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117 lines
2.2 KiB
Go
117 lines
2.2 KiB
Go
package asset
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import (
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"bytes"
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"embed"
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"image"
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"io"
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_ "image/png"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/hajimehoshi/ebiten/v2/audio"
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"github.com/hajimehoshi/ebiten/v2/audio/vorbis"
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"github.com/hajimehoshi/ebiten/v2/audio/wav"
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)
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//go:embed image sound
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var FS embed.FS
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const tileSize = 64
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var ImgPlayer = LoadImage("image/player.png")
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const sampleRate = 44100
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var (
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audioContext = audio.NewContext(sampleRate)
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SoundHitP1 = LoadWAV(audioContext, "sound/hit.wav")
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SoundHitP2 = LoadWAV(audioContext, "sound/hit.wav")
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SoundMusic = LoadOGG(audioContext, "sound/an_individual_who_fights_on_roads.ogg", true)
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)
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func LoadImage(p string) *ebiten.Image {
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f, err := FS.Open(p)
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if err != nil {
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panic(err)
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}
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defer f.Close()
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baseImg, _, err := image.Decode(f)
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if err != nil {
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panic(err)
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}
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return ebiten.NewImageFromImage(baseImg)
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}
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func LoadBytes(p string) []byte {
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b, err := FS.ReadFile(p)
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if err != nil {
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panic(err)
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}
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return b
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}
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func LoadWAV(context *audio.Context, p string) *audio.Player {
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f, err := FS.Open(p)
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if err != nil {
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panic(err)
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}
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defer f.Close()
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stream, err := wav.DecodeWithSampleRate(sampleRate, f)
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if err != nil {
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panic(err)
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}
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player, err := context.NewPlayer(stream)
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if err != nil {
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panic(err)
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}
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// Workaround to prevent delays when playing for the first time.
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player.SetVolume(0)
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player.Play()
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player.Pause()
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player.Rewind()
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player.SetVolume(1)
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return player
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}
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func LoadOGG(context *audio.Context, p string, loop bool) *audio.Player {
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b := LoadBytes(p)
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stream, err := vorbis.DecodeWithSampleRate(sampleRate, bytes.NewReader(b))
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if err != nil {
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panic(err)
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}
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var s io.Reader
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if loop {
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s = audio.NewInfiniteLoop(stream, stream.Length())
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} else {
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s = stream
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}
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player, err := context.NewPlayer(s)
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if err != nil {
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panic(err)
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}
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// Workaround to prevent delays when playing for the first time.
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player.SetVolume(0)
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player.Play()
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player.Pause()
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player.Rewind()
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player.SetVolume(1)
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return player
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}
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func FrameAt(img *ebiten.Image, x int, y int) *ebiten.Image {
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xPos, yPos := x*tileSize, y*tileSize
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return img.SubImage(image.Rect(xPos, yPos, xPos+tileSize, yPos+tileSize)).(*ebiten.Image)
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}
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