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<!DOCTYPE html>
< meta charset = "utf-8" >
< meta property = "og:image" itemprop = "image primaryImageOfPage" content = "https://hajimehoshi.github.io/ebiten/images/examples/typewriter.png" >
< meta name = "description" content = "Ebiten example - typewriter" >
< link rel = "shortcut icon" href = "../favicon.png" type = "image/png" >
< link rel = "icon" href = "../favicon.png" type = "image/png" >
< title > Ebiten example - typewriter< / title >
< link rel = "stylesheet" href = "../stylesheets/bootstrap.min.css" >
< link rel = "stylesheet" href = "../stylesheets/highlight-github.css" >
< link rel = "stylesheet" href = "../stylesheets/ebiten.css" >
< script src = "../scripts/googleanalytics.js" > < / script >
< nav class = "navbar" > < div class = "container" >
< nav class = "d-flex flex-row" style = "width: 100%;" >
< div class = "nav mr-auto" > < a class = "navbar-brand" href = "../" > < img src = "../images/logo_white.svg" alt = "EBITEN" > < / a > < / div >
< ul class = "nav" >
< li class = "nav-item" > < a class = "nav-link" href = "https://github.com/hajimehoshi/ebiten" > GitHub< / a > < / li >
< li class = "nav-item" > < a class = "nav-link" href = "https://godoc.org/github.com/hajimehoshi/ebiten" > GoDoc< / a > < / li >
< li class = "nav-item" > < a class = "nav-link" href = "https://github.com/hajimehoshi/ebiten/wiki" > Wiki< / a >
< / ul >
< / nav >
< / div > < / nav >
< main > < div class = "container" >
< h2 > Ebiten example - typewriter< / h2 >
< iframe src = "typewriter.content.html" width = "640" height = "480" > < / iframe >
< div class = "card" > < pre class = "card-body" > < code class = "language-go" > // + build example
package main
import (
" log"
" strings"
" github.com/hajimehoshi/ebiten"
" github.com/hajimehoshi/ebiten/ebitenutil"
)
var (
text = " Type on the keyboard:\n"
counter = 0
bsPrevPressed = false
)
func update(screen *ebiten.Image) error {
text + = string(ebiten.InputChars())
ss := strings.Split(text, " \n" )
if len(ss) > 10 {
text = strings.Join(ss[len(ss)-10:], " \n" )
}
if ebiten.IsKeyPressed(ebiten.KeyEnter) & & !strings.HasSuffix(text, " \n" ) {
text + = " \n"
}
bsPressed := ebiten.IsKeyPressed(ebiten.KeyBackspace)
if !bsPrevPressed & & bsPressed {
if len(text) > = 1 {
text = text[:len(text)-1]
}
}
bsPrevPressed = bsPressed
counter+ +
if ebiten.IsRunningSlowly() {
return nil
}
t := text
if counter%60 < 30 {
t + = " _"
}
ebitenutil.DebugPrint(screen, t)
return nil
}
func main() {
if err := ebiten.Run(update, 320, 240, 2.0, " Typewriter (Ebiten Demo)" ); err != nil {
log.Fatal(err)
}
}
< / code > < / pre > < / div >
< / div > < / main >
< footer > < div class = "container" >
< p > © 2013 Hajime Hoshi< / p >
< p > Code is licensed under < a href = "https://github.com/hajimehoshi/ebiten/blob/master/LICENSE" > the Apache License 2.0< / a > .< / p >
< p > The content of this page is licensed under < a href = "https://creativecommons.org/licenses/by/4.0/" > the Creative Commons Attribution 4.0 License< / a > .< / p >
< / div > < / footer >
< script src = "../scripts/highlight.pack.js" > < / script >
< script > hljs . initHighlightingOnLoad ( ) ; < / script >
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