Add example keyboard

example/keyboard/main.go

@@ -0,0 +1,59 @@
+// Copyright 2015 Hajime Hoshi
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"github.com/hajimehoshi/ebiten"
+	"github.com/hajimehoshi/ebiten/ebitenutil"
+	"log"
+	"strconv"
+	"strings"
+)
+
+const (
+	screenWidth  = 320
+	screenHeight = 240
+)
+
+// TODO: Add Key.String()
+
+var keys = []ebiten.Key{
+	ebiten.Key0, ebiten.Key1, ebiten.Key2, ebiten.Key3, ebiten.Key4,
+	ebiten.Key5, ebiten.Key6, ebiten.Key7, ebiten.Key8, ebiten.Key9,
+	ebiten.KeyA, ebiten.KeyB, ebiten.KeyC, ebiten.KeyD, ebiten.KeyE,
+	ebiten.KeyF, ebiten.KeyG, ebiten.KeyH, ebiten.KeyI, ebiten.KeyJ,
+	ebiten.KeyK, ebiten.KeyL, ebiten.KeyM, ebiten.KeyN, ebiten.KeyO,
+	ebiten.KeyP, ebiten.KeyQ, ebiten.KeyR, ebiten.KeyS, ebiten.KeyT,
+	ebiten.KeyU, ebiten.KeyV, ebiten.KeyW, ebiten.KeyX, ebiten.KeyY,
+	ebiten.KeyZ,
+}
+
+func update(screen *ebiten.Image) error {
+	pressed := []string{}
+	for _, key := range keys {
+		if ebiten.IsKeyPressed(key) {
+			pressed = append(pressed, strconv.Itoa(int(key)))
+		}
+	}
+	str := "Pressed Keys: " + strings.Join(pressed, ",")
+	ebitenutil.DebugPrint(screen, str)
+	return nil
+}
+
+func main() {
+	if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Keyboard (Ebiten Demo)"); err != nil {
+		log.Fatal(err)
+	}
+}

example/paint/main.go

@@ -34,7 +34,7 @@ var (
 	canvasRenderTarget *ebiten.Image
 )
 
-func Update(screen *ebiten.Image) error {
+func update(screen *ebiten.Image) error {
 	if ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) {
 		count++
 	}
@@ -76,7 +76,7 @@ func main() {
 	}
 	canvasRenderTarget.Fill(color.White)
 
-	if err := ebiten.Run(Update, screenWidth, screenHeight, 2, "Paint (Ebiten Demo)"); err != nil {
+	if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Paint (Ebiten Demo)"); err != nil {
 		log.Fatal(err)
 	}
 }

genkeys.go

@@ -17,6 +17,7 @@
 // Note:
 //   * Respect GLFW key names
 //   * https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent.keyCode
+//   * It is best to replace keyCode with code, but many browsers don't implement it.
 
 package main
 
@@ -123,7 +124,7 @@ const uiKeysJSTmpl = `{{.License}}
 package ui
 
 var keyCodeToKey = map[int]Key{
-{{range $code, $name := .Keys}}{{$code}}: {{$name}},
+{{range $code, $name := .KeyCodeToName}}{{$code}}: {{$name}},
 {{end}}
 }
 `
@@ -163,7 +164,7 @@ func main() {
 		// NOTE: According to godoc, maps are automatically sorted by key.
 		tmpl.Execute(f, map[string]interface{}{
 			"License":       license,
-			"Keys":     keyCodeToName,
+			"KeyCodeToName": keyCodeToName,
 			"Codes":         codes,
 			"KeyNames":      names,
 		})