mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 04:57:26 +01:00
doc: Change indent size 4 -> 8
This commit is contained in:
Hajime Hoshi
parent
69dafff704
commit
12920a79da
@ -185,7 +185,7 @@ func (e *example) Source() string {
|
||||
panic(err)
|
||||
}
|
||||
str := regexp.MustCompile("(?s)^.*?\n\n").ReplaceAllString(string(b), "")
|
||||
str = strings.Replace(str, "\t", " ", -1)
|
||||
str = strings.Replace(str, "\t", " ", -1)
|
||||
return str
|
||||
}
|
||||
|
||||
|
||||
@ -70,17 +70,17 @@ the <code>main.go</code> file:</p>
|
||||
<pre><code>package main
|
||||
|
||||
import (
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
ebitenutil.DebugPrint(screen, "Hello world!")
|
||||
return nil
|
||||
ebitenutil.DebugPrint(screen, "Hello world!")
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
ebiten.Run(update, 320, 240, 2, "Hello world!")
|
||||
ebiten.Run(update, 320, 240, 2, "Hello world!")
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,78 +27,78 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"image/color"
|
||||
_ "image/png"
|
||||
"log"
|
||||
"image/color"
|
||||
_ "image/png"
|
||||
"log"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
count int
|
||||
ebitenImage *ebiten.Image
|
||||
count int
|
||||
ebitenImage *ebiten.Image
|
||||
)
|
||||
|
||||
type imageParts struct {
|
||||
diff float64
|
||||
diff float64
|
||||
}
|
||||
|
||||
func (p *imageParts) Src(i int) (int, int, int, int) {
|
||||
w, h := ebitenImage.Size()
|
||||
return 0, 0, w, h
|
||||
w, h := ebitenImage.Size()
|
||||
return 0, 0, w, h
|
||||
}
|
||||
|
||||
func (p *imageParts) Dst(i int) (int, int, int, int) {
|
||||
x := int(float64(i%10)*p.diff + 15)
|
||||
y := int(float64(i/10)*p.diff + 20)
|
||||
w, h := ebitenImage.Size()
|
||||
return x, y, x + w, y + h
|
||||
x := int(float64(i%10)*p.diff + 15)
|
||||
y := int(float64(i/10)*p.diff + 20)
|
||||
w, h := ebitenImage.Size()
|
||||
return x, y, x + w, y + h
|
||||
}
|
||||
|
||||
func (p *imageParts) Len() int {
|
||||
return 10 * 10
|
||||
return 10 * 10
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
count++
|
||||
count %= ebiten.FPS * 10
|
||||
diff := float64(count) * 0.2
|
||||
switch {
|
||||
case 480 < count:
|
||||
diff = 0
|
||||
case 240 < count:
|
||||
diff = float64(480-count) * 0.2
|
||||
}
|
||||
count++
|
||||
count %= ebiten.FPS * 10
|
||||
diff := float64(count) * 0.2
|
||||
switch {
|
||||
case 480 < count:
|
||||
diff = 0
|
||||
case 240 < count:
|
||||
diff = float64(480-count) * 0.2
|
||||
}
|
||||
|
||||
if err := screen.Fill(color.NRGBA{0x00, 0x00, 0x80, 0xff}); err != nil {
|
||||
return err
|
||||
}
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.ColorM.Scale(1.0, 1.0, 1.0, 0.5)
|
||||
op.ImageParts = &imageParts{
|
||||
diff: diff,
|
||||
}
|
||||
if err := screen.DrawImage(ebitenImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
if err := screen.Fill(color.NRGBA{0x00, 0x00, 0x80, 0xff}); err != nil {
|
||||
return err
|
||||
}
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.ColorM.Scale(1.0, 1.0, 1.0, 0.5)
|
||||
op.ImageParts = &imageParts{
|
||||
diff: diff,
|
||||
}
|
||||
if err := screen.DrawImage(ebitenImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
ebitenImage, _, err = ebitenutil.NewImageFromFile("_resources/images/ebiten.png", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Alpha Blending (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
ebitenImage, _, err = ebitenutil.NewImageFromFile("_resources/images/ebiten.png", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Alpha Blending (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,287 +27,287 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"image/color"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"time"
|
||||
"fmt"
|
||||
"image/color"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"time"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/audio"
|
||||
"github.com/hajimehoshi/ebiten/audio/vorbis"
|
||||
"github.com/hajimehoshi/ebiten/audio/wav"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/audio"
|
||||
"github.com/hajimehoshi/ebiten/audio/vorbis"
|
||||
"github.com/hajimehoshi/ebiten/audio/wav"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
playerBarImage *ebiten.Image
|
||||
playerCurrentImage *ebiten.Image
|
||||
playerBarImage *ebiten.Image
|
||||
playerCurrentImage *ebiten.Image
|
||||
)
|
||||
|
||||
func init() {
|
||||
var err error
|
||||
playerBarImage, err = ebiten.NewImage(300, 4, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := playerBarImage.Fill(&color.RGBA{0x80, 0x80, 0x80, 0xff}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
playerBarImage, err = ebiten.NewImage(300, 4, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := playerBarImage.Fill(&color.RGBA{0x80, 0x80, 0x80, 0xff}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
playerCurrentImage, err = ebiten.NewImage(4, 10, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := playerCurrentImage.Fill(&color.RGBA{0xff, 0xff, 0xff, 0xff}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
playerCurrentImage, err = ebiten.NewImage(4, 10, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := playerCurrentImage.Fill(&color.RGBA{0xff, 0xff, 0xff, 0xff}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
type Player struct {
|
||||
audioPlayer *audio.Player
|
||||
total time.Duration
|
||||
audioPlayer *audio.Player
|
||||
total time.Duration
|
||||
}
|
||||
|
||||
var (
|
||||
audioContext *audio.Context
|
||||
musicPlayer *Player
|
||||
seBytes []byte
|
||||
musicCh = make(chan *Player)
|
||||
seCh = make(chan []byte)
|
||||
mouseButtonState = map[ebiten.MouseButton]int{}
|
||||
keyState = map[ebiten.Key]int{}
|
||||
volume128 = 128
|
||||
audioContext *audio.Context
|
||||
musicPlayer *Player
|
||||
seBytes []byte
|
||||
musicCh = make(chan *Player)
|
||||
seCh = make(chan []byte)
|
||||
mouseButtonState = map[ebiten.MouseButton]int{}
|
||||
keyState = map[ebiten.Key]int{}
|
||||
volume128 = 128
|
||||
)
|
||||
|
||||
func playerBarRect() (x, y, w, h int) {
|
||||
w, h = playerBarImage.Size()
|
||||
x = (screenWidth - w) / 2
|
||||
y = screenHeight - h - 16
|
||||
return
|
||||
w, h = playerBarImage.Size()
|
||||
x = (screenWidth - w) / 2
|
||||
y = screenHeight - h - 16
|
||||
return
|
||||
}
|
||||
|
||||
func (p *Player) updateSE() error {
|
||||
if seBytes == nil {
|
||||
return nil
|
||||
}
|
||||
if !ebiten.IsKeyPressed(ebiten.KeyP) {
|
||||
keyState[ebiten.KeyP] = 0
|
||||
return nil
|
||||
}
|
||||
keyState[ebiten.KeyP]++
|
||||
if keyState[ebiten.KeyP] != 1 {
|
||||
return nil
|
||||
}
|
||||
sePlayer, err := audio.NewPlayerFromBytes(audioContext, seBytes)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return sePlayer.Play()
|
||||
if seBytes == nil {
|
||||
return nil
|
||||
}
|
||||
if !ebiten.IsKeyPressed(ebiten.KeyP) {
|
||||
keyState[ebiten.KeyP] = 0
|
||||
return nil
|
||||
}
|
||||
keyState[ebiten.KeyP]++
|
||||
if keyState[ebiten.KeyP] != 1 {
|
||||
return nil
|
||||
}
|
||||
sePlayer, err := audio.NewPlayerFromBytes(audioContext, seBytes)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return sePlayer.Play()
|
||||
}
|
||||
|
||||
func (p *Player) updateVolume() error {
|
||||
if p.audioPlayer == nil {
|
||||
if p.audioPlayer == nil {
|
||||
return nil
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyZ) {
|
||||
volume128--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyX) {
|
||||
volume128++
|
||||
}
|
||||
if volume128 < 0 {
|
||||
volume128 = 0
|
||||
}
|
||||
if 128 < volume128 {
|
||||
volume128 = 128
|
||||
}
|
||||
p.audioPlayer.SetVolume(float64(volume128) / 128)
|
||||
return nil
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyZ) {
|
||||
volume128--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyX) {
|
||||
volume128++
|
||||
}
|
||||
if volume128 < 0 {
|
||||
volume128 = 0
|
||||
}
|
||||
if 128 < volume128 {
|
||||
volume128 = 128
|
||||
}
|
||||
p.audioPlayer.SetVolume(float64(volume128) / 128)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *Player) updatePlayPause() error {
|
||||
if p.audioPlayer == nil {
|
||||
return nil
|
||||
}
|
||||
if !ebiten.IsKeyPressed(ebiten.KeyS) {
|
||||
keyState[ebiten.KeyS] = 0
|
||||
return nil
|
||||
}
|
||||
keyState[ebiten.KeyS]++
|
||||
if keyState[ebiten.KeyS] != 1 {
|
||||
return nil
|
||||
}
|
||||
if p.audioPlayer.IsPlaying() {
|
||||
return p.audioPlayer.Pause()
|
||||
}
|
||||
return p.audioPlayer.Play()
|
||||
if p.audioPlayer == nil {
|
||||
return nil
|
||||
}
|
||||
if !ebiten.IsKeyPressed(ebiten.KeyS) {
|
||||
keyState[ebiten.KeyS] = 0
|
||||
return nil
|
||||
}
|
||||
keyState[ebiten.KeyS]++
|
||||
if keyState[ebiten.KeyS] != 1 {
|
||||
return nil
|
||||
}
|
||||
if p.audioPlayer.IsPlaying() {
|
||||
return p.audioPlayer.Pause()
|
||||
}
|
||||
return p.audioPlayer.Play()
|
||||
}
|
||||
|
||||
func (p *Player) updateBar() error {
|
||||
if p.audioPlayer == nil {
|
||||
return nil
|
||||
}
|
||||
if !ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) {
|
||||
mouseButtonState[ebiten.MouseButtonLeft] = 0
|
||||
return nil
|
||||
}
|
||||
mouseButtonState[ebiten.MouseButtonLeft]++
|
||||
if mouseButtonState[ebiten.MouseButtonLeft] != 1 {
|
||||
return nil
|
||||
}
|
||||
x, y := ebiten.CursorPosition()
|
||||
bx, by, bw, bh := playerBarRect()
|
||||
const padding = 4
|
||||
if y < by-padding || by+bh+padding <= y {
|
||||
return nil
|
||||
}
|
||||
if x < bx || bx+bw <= x {
|
||||
return nil
|
||||
}
|
||||
pos := time.Duration(x-bx) * p.total / time.Duration(bw)
|
||||
return p.audioPlayer.Seek(pos)
|
||||
if p.audioPlayer == nil {
|
||||
return nil
|
||||
}
|
||||
if !ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) {
|
||||
mouseButtonState[ebiten.MouseButtonLeft] = 0
|
||||
return nil
|
||||
}
|
||||
mouseButtonState[ebiten.MouseButtonLeft]++
|
||||
if mouseButtonState[ebiten.MouseButtonLeft] != 1 {
|
||||
return nil
|
||||
}
|
||||
x, y := ebiten.CursorPosition()
|
||||
bx, by, bw, bh := playerBarRect()
|
||||
const padding = 4
|
||||
if y < by-padding || by+bh+padding <= y {
|
||||
return nil
|
||||
}
|
||||
if x < bx || bx+bw <= x {
|
||||
return nil
|
||||
}
|
||||
pos := time.Duration(x-bx) * p.total / time.Duration(bw)
|
||||
return p.audioPlayer.Seek(pos)
|
||||
}
|
||||
|
||||
func (p *Player) close() error {
|
||||
return p.audioPlayer.Close()
|
||||
return p.audioPlayer.Close()
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
if musicPlayer == nil {
|
||||
select {
|
||||
case musicPlayer = <-musicCh:
|
||||
default:
|
||||
if musicPlayer == nil {
|
||||
select {
|
||||
case musicPlayer = <-musicCh:
|
||||
default:
|
||||
}
|
||||
}
|
||||
}
|
||||
if seBytes == nil {
|
||||
select {
|
||||
case seBytes = <-seCh:
|
||||
default:
|
||||
if seBytes == nil {
|
||||
select {
|
||||
case seBytes = <-seCh:
|
||||
default:
|
||||
}
|
||||
}
|
||||
}
|
||||
if musicPlayer != nil {
|
||||
if err := musicPlayer.updateBar(); err != nil {
|
||||
return err
|
||||
if musicPlayer != nil {
|
||||
if err := musicPlayer.updateBar(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := musicPlayer.updatePlayPause(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := musicPlayer.updateSE(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := musicPlayer.updateVolume(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if err := musicPlayer.updatePlayPause(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := musicPlayer.updateSE(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := musicPlayer.updateVolume(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
x, y, w, h := playerBarRect()
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
if err := screen.DrawImage(playerBarImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
currentTimeStr := "00:00"
|
||||
if musicPlayer != nil {
|
||||
c := musicPlayer.audioPlayer.Current()
|
||||
|
||||
// Current Time
|
||||
m := (c / time.Minute) % 100
|
||||
s := (c / time.Second) % 60
|
||||
currentTimeStr = fmt.Sprintf("%02d:%02d", m, s)
|
||||
|
||||
// Bar
|
||||
cw, ch := playerCurrentImage.Size()
|
||||
cx := int(time.Duration(w)*c/musicPlayer.total) + x - cw/2
|
||||
cy := y - (ch-h)/2
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(cx), float64(cy))
|
||||
if err := screen.DrawImage(playerCurrentImage, op); err != nil {
|
||||
return err
|
||||
x, y, w, h := playerBarRect()
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
if err := screen.DrawImage(playerBarImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
currentTimeStr := "00:00"
|
||||
if musicPlayer != nil {
|
||||
c := musicPlayer.audioPlayer.Current()
|
||||
|
||||
msg := fmt.Sprintf(`FPS: %0.2f
|
||||
// Current Time
|
||||
m := (c / time.Minute) % 100
|
||||
s := (c / time.Second) % 60
|
||||
currentTimeStr = fmt.Sprintf("%02d:%02d", m, s)
|
||||
|
||||
// Bar
|
||||
cw, ch := playerCurrentImage.Size()
|
||||
cx := int(time.Duration(w)*c/musicPlayer.total) + x - cw/2
|
||||
cy := y - (ch-h)/2
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(cx), float64(cy))
|
||||
if err := screen.DrawImage(playerCurrentImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
msg := fmt.Sprintf(`FPS: %0.2f
|
||||
Press S to toggle Play/Pause
|
||||
Press P to play SE
|
||||
Press Z or X to change volume of the music
|
||||
%s`, ebiten.CurrentFPS(), currentTimeStr)
|
||||
if musicPlayer == nil {
|
||||
msg += "\nNow Loading..."
|
||||
}
|
||||
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := audioContext.Update(); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
if musicPlayer == nil {
|
||||
msg += "\nNow Loading..."
|
||||
}
|
||||
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := audioContext.Update(); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
wavF, err := ebitenutil.OpenFile("_resources/audio/jab.wav")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
oggF, err := ebitenutil.OpenFile("_resources/audio/ragtime.ogg")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
const sampleRate = 22050
|
||||
const bytesPerSample = 4 // TODO: This should be defined in audio package
|
||||
audioContext, err = audio.NewContext(sampleRate)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
go func() {
|
||||
s, err := wav.Decode(audioContext, wavF)
|
||||
wavF, err := ebitenutil.OpenFile("_resources/audio/jab.wav")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
log.Fatal(err)
|
||||
}
|
||||
b, err := ioutil.ReadAll(s)
|
||||
oggF, err := ebitenutil.OpenFile("_resources/audio/ragtime.ogg")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
log.Fatal(err)
|
||||
}
|
||||
seCh <- b
|
||||
close(seCh)
|
||||
}()
|
||||
go func() {
|
||||
s, err := vorbis.Decode(audioContext, oggF)
|
||||
const sampleRate = 22050
|
||||
const bytesPerSample = 4 // TODO: This should be defined in audio package
|
||||
audioContext, err = audio.NewContext(sampleRate)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
log.Fatal(err)
|
||||
}
|
||||
p, err := audio.NewPlayer(audioContext, s)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
go func() {
|
||||
s, err := wav.Decode(audioContext, wavF)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
}
|
||||
b, err := ioutil.ReadAll(s)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
}
|
||||
seCh <- b
|
||||
close(seCh)
|
||||
}()
|
||||
go func() {
|
||||
s, err := vorbis.Decode(audioContext, oggF)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
}
|
||||
p, err := audio.NewPlayer(audioContext, s)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
}
|
||||
musicCh <- &Player{
|
||||
audioPlayer: p,
|
||||
total: time.Second * time.Duration(s.Size()) / bytesPerSample / sampleRate,
|
||||
}
|
||||
close(musicCh)
|
||||
// TODO: Is this goroutine-safe?
|
||||
if err := p.Play(); err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
}
|
||||
}()
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Audio (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
musicCh <- &Player{
|
||||
audioPlayer: p,
|
||||
total: time.Second * time.Duration(s.Size()) / bytesPerSample / sampleRate,
|
||||
if musicPlayer != nil {
|
||||
if err := musicPlayer.close(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
close(musicCh)
|
||||
// TODO: Is this goroutine-safe?
|
||||
if err := p.Play(); err != nil {
|
||||
log.Fatal(err)
|
||||
return
|
||||
}
|
||||
}()
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Audio (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if musicPlayer != nil {
|
||||
if err := musicPlayer.close(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,95 +27,95 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"image"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"image"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
|
||||
"github.com/golang/freetype/truetype"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"golang.org/x/image/font"
|
||||
"golang.org/x/image/math/fixed"
|
||||
"github.com/golang/freetype/truetype"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"golang.org/x/image/font"
|
||||
"golang.org/x/image/math/fixed"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 640
|
||||
screenHeight = 480
|
||||
screenWidth = 640
|
||||
screenHeight = 480
|
||||
)
|
||||
|
||||
var (
|
||||
textImage *ebiten.Image
|
||||
textImage *ebiten.Image
|
||||
)
|
||||
|
||||
var text = []string{
|
||||
"The quick brown fox jumps over the lazy dog.",
|
||||
"",
|
||||
// A head part of a Japanese novel 山月記 (Sangetsuki)
|
||||
// See http://www.aozora.gr.jp/cards/000119/files/624_14544.html.
|
||||
"隴西の李徴は博学才穎、天宝の末年、",
|
||||
"若くして名を虎榜に連ね、",
|
||||
"ついで江南尉に補せられたが、",
|
||||
"性、狷介、自ら恃むところ頗厚く、",
|
||||
"賤吏に甘んずるを潔しとしなかった。",
|
||||
"The quick brown fox jumps over the lazy dog.",
|
||||
"",
|
||||
// A head part of a Japanese novel 山月記 (Sangetsuki)
|
||||
// See http://www.aozora.gr.jp/cards/000119/files/624_14544.html.
|
||||
"隴西の李徴は博学才穎、天宝の末年、",
|
||||
"若くして名を虎榜に連ね、",
|
||||
"ついで江南尉に補せられたが、",
|
||||
"性、狷介、自ら恃むところ頗厚く、",
|
||||
"賤吏に甘んずるを潔しとしなかった。",
|
||||
}
|
||||
|
||||
func parseFont() error {
|
||||
f, err := ebitenutil.OpenFile("_resources/fonts/mplus-1p-regular.ttf")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer func() {
|
||||
_ = f.Close()
|
||||
}()
|
||||
b, err := ioutil.ReadAll(f)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
tt, err := truetype.Parse(b)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
w, h := textImage.Size()
|
||||
dst := image.NewRGBA(image.Rect(0, 0, w, h))
|
||||
const size = 24
|
||||
const dpi = 72
|
||||
d := &font.Drawer{
|
||||
Dst: dst,
|
||||
Src: image.White,
|
||||
Face: truetype.NewFace(tt, &truetype.Options{
|
||||
Size: size,
|
||||
DPI: dpi,
|
||||
Hinting: font.HintingFull,
|
||||
}),
|
||||
}
|
||||
y := size
|
||||
for _, s := range text {
|
||||
d.Dot = fixed.P(0, y)
|
||||
d.DrawString(s)
|
||||
y += size
|
||||
}
|
||||
return textImage.ReplacePixels(dst.Pix)
|
||||
f, err := ebitenutil.OpenFile("_resources/fonts/mplus-1p-regular.ttf")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer func() {
|
||||
_ = f.Close()
|
||||
}()
|
||||
b, err := ioutil.ReadAll(f)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
tt, err := truetype.Parse(b)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
w, h := textImage.Size()
|
||||
dst := image.NewRGBA(image.Rect(0, 0, w, h))
|
||||
const size = 24
|
||||
const dpi = 72
|
||||
d := &font.Drawer{
|
||||
Dst: dst,
|
||||
Src: image.White,
|
||||
Face: truetype.NewFace(tt, &truetype.Options{
|
||||
Size: size,
|
||||
DPI: dpi,
|
||||
Hinting: font.HintingFull,
|
||||
}),
|
||||
}
|
||||
y := size
|
||||
for _, s := range text {
|
||||
d.Dot = fixed.P(0, y)
|
||||
d.DrawString(s)
|
||||
y += size
|
||||
}
|
||||
return textImage.ReplacePixels(dst.Pix)
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
if err := screen.DrawImage(textImage, &ebiten.DrawImageOptions{}); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
if err := screen.DrawImage(textImage, &ebiten.DrawImageOptions{}); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
textImage, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := parseFont(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 1, "Font (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
textImage, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := parseFont(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 1, "Font (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,55 +27,55 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
"strconv"
|
||||
"strings"
|
||||
"fmt"
|
||||
"log"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
// TODO: API to get the available, lowest ID
|
||||
const gamepadID = 0
|
||||
axes := []string{}
|
||||
pressedButtons := []string{}
|
||||
// TODO: API to get the available, lowest ID
|
||||
const gamepadID = 0
|
||||
axes := []string{}
|
||||
pressedButtons := []string{}
|
||||
|
||||
maxAxis := ebiten.GamepadAxisNum(gamepadID)
|
||||
for a := 0; a < maxAxis; a++ {
|
||||
v := ebiten.GamepadAxis(gamepadID, a)
|
||||
axes = append(axes, fmt.Sprintf("%d: %0.6f", a, v))
|
||||
}
|
||||
|
||||
maxButton := ebiten.GamepadButton(ebiten.GamepadButtonNum(gamepadID))
|
||||
for b := ebiten.GamepadButton(gamepadID); b < maxButton; b++ {
|
||||
if ebiten.IsGamepadButtonPressed(gamepadID, b) {
|
||||
pressedButtons = append(pressedButtons, strconv.Itoa(int(b)))
|
||||
maxAxis := ebiten.GamepadAxisNum(gamepadID)
|
||||
for a := 0; a < maxAxis; a++ {
|
||||
v := ebiten.GamepadAxis(gamepadID, a)
|
||||
axes = append(axes, fmt.Sprintf("%d: %0.6f", a, v))
|
||||
}
|
||||
}
|
||||
|
||||
str := `Gamepad
|
||||
maxButton := ebiten.GamepadButton(ebiten.GamepadButtonNum(gamepadID))
|
||||
for b := ebiten.GamepadButton(gamepadID); b < maxButton; b++ {
|
||||
if ebiten.IsGamepadButtonPressed(gamepadID, b) {
|
||||
pressedButtons = append(pressedButtons, strconv.Itoa(int(b)))
|
||||
}
|
||||
}
|
||||
|
||||
str := `Gamepad
|
||||
Axes:
|
||||
{{.Axes}}
|
||||
Pressed Buttons: {{.Buttons}}`
|
||||
str = strings.Replace(str, "{{.Axes}}", strings.Join(axes, "\n "), -1)
|
||||
str = strings.Replace(str, "{{.Buttons}}", strings.Join(pressedButtons, ", "), -1)
|
||||
if err := ebitenutil.DebugPrint(screen, str); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
str = strings.Replace(str, "{{.Axes}}", strings.Join(axes, "\n "), -1)
|
||||
str = strings.Replace(str, "{{.Buttons}}", strings.Join(pressedButtons, ", "), -1)
|
||||
if err := ebitenutil.DebugPrint(screen, str); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Gamepad (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Gamepad (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,92 +27,92 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
"fmt"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
hueInt = 0
|
||||
saturationInt = 128
|
||||
valueInt = 128
|
||||
gophersImage *ebiten.Image
|
||||
hueInt = 0
|
||||
saturationInt = 128
|
||||
valueInt = 128
|
||||
gophersImage *ebiten.Image
|
||||
)
|
||||
|
||||
func clamp(v, min, max int) int {
|
||||
if min > max {
|
||||
panic("min must <= max")
|
||||
}
|
||||
if v < min {
|
||||
return min
|
||||
}
|
||||
if max < v {
|
||||
return max
|
||||
}
|
||||
return v
|
||||
if min > max {
|
||||
panic("min must <= max")
|
||||
}
|
||||
if v < min {
|
||||
return min
|
||||
}
|
||||
if max < v {
|
||||
return max
|
||||
}
|
||||
return v
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
if ebiten.IsKeyPressed(ebiten.KeyQ) {
|
||||
hueInt--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyW) {
|
||||
hueInt++
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyA) {
|
||||
saturationInt--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyS) {
|
||||
saturationInt++
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyZ) {
|
||||
valueInt--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyX) {
|
||||
valueInt++
|
||||
}
|
||||
hueInt = clamp(hueInt, -256, 256)
|
||||
saturationInt = clamp(saturationInt, 0, 256)
|
||||
valueInt = clamp(valueInt, 0, 256)
|
||||
if ebiten.IsKeyPressed(ebiten.KeyQ) {
|
||||
hueInt--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyW) {
|
||||
hueInt++
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyA) {
|
||||
saturationInt--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyS) {
|
||||
saturationInt++
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyZ) {
|
||||
valueInt--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyX) {
|
||||
valueInt++
|
||||
}
|
||||
hueInt = clamp(hueInt, -256, 256)
|
||||
saturationInt = clamp(saturationInt, 0, 256)
|
||||
valueInt = clamp(valueInt, 0, 256)
|
||||
|
||||
w, h := gophersImage.Size()
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(screenWidth-w)/2, float64(screenHeight-h)/2)
|
||||
hue := float64(hueInt) * 2 * math.Pi / 128
|
||||
saturation := float64(saturationInt) / 128
|
||||
value := float64(valueInt) / 128
|
||||
op.ColorM.ChangeHSV(hue, saturation, value)
|
||||
if err := screen.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
w, h := gophersImage.Size()
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(screenWidth-w)/2, float64(screenHeight-h)/2)
|
||||
hue := float64(hueInt) * 2 * math.Pi / 128
|
||||
saturation := float64(saturationInt) / 128
|
||||
value := float64(valueInt) / 128
|
||||
op.ColorM.ChangeHSV(hue, saturation, value)
|
||||
if err := screen.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
msg := fmt.Sprintf(`Hue: %0.2f [Q][W]
|
||||
msg := fmt.Sprintf(`Hue: %0.2f [Q][W]
|
||||
Saturation: %0.2f [A][S]
|
||||
Value: %0.2f [Z][X]`, hue, saturation, value)
|
||||
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "HSV (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "HSV (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,45 +27,45 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
count int
|
||||
gophersImage *ebiten.Image
|
||||
count int
|
||||
gophersImage *ebiten.Image
|
||||
)
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
count++
|
||||
w, h := gophersImage.Size()
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(screenWidth-w)/2, float64(screenHeight-h)/2)
|
||||
op.ColorM.RotateHue(float64(count%360) * 2 * math.Pi / 360)
|
||||
if err := screen.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
count++
|
||||
w, h := gophersImage.Size()
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(screenWidth-w)/2, float64(screenHeight-h)/2)
|
||||
op.ColorM.RotateHue(float64(count%360) * 2 * math.Pi / 360)
|
||||
if err := screen.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Hue (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Hue (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,116 +27,116 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
"strconv"
|
||||
"log"
|
||||
"strconv"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten/examples/keyboard/keyboard"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten/examples/keyboard/keyboard"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var keyboardImage *ebiten.Image
|
||||
|
||||
func init() {
|
||||
var err error
|
||||
keyboardImage, _, err = ebitenutil.NewImageFromFile("_resources/images/keyboard/keyboard.png", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
keyboardImage, _, err = ebitenutil.NewImageFromFile("_resources/images/keyboard/keyboard.png", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
var keyNames = map[ebiten.Key]string{
|
||||
ebiten.KeyBackspace: "BS",
|
||||
ebiten.KeyComma: ",",
|
||||
ebiten.KeyDelete: "Del",
|
||||
ebiten.KeyEnter: "Enter",
|
||||
ebiten.KeyEscape: "Esc",
|
||||
ebiten.KeyPeriod: ".",
|
||||
ebiten.KeySpace: "Space",
|
||||
ebiten.KeyTab: "Tab",
|
||||
ebiten.KeyBackspace: "BS",
|
||||
ebiten.KeyComma: ",",
|
||||
ebiten.KeyDelete: "Del",
|
||||
ebiten.KeyEnter: "Enter",
|
||||
ebiten.KeyEscape: "Esc",
|
||||
ebiten.KeyPeriod: ".",
|
||||
ebiten.KeySpace: "Space",
|
||||
ebiten.KeyTab: "Tab",
|
||||
|
||||
// Arrows
|
||||
ebiten.KeyDown: "Down",
|
||||
ebiten.KeyLeft: "Left",
|
||||
ebiten.KeyRight: "Right",
|
||||
ebiten.KeyUp: "Up",
|
||||
// Arrows
|
||||
ebiten.KeyDown: "Down",
|
||||
ebiten.KeyLeft: "Left",
|
||||
ebiten.KeyRight: "Right",
|
||||
ebiten.KeyUp: "Up",
|
||||
|
||||
// Mods
|
||||
ebiten.KeyShift: "Shift",
|
||||
ebiten.KeyControl: "Ctrl",
|
||||
ebiten.KeyAlt: "Alt",
|
||||
// Mods
|
||||
ebiten.KeyShift: "Shift",
|
||||
ebiten.KeyControl: "Ctrl",
|
||||
ebiten.KeyAlt: "Alt",
|
||||
}
|
||||
|
||||
type pressedKeysParts []string
|
||||
|
||||
func (p pressedKeysParts) Len() int {
|
||||
return len(p)
|
||||
return len(p)
|
||||
}
|
||||
|
||||
func (p pressedKeysParts) Dst(i int) (x0, y0, x1, y1 int) {
|
||||
k := p[i]
|
||||
r, ok := keyboard.KeyRect(k)
|
||||
if !ok {
|
||||
return 0, 0, 0, 0
|
||||
}
|
||||
return r.Min.X, r.Min.Y, r.Max.X, r.Max.Y
|
||||
k := p[i]
|
||||
r, ok := keyboard.KeyRect(k)
|
||||
if !ok {
|
||||
return 0, 0, 0, 0
|
||||
}
|
||||
return r.Min.X, r.Min.Y, r.Max.X, r.Max.Y
|
||||
}
|
||||
|
||||
func (p pressedKeysParts) Src(i int) (x0, y0, x1, y1 int) {
|
||||
return p.Dst(i)
|
||||
return p.Dst(i)
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
const offsetX, offsetY = 24, 40
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(offsetX, offsetY)
|
||||
op.ColorM.Scale(0.5, 0.5, 0.5, 1)
|
||||
if err := screen.DrawImage(keyboardImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
const offsetX, offsetY = 24, 40
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(offsetX, offsetY)
|
||||
op.ColorM.Scale(0.5, 0.5, 0.5, 1)
|
||||
if err := screen.DrawImage(keyboardImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
pressed := []string{}
|
||||
for i := 0; i <= 9; i++ {
|
||||
if ebiten.IsKeyPressed(ebiten.Key(i) + ebiten.Key0) {
|
||||
pressed = append(pressed, string(i+'0'))
|
||||
pressed := []string{}
|
||||
for i := 0; i <= 9; i++ {
|
||||
if ebiten.IsKeyPressed(ebiten.Key(i) + ebiten.Key0) {
|
||||
pressed = append(pressed, string(i+'0'))
|
||||
}
|
||||
}
|
||||
}
|
||||
for c := 'A'; c <= 'Z'; c++ {
|
||||
if ebiten.IsKeyPressed(ebiten.Key(c) - 'A' + ebiten.KeyA) {
|
||||
pressed = append(pressed, string(c))
|
||||
for c := 'A'; c <= 'Z'; c++ {
|
||||
if ebiten.IsKeyPressed(ebiten.Key(c) - 'A' + ebiten.KeyA) {
|
||||
pressed = append(pressed, string(c))
|
||||
}
|
||||
}
|
||||
}
|
||||
for i := 1; i <= 12; i++ {
|
||||
if ebiten.IsKeyPressed(ebiten.Key(i) + ebiten.KeyF1 - 1) {
|
||||
pressed = append(pressed, "F"+strconv.Itoa(i))
|
||||
for i := 1; i <= 12; i++ {
|
||||
if ebiten.IsKeyPressed(ebiten.Key(i) + ebiten.KeyF1 - 1) {
|
||||
pressed = append(pressed, "F"+strconv.Itoa(i))
|
||||
}
|
||||
}
|
||||
}
|
||||
for key, name := range keyNames {
|
||||
if ebiten.IsKeyPressed(key) {
|
||||
pressed = append(pressed, name)
|
||||
for key, name := range keyNames {
|
||||
if ebiten.IsKeyPressed(key) {
|
||||
pressed = append(pressed, name)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
op = &ebiten.DrawImageOptions{
|
||||
ImageParts: pressedKeysParts(pressed),
|
||||
}
|
||||
op.GeoM.Translate(offsetX, offsetY)
|
||||
if err := screen.DrawImage(keyboardImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
op = &ebiten.DrawImageOptions{
|
||||
ImageParts: pressedKeysParts(pressed),
|
||||
}
|
||||
op.GeoM.Translate(offsetX, offsetY)
|
||||
if err := screen.DrawImage(keyboardImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Keyboard (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Keyboard (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,129 +27,129 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"image"
|
||||
"image/color"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
"image"
|
||||
"image/color"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
gophersImage *ebiten.Image
|
||||
fiveyearsImage *ebiten.Image
|
||||
maskImage *ebiten.Image
|
||||
spotLightImage *ebiten.Image
|
||||
spotLightX = 0
|
||||
spotLightY = 0
|
||||
spotLightVX = 1
|
||||
spotLightVY = 1
|
||||
gophersImage *ebiten.Image
|
||||
fiveyearsImage *ebiten.Image
|
||||
maskImage *ebiten.Image
|
||||
spotLightImage *ebiten.Image
|
||||
spotLightX = 0
|
||||
spotLightY = 0
|
||||
spotLightVX = 1
|
||||
spotLightVY = 1
|
||||
)
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
spotLightX += spotLightVX
|
||||
spotLightY += spotLightVY
|
||||
if spotLightX < 0 {
|
||||
spotLightX = -spotLightX
|
||||
spotLightVX = -spotLightVX
|
||||
}
|
||||
if spotLightY < 0 {
|
||||
spotLightY = -spotLightY
|
||||
spotLightVY = -spotLightVY
|
||||
}
|
||||
w, h := spotLightImage.Size()
|
||||
maxX, maxY := screenWidth-w, screenHeight-h
|
||||
if maxX < spotLightX {
|
||||
spotLightX = -spotLightX + 2*maxX
|
||||
spotLightVX = -spotLightVX
|
||||
}
|
||||
if maxY < spotLightY {
|
||||
spotLightY = -spotLightY + 2*maxY
|
||||
spotLightVY = -spotLightVY
|
||||
}
|
||||
spotLightX += spotLightVX
|
||||
spotLightY += spotLightVY
|
||||
if spotLightX < 0 {
|
||||
spotLightX = -spotLightX
|
||||
spotLightVX = -spotLightVX
|
||||
}
|
||||
if spotLightY < 0 {
|
||||
spotLightY = -spotLightY
|
||||
spotLightVY = -spotLightVY
|
||||
}
|
||||
w, h := spotLightImage.Size()
|
||||
maxX, maxY := screenWidth-w, screenHeight-h
|
||||
if maxX < spotLightX {
|
||||
spotLightX = -spotLightX + 2*maxX
|
||||
spotLightVX = -spotLightVX
|
||||
}
|
||||
if maxY < spotLightY {
|
||||
spotLightY = -spotLightY + 2*maxY
|
||||
spotLightVY = -spotLightVY
|
||||
}
|
||||
|
||||
if err := maskImage.Clear(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := maskImage.Clear(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(spotLightX), float64(spotLightY))
|
||||
if err := maskImage.DrawImage(spotLightImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(spotLightX), float64(spotLightY))
|
||||
if err := maskImage.DrawImage(spotLightImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
op = &ebiten.DrawImageOptions{}
|
||||
op.CompositeMode = ebiten.CompositeModeSourceOut
|
||||
if err := maskImage.DrawImage(fiveyearsImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
op = &ebiten.DrawImageOptions{}
|
||||
op.CompositeMode = ebiten.CompositeModeSourceOut
|
||||
if err := maskImage.DrawImage(fiveyearsImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := screen.Fill(color.RGBA{0x00, 0x00, 0x80, 0xff}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.DrawImage(gophersImage, &ebiten.DrawImageOptions{}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.DrawImage(maskImage, &ebiten.DrawImageOptions{}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.Fill(color.RGBA{0x00, 0x00, 0x80, 0xff}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.DrawImage(gophersImage, &ebiten.DrawImageOptions{}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.DrawImage(maskImage, &ebiten.DrawImageOptions{}); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
return nil
|
||||
}
|
||||
|
||||
func max(a, b int) int {
|
||||
if a < b {
|
||||
return b
|
||||
}
|
||||
return a
|
||||
if a < b {
|
||||
return b
|
||||
}
|
||||
return a
|
||||
}
|
||||
|
||||
func min(a, b int) int {
|
||||
if a < b {
|
||||
return a
|
||||
}
|
||||
return b
|
||||
if a < b {
|
||||
return a
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
fiveyearsImage, _, err = ebitenutil.NewImageFromFile("_resources/images/fiveyears.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
maskImage, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
as := image.Point{128, 128}
|
||||
a := image.NewAlpha(image.Rectangle{image.ZP, as})
|
||||
for j := 0; j < as.Y; j++ {
|
||||
for i := 0; i < as.X; i++ {
|
||||
r := as.X / 2
|
||||
d := math.Sqrt(float64((i-r)*(i-r) + (j-r)*(j-r)))
|
||||
b := uint8(max(0, min(0xff, 3*0xff-int(d*3*0xff)/r)))
|
||||
a.SetAlpha(i, j, color.Alpha{b})
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
fiveyearsImage, _, err = ebitenutil.NewImageFromFile("_resources/images/fiveyears.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
maskImage, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
as := image.Point{128, 128}
|
||||
a := image.NewAlpha(image.Rectangle{image.ZP, as})
|
||||
for j := 0; j < as.Y; j++ {
|
||||
for i := 0; i < as.X; i++ {
|
||||
r := as.X / 2
|
||||
d := math.Sqrt(float64((i-r)*(i-r) + (j-r)*(j-r)))
|
||||
b := uint8(max(0, min(0xff, 3*0xff-int(d*3*0xff)/r)))
|
||||
a.SetAlpha(i, j, color.Alpha{b})
|
||||
}
|
||||
}
|
||||
spotLightImage, err = ebiten.NewImageFromImage(a, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Masking (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
spotLightImage, err = ebiten.NewImageFromImage(a, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Masking (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,53 +27,53 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
const mosaicRatio = 16
|
||||
|
||||
var (
|
||||
gophersImage *ebiten.Image
|
||||
gophersRenderTarget *ebiten.Image
|
||||
gophersImage *ebiten.Image
|
||||
gophersRenderTarget *ebiten.Image
|
||||
)
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Scale(1.0/mosaicRatio, 1.0/mosaicRatio)
|
||||
if err := gophersRenderTarget.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
op = &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Scale(mosaicRatio, mosaicRatio)
|
||||
if err := screen.DrawImage(gophersRenderTarget, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Scale(1.0/mosaicRatio, 1.0/mosaicRatio)
|
||||
if err := gophersRenderTarget.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
op = &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Scale(mosaicRatio, mosaicRatio)
|
||||
if err := screen.DrawImage(gophersRenderTarget, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
w, h := gophersImage.Size()
|
||||
gophersRenderTarget, err = ebiten.NewImage(w/mosaicRatio, h/mosaicRatio, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Mosaic (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
w, h := gophersImage.Size()
|
||||
gophersRenderTarget, err = ebiten.NewImage(w/mosaicRatio, h/mosaicRatio, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Mosaic (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,61 +27,61 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"image"
|
||||
"log"
|
||||
"fmt"
|
||||
"image"
|
||||
"log"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
noiseImage *image.RGBA
|
||||
noiseImage *image.RGBA
|
||||
)
|
||||
|
||||
type rand struct {
|
||||
x, y, z, w uint32
|
||||
x, y, z, w uint32
|
||||
}
|
||||
|
||||
func (r *rand) next() uint32 {
|
||||
// math/rand is too slow to keep 60 FPS on web browsers.
|
||||
// Use Xorshift instead: http://en.wikipedia.org/wiki/Xorshift
|
||||
t := r.x ^ (r.x << 11)
|
||||
r.x, r.y, r.z = r.y, r.z, r.w
|
||||
r.w = (r.w ^ (r.w >> 19)) ^ (t ^ (t >> 8))
|
||||
return r.w
|
||||
// math/rand is too slow to keep 60 FPS on web browsers.
|
||||
// Use Xorshift instead: http://en.wikipedia.org/wiki/Xorshift
|
||||
t := r.x ^ (r.x << 11)
|
||||
r.x, r.y, r.z = r.y, r.z, r.w
|
||||
r.w = (r.w ^ (r.w >> 19)) ^ (t ^ (t >> 8))
|
||||
return r.w
|
||||
}
|
||||
|
||||
var randInstance = &rand{12345678, 4185243, 776511, 45411}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
const l = screenWidth * screenHeight
|
||||
for i := 0; i < l; i++ {
|
||||
x := randInstance.next()
|
||||
noiseImage.Pix[4*i] = uint8(x >> 24)
|
||||
noiseImage.Pix[4*i+1] = uint8(x >> 16)
|
||||
noiseImage.Pix[4*i+2] = uint8(x >> 8)
|
||||
noiseImage.Pix[4*i+3] = 0xff
|
||||
}
|
||||
if err := screen.ReplacePixels(noiseImage.Pix); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := ebitenutil.DebugPrint(screen, fmt.Sprintf("FPS: %f", ebiten.CurrentFPS())); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
const l = screenWidth * screenHeight
|
||||
for i := 0; i < l; i++ {
|
||||
x := randInstance.next()
|
||||
noiseImage.Pix[4*i] = uint8(x >> 24)
|
||||
noiseImage.Pix[4*i+1] = uint8(x >> 16)
|
||||
noiseImage.Pix[4*i+2] = uint8(x >> 8)
|
||||
noiseImage.Pix[4*i+3] = 0xff
|
||||
}
|
||||
if err := screen.ReplacePixels(noiseImage.Pix); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := ebitenutil.DebugPrint(screen, fmt.Sprintf("FPS: %f", ebiten.CurrentFPS())); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
noiseImage = image.NewRGBA(image.Rect(0, 0, screenWidth, screenHeight))
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Noise (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
noiseImage = image.NewRGBA(image.Rect(0, 0, screenWidth, screenHeight))
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Noise (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,103 +27,103 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"image"
|
||||
"image/color"
|
||||
"log"
|
||||
"math"
|
||||
"fmt"
|
||||
"image"
|
||||
"image/color"
|
||||
"log"
|
||||
"math"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
count int
|
||||
brushImage *ebiten.Image
|
||||
canvasImage *ebiten.Image
|
||||
count int
|
||||
brushImage *ebiten.Image
|
||||
canvasImage *ebiten.Image
|
||||
)
|
||||
|
||||
func paint(screen *ebiten.Image, x, y int) error {
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
op.ColorM.Scale(1.0, 0.50, 0.125, 1.0)
|
||||
theta := 2.0 * math.Pi * float64(count%60) / ebiten.FPS
|
||||
op.ColorM.RotateHue(theta)
|
||||
if err := canvasImage.DrawImage(brushImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
op.ColorM.Scale(1.0, 0.50, 0.125, 1.0)
|
||||
theta := 2.0 * math.Pi * float64(count%60) / ebiten.FPS
|
||||
op.ColorM.RotateHue(theta)
|
||||
if err := canvasImage.DrawImage(brushImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
drawn := false
|
||||
mx, my := ebiten.CursorPosition()
|
||||
if ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) {
|
||||
if err := paint(screen, mx, my); err != nil {
|
||||
return err
|
||||
drawn := false
|
||||
mx, my := ebiten.CursorPosition()
|
||||
if ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) {
|
||||
if err := paint(screen, mx, my); err != nil {
|
||||
return err
|
||||
}
|
||||
drawn = true
|
||||
}
|
||||
drawn = true
|
||||
}
|
||||
for _, t := range ebiten.Touches() {
|
||||
x, y := t.Position()
|
||||
if err := paint(screen, x, y); err != nil {
|
||||
return err
|
||||
for _, t := range ebiten.Touches() {
|
||||
x, y := t.Position()
|
||||
if err := paint(screen, x, y); err != nil {
|
||||
return err
|
||||
}
|
||||
drawn = true
|
||||
}
|
||||
if drawn {
|
||||
count++
|
||||
}
|
||||
drawn = true
|
||||
}
|
||||
if drawn {
|
||||
count++
|
||||
}
|
||||
|
||||
if err := screen.DrawImage(canvasImage, nil); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.DrawImage(canvasImage, nil); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
msg := fmt.Sprintf("(%d, %d)", mx, my)
|
||||
for _, t := range ebiten.Touches() {
|
||||
x, y := t.Position()
|
||||
msg += fmt.Sprintf("\n(%d, %d) touch %d", x, y, t.ID())
|
||||
}
|
||||
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
msg := fmt.Sprintf("(%d, %d)", mx, my)
|
||||
for _, t := range ebiten.Touches() {
|
||||
x, y := t.Position()
|
||||
msg += fmt.Sprintf("\n(%d, %d) touch %d", x, y, t.ID())
|
||||
}
|
||||
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
const a0, a1, a2 = 0x40, 0xc0, 0xff
|
||||
pixels := []uint8{
|
||||
a0, a1, a1, a0,
|
||||
a1, a2, a2, a1,
|
||||
a1, a2, a2, a1,
|
||||
a0, a1, a1, a0,
|
||||
}
|
||||
brushImage, err = ebiten.NewImageFromImage(&image.Alpha{
|
||||
Pix: pixels,
|
||||
Stride: 4,
|
||||
Rect: image.Rect(0, 0, 4, 4),
|
||||
}, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
const a0, a1, a2 = 0x40, 0xc0, 0xff
|
||||
pixels := []uint8{
|
||||
a0, a1, a1, a0,
|
||||
a1, a2, a2, a1,
|
||||
a1, a2, a2, a1,
|
||||
a0, a1, a1, a0,
|
||||
}
|
||||
brushImage, err = ebiten.NewImageFromImage(&image.Alpha{
|
||||
Pix: pixels,
|
||||
Stride: 4,
|
||||
Rect: image.Rect(0, 0, 4, 4),
|
||||
}, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
canvasImage, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := canvasImage.Fill(color.White); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
canvasImage, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := canvasImage.Fill(color.White); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Paint (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Paint (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,66 +27,66 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
gophersImage *ebiten.Image
|
||||
gophersImage *ebiten.Image
|
||||
)
|
||||
|
||||
type parts struct {
|
||||
image *ebiten.Image
|
||||
image *ebiten.Image
|
||||
}
|
||||
|
||||
func (p parts) Len() int {
|
||||
_, h := p.image.Size()
|
||||
return h
|
||||
_, h := p.image.Size()
|
||||
return h
|
||||
}
|
||||
|
||||
func (p parts) Dst(i int) (x0, y0, x1, y1 int) {
|
||||
w, h := p.image.Size()
|
||||
width := w + i*3/4
|
||||
x := ((h - i) * 3 / 4) / 2
|
||||
return x, i, x + width, i + 1
|
||||
w, h := p.image.Size()
|
||||
width := w + i*3/4
|
||||
x := ((h - i) * 3 / 4) / 2
|
||||
return x, i, x + width, i + 1
|
||||
}
|
||||
|
||||
func (p parts) Src(i int) (x0, y0, x1, y1 int) {
|
||||
w, _ := p.image.Size()
|
||||
return 0, i, w, i + 1
|
||||
w, _ := p.image.Size()
|
||||
return 0, i, w, i + 1
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
op := &ebiten.DrawImageOptions{
|
||||
ImageParts: &parts{gophersImage},
|
||||
}
|
||||
w, h := gophersImage.Size()
|
||||
maxWidth := float64(w) + float64(h)*0.75
|
||||
op.GeoM.Translate(-maxWidth/2, -float64(h)/2)
|
||||
op.GeoM.Translate(screenWidth/2, screenHeight/2)
|
||||
if err := screen.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
op := &ebiten.DrawImageOptions{
|
||||
ImageParts: &parts{gophersImage},
|
||||
}
|
||||
w, h := gophersImage.Size()
|
||||
maxWidth := float64(w) + float64(h)*0.75
|
||||
op.GeoM.Translate(-maxWidth/2, -float64(h)/2)
|
||||
op.GeoM.Translate(screenWidth/2, screenHeight/2)
|
||||
if err := screen.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Perspective (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Perspective (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,31 +27,31 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"image/color"
|
||||
"log"
|
||||
"math"
|
||||
"fmt"
|
||||
"image/color"
|
||||
"log"
|
||||
"math"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/audio"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten/examples/common"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/audio"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten/examples/common"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
sampleRate = 44100
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
sampleRate = 44100
|
||||
)
|
||||
|
||||
var audioContext *audio.Context
|
||||
|
||||
func init() {
|
||||
var err error
|
||||
audioContext, err = audio.NewContext(sampleRate)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
audioContext, err = audio.NewContext(sampleRate)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
var pcm = make([]float64, 4*sampleRate)
|
||||
@ -59,203 +59,203 @@ var pcm = make([]float64, 4*sampleRate)
|
||||
const baseFreq = 220
|
||||
|
||||
func init() {
|
||||
s := float64(sampleRate)
|
||||
amp := []float64{1.0, 0.8, 0.6, 0.4, 0.2}
|
||||
x := []float64{4.0, 2.0, 1.0, 0.5, 0.25}
|
||||
for i := 0; i < len(pcm); i++ {
|
||||
v := 0.0
|
||||
twoPiF := 2.0 * math.Pi * baseFreq
|
||||
for j := 0; j < len(amp); j++ {
|
||||
a := amp[j] * math.Exp(-5*float64(i)/(x[j]*s))
|
||||
v += a * math.Sin(float64(i)*twoPiF*float64(j+1)/s)
|
||||
s := float64(sampleRate)
|
||||
amp := []float64{1.0, 0.8, 0.6, 0.4, 0.2}
|
||||
x := []float64{4.0, 2.0, 1.0, 0.5, 0.25}
|
||||
for i := 0; i < len(pcm); i++ {
|
||||
v := 0.0
|
||||
twoPiF := 2.0 * math.Pi * baseFreq
|
||||
for j := 0; j < len(amp); j++ {
|
||||
a := amp[j] * math.Exp(-5*float64(i)/(x[j]*s))
|
||||
v += a * math.Sin(float64(i)*twoPiF*float64(j+1)/s)
|
||||
}
|
||||
pcm[i] = v / 5.0
|
||||
}
|
||||
pcm[i] = v / 5.0
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
noteCache = map[int][]byte{}
|
||||
noteCache = map[int][]byte{}
|
||||
)
|
||||
|
||||
func toBytes(l, r []int16) []byte {
|
||||
if len(l) != len(r) {
|
||||
panic("len(l) must equal to len(r)")
|
||||
}
|
||||
b := make([]byte, len(l)*4)
|
||||
for i := range l {
|
||||
b[4*i] = byte(l[i])
|
||||
b[4*i+1] = byte(l[i] >> 8)
|
||||
b[4*i+2] = byte(r[i])
|
||||
b[4*i+3] = byte(r[i] >> 8)
|
||||
}
|
||||
return b
|
||||
if len(l) != len(r) {
|
||||
panic("len(l) must equal to len(r)")
|
||||
}
|
||||
b := make([]byte, len(l)*4)
|
||||
for i := range l {
|
||||
b[4*i] = byte(l[i])
|
||||
b[4*i+1] = byte(l[i] >> 8)
|
||||
b[4*i+2] = byte(r[i])
|
||||
b[4*i+3] = byte(r[i] >> 8)
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
func addNote(freq float64, vol float64) error {
|
||||
// TODO: Call Close method of *audio.Player.
|
||||
// However, this works without Close because Close is automatically called when GC
|
||||
// collects a *audio.Player object.
|
||||
f := int(freq)
|
||||
if n, ok := noteCache[f]; ok {
|
||||
// TODO: Call Close method of *audio.Player.
|
||||
// However, this works without Close because Close is automatically called when GC
|
||||
// collects a *audio.Player object.
|
||||
f := int(freq)
|
||||
if n, ok := noteCache[f]; ok {
|
||||
p, err := audio.NewPlayerFromBytes(audioContext, n)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := p.Play(); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
length := len(pcm) * baseFreq / f
|
||||
l := make([]int16, length)
|
||||
r := make([]int16, length)
|
||||
j := 0
|
||||
jj := 0
|
||||
for i := 0; i < len(l); i++ {
|
||||
p := pcm[j]
|
||||
l[i] = int16(p * vol * math.MaxInt16)
|
||||
r[i] = l[i]
|
||||
jj += f
|
||||
j = jj / baseFreq
|
||||
}
|
||||
n := toBytes(l, r)
|
||||
noteCache[f] = n
|
||||
p, err := audio.NewPlayerFromBytes(audioContext, n)
|
||||
if err != nil {
|
||||
return err
|
||||
return err
|
||||
}
|
||||
if err := p.Play(); err != nil {
|
||||
return err
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
length := len(pcm) * baseFreq / f
|
||||
l := make([]int16, length)
|
||||
r := make([]int16, length)
|
||||
j := 0
|
||||
jj := 0
|
||||
for i := 0; i < len(l); i++ {
|
||||
p := pcm[j]
|
||||
l[i] = int16(p * vol * math.MaxInt16)
|
||||
r[i] = l[i]
|
||||
jj += f
|
||||
j = jj / baseFreq
|
||||
}
|
||||
n := toBytes(l, r)
|
||||
noteCache[f] = n
|
||||
p, err := audio.NewPlayerFromBytes(audioContext, n)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := p.Play(); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
var keys = []ebiten.Key{
|
||||
ebiten.KeyQ,
|
||||
ebiten.KeyA,
|
||||
ebiten.KeyW,
|
||||
ebiten.KeyS,
|
||||
ebiten.KeyD,
|
||||
ebiten.KeyR,
|
||||
ebiten.KeyF,
|
||||
ebiten.KeyT,
|
||||
ebiten.KeyG,
|
||||
ebiten.KeyH,
|
||||
ebiten.KeyU,
|
||||
ebiten.KeyJ,
|
||||
ebiten.KeyI,
|
||||
ebiten.KeyK,
|
||||
ebiten.KeyO,
|
||||
ebiten.KeyL,
|
||||
ebiten.KeyQ,
|
||||
ebiten.KeyA,
|
||||
ebiten.KeyW,
|
||||
ebiten.KeyS,
|
||||
ebiten.KeyD,
|
||||
ebiten.KeyR,
|
||||
ebiten.KeyF,
|
||||
ebiten.KeyT,
|
||||
ebiten.KeyG,
|
||||
ebiten.KeyH,
|
||||
ebiten.KeyU,
|
||||
ebiten.KeyJ,
|
||||
ebiten.KeyI,
|
||||
ebiten.KeyK,
|
||||
ebiten.KeyO,
|
||||
ebiten.KeyL,
|
||||
}
|
||||
|
||||
var keyStates = map[ebiten.Key]int{}
|
||||
|
||||
func init() {
|
||||
for _, key := range keys {
|
||||
keyStates[key] = 0
|
||||
}
|
||||
for _, key := range keys {
|
||||
keyStates[key] = 0
|
||||
}
|
||||
}
|
||||
|
||||
func updateInput() {
|
||||
for _, key := range keys {
|
||||
if !ebiten.IsKeyPressed(key) {
|
||||
keyStates[key] = 0
|
||||
continue
|
||||
for _, key := range keys {
|
||||
if !ebiten.IsKeyPressed(key) {
|
||||
keyStates[key] = 0
|
||||
continue
|
||||
}
|
||||
keyStates[key]++
|
||||
}
|
||||
keyStates[key]++
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
imagePiano *ebiten.Image
|
||||
imagePiano *ebiten.Image
|
||||
)
|
||||
|
||||
func init() {
|
||||
var err error
|
||||
imageEmpty, err := ebiten.NewImage(16, 16, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
if err := imageEmpty.Fill(color.White); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
imagePiano, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
whiteKeys := []string{"A", "S", "D", "F", "G", "H", "J", "K", "L"}
|
||||
width := 24
|
||||
y := 48
|
||||
for i, k := range whiteKeys {
|
||||
x := i*width + 36
|
||||
height := 112
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
w, h := imageEmpty.Size()
|
||||
op.GeoM.Scale(float64(width-1)/float64(w), float64(height)/float64(h))
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
op.ColorM.Scale(1, 1, 1, 1)
|
||||
if err := imagePiano.DrawImage(imageEmpty, op); err != nil {
|
||||
panic(err)
|
||||
var err error
|
||||
imageEmpty, err := ebiten.NewImage(16, 16, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
if err := common.ArcadeFont.DrawText(imagePiano, k, x+8, y+height-16, 1, color.Black); err != nil {
|
||||
panic(err)
|
||||
if err := imageEmpty.Fill(color.White); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
imagePiano, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
whiteKeys := []string{"A", "S", "D", "F", "G", "H", "J", "K", "L"}
|
||||
width := 24
|
||||
y := 48
|
||||
for i, k := range whiteKeys {
|
||||
x := i*width + 36
|
||||
height := 112
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
w, h := imageEmpty.Size()
|
||||
op.GeoM.Scale(float64(width-1)/float64(w), float64(height)/float64(h))
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
op.ColorM.Scale(1, 1, 1, 1)
|
||||
if err := imagePiano.DrawImage(imageEmpty, op); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
if err := common.ArcadeFont.DrawText(imagePiano, k, x+8, y+height-16, 1, color.Black); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
blackKeys := []string{"Q", "W", "", "R", "T", "", "U", "I", "O"}
|
||||
for i, k := range blackKeys {
|
||||
if k == "" {
|
||||
continue
|
||||
blackKeys := []string{"Q", "W", "", "R", "T", "", "U", "I", "O"}
|
||||
for i, k := range blackKeys {
|
||||
if k == "" {
|
||||
continue
|
||||
}
|
||||
x := i*width + 24
|
||||
height := 64
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
w, h := imageEmpty.Size()
|
||||
op.GeoM.Scale(float64(width-1)/float64(w), float64(height)/float64(h))
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
op.ColorM.Scale(0, 0, 0, 1)
|
||||
if err := imagePiano.DrawImage(imageEmpty, op); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
if err := common.ArcadeFont.DrawText(imagePiano, k, x+8, y+height-16, 1, color.White); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
x := i*width + 24
|
||||
height := 64
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
w, h := imageEmpty.Size()
|
||||
op.GeoM.Scale(float64(width-1)/float64(w), float64(height)/float64(h))
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
op.ColorM.Scale(0, 0, 0, 1)
|
||||
if err := imagePiano.DrawImage(imageEmpty, op); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
if err := common.ArcadeFont.DrawText(imagePiano, k, x+8, y+height-16, 1, color.White); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
updateInput()
|
||||
for i, key := range keys {
|
||||
if keyStates[key] != 1 {
|
||||
continue
|
||||
updateInput()
|
||||
for i, key := range keys {
|
||||
if keyStates[key] != 1 {
|
||||
continue
|
||||
}
|
||||
if err := addNote(220*math.Exp2(float64(i-1)/12.0), 1.0); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if err := addNote(220*math.Exp2(float64(i-1)/12.0), 1.0); err != nil {
|
||||
return err
|
||||
|
||||
if err := screen.Fill(color.RGBA{0x80, 0x80, 0xc0, 0xff}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.DrawImage(imagePiano, nil); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if err := screen.Fill(color.RGBA{0x80, 0x80, 0xc0, 0xff}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.DrawImage(imagePiano, nil); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := ebitenutil.DebugPrint(screen, fmt.Sprintf("FPS: %0.2f", ebiten.CurrentFPS())); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := ebitenutil.DebugPrint(screen, fmt.Sprintf("FPS: %0.2f", ebiten.CurrentFPS())); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := audioContext.Update(); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
if err := audioContext.Update(); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Piano (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Piano (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,46 +27,46 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
count int
|
||||
gophersImage *ebiten.Image
|
||||
count int
|
||||
gophersImage *ebiten.Image
|
||||
)
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
count++
|
||||
w, h := gophersImage.Size()
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(-float64(w)/2, -float64(h)/2)
|
||||
op.GeoM.Rotate(float64(count%360) * 2 * math.Pi / 360)
|
||||
op.GeoM.Translate(screenWidth/2, screenHeight/2)
|
||||
if err := screen.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
count++
|
||||
w, h := gophersImage.Size()
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(-float64(w)/2, -float64(h)/2)
|
||||
op.GeoM.Rotate(float64(count%360) * 2 * math.Pi / 360)
|
||||
op.GeoM.Translate(screenWidth/2, screenHeight/2)
|
||||
if err := screen.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Rotate (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Rotate (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -27,149 +27,149 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
_ "image/png"
|
||||
"log"
|
||||
"math/rand"
|
||||
"fmt"
|
||||
_ "image/png"
|
||||
"log"
|
||||
"math/rand"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
ebitenImage *ebiten.Image
|
||||
ebitenImageWidth = 0
|
||||
ebitenImageHeight = 0
|
||||
ebitenImage *ebiten.Image
|
||||
ebitenImageWidth = 0
|
||||
ebitenImageHeight = 0
|
||||
)
|
||||
|
||||
type Sprite struct {
|
||||
image *ebiten.Image
|
||||
x int
|
||||
y int
|
||||
vx int
|
||||
vy int
|
||||
image *ebiten.Image
|
||||
x int
|
||||
y int
|
||||
vx int
|
||||
vy int
|
||||
}
|
||||
|
||||
func (s *Sprite) Update() {
|
||||
s.x += s.vx
|
||||
s.y += s.vy
|
||||
if s.x < 0 {
|
||||
s.x = -s.x
|
||||
s.vx = -s.vx
|
||||
}
|
||||
if s.y < 0 {
|
||||
s.y = -s.y
|
||||
s.vy = -s.vy
|
||||
}
|
||||
w, h := s.image.Size()
|
||||
if screenWidth <= s.x+w {
|
||||
s.x = 2*(screenWidth-w) - s.x
|
||||
s.vx = -s.vx
|
||||
}
|
||||
if screenHeight <= s.y+h {
|
||||
s.y = 2*(screenHeight-h) - s.y
|
||||
s.vy = -s.vy
|
||||
}
|
||||
s.x += s.vx
|
||||
s.y += s.vy
|
||||
if s.x < 0 {
|
||||
s.x = -s.x
|
||||
s.vx = -s.vx
|
||||
}
|
||||
if s.y < 0 {
|
||||
s.y = -s.y
|
||||
s.vy = -s.vy
|
||||
}
|
||||
w, h := s.image.Size()
|
||||
if screenWidth <= s.x+w {
|
||||
s.x = 2*(screenWidth-w) - s.x
|
||||
s.vx = -s.vx
|
||||
}
|
||||
if screenHeight <= s.y+h {
|
||||
s.y = 2*(screenHeight-h) - s.y
|
||||
s.vy = -s.vy
|
||||
}
|
||||
}
|
||||
|
||||
type Sprites struct {
|
||||
sprites []*Sprite
|
||||
num int
|
||||
sprites []*Sprite
|
||||
num int
|
||||
}
|
||||
|
||||
func (s Sprites) Update() {
|
||||
for _, sprite := range s.sprites {
|
||||
sprite.Update()
|
||||
}
|
||||
for _, sprite := range s.sprites {
|
||||
sprite.Update()
|
||||
}
|
||||
}
|
||||
|
||||
func (s Sprites) Len() int {
|
||||
return s.num
|
||||
return s.num
|
||||
}
|
||||
|
||||
func (s Sprites) Dst(i int) (x0, y0, x1, y1 int) {
|
||||
if s.num <= i {
|
||||
return 0, 0, 0, 0
|
||||
}
|
||||
ss := s.sprites[i]
|
||||
return ss.x, ss.y, ss.x + ebitenImageWidth, ss.y + ebitenImageHeight
|
||||
if s.num <= i {
|
||||
return 0, 0, 0, 0
|
||||
}
|
||||
ss := s.sprites[i]
|
||||
return ss.x, ss.y, ss.x + ebitenImageWidth, ss.y + ebitenImageHeight
|
||||
}
|
||||
|
||||
func (s Sprites) Src(i int) (x0, y0, x1, y1 int) {
|
||||
if s.num <= i {
|
||||
return 0, 0, 0, 0
|
||||
}
|
||||
return 0, 0, ebitenImageWidth, ebitenImageHeight
|
||||
if s.num <= i {
|
||||
return 0, 0, 0, 0
|
||||
}
|
||||
return 0, 0, ebitenImageWidth, ebitenImageHeight
|
||||
}
|
||||
|
||||
const (
|
||||
MinSprites = 0
|
||||
MaxSprites = 50000
|
||||
MinSprites = 0
|
||||
MaxSprites = 50000
|
||||
)
|
||||
|
||||
var sprites = &Sprites{make([]*Sprite, MaxSprites), 500}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
if ebiten.IsKeyPressed(ebiten.KeyLeft) {
|
||||
sprites.num -= 20
|
||||
if sprites.num < MinSprites {
|
||||
sprites.num = MinSprites
|
||||
if ebiten.IsKeyPressed(ebiten.KeyLeft) {
|
||||
sprites.num -= 20
|
||||
if sprites.num < MinSprites {
|
||||
sprites.num = MinSprites
|
||||
}
|
||||
}
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyRight) {
|
||||
sprites.num += 20
|
||||
if MaxSprites < sprites.num {
|
||||
sprites.num = MaxSprites
|
||||
if ebiten.IsKeyPressed(ebiten.KeyRight) {
|
||||
sprites.num += 20
|
||||
if MaxSprites < sprites.num {
|
||||
sprites.num = MaxSprites
|
||||
}
|
||||
}
|
||||
}
|
||||
sprites.Update()
|
||||
sprites.Update()
|
||||
|
||||
if ebiten.IsRunningSlowly() {
|
||||
return nil
|
||||
}
|
||||
op := &ebiten.DrawImageOptions{
|
||||
ImageParts: sprites,
|
||||
}
|
||||
op.ColorM.Scale(1.0, 1.0, 1.0, 0.5)
|
||||
if err := screen.DrawImage(ebitenImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
msg := fmt.Sprintf(`FPS: %0.2f
|
||||
if ebiten.IsRunningSlowly() {
|
||||
return nil
|
||||
}
|
||||
op := &ebiten.DrawImageOptions{
|
||||
ImageParts: sprites,
|
||||
}
|
||||
op.ColorM.Scale(1.0, 1.0, 1.0, 0.5)
|
||||
if err := screen.DrawImage(ebitenImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
msg := fmt.Sprintf(`FPS: %0.2f
|
||||
Num of sprites: %d
|
||||
Press <- or -> to change the number of sprites`, ebiten.CurrentFPS(), sprites.Len())
|
||||
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
ebitenImage, _, err = ebitenutil.NewImageFromFile("_resources/images/ebiten.png", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
ebitenImageWidth, ebitenImageHeight = ebitenImage.Size()
|
||||
for i := range sprites.sprites {
|
||||
w, h := ebitenImage.Size()
|
||||
x, y := rand.Intn(screenWidth-w), rand.Intn(screenHeight-h)
|
||||
vx, vy := 2*rand.Intn(2)-1, 2*rand.Intn(2)-1
|
||||
sprites.sprites[i] = &Sprite{
|
||||
image: ebitenImage,
|
||||
x: x,
|
||||
y: y,
|
||||
vx: vx,
|
||||
vy: vy,
|
||||
var err error
|
||||
ebitenImage, _, err = ebitenutil.NewImageFromFile("_resources/images/ebiten.png", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
ebitenImageWidth, ebitenImageHeight = ebitenImage.Size()
|
||||
for i := range sprites.sprites {
|
||||
w, h := ebitenImage.Size()
|
||||
x, y := rand.Intn(screenWidth-w), rand.Intn(screenHeight-h)
|
||||
vx, vy := 2*rand.Intn(2)-1, 2*rand.Intn(2)-1
|
||||
sprites.sprites[i] = &Sprite{
|
||||
image: ebitenImage,
|
||||
x: x,
|
||||
y: y,
|
||||
vx: vx,
|
||||
vy: vy,
|
||||
}
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Sprites (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Sprites (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
@ -98,17 +98,17 @@ the <code>main.go</code> file:</p>
|
||||
<pre><code>package main
|
||||
|
||||
import (
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
ebitenutil.DebugPrint(screen, "Hello world!")
|
||||
return nil
|
||||
ebitenutil.DebugPrint(screen, "Hello world!")
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
ebiten.Run(update, 320, 240, 2, "Hello world!")
|
||||
ebiten.Run(update, 320, 240, 2, "Hello world!")
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user