mth/ebiten
1
0
Fork 0
mirror of https://github.com/hajimehoshi/ebiten.git synced 2025-01-12 20:18:59 +01:00
Code Issues Packages Projects Releases Wiki Activity

docs: Update

Browse Source
This commit is contained in:
Hajime Hoshi 2018-02-04 23:52:19 +09:00
parent 1f1de9763f
commit 8aa72d9576
2 changed files with 9 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
docs/examples/audio.html
View File

@ -46,6 +46,7 @@ import (
"github.com/hajimehoshi/ebiten/audio/mp3"
"github.com/hajimehoshi/ebiten/audio/wav"
"github.com/hajimehoshi/ebiten/ebitenutil"
"github.com/hajimehoshi/ebiten/inpututil"
)
const (
@ -62,46 +63,8 @@ var (
playerCurrentColor = color.RGBA{0xff, 0xff, 0xff, 0xff}
)
// Input manages the current input state to detect keys 'just pressed'.
//
// Note: 'just pressed' is a very common idiom.
// There is a plan to create a new package for input utility.
// See https://github.com/hajimehoshi/ebiten/issues/415.
type Input struct {
mouseButtonStates map[ebiten.MouseButton]int
keyStates map[ebiten.Key]int
}
func (i *Input) update() {
for _, key := range []ebiten.Key{ebiten.KeyP, ebiten.KeyS, ebiten.KeyX, ebiten.KeyZ, ebiten.KeyB} {
if !ebiten.IsKeyPressed(key) {
i.keyStates[key] = 0
} else {
i.keyStates[key]++
}
}
if !ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) {
i.mouseButtonStates[ebiten.MouseButtonLeft] = 0
} else {
i.mouseButtonStates[ebiten.MouseButtonLeft]++
}
}
func (i *Input) isKeyJustPressed(key ebiten.Key) bool {
return i.keyStates[key] == 1
}
func (i *Input) isKeyPressed(key ebiten.Key) bool {
return i.keyStates[key] > 0
}
func (i *Input) isMouseButtonJustPressed(mouseButton ebiten.MouseButton) bool {
return i.mouseButtonStates[mouseButton] == 1
}
// Player represents the current audio state.
type Player struct {
input *Input
audioContext *audio.Context
audioPlayer *audio.Player
current time.Duration
@ -137,10 +100,6 @@ func NewPlayer(audioContext *audio.Context) (*Player, error) {
return nil, err
}
player := &Player{
input: &Input{
mouseButtonStates: map[ebiten.MouseButton]int{},
keyStates: map[ebiten.Key]int{},
},
audioContext: audioContext,
audioPlayer: p,
total: time.Second * time.Duration(s.Length()) / bytesPerSample / sampleRate,
@ -168,7 +127,6 @@ func NewPlayer(audioContext *audio.Context) (*Player, error) {
}
func (p *Player) update() error {
p.input.update()
select {
case p.seBytes = <-p.seCh:
close(p.seCh)
@ -184,7 +142,7 @@ func (p *Player) update() error {
p.playSEIfNeeded()
p.updateVolumeIfNeeded()
if p.input.isKeyJustPressed(ebiten.KeyB) {
if inpututil.IsKeyJustPressed(ebiten.KeyB) {
b := ebiten.IsRunnableInBackground()
ebiten.SetRunnableInBackground(!b)
}
@ -197,7 +155,7 @@ func (p *Player) playSEIfNeeded() {
return
}
if !p.input.isKeyJustPressed(ebiten.KeyP) {
if !inpututil.IsKeyJustPressed(ebiten.KeyP) {
return
}
sePlayer, _ := audio.NewPlayerFromBytes(p.audioContext, p.seBytes)
@ -205,10 +163,10 @@ func (p *Player) playSEIfNeeded() {
}
func (p *Player) updateVolumeIfNeeded() {
if p.input.isKeyPressed(ebiten.KeyZ) {
if ebiten.IsKeyPressed(ebiten.KeyZ) {
p.volume128--
}
if p.input.isKeyPressed(ebiten.KeyX) {
if ebiten.IsKeyPressed(ebiten.KeyX) {
p.volume128++
}
if p.volume128 < 0 {
@ -221,7 +179,7 @@ func (p *Player) updateVolumeIfNeeded() {
}
func (p *Player) switchPlayStateIfNeeded() {
if !p.input.isKeyJustPressed(ebiten.KeyS) {
if !inpututil.IsKeyJustPressed(ebiten.KeyS) {
return
}
if p.audioPlayer.IsPlaying() {
@ -232,7 +190,7 @@ func (p *Player) switchPlayStateIfNeeded() {
}
func (p *Player) seekBarIfNeeded() {
if !p.input.isMouseButtonJustPressed(ebiten.MouseButtonLeft) {
if !inpututil.IsMouseButtonJustPressed(ebiten.MouseButtonLeft) {
return
}

16
docs/examples/piano.html
View File

@ -44,6 +44,7 @@ import (
"github.com/hajimehoshi/ebiten"
"github.com/hajimehoshi/ebiten/audio"
"github.com/hajimehoshi/ebiten/ebitenutil"
"github.com/hajimehoshi/ebiten/inpututil"
"github.com/hajimehoshi/ebiten/text"
)
@ -224,20 +225,8 @@ var (
ebiten.KeyO,
ebiten.KeyL,
}
keyStates = map[ebiten.Key]int{}
)
// updateInput updates the input state.
func updateInput() {
for _, key := range keys {
if !ebiten.IsKeyPressed(key) {
keyStates[key] = 0
continue
}
keyStates[key]++
}
}
func update(screen *ebiten.Image) error {
// The piano data is still being initialized.
// Get the progress if available.
@ -250,9 +239,8 @@ func update(screen *ebiten.Image) error {
}
if pianoNoteSamplesInited {
updateInput()
for i, key := range keys {
if keyStates[key] != 1 {
if !inpututil.IsKeyJustPressed(key) {
continue
}
playNote(baseFreq * math.Exp2(float64(i-1)/12.0))