Add examples/wav

This commit is contained in:
Hajime Hoshi 2017-08-08 02:04:37 +09:00
parent e50159af12
commit 6377ee5006

85
examples/wav/main.go Normal file
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// Copyright 2017 The Ebiten Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build example
package main
import (
"log"
"github.com/hajimehoshi/ebiten"
"github.com/hajimehoshi/ebiten/audio"
"github.com/hajimehoshi/ebiten/audio/wav"
"github.com/hajimehoshi/ebiten/ebitenutil"
)
const (
screenWidth = 320
screenHeight = 240
sampleRate = 44100
)
var (
audioContext *audio.Context
audioPlayer *audio.Player
)
func init() {
var err error
audioContext, err = audio.NewContext(sampleRate)
if err != nil {
log.Fatal(err)
}
f, err := ebitenutil.OpenFile("_resources/audio/jab.wav")
if err != nil {
log.Fatal(err)
}
d, err := wav.Decode(audioContext, f)
if err != nil {
log.Fatal(err)
}
audioPlayer, err = audio.NewPlayer(audioContext, d)
if err != nil {
log.Fatal(err)
}
}
func update(screen *ebiten.Image) error {
if ebiten.IsKeyPressed(ebiten.KeyP) && !audioPlayer.IsPlaying() {
audioPlayer.Rewind()
audioPlayer.Play()
}
if err := audioContext.Update(); err != nil {
return err
}
if ebiten.IsRunningSlowly() {
return nil
}
if audioPlayer.IsPlaying() {
ebitenutil.DebugPrint(screen, "Bump!")
} else {
ebitenutil.DebugPrint(screen, "Press P to play the wav")
}
return nil
}
func main() {
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "WAV (Ebiten Demo)"); err != nil {
log.Fatal(err)
}
}