, Kind: asset.ArtPrefab, Name: p, Source: p,
+			Artifacts: []asset.Artifact{{Kind: asset.ArtPrefab, Path: "try://" + p}}})
+	}
+	fs, err := vfs.New(vfs.Mount{Scheme: "try", ReadOnly: true, Source: memfs.New(files)})
+	if err != nil {
+		return err
+	}
+	return l.Mount(idx, fs)
+}

app/bootstrap/bootstrap.go

@@ -9,6 +9,7 @@ import (
 	"sort"
 	"strings"
 
+	"aego/app/proc"
 	"aego/core/errs"
 	"aego/core/log"
 	"aego/project"
@@ -169,6 +170,7 @@ func Build(p *project.Project, t Target, mode Mode, engineVersion string, lg *lo
 	cmd := exec.Command("go", args...)
 	cmd.Dir = p.Root
 	cmd.Env = append(os.Environ(), "GOOS="+t.OS, "GOARCH="+t.Arch)
+	proc.Hide(cmd)
 	output, err := cmd.CombinedOutput()
 	if err != nil {
 		os.RemoveAll(outDir)

app/bootstrap/icons.go

@@ -8,6 +8,7 @@ import (
 	"path/filepath"
 	"strings"
 
+	"aego/app/proc"
 	"aego/core/errs"
 	"aego/core/log"
 	"aego/project"
@@ -32,12 +33,14 @@ func RunIcons(p *project.Project, engineVersion string, out io.Writer) (int, err
 	defer os.Remove(bin)
 	build := exec.Command("go", "build", "-tags", strings.Join(t.Tags, ","), "-o", bin, "./.aego/generated/icons")
 	build.Dir = p.Root
+	proc.Hide(build)
 	if output, err := build.CombinedOutput(); err != nil {
 		return 2, errs.New(errs.BuildFailed, "native icons helper does not compile",
 			log.F("output", strings.TrimSpace(string(output))))
 	}
 	run := exec.Command(bin)
 	run.Dir, run.Stdout, run.Stderr = p.Root, out, out
+	proc.Hide(run)
 	err = run.Run()
 	var ee *exec.ExitError
 	if errors.As(err, &ee) {

app/bootstrap/manifest.go

@@ -6,6 +6,7 @@ import (
 	"path/filepath"
 	"strings"
 
+	"aego/app/proc"
 	"aego/core/errs"
 	"aego/core/log"
 	"aego/project"
@@ -52,6 +53,7 @@ func BuildManifest(p *project.Project, engineVersion string, lg *log.Logger) (st
 	defer os.Remove(bin)
 	build := exec.Command("go", "build", "-tags", strings.Join(t.Tags, ","), "-o", bin, "./.aego/generated/manifest")
 	build.Dir = p.Root
+	proc.Hide(build)
 	if output, err := build.CombinedOutput(); err != nil {
 		return "", errs.New(errs.BuildFailed, "native bindings helper does not compile",
 			log.F("output", strings.TrimSpace(string(output))))
@@ -59,6 +61,7 @@ func BuildManifest(p *project.Project, engineVersion string, lg *log.Logger) (st
 	tmp := out + ".tmp"
 	run := exec.Command(bin, tmp)
 	run.Dir = p.Root
+	proc.Hide(run)
 	if output, err := run.CombinedOutput(); err != nil {
 		os.Remove(tmp)
 		return "", errs.New(errs.BuildFailed, "native module Register failed",

app/brand/brand.go

@@ -0,0 +1,33 @@
+package brand
+
+import (
+	"bytes"
+	"embed"
+	"image"
+	"image/png"
+	"strconv"
+)
+
+//go:embed png/aego-*.png
+var files embed.FS
+
+var windowSizes = []int{16, 24, 32, 48, 64, 128, 256}
+
+func PNG(n int) ([]byte, bool) {
+	data, err := files.ReadFile("png/aego-" + strconv.Itoa(n) + ".png")
+	return data, err == nil
+}
+
+func Window() []image.Image {
+	out := make([]image.Image, 0, len(windowSizes))
+	for _, n := range windowSizes {
+		data, ok := PNG(n)
+		if !ok {
+			continue
+		}
+		if img, err := png.Decode(bytes.NewReader(data)); err == nil {
+			out = append(out, img)
+		}
+	}
+	return out
+}

app/docstool/registry.go

@@ -21,7 +21,8 @@ import (
 	"aego/script/workspace"
 )
 
-func build(p *project.Project, mods []module.Module, diagnose func(string, *docs.DiagInfo)) (*docs.Registry, *workspace.Workspace, error) {
+// build assembles the registry; with pg it also compiles the diagnostics examples and the try scripts.
+func build(p *project.Project, mods []module.Module, pg *playground.Playground) (*docs.Registry, *workspace.Workspace, error) {
 	types, err := assembly.NewTypes()
 	if err != nil {
 		return nil, nil, err
@@ -42,7 +43,10 @@ func build(p *project.Project, mods []module.Module, diagnose func(string, *docs
 		return nil, nil, err
 	}
 	src := docs.SourcesOf(bm, types.Schema(), man)
-	src.Diagnose = diagnose
+	if pg != nil {
+		src.Diagnose = diagnoser(pg)
+		src.CompileTry = pg.TryCode
+	}
 	var ws *workspace.Workspace
 	if p != nil {
 		ws, err = workspace.Open(workspace.Config{Root: p.Root, Module: p.Module, Scripts: p.ScriptsDir(), Bindings: reg.Table(), Docs: bm})
@@ -67,13 +71,13 @@ func Registry(p *project.Project, mods []module.Module) (*docs.Registry, error)
 	return r, err
 }
 
-// ExportRegistry is Registry with the diagnostics examples compiled for their messages and positions.
+// ExportRegistry is Registry with the diagnostics examples compiled for their messages and positions, and the try scripts compiled.
 func ExportRegistry(p *project.Project, mods []module.Module) (*docs.Registry, error) {
 	pg, err := playground.New()
 	if err != nil {
 		return nil, err
 	}
-	r, _, err := build(p, mods, diagnoser(pg))
+	r, _, err := build(p, mods, pg)
 	return r, err
 }
 

app/docstool/try.go

@@ -41,9 +41,16 @@ func CheckTry(reg *docs.Registry, w io.Writer) int {
 			}
 			msgs = append(msgs, msg)
 		}
-		switch res := pg.PlayScene(e.ID, []byte(e.Try)); {
+		var code string
+		var err error
+		if e.TryScript != "" {
+			code, err = pg.TryCode(e.TryScript)
+		}
+		switch res := pg.PlayScene(e.ID, []byte(e.Try), code, e.TryPrefabs); {
 		case !sandbox[e.ID]:
 			add("belongs to a module the docs runtime does not include")
+		case err != nil:
+			add("script does not compile: " + err.Error())
 		case !res.Started:
 			add("does not load: " + res.Error)
 		default:

app/docsview/app.go

@@ -75,6 +75,7 @@ type App struct {
 	ui       *core.Context
 	clip     *docsession.Clipboard
 	session  *docsession.Session
+	scripts  *scriptHost
 	insp     *inspector.Panel
 	game     *gameview.Panel
 	list     *draw.List
@@ -143,15 +144,17 @@ func New(opt Options) (*App, error) {
 		return nil, err
 	}
 	a.e.SetService(loader.ServiceID, a.loader)
+	playmods.UseMemorySaves(a.e)
 	a.e.SetService(renderhost.ServiceID, a.renderer)
 	if err := a.man.Init(&module.InitContext{Engine: a.e, Assets: a.loader, Log: a.log, Editor: true, Sections: sections}); err != nil {
 		a.Close()
 		return nil, err
 	}
 	a.initUI()
+	a.scripts = &scriptHost{reg: reg, types: a.types, man: a.man, log: a.log}
 	a.session = docsession.New(docsession.Options{
 		Engine: a.e, Renderer: a.renderer, Loader: a.loader, Types: a.types, Sections: sections,
-		Scripts:   &scriptHost{reg: reg, types: a.types, man: a.man, log: a.log},
+		Scripts:   a.scripts,
 		UI:        a.ui,
 		Clipboard: a.clip,
 		Log:       a.log,

app/docsview/app_test.go

@@ -3,6 +3,7 @@
 package docsview
 
 import (
+	"encoding/json"
 	"strings"
 	"testing"
 
@@ -46,11 +47,22 @@ func errorsOf(a *App) []string {
 
 func TestTryScenesRun(t *testing.T) {
 	a := newHeadless(t)
+	p, err := playground.New()
+	if err != nil {
+		t.Fatal(err)
+	}
 	for _, e := range tries(t) {
-		if err := a.session.Load([]byte(e.Try), e.TrySelect); err != nil {
-			t.Fatalf("%s: %v", e.ID, err)
+		var code string
+		if e.TryScript != "" {
+			if code, err = p.TryCode(e.TryScript); err != nil {
+				t.Fatalf("%s: %v", e.ID, err)
+			}
 		}
-		if err := a.Step(60); err != nil {
+		req, _ := json.Marshal(map[string]any{"scene": e.Try, "select": e.TrySelect, "code": code, "prefabs": e.TryPrefabs})
+		if r := a.Call("load", req); r.Error != "" {
+			t.Fatalf("%s: %s", e.ID, r.Error)
+		}
+		if err := a.Step(400); err != nil {
 			t.Fatalf("%s: %v", e.ID, err)
 		}
 		st := a.session.State()

app/docsview/bridge.go

@@ -6,16 +6,19 @@ import (
 	"encoding/json"
 	"strconv"
 
+	playmods "aego/app/assembly/playground"
 	"aego/editor/core/docsession"
 	"aego/scene/sceneio"
 )
 
 type request struct {
-	Scene     string  `json:"scene"`
-	Select    string  `json:"select"`
-	Component string  `json:"component"`
-	Field     string  `json:"field"`
-	Value     float64 `json:"value"`
+	Scene     string            `json:"scene"`
+	Select    string            `json:"select"`
+	Code      string            `json:"code"`
+	Prefabs   map[string]string `json:"prefabs"`
+	Component string            `json:"component"`
+	Field     string            `json:"field"`
+	Value     float64           `json:"value"`
 }
 
 type Reply struct {
@@ -37,7 +40,16 @@ func (a *App) Call(method string, payload []byte) Reply {
 	var err error
 	switch method {
 	case "load":
-		err = s.Load([]byte(req.Scene), req.Select)
+		mods, derr := playmods.DecodeTry(req.Code)
+		if err = derr; err == nil {
+			err = a.scripts.use(mods)
+		}
+		if err == nil {
+			err = playmods.MountTry(a.loader, req.Prefabs)
+		}
+		if err == nil {
+			err = s.Load([]byte(req.Scene), req.Select)
+		}
 	case "reset":
 		err = s.Reset()
 	case "text":

app/docsview/scripts.go

@@ -22,6 +22,15 @@ type scriptHost struct {
 	mods  []*bytecode.Module
 }
 
+// use makes mods the scripts of the next scene and publishes their types, so the scene keeps their fields.
+func (h *scriptHost) use(mods []*bytecode.Module) error {
+	if err := scriptruntime.Publish(h.types.Schema(), mods, h.reg.Surface()); err != nil {
+		return err
+	}
+	h.mods = mods
+	return nil
+}
+
 func (h *scriptHost) Errors() int {
 	return 0
 }

app/edit/boot.go

@@ -0,0 +1,27 @@
+package edit
+
+import (
+	"os"
+	"os/exec"
+	"runtime"
+	"strings"
+
+	"aego/engine"
+	"aego/platform"
+)
+
+func startBoot(verb string) {
+	wd, _ := os.Getwd()
+	exe, _ := os.Executable()
+	gobin, err := exec.LookPath("go")
+	if err != nil {
+		gobin = "not on PATH"
+	}
+	_ = platform.StartBoot(platform.DefaultBootPath(),
+		"aego "+engine.Version+" "+runtime.GOOS+"/"+runtime.GOARCH+" "+verb,
+		"exe "+exe,
+		"args "+strings.Join(os.Args[1:], " "),
+		"cwd "+wd,
+		"go "+gobin,
+	)
+}

app/edit/export.go

@@ -1,14 +1,19 @@
 package edit
 
 import (
+	"net"
+	"net/http"
 	"os/exec"
+	"path/filepath"
 	"runtime"
+	"sync"
 
 	"aego/app/bootstrap"
 	"aego/app/export"
 	"aego/app/projects"
 	"aego/asset/pipeline"
 	"aego/editor/core/services"
+	"aego/editor/core/sysopen"
 	"aego/engine/problems"
 	"aego/project"
 )
@@ -87,3 +92,47 @@ func (x *exporter) Reveal(path string) error {
 	}
 	return cmd.Start()
 }
+
+var webServers sync.Map
+
+func serveWeb(dir string) (string, error) {
+	if u, ok := webServers.Load(dir); ok {
+		return u.(string), nil
+	}
+	ln, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		return "", err
+	}
+	files := http.FileServer(http.Dir(dir))
+	h := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Cross-Origin-Opener-Policy", "same-origin")
+		w.Header().Set("Cross-Origin-Embedder-Policy", "require-corp")
+		w.Header().Set("Cache-Control", "no-store")
+		files.ServeHTTP(w, r)
+	})
+	go http.Serve(ln, h)
+	u := "http://" + ln.Addr().String() + "/"
+	webServers.Store(dir, u)
+	return u, nil
+}
+
+func (x *exporter) Run(out, target string) error {
+	path, err := export.Launchable(x.p, target, out)
+	if err != nil {
+		return err
+	}
+	t, _ := export.ParseTarget(target)
+	switch {
+	case t.Web():
+		u, err := serveWeb(path)
+		if err != nil {
+			return err
+		}
+		return sysopen.Open(u)
+	case t.OS == "darwin":
+		return exec.Command("open", path).Start()
+	}
+	cmd := exec.Command(path)
+	cmd.Dir = filepath.Dir(path)
+	return cmd.Start()
+}

app/edit/launch_flow_test.go

@@ -0,0 +1,50 @@
+package edit
+
+import (
+	"path/filepath"
+	"testing"
+
+	"aego/app/projects"
+	"aego/editor/shell/launcher"
+	"aego/project"
+)
+
+func TestLauncherCreatesAndOpens(t *testing.T) {
+	recent := filepath.Join(t.TempDir(), "recent")
+	ls, err := OpenLauncher(Config{Headless: true, Recent: recent})
+	if err != nil {
+		t.Fatal(err)
+	}
+	ls.UI.SetTab(launcher.TabNew)
+	dir := filepath.Join(t.TempDir(), "Aego Projects", "game")
+	if _, err := ls.UI.Create(dir, projects.Template2D, "", ""); err != nil {
+		ls.Close()
+		t.Fatal(err)
+	}
+	for i := 0; i < 3 && ls.Step(); i++ {
+	}
+	ls.Close()
+	root, ok := ls.UI.Result()
+	if !ok {
+		t.Fatal("the launcher has no result")
+	}
+	p, err := project.Load(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	s, err := Open(p, Config{Headless: true, NoWatch: true, Recent: recent})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer s.Close()
+	for i := 0; i < 3; i++ {
+		s.Step()
+	}
+	if s.App.Context().Docs.Active() == nil {
+		t.Fatal("no scene is open after creating the project")
+	}
+	list, _ := launcher.LoadRecent(recent)
+	if len(list) == 0 || list[0].Path != root {
+		t.Fatalf("recent list %+v", list)
+	}
+}

app/edit/logs.go

@@ -0,0 +1,78 @@
+package edit
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"aego/core/log"
+)
+
+const keepLogs = 10
+
+type logFile struct {
+	f *os.File
+}
+
+func LogsDir() string {
+	dir, err := os.UserCacheDir()
+	if err != nil {
+		return ""
+	}
+	return filepath.Join(dir, "aego", "logs")
+}
+
+func attachLogs(cfg *Config) *logFile {
+	if cfg.Logger == nil {
+		cfg.Logger = log.New(log.NewTextSink(os.Stderr))
+		if cfg.Debug {
+			cfg.Logger.SetLevel(log.Debug)
+		}
+	}
+	dir := LogsDir()
+	if dir == "" || os.MkdirAll(dir, 0o755) != nil {
+		return &logFile{}
+	}
+	name := "editor-" + time.Now().Format("20060102-150405") + "-" + strconv.Itoa(os.Getpid()) + ".log"
+	f, err := os.Create(filepath.Join(dir, name))
+	if err != nil {
+		return &logFile{}
+	}
+	cfg.Logger.AddSink(log.NewTextSink(f))
+	pruneLogs(dir)
+	return &logFile{f: f}
+}
+
+func (l *logFile) writer(w io.Writer) io.Writer {
+	if l.f == nil {
+		return w
+	}
+	return io.MultiWriter(w, l.f)
+}
+
+func (l *logFile) close() {
+	if l.f != nil {
+		l.f.Close()
+	}
+}
+
+func pruneLogs(dir string) {
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return
+	}
+	var names []string
+	for _, e := range entries {
+		if !e.IsDir() && strings.HasSuffix(e.Name(), ".log") {
+			names = append(names, e.Name())
+		}
+	}
+	sort.Strings(names)
+	for i := 0; i+keepLogs < len(names); i++ {
+		os.Remove(filepath.Join(dir, names[i]))
+	}
+}

app/edit/physics_test.go

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

app/edit/relaunch.go

@@ -0,0 +1,77 @@
+package edit
+
+import (
+	"os"
+	"os/exec"
+	"strings"
+
+	"aego/app/proc"
+	"aego/editor/core/session"
+)
+
+const (
+	EnvEditorExe  = "AEGO_EDITOR_EXE"
+	EnvEditorVerb = "AEGO_EDITOR_VERB"
+)
+
+func markEntry(verb string) {
+	if os.Getenv(EnvEditorExe) != "" {
+		return
+	}
+	if img := os.Getenv("APPIMAGE"); img != "" {
+		os.Setenv(EnvEditorExe, img)
+		os.Setenv(EnvEditorVerb, "")
+		return
+	}
+	exe, err := os.Executable()
+	if err != nil {
+		return
+	}
+	os.Setenv(EnvEditorExe, exe)
+	os.Setenv(EnvEditorVerb, verb)
+}
+
+func relaunchArgs(verb, target, tab string) []string {
+	if verb != "" {
+		args := []string{verb}
+		if target != "" {
+			args = append(args, target)
+		}
+		if tab != "" {
+			args = append(args, "--launcher", tab)
+		}
+		return args
+	}
+	var args []string
+	if tab != "" {
+		args = append(args, "-launcher", tab)
+	}
+	if target != "" {
+		args = append(args, target)
+	}
+	return args
+}
+
+func withoutEnv(env []string, key string) []string {
+	out := env[:0:0]
+	for _, kv := range env {
+		if !strings.HasPrefix(kv, key+"=") {
+			out = append(out, kv)
+		}
+	}
+	return out
+}
+
+func Relaunch(target, tab string) error {
+	exe := os.Getenv(EnvEditorExe)
+	if exe == "" {
+		var err error
+		if exe, err = os.Executable(); err != nil {
+			return err
+		}
+	}
+	cmd := exec.Command(exe, relaunchArgs(os.Getenv(EnvEditorVerb), target, tab)...)
+	cmd.Env = withoutEnv(os.Environ(), session.EnvSupervised)
+	proc.Hide(cmd)
+	return cmd.Start()
+}

app/edit/relaunch_test.go

@@ -0,0 +1,77 @@
+package edit
+
+import (
+	"os"
+	"path/filepath"
+	"slices"
+	"testing"
+
+	"aego/project"
+)
+
+func TestRelaunchArgs(t *testing.T) {
+	cases := []struct {
+		verb, target, tab string
+		want              []string
+	}{
+		{"", "/p", "", []string{"/p"}},
+		{"", "", "recent", []string{"-launcher", "recent"}},
+		{"edit", "/p", "", []string{"edit", "/p"}},
+		{"edit", "", "new", []string{"edit", "--launcher", "new"}},
+	}
+	for _, c := range cases {
+		if got := relaunchArgs(c.verb, c.target, c.tab); !slices.Equal(got, c.want) {
+			t.Errorf("%q %q %q: %v, want %v", c.verb, c.target, c.tab, got, c.want)
+		}
+	}
+	env := withoutEnv([]string{"A=1", "AEGO_SUPERVISED=1", "B=2"}, "AEGO_SUPERVISED")
+	if !slices.Equal(env, []string{"A=1", "B=2"}) {
+		t.Fatal(env)
+	}
+}
+
+func TestResolveArg(t *testing.T) {
+	root := t.TempDir()
+	os.WriteFile(filepath.Join(root, project.FileName), []byte("project version=1 {\n}\n"), 0o644)
+	os.MkdirAll(filepath.Join(root, "scenes"), 0o755)
+	scene := filepath.Join(root, "scenes", "main.aescene")
+	os.WriteFile(scene, []byte("scene version=1 {\n}\n"), 0o644)
+	if dir, file := resolveArg(filepath.Join(root, project.FileName)); dir != root || file != "" {
+		t.Fatalf("project.aego: %q %q", dir, file)
+	}
+	dir, file := resolveArg(scene)
+	if dir != filepath.Join(root, "scenes") || file != scene {
+		t.Fatalf("scene: %q %q", dir, file)
+	}
+	if rel, ok := relInside(root, file); !ok || rel != "scenes/main.aescene" {
+		t.Fatalf("rel %q %v", rel, ok)
+	}
+}
+
+func TestNewer(t *testing.T) {
+	cases := []struct {
+		latest, current string
+		want            bool
+	}{
+		{"v0.9.0", "0.9.0-beta.1", true},
+		{"v0.9.0-beta.1", "0.9.0-beta.1", false},
+		{"v0.9.0-beta.2", "0.9.0-beta.1", true},
+		{"v0.8.5", "0.9.0-beta.1", false},
+		{"v1.0.0", "0.9.0", true},
+		{"nightly", "0.9.0", false},
+		{"", "0.9.0", false},
+	}
+	for _, c := range cases {
+		if got := newer(c.latest, c.current); got != c.want {
+			t.Errorf("newer(%q, %q) = %v", c.latest, c.current, got)
+		}
+	}
+	file := filepath.Join(t.TempDir(), "update")
+	st := updateState{Enabled: false, Latest: "v1.2.3"}
+	if err := saveUpdate(file, st); err != nil {
+		t.Fatal(err)
+	}
+	if back := loadUpdate(file); back.Enabled || back.Latest != "v1.2.3" {
+		t.Fatalf("round trip %+v", back)
+	}
+}

app/edit/tests.go

@@ -0,0 +1,17 @@
+package edit
+
+import (
+	"bytes"
+
+	"aego/app/run"
+)
+
+func (s *Session) runTests(done func(out string, failed bool)) error {
+	p, mods := s.Project, s.mods
+	go func() {
+		var buf bytes.Buffer
+		code := run.Tool(p, []string{"test", "-v"}, &buf, &buf, mods...)
+		s.Engine.Jobs().OnMain(func() { done(buf.String(), code != 0) })
+	}()
+	return nil
+}

app/export/build.go

@@ -12,6 +12,7 @@ import (
 
 	"aego/app/export/icon"
 	"aego/app/export/winres"
+	"aego/app/proc"
 	"aego/core/errs"
 	"aego/core/log"
 	"aego/runtime/bundle"
@@ -121,7 +122,7 @@ func (j *job) resources(dir string) error {
 	var icons []winres.Icon
 	if j.icon != nil {
 		for _, n := range winres.IconSizes {
-			data, err := icon.PNG(icon.Resize(j.icon, n, n))
+			data, err := icon.PNG(icon.Sized(j.icon, n))
 			if err != nil {
 				return err
 			}
@@ -175,6 +176,7 @@ func (j *job) build() error {
 	args = append(args, pkg)
 	cmd := exec.Command("go", args...)
 	cmd.Dir = root
+	proc.Hide(cmd)
 	cgo := "CGO_ENABLED=1"
 	if j.t.Web() {
 		cgo = "CGO_ENABLED=0"

app/export/data.go

@@ -189,8 +189,9 @@ func (j *job) license(lib bundle.Lib, src, name string) bundle.Lib {
 }
 
 func (j *job) libs() []bundle.Lib {
+	vorbis := j.license(bundle.Lib{Name: "oggvorbis", Link: "static"}, filepath.Join(j.opt.Engine, "audio", "codec", "vorbis", "internal", "oggvorbis", "LICENSE"), "oggvorbis.txt")
 	if j.t.Web() {
-		return []bundle.Lib{j.license(bundle.Lib{Name: "Go wasm_exec.js", Link: "script", File: webExec}, filepath.Join(j.goroot, "LICENSE"), "Go.txt")}
+		return []bundle.Lib{j.license(bundle.Lib{Name: "Go wasm_exec.js", Link: "script", File: webExec}, filepath.Join(j.goroot, "LICENSE"), "Go.txt"), vorbis}
 	}
-	return []bundle.Lib{j.license(bundle.Lib{Name: "SDL3", Link: "static"}, j.sdlLicense(), "SDL3.txt")}
+	return []bundle.Lib{j.license(bundle.Lib{Name: "SDL3", Link: "static"}, j.sdlLicense(), "SDL3.txt"), vorbis}
 }

app/export/export.go

@@ -307,3 +307,21 @@ func (j *job) prepareOut() error {
 	}
 	return nil
 }
+
+func Launchable(p *project.Project, target, out string) (string, error) {
+	t, err := ParseTarget(target)
+	if err != nil {
+		return "", err
+	}
+	if !t.Web() && !t.Host() {
+		return "", errs.New(errs.EngineConfig, "the build is for "+t.String()+"; copy it to that system to run it")
+	}
+	l := layoutFor(t, out, p)
+	switch {
+	case t.Web():
+		return l.root, nil
+	case t.OS == "darwin":
+		return l.app, nil
+	}
+	return l.binary(), nil
+}

app/export/macos/macos.go

@@ -13,6 +13,12 @@ import (
 	"aego/core/errs"
 )
 
+type DocType struct {
+	Name       string
+	Extensions []string
+	Role       string
+}
+
 type Info struct {
 	Name       string
 	Executable string
@@ -22,6 +28,7 @@ type Info struct {
 	MinOS      string
 	Category   string
 	Copyright  string
+	Documents  []DocType
 }
 
 var icnsTypes = []struct {
@@ -80,6 +87,23 @@ func Plist(i Info, iconFile string) []byte {
 	str("LSMinimumSystemVersion", i.MinOS)
 	str("LSApplicationCategoryType", i.Category)
 	str("NSHumanReadableCopyright", i.Copyright)
+	if len(i.Documents) > 0 {
+		b.WriteString("\t<key>CFBundleDocumentTypes</key>\n\t<array>\n")
+		for _, d := range i.Documents {
+			role := d.Role
+			if role == "" {
+				role = "Editor"
+			}
+			b.WriteString("\t\t<dict>\n\t\t\t<key>CFBundleTypeName</key>\n\t\t\t<string>" + esc(d.Name) + "</string>\n")
+			b.WriteString("\t\t\t<key>CFBundleTypeRole</key>\n\t\t\t<string>" + esc(role) + "</string>\n")
+			b.WriteString("\t\t\t<key>CFBundleTypeExtensions</key>\n\t\t\t<array>\n")
+			for _, e := range d.Extensions {
+				b.WriteString("\t\t\t\t<string>" + esc(e) + "</string>\n")
+			}
+			b.WriteString("\t\t\t</array>\n\t\t</dict>\n")
+		}
+		b.WriteString("\t</array>\n")
+	}
 	b.WriteString("\t<key>NSHighResolutionCapable</key>\n\t<true/>\n")
 	b.WriteString("</dict>\n</plist>\n")
 	return []byte(b.String())
@@ -92,7 +116,7 @@ func ICNS(src image.Image) ([]byte, error) {
 		data, ok := cache[t.size]
 		if !ok {
 			var err error
-			if data, err = icon.PNG(icon.Resize(src, t.size, t.size)); err != nil {
+			if data, err = icon.PNG(icon.Sized(src, t.size)); err != nil {
 				return nil, err
 			}
 			cache[t.size] = data

app/export/macos/macos_test.go

@@ -23,3 +23,12 @@ func TestPlistEscapesAndBundleID(t *testing.T) {
 		t.Fatal(p)
 	}
 }
+
+func TestPlistDocumentTypes(t *testing.T) {
+	out := string(Plist(Info{Name: "Aego", Executable: "aego", ID: "ru.akarpov.aego", Documents: []DocType{{Name: "Aego Scene", Extensions: []string{"aescene"}}}}, ""))
+	for _, want := range []string{"<key>CFBundleDocumentTypes</key>", "<string>Aego Scene</string>", "<string>Editor</string>", "<string>aescene</string>"} {
+		if !strings.Contains(out, want) {
+			t.Fatalf("plist has no %s:\n%s", want, out)
+		}
+	}
+}

app/export/pack.go

@@ -29,7 +29,7 @@ func (j *job) pack() error {
 
 func (j *job) packLinux() error {
 	if j.icon != nil {
-		data, err := icon.PNG(icon.Resize(j.icon, 256, 256))
+		data, err := icon.PNG(icon.Sized(j.icon, 256))
 		if err != nil {
 			return err
 		}

app/export/web.go

@@ -26,6 +26,7 @@ var webFS embed.FS
 const (
 	CodeWebAsset  = "EXP010"
 	CodeWebNative = "EXP011"
+	CodeWebMP3    = "EXP012"
 	WebWasm       = "game.wasm"
 	WebFiles      = "files.json"
 	WebBudget     = 8 << 20
@@ -68,7 +69,11 @@ func CheckWeb(s *Snapshot, native bool) []problems.Diagnostic {
 		out = append(out, diag(CodeWebNative, problems.Warning,
 			"the native Go module is compiled to WebAssembly: it must build without cgo and must not use files, processes or the network", "native/"))
 	}
+	_, ffmpegErr := exec.LookPath("ffmpeg")
 	s.idx.Each(func(e *asset.Entry) {
+		if ffmpegErr != nil && strings.EqualFold(filepath.Ext(e.Source), ".mp3") {
+			out = append(out, diag(CodeWebMP3, problems.Warning, e.Source+" is an mp3; it is converted to ogg on import, which needs ffmpeg in PATH", e.Source))
+		}
 		if e.Missing || exportSkip(e.Kind) || !webUnsupported(e.Kind) {
 			return
 		}
@@ -156,7 +161,7 @@ func (j *job) packWeb() error {
 		return err
 	}
 	if j.icon != nil {
-		data, err := icon.PNG(icon.Resize(j.icon, webIconSize, webIconSize))
+		data, err := icon.PNG(icon.Sized(j.icon, webIconSize))
 		if err != nil {
 			return err
 		}