<!DOCTYPE html> <script src="../scripts/force-https.js"></script> <link rel="shortcut icon" href="../favicon.png" type="image/png" > <link rel="icon" href="../favicon.png" type="image/png" > <title>Ebiten example - keyboard</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> <header class="navbar"><div class="container"> <div class="navbar-header"> <a class="navbar-brand" href="..">Ebiten</a> </div> <nav class="collapse navbar-collapse"> <ul class="nav navbar-nav navbar-right"> <li><a href="https://github.com/hajimehoshi/ebiten">GitHub</a></li> <li><a href="https://godoc.org/github.com/hajimehoshi/ebiten">GoDoc</a></li> <li><a href="https://github.com/hajimehoshi/ebiten/wiki">Wiki</a> </ul> </nav> </header> <main><div class="container"> <h2>Ebiten example - keyboard</h2> <iframe src="keyboard.content.html" width="640" height="480"></iframe> <pre><code class="language-go">// +build example package main import ( "log" "strconv" "github.com/hajimehoshi/ebiten" "github.com/hajimehoshi/ebiten/ebitenutil" "github.com/hajimehoshi/ebiten/examples/keyboard/keyboard" ) const ( 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 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", // Arrows ebiten.KeyDown: "Down", ebiten.KeyLeft: "Left", ebiten.KeyRight: "Right", ebiten.KeyUp: "Up", // Mods ebiten.KeyShift: "Shift", ebiten.KeyControl: "Ctrl", ebiten.KeyAlt: "Alt", } type pressedKeysParts []string func (p pressedKeysParts) Len() int { 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 } func (p pressedKeysParts) Src(i int) (x0, y0, x1, y1 int) { 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 } 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 main() { if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Keyboard (Ebiten Demo)"); err != nil { log.Fatal(err) } } </code></pre> </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>