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graphics: Refactoring: screenshot dump: remove global variables

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This commit is contained in:
Hajime Hoshi 2018-04-28 04:59:31 +09:00
parent 177f4c5108
commit 245dde9bc1
1 changed files with 33 additions and 41 deletions
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74
run.go
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@ -91,53 +91,51 @@ func run(width, height int, scale float64, title string, g *graphicsContext, mai
return nil
}
var screenshot = false
var screenshotKey Key
type imageDumper struct {
f func(screen *Image) error
func init() {
keyname := os.Getenv("EBITEN_SCREENSHOT_KEY")
if keyname == "" {
return
}
key, ok := keyNameToKey(keyname)
if !ok {
return
}
screenshot = true
screenshotKey = key
keyState map[Key]int
hasScreenshotKey bool
screenshotKey Key
toTakeScreenshot bool
}
type screenshotTaker struct {
f func(screen *Image) error
keyState int
needToTake bool
}
func (s *screenshotTaker) update(screen *Image) error {
if err := s.f(screen); err != nil {
func (i *imageDumper) update(screen *Image) error {
if err := i.f(screen); err != nil {
return err
}
if !screenshot {
return nil
// If keyState is nil, all values are not initialized.
if i.keyState == nil {
i.keyState = map[Key]int{}
if keyname := os.Getenv("EBITEN_SCREENSHOT_KEY"); keyname != "" {
if key, ok := keyNameToKey(keyname); ok {
i.hasScreenshotKey = true
i.screenshotKey = key
}
}
}
if IsKeyPressed(screenshotKey) {
s.keyState++
if s.keyState == 1 {
s.needToTake = true
if i.hasScreenshotKey && IsKeyPressed(i.screenshotKey) {
i.keyState[i.screenshotKey]++
if i.keyState[i.screenshotKey] == 1 {
i.toTakeScreenshot = true
}
} else {
s.keyState = 0
i.keyState[i.screenshotKey] = 0
}
if s.needToTake && !IsRunningSlowly() {
if i.toTakeScreenshot && !IsRunningSlowly() {
filename := "screenshot.png"
i := 0
idx := 0
for {
if _, err := os.Stat(filename); os.IsNotExist(err) {
break
}
i++
filename = fmt.Sprintf("screenshot%d.png", i)
idx++
filename = fmt.Sprintf("screenshot%d.png", idx)
}
f, err := os.Create(filename)
if err != nil {
@ -148,7 +146,7 @@ func (s *screenshotTaker) update(screen *Image) error {
if err := png.Encode(f, screen); err != nil {
return err
}
s.needToTake = false
i.toTakeScreenshot = false
}
return nil
}
@ -183,10 +181,7 @@ func (s *screenshotTaker) update(screen *Image) error {
//
// Don't call Run twice or more in one process.
func Run(f func(*Image) error, width, height int, scale float64, title string) error {
if screenshot {
s := &screenshotTaker{f: f}
f = s.update
}
f = (&imageDumper{f: f}).update
ch := make(chan error)
go func() {
@ -212,10 +207,7 @@ func Run(f func(*Image) error, width, height int, scale float64, title string) e
// Ebiten users should NOT call this function.
// Instead, functions in github.com/hajimehoshi/ebiten/mobile package calls this.
func RunWithoutMainLoop(f func(*Image) error, width, height int, scale float64, title string) <-chan error {
if screenshot {
s := &screenshotTaker{f: f}
f = s.update
}
f = (&imageDumper{f: f}).update
ch := make(chan error)
go func() {