mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-15 07:27:32 +01:00
131 lines
3.0 KiB
Go
131 lines
3.0 KiB
Go
// Copyright 2015 Hajime Hoshi
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build example
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package main
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import (
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"log"
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"strconv"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/ebitenutil"
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"github.com/hajimehoshi/ebiten/examples/keyboard/keyboard"
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)
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const (
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screenWidth = 320
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screenHeight = 240
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)
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var keyboardImage *ebiten.Image
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func init() {
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var err error
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keyboardImage, _, err = ebitenutil.NewImageFromFile("_resources/images/keyboard/keyboard.png", ebiten.FilterNearest)
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if err != nil {
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log.Fatal(err)
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}
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}
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var keyNames = map[ebiten.Key]string{
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ebiten.KeyBackspace: "BS",
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ebiten.KeyComma: ",",
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ebiten.KeyDelete: "Del",
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ebiten.KeyEnter: "Enter",
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ebiten.KeyEscape: "Esc",
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ebiten.KeyPeriod: ".",
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ebiten.KeySpace: "Space",
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ebiten.KeyTab: "Tab",
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// Arrows
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ebiten.KeyDown: "Down",
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ebiten.KeyLeft: "Left",
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ebiten.KeyRight: "Right",
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ebiten.KeyUp: "Up",
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// Mods
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ebiten.KeyShift: "Shift",
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ebiten.KeyControl: "Ctrl",
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ebiten.KeyAlt: "Alt",
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}
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type pressedKeysParts []string
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func (p pressedKeysParts) Len() int {
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return len(p)
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}
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func (p pressedKeysParts) Dst(i int) (x0, y0, x1, y1 int) {
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k := p[i]
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r, ok := keyboard.KeyRect(k)
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if !ok {
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return 0, 0, 0, 0
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}
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return r.Min.X, r.Min.Y, r.Max.X, r.Max.Y
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}
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func (p pressedKeysParts) Src(i int) (x0, y0, x1, y1 int) {
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return p.Dst(i)
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}
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func update(screen *ebiten.Image) error {
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const offsetX, offsetY = 24, 40
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Translate(offsetX, offsetY)
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op.ColorM.Scale(0.5, 0.5, 0.5, 1)
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if err := screen.DrawImage(keyboardImage, op); err != nil {
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return err
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}
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pressed := []string{}
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for i := 0; i <= 9; i++ {
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if ebiten.IsKeyPressed(ebiten.Key(i) + ebiten.Key0) {
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pressed = append(pressed, string(i+'0'))
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}
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}
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for c := 'A'; c <= 'Z'; c++ {
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if ebiten.IsKeyPressed(ebiten.Key(c) - 'A' + ebiten.KeyA) {
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pressed = append(pressed, string(c))
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}
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}
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for i := 1; i <= 12; i++ {
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if ebiten.IsKeyPressed(ebiten.Key(i) + ebiten.KeyF1 - 1) {
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pressed = append(pressed, "F"+strconv.Itoa(i))
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}
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}
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for key, name := range keyNames {
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if ebiten.IsKeyPressed(key) {
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pressed = append(pressed, name)
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}
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}
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op = &ebiten.DrawImageOptions{
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ImageParts: pressedKeysParts(pressed),
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}
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op.GeoM.Translate(offsetX, offsetY)
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if err := screen.DrawImage(keyboardImage, op); err != nil {
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return err
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}
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return nil
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}
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func main() {
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if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Keyboard (Ebiten Demo)"); err != nil {
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log.Fatal(err)
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}
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}
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