func update(screen *ebiten.Image) error {
if ebiten.IsKeyPressed(ebiten.KeySpace) {
thePlayer.MoveForward()
}
rotated := false
if ebiten.IsKeyPressed(ebiten.KeyRight) {
thePlayer.RotateRight()
rotated = true
}
if ebiten.IsKeyPressed(ebiten.KeyLeft) {
thePlayer.RotateLeft()
rotated = true
}
if !rotated {
thePlayer.Stabilize()
}
if err := screen.Fill(skyColor); err != nil {
return err
}
if err := updateGroundImage(groundImage); err != nil {
return err
}
if err := drawGroundImage(screen, groundImage); err != nil {
return err
}
tutrial := "Space: Move forward\nLeft/Right: Rotate"
msg := fmt.Sprintf("FPS: %0.2f\n%s", ebiten.CurrentFPS(), tutrial)
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
return err
}
return nil
}
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.KeyRight) {
sprites.num += 20
if MaxSprites < sprites.num {
sprites.num = MaxSprites
}
}
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
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
}
func (g *Game) Run(width, height, scale int, title string) error {
ticker := time.NewTicker(time.Millisecond * 70)
go func() {
for range ticker.C {
if ebiten.IsKeyPressed(ebiten.KeyR) {
g.Score = 0
g.newMaze()
}
if ebiten.IsKeyPressed(ebiten.KeyLeft) && g.canGoLeft() {
g.X--
}
if ebiten.IsKeyPressed(ebiten.KeyRight) && g.canGoRight() {
g.X++
}
if ebiten.IsKeyPressed(ebiten.KeyUp) && g.canGoUp() {
g.Y--
}
if ebiten.IsKeyPressed(ebiten.KeyDown) && g.canGoDown() {
g.Y++
}
}
}()
defer ticker.Stop()
return ebiten.Run(g.update, width, height, scale, title)
}
func (p *Player) updateSE() error {
if seStream == nil {
return nil
}
if !ebiten.IsKeyPressed(ebiten.KeyP) {
keyState[ebiten.KeyP] = 0
return nil
}
keyState[ebiten.KeyP]++
if keyState[ebiten.KeyP] != 1 {
return nil
}
if sePlayer == nil {
var err error
sePlayer, err = audio.NewPlayer(audioContext, seStream)
if err != nil {
return err
}
}
if sePlayer.IsPlaying() {
return nil
}
if err := sePlayer.Rewind(); err != nil {
return err
}
return sePlayer.Play()
}
func (i *Input) Update() {
if i.keyStates == nil {
i.keyStates = map[ebiten.Key]int{}
}
for key := ebiten.Key(0); key <= ebiten.KeyMax; key++ {
if !ebiten.IsKeyPressed(ebiten.Key(key)) {
i.keyStates[key] = 0
continue
}
i.keyStates[key]++
}
const gamepadID = 0
if i.gamepadButtonStates == nil {
i.gamepadButtonStates = map[ebiten.GamepadButton]int{}
}
for b := ebiten.GamepadButton(0); b <= ebiten.GamepadButtonMax; b++ {
if !ebiten.IsGamepadButtonPressed(gamepadID, b) {
i.gamepadButtonStates[b] = 0
continue
}
i.gamepadButtonStates[b]++
}
if i.gamepadAbstractButtonStates == nil {
i.gamepadAbstractButtonStates = map[abstractButton]int{}
}
for _, b := range gamepadAbstractButtons {
if !i.gamepadConfig.IsButtonPressed(gamepadID, b) {
i.gamepadAbstractButtonStates[b] = 0
continue
}
i.gamepadAbstractButtonStates[b]++
}
}
func (i *Input) Update() {
for key := range i.keyStates {
if !ebiten.IsKeyPressed(ebiten.Key(key)) {
i.keyStates[key] = 0
continue
}
i.keyStates[key]++
}
const gamepadID = 0
for b := range i.gamepadButtonStates {
if !ebiten.IsGamepadButtonPressed(gamepadID, ebiten.GamepadButton(b)) {
i.gamepadButtonStates[b] = 0
continue
}
i.gamepadButtonStates[b]++
}
for _, b := range gamepadStdButtons {
if !i.gamepadConfig.IsButtonPressed(gamepadID, b) {
i.gamepadStdButtonStates[b] = 0
continue
}
i.gamepadStdButtonStates[b]++
}
}
func updateInput() {
for _, key := range keys {
if !ebiten.IsKeyPressed(key) {
keyStates[key] = 0
continue
}
keyStates[key]++
}
}
func readKeys() {
for key, _ := range keyStates {
if !ebiten.IsKeyPressed(key) {
keyStates[key] = -1
continue
}
keyStates[key]++
}
}
func (i *Input) Update() error {
for k := range dirKeys {
if ebiten.IsKeyPressed(k) {
i.keyState[k]++
} else {
i.keyState[k] = 0
}
}
return nil
}
func (p *Player) updateVolume() error {
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
}
func update(screen *ebiten.Image) error {
for key, _ := range keyStates {
if !ebiten.IsKeyPressed(key) {
keyStates[key] = 0
continue
}
keyStates[key]++
}
d := 0
switch screenScale {
case 1:
d = 32
case 2:
d = 16
}
if keyStates[ebiten.KeyUp] == 1 {
screenHeight += d
}
if keyStates[ebiten.KeyDown] == 1 {
if 16 < screenHeight {
screenHeight -= d
}
}
if keyStates[ebiten.KeyLeft] == 1 {
if 16 < screenWidth {
screenWidth -= d
}
}
if keyStates[ebiten.KeyRight] == 1 {
screenWidth += d
}
if keyStates[ebiten.KeyS] == 1 {
screenScale = 3 - screenScale // Swap 1 and 2
}
ebiten.SetScreenSize(screenWidth, screenHeight)
ebiten.SetScreenScale(screenScale)
screen.Fill(color.RGBA{0x80, 0x80, 0xc0, 0xff})
w, h := gophersImage.Size()
w2, h2 := screen.Size()
op := &ebiten.DrawImageOptions{}
op.GeoM.Translate(float64(-w+w2)/2, float64(-h+h2)/2)
if err := screen.DrawImage(gophersImage, op); err != nil {
return err
}
x, y := ebiten.CursorPosition()
msg := fmt.Sprintf(`Press arrow keys to change the window size
Press S key to change the window scale
Cursor: (%d, %d)
FPS: %0.2f`, x, y, ebiten.CurrentFPS())
ebitenutil.DebugPrint(screen, msg)
return nil
}
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
}
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 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)
}
}
op = &ebiten.DrawImageOptions{
ImageParts: pressedKeysParts(pressed),
}
op.GeoM.Translate(offsetX, offsetY)
if err := screen.DrawImage(keyboardImage, op); err != nil {
return err
}
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()
}
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()
}
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)
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]
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
}
func (g *Game) update(screen *ebiten.Image) error {
if g.Frame == nil ||
ebiten.IsKeyPressed(ebiten.KeyUp) ||
ebiten.IsKeyPressed(ebiten.KeyDown) ||
ebiten.IsKeyPressed(ebiten.KeyLeft) ||
ebiten.IsKeyPressed(ebiten.KeyRight) {
g.updateFrame()
}
if err := screen.DrawImage(g.Frame, g.DrawImageOptions); err != nil {
return err
}
if g.Maze[g.X][g.Y] == maze.Finish {
g.Score += (g.W * g.H) / 100
g.newMaze()
}
if ebiten.IsKeyPressed(ebiten.KeyEscape) || ebiten.IsKeyPressed(ebiten.KeyQ) {
return errors.New("exited")
}
return nil
}