Get view-menu to play the interface sound

internal/assetstore/sound.go

@@ -0,0 +1,78 @@
+package assetstore
+
+import (
+	"log"
+	"os"
+
+	"github.com/hajimehoshi/ebiten/audio"
+	"github.com/hajimehoshi/ebiten/audio/vorbis"
+)
+
+type Sound struct {
+	Name string
+
+	filename string
+}
+
+func (a *AssetStore) Sound(name string) (*Sound, error) {
+	name = canonical(name)
+
+	if sound, ok := a.sounds[name]; ok {
+		return sound, nil
+	}
+
+	// TODO: Data/Sounds.dat + Sounds/wh40k.ds seem to operate together to allow
+	// attributes and a .wav file to be attached to event names, which could be
+	// what we use here instead. For now, we're just using the .wav files!
+	log.Printf("Loading sound %v", name)
+
+	// FIXME: a preprocessing script is used to create these files from the
+	// original ADPCM .wav files. Instead, use the original .wav files.
+	filename, err := a.lookup(name, "wav.ogg", "Wav")
+	if err != nil {
+		return nil, err
+	}
+
+	sound := &Sound{
+		Name:     name,
+		filename: filename,
+	}
+
+	a.sounds[name] = sound
+	return sound, nil
+}
+
+func (s *Sound) Player() (*audio.Player, error) {
+	decoder, err := s.decoder()
+	if err != nil {
+		return nil, err
+	}
+
+	return audio.NewPlayer(audio.CurrentContext(), decoder)
+}
+
+func (s *Sound) InfinitePlayer() (*audio.Player, error) {
+	decoder, err := s.decoder()
+	if err != nil {
+		return nil, err
+	}
+
+	infinite := audio.NewInfiniteLoop(decoder, decoder.Size())
+
+	return audio.NewPlayer(audio.CurrentContext(), infinite)
+}
+
+func (s *Sound) decoder() (*vorbis.Stream, error) {
+	f, err := os.Open(s.filename)
+	if err != nil {
+		return nil, err
+	}
+
+	decoder, err := vorbis.Decode(audio.CurrentContext(), f)
+	if err != nil {
+		_ = f.Close()
+		return nil, err
+	}
+
+	return decoder, nil
+}