Made loading of audio samples more graceful (game will play without them).

TODO.md

@@ -11,4 +11,5 @@
 - [ ] Fix z-fighting of monsters.
 - [ ] Add exploding animation of monsters.
 - [ ] Add audio settings (music & sound volume).
-- [X] Hearts must be saved as well for resume.
+- [X] Hearts must be saved as well for resume.
+- [ ] Add demo mode.

cmd/tins2021/app.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"log"
+
 	"opslag.de/schobers/tins2021"
 	"opslag.de/schobers/zntg/play"
 	"opslag.de/schobers/zntg/ui"
@@ -73,7 +75,7 @@ func (a *app) Init(ctx ui.Context) error {
 		"player_move.mp3",
 	)
 	if err != nil {
-		return err
+		log.Printf("failed to load samples; %v\n", err)
 	}
 
 	return nil

cmd/tins2021/audio.go

@@ -9,6 +9,8 @@ import (
 	"github.com/faiface/beep/effects"
 	"github.com/faiface/beep/mp3"
 	"github.com/faiface/beep/speaker"
+	"github.com/pkg/errors"
+	"opslag.de/schobers/ut"
 	"opslag.de/schobers/zntg/ui"
 )
 
@@ -39,12 +41,16 @@ func NewAudioPlayer(resources ui.Resources, prefix string) *AudioPlayer {
 }
 
 func (p *AudioPlayer) LoadSample(name ...string) error {
+	var all error
 	for _, name := range name {
 		if _, err := p.openSample(name); err != nil {
-			return err
+			all = ut.ErrCombine(all, errors.Wrap(err, "failed to open sample"))
 		}
 	}
-	return nil
+	if all == nil {
+		return nil
+	}
+	return errors.WithMessage(all, "failed to open one or more samples")
 }
 
 func (p *AudioPlayer) openSample(name string) (Sample, error) {