mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2025-01-23 17:32:02 +01:00
doc: Add new examples
This commit is contained in:
Hajime Hoshi
parent
9bd754c6d4
commit
4e2d661541
@ -171,13 +171,18 @@ func versions() string {
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var examples = []example{
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{Name: "alphablending"},
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{Name: "audio"},
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{Name: "font"},
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{Name: "hsv"},
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{Name: "hue"},
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{Name: "gamepad"},
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{Name: "keyboard"},
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{Name: "masking"},
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{Name: "mosaic"},
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{Name: "noise"},
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{Name: "paint"},
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{Name: "perspective"},
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{Name: "piano"},
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{Name: "rotate"},
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{Name: "sprites"},
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{Name: "blocks"},
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39
_docs/public/examples/audio.content.html
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39
_docs/public/examples/audio.content.html
Normal file
@ -0,0 +1,39 @@
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<!DOCTYPE html>
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<!--
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Copyright 2014 Hajime Hoshi
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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-->
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<script>
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'use strict';
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window.addEventListener('load', function() {
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function isProduction() {
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var l = window.top.location;
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if (l.hash === '#_production') {
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return true;
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}
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if (l.hostname === 'localhost' || l.hostname === '127.0.0.1') {
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return false;
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}
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return true;
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}
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var s = document.createElement('script');
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var src = 'audio.js';
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if (isProduction()) {
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src = '//hajimehoshi.github.io/ebiten.pagestorage/master/' + src;
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}
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s.src = src;
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document.body.appendChild(s);
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});
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</script>
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326
_docs/public/examples/audio.html
Normal file
326
_docs/public/examples/audio.html
Normal file
@ -0,0 +1,326 @@
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<!DOCTYPE html>
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<!--
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Copyright 2014 Hajime Hoshi
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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-->
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<link rel="shortcut icon" href="../favicon.png" type="image/png" >
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<link rel="icon" href="../favicon.png" type="image/png" >
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<title>Ebiten example - audio</title>
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<style>
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body {
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font-family: sans-serif;
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}
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iframe {
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border-color: #999;
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border-style: solid;
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border-width: 1px;
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overflow: hidden;
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}
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pre {
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background: #eee;
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padding: 1em;
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}
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</style>
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<nav><a href="..">Ebiten</a></nav>
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<h1>Ebiten example - audio</h1>
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<iframe src="audio.content.html" width="640" height="480"></iframe>
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<pre><code>package main
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import (
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"bytes"
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"fmt"
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"image/color"
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"log"
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"time"
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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/exp/audio"
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"github.com/hajimehoshi/ebiten/exp/audio/vorbis"
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"github.com/hajimehoshi/ebiten/exp/audio/wav"
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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 (
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playerBarImage *ebiten.Image
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playerCurrentImage *ebiten.Image
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)
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func init() {
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var err error
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playerBarImage, err = ebiten.NewImage(300, 4, ebiten.FilterNearest)
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if err != nil {
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log.Fatal(err)
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}
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playerBarImage.Fill(&color.RGBA{0x80, 0x80, 0x80, 0xff})
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playerCurrentImage, err = ebiten.NewImage(4, 10, ebiten.FilterNearest)
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if err != nil {
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log.Fatal(err)
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}
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playerCurrentImage.Fill(&color.RGBA{0xff, 0xff, 0xff, 0xff})
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}
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type Player struct {
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audioPlayer *audio.Player
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total time.Duration
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}
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var (
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audioContext *audio.Context
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musicPlayer *Player
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seStream *wav.Stream
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sePlayer *audio.Player
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musicCh = make(chan *Player)
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seCh = make(chan *wav.Stream)
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mouseButtonState = map[ebiten.MouseButton]int{}
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keyState = map[ebiten.Key]int{}
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volume128 = 128
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)
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func playerBarRect() (x, y, w, h int) {
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w, h = playerBarImage.Size()
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x = (screenWidth - w) / 2
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y = screenHeight - h - 16
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return
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}
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type SEStream struct {
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*bytes.Reader
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}
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func (s *SEStream) Close() error {
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return nil
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}
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func (p *Player) updateSE() error {
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if seStream == nil {
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return nil
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}
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if !ebiten.IsKeyPressed(ebiten.KeyP) {
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keyState[ebiten.KeyP] = 0
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return nil
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}
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keyState[ebiten.KeyP]++
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if keyState[ebiten.KeyP] != 1 {
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return nil
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}
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if sePlayer == nil {
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var err error
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sePlayer, err = audioContext.NewPlayer(seStream)
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if err != nil {
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return err
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}
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}
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if sePlayer.IsPlaying() {
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return nil
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}
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if err := sePlayer.Rewind(); err != nil {
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return err
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}
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return sePlayer.Play()
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}
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func (p *Player) updateVolume() error {
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if p.audioPlayer == nil {
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return nil
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}
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if ebiten.IsKeyPressed(ebiten.KeyZ) {
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volume128--
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}
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if ebiten.IsKeyPressed(ebiten.KeyX) {
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volume128++
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}
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if volume128 < 0 {
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volume128 = 0
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}
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if 128 < volume128 {
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volume128 = 128
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}
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p.audioPlayer.SetVolume(float64(volume128) / 128)
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return nil
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}
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func (p *Player) updatePlayPause() error {
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if p.audioPlayer == nil {
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return nil
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}
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if !ebiten.IsKeyPressed(ebiten.KeyS) {
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keyState[ebiten.KeyS] = 0
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return nil
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}
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keyState[ebiten.KeyS]++
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if keyState[ebiten.KeyS] != 1 {
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return nil
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}
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if p.audioPlayer.IsPlaying() {
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return p.audioPlayer.Pause()
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}
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return p.audioPlayer.Play()
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}
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func (p *Player) updateBar() error {
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if p.audioPlayer == nil {
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return nil
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}
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if !ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) {
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mouseButtonState[ebiten.MouseButtonLeft] = 0
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return nil
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}
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mouseButtonState[ebiten.MouseButtonLeft]++
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if mouseButtonState[ebiten.MouseButtonLeft] != 1 {
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return nil
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}
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x, y := ebiten.CursorPosition()
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bx, by, bw, bh := playerBarRect()
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if y < by || by+bh <= y {
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return nil
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}
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if x < bx || bx+bw <= x {
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return nil
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}
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pos := time.Duration(x-bx) * p.total / time.Duration(bw)
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return p.audioPlayer.Seek(pos)
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}
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func (p *Player) close() error {
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return p.audioPlayer.Close()
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}
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func update(screen *ebiten.Image) error {
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if err := audioContext.Update(); err != nil {
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return err
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}
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if musicPlayer == nil {
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select {
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case musicPlayer = <-musicCh:
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default:
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}
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}
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if seStream == nil {
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select {
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case seStream = <-seCh:
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default:
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}
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}
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if musicPlayer != nil {
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if err := musicPlayer.updateBar(); err != nil {
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return err
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}
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if err := musicPlayer.updatePlayPause(); err != nil {
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return err
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}
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if err := musicPlayer.updateSE(); err != nil {
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return err
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}
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if err := musicPlayer.updateVolume(); err != nil {
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return err
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}
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}
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op := &ebiten.DrawImageOptions{}
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x, y, w, h := playerBarRect()
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op.GeoM.Translate(float64(x), float64(y))
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screen.DrawImage(playerBarImage, op)
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currentTimeStr := "00:00"
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if musicPlayer != nil {
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c := musicPlayer.audioPlayer.Current()
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// Current Time
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m := (c / time.Minute) % 100
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s := (c / time.Second) % 60
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currentTimeStr = fmt.Sprintf("%02d:%02d", m, s)
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// Bar
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cw, ch := playerCurrentImage.Size()
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cx := int(time.Duration(w)*c/musicPlayer.total) + x - cw/2
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cy := y - (ch-h)/2
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Translate(float64(cx), float64(cy))
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screen.DrawImage(playerCurrentImage, op)
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}
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msg := fmt.Sprintf(`FPS: %0.2f
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Press S to toggle Play/Pause
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Press P to play SE
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Press Z or X to change volume of the music
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%s`, ebiten.CurrentFPS(), currentTimeStr)
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if musicPlayer == nil {
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msg += "\nNow Loading..."
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}
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ebitenutil.DebugPrint(screen, msg)
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return nil
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}
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func main() {
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wavF, err := ebitenutil.OpenFile("_resources/audio/jab.wav")
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if err != nil {
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log.Fatal(err)
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}
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oggF, err := ebitenutil.OpenFile("_resources/audio/ragtime.ogg")
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if err != nil {
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log.Fatal(err)
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}
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const sampleRate = 22050
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const bytesPerSample = 4 // TODO: This should be defined in audio package
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audioContext, err = audio.NewContext(sampleRate)
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if err != nil {
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log.Fatal(err)
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}
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go func() {
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s, err := wav.Decode(audioContext, wavF)
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if err != nil {
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log.Fatal(err)
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return
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}
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seCh <- s
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close(seCh)
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}()
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go func() {
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s, err := vorbis.Decode(audioContext, oggF)
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if err != nil {
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log.Fatal(err)
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return
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}
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p, err := audioContext.NewPlayer(s)
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if err != nil {
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log.Fatal(err)
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return
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}
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musicCh <- &Player{
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audioPlayer: p,
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total: time.Second * time.Duration(s.Size()) / bytesPerSample / sampleRate,
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}
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close(musicCh)
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// TODO: Is this goroutine-safe?
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p.Play()
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}()
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if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Audio (Ebiten Demo)"); err != nil {
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log.Fatal(err)
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}
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if musicPlayer != nil {
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if err := musicPlayer.close(); err != nil {
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log.Fatal(err)
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}
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}
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}
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</code></pre>
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<footer>© 2014 Hajime Hoshi</footer>
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39
_docs/public/examples/font.content.html
Normal file
39
_docs/public/examples/font.content.html
Normal file
@ -0,0 +1,39 @@
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<!DOCTYPE html>
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<!--
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Copyright 2014 Hajime Hoshi
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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.
|
||||
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.
|
||||
-->
|
||||
<script>
|
||||
'use strict';
|
||||
window.addEventListener('load', function() {
|
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function isProduction() {
|
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var l = window.top.location;
|
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if (l.hash === '#_production') {
|
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return true;
|
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}
|
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if (l.hostname === 'localhost' || l.hostname === '127.0.0.1') {
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return false;
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}
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return true;
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}
|
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|
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var s = document.createElement('script');
|
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var src = 'font.js';
|
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if (isProduction()) {
|
||||
src = '//hajimehoshi.github.io/ebiten.pagestorage/master/' + src;
|
||||
}
|
||||
s.src = src;
|
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document.body.appendChild(s);
|
||||
});
|
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</script>
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134
_docs/public/examples/font.html
Normal file
134
_docs/public/examples/font.html
Normal file
@ -0,0 +1,134 @@
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<!DOCTYPE html>
|
||||
<!--
|
||||
Copyright 2014 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.
|
||||
-->
|
||||
<link rel="shortcut icon" href="../favicon.png" type="image/png" >
|
||||
<link rel="icon" href="../favicon.png" type="image/png" >
|
||||
<title>Ebiten example - font</title>
|
||||
<style>
|
||||
body {
|
||||
font-family: sans-serif;
|
||||
}
|
||||
iframe {
|
||||
border-color: #999;
|
||||
border-style: solid;
|
||||
border-width: 1px;
|
||||
overflow: hidden;
|
||||
}
|
||||
pre {
|
||||
background: #eee;
|
||||
padding: 1em;
|
||||
}
|
||||
</style>
|
||||
<nav><a href="..">Ebiten</a></nav>
|
||||
|
||||
<h1>Ebiten example - font</h1>
|
||||
<iframe src="font.content.html" width="640" height="480"></iframe>
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<pre><code>package main
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|
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import (
|
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"image"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
|
||||
"github.com/golang/freetype/truetype"
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
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"golang.org/x/image/font"
|
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"golang.org/x/image/math/fixed"
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)
|
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|
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const (
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screenWidth = 640
|
||||
screenHeight = 480
|
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)
|
||||
|
||||
var (
|
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textImage *ebiten.Image
|
||||
)
|
||||
|
||||
var text = []string{
|
||||
"The quick brown fox jumps over the lazy dog.",
|
||||
"",
|
||||
// A head part of a Japanese novel 山月記 (Sangetsuki)
|
||||
// See http://www.aozora.gr.jp/cards/000119/files/624_14544.html.
|
||||
"隴西の李徴は博学才穎、天宝の末年、",
|
||||
"若くして名を虎榜に連ね、",
|
||||
"ついで江南尉に補せられたが、",
|
||||
"性、狷介、自ら恃むところ頗厚く、",
|
||||
"賤吏に甘んずるを潔しとしなかった。",
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||||
}
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||||
|
||||
func parseFont() error {
|
||||
f, err := ebitenutil.OpenFile("_resources/fonts/mplus-1p-regular.ttf")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
b, err := ioutil.ReadAll(f)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
tt, err := truetype.Parse(b)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
w, h := textImage.Size()
|
||||
dst := image.NewRGBA(image.Rect(0, 0, w, h))
|
||||
const size = 24
|
||||
const dpi = 72
|
||||
d := &font.Drawer{
|
||||
Dst: dst,
|
||||
Src: image.White,
|
||||
Face: truetype.NewFace(tt, &truetype.Options{
|
||||
Size: size,
|
||||
DPI: dpi,
|
||||
Hinting: font.HintingFull,
|
||||
}),
|
||||
}
|
||||
dy := size * dpi / 72
|
||||
y := dy
|
||||
for _, s := range text {
|
||||
d.Dot = fixed.P(0, y)
|
||||
d.DrawString(s)
|
||||
y += dy
|
||||
}
|
||||
return textImage.ReplacePixels(dst.Pix)
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
if err := screen.DrawImage(textImage, &ebiten.DrawImageOptions{}); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
textImage, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := parseFont(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 1, "Font (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
<footer>© 2014 Hajime Hoshi</footer>
|
||||
39
_docs/public/examples/hsv.content.html
Normal file
39
_docs/public/examples/hsv.content.html
Normal file
@ -0,0 +1,39 @@
|
||||
<!DOCTYPE html>
|
||||
<!--
|
||||
Copyright 2014 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.
|
||||
-->
|
||||
<script>
|
||||
'use strict';
|
||||
window.addEventListener('load', function() {
|
||||
function isProduction() {
|
||||
var l = window.top.location;
|
||||
if (l.hash === '#_production') {
|
||||
return true;
|
||||
}
|
||||
if (l.hostname === 'localhost' || l.hostname === '127.0.0.1') {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
var s = document.createElement('script');
|
||||
var src = 'hsv.js';
|
||||
if (isProduction()) {
|
||||
src = '//hajimehoshi.github.io/ebiten.pagestorage/master/' + src;
|
||||
}
|
||||
s.src = src;
|
||||
document.body.appendChild(s);
|
||||
});
|
||||
</script>
|
||||
132
_docs/public/examples/hsv.html
Normal file
132
_docs/public/examples/hsv.html
Normal file
@ -0,0 +1,132 @@
|
||||
<!DOCTYPE html>
|
||||
<!--
|
||||
Copyright 2014 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.
|
||||
-->
|
||||
<link rel="shortcut icon" href="../favicon.png" type="image/png" >
|
||||
<link rel="icon" href="../favicon.png" type="image/png" >
|
||||
<title>Ebiten example - hsv</title>
|
||||
<style>
|
||||
body {
|
||||
font-family: sans-serif;
|
||||
}
|
||||
iframe {
|
||||
border-color: #999;
|
||||
border-style: solid;
|
||||
border-width: 1px;
|
||||
overflow: hidden;
|
||||
}
|
||||
pre {
|
||||
background: #eee;
|
||||
padding: 1em;
|
||||
}
|
||||
</style>
|
||||
<nav><a href="..">Ebiten</a></nav>
|
||||
|
||||
<h1>Ebiten example - hsv</h1>
|
||||
<iframe src="hsv.content.html" width="640" height="480"></iframe>
|
||||
<pre><code>package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
hueInt = 0
|
||||
saturationInt = 128
|
||||
valueInt = 128
|
||||
gophersImage *ebiten.Image
|
||||
)
|
||||
|
||||
func clamp(v, min, max int) int {
|
||||
if min > max {
|
||||
panic("min must <= max")
|
||||
}
|
||||
if v < min {
|
||||
return min
|
||||
}
|
||||
if max < v {
|
||||
return max
|
||||
}
|
||||
return v
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
if ebiten.IsKeyPressed(ebiten.KeyQ) {
|
||||
hueInt--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyW) {
|
||||
hueInt++
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyA) {
|
||||
saturationInt--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyS) {
|
||||
saturationInt++
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyZ) {
|
||||
valueInt--
|
||||
}
|
||||
if ebiten.IsKeyPressed(ebiten.KeyX) {
|
||||
valueInt++
|
||||
}
|
||||
hueInt = clamp(hueInt, -256, 256)
|
||||
saturationInt = clamp(saturationInt, 0, 256)
|
||||
valueInt = clamp(valueInt, 0, 256)
|
||||
|
||||
w, h := gophersImage.Size()
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(screenWidth-w)/2, float64(screenHeight-h)/2)
|
||||
hue := float64(hueInt) * 2 * math.Pi / 128
|
||||
saturation := float64(saturationInt) / 128
|
||||
value := float64(valueInt) / 128
|
||||
op.ColorM.ChangeHSV(hue, saturation, value)
|
||||
if err := screen.DrawImage(gophersImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
msg := fmt.Sprintf(`Hue: %0.2f [Q][W]
|
||||
Saturation: %0.2f [A][S]
|
||||
Value: %0.2f [Z][X]`, hue, saturation, value)
|
||||
if err := ebitenutil.DebugPrint(screen, msg); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "HSV (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
<footer>© 2014 Hajime Hoshi</footer>
|
||||
39
_docs/public/examples/masking.content.html
Normal file
39
_docs/public/examples/masking.content.html
Normal file
@ -0,0 +1,39 @@
|
||||
<!DOCTYPE html>
|
||||
<!--
|
||||
Copyright 2014 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.
|
||||
-->
|
||||
<script>
|
||||
'use strict';
|
||||
window.addEventListener('load', function() {
|
||||
function isProduction() {
|
||||
var l = window.top.location;
|
||||
if (l.hash === '#_production') {
|
||||
return true;
|
||||
}
|
||||
if (l.hostname === 'localhost' || l.hostname === '127.0.0.1') {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
var s = document.createElement('script');
|
||||
var src = 'masking.js';
|
||||
if (isProduction()) {
|
||||
src = '//hajimehoshi.github.io/ebiten.pagestorage/master/' + src;
|
||||
}
|
||||
s.src = src;
|
||||
document.body.appendChild(s);
|
||||
});
|
||||
</script>
|
||||
169
_docs/public/examples/masking.html
Normal file
169
_docs/public/examples/masking.html
Normal file
@ -0,0 +1,169 @@
|
||||
<!DOCTYPE html>
|
||||
<!--
|
||||
Copyright 2014 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.
|
||||
-->
|
||||
<link rel="shortcut icon" href="../favicon.png" type="image/png" >
|
||||
<link rel="icon" href="../favicon.png" type="image/png" >
|
||||
<title>Ebiten example - masking</title>
|
||||
<style>
|
||||
body {
|
||||
font-family: sans-serif;
|
||||
}
|
||||
iframe {
|
||||
border-color: #999;
|
||||
border-style: solid;
|
||||
border-width: 1px;
|
||||
overflow: hidden;
|
||||
}
|
||||
pre {
|
||||
background: #eee;
|
||||
padding: 1em;
|
||||
}
|
||||
</style>
|
||||
<nav><a href="..">Ebiten</a></nav>
|
||||
|
||||
<h1>Ebiten example - masking</h1>
|
||||
<iframe src="masking.content.html" width="640" height="480"></iframe>
|
||||
<pre><code>package main
|
||||
|
||||
import (
|
||||
"image"
|
||||
"image/color"
|
||||
_ "image/jpeg"
|
||||
"log"
|
||||
"math"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
)
|
||||
|
||||
var (
|
||||
gophersImage *ebiten.Image
|
||||
fiveyearsImage *ebiten.Image
|
||||
maskImage *ebiten.Image
|
||||
spotLightImage *ebiten.Image
|
||||
spotLightX = 0
|
||||
spotLightY = 0
|
||||
spotLightVX = 1
|
||||
spotLightVY = 1
|
||||
)
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
spotLightX += spotLightVX
|
||||
spotLightY += spotLightVY
|
||||
if spotLightX < 0 {
|
||||
spotLightX = -spotLightX
|
||||
spotLightVX = -spotLightVX
|
||||
}
|
||||
if spotLightY < 0 {
|
||||
spotLightY = -spotLightY
|
||||
spotLightVY = -spotLightVY
|
||||
}
|
||||
w, h := spotLightImage.Size()
|
||||
maxX, maxY := screenWidth-w, screenHeight-h
|
||||
if maxX < spotLightX {
|
||||
spotLightX = -spotLightX + 2*maxX
|
||||
spotLightVX = -spotLightVX
|
||||
}
|
||||
if maxY < spotLightY {
|
||||
spotLightY = -spotLightY + 2*maxY
|
||||
spotLightVY = -spotLightVY
|
||||
}
|
||||
|
||||
if err := maskImage.Clear(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
op.GeoM.Translate(float64(spotLightX), float64(spotLightY))
|
||||
if err := maskImage.DrawImage(spotLightImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
op = &ebiten.DrawImageOptions{}
|
||||
op.CompositeMode = ebiten.CompositeModeSourceOut
|
||||
if err := maskImage.DrawImage(fiveyearsImage, op); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := screen.Fill(color.RGBA{0x00, 0x00, 0x80, 0xff}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.DrawImage(gophersImage, &ebiten.DrawImageOptions{}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := screen.DrawImage(maskImage, &ebiten.DrawImageOptions{}); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func max(a, b int) int {
|
||||
if a < b {
|
||||
return b
|
||||
}
|
||||
return a
|
||||
}
|
||||
|
||||
func min(a, b int) int {
|
||||
if a < b {
|
||||
return a
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
gophersImage, _, err = ebitenutil.NewImageFromFile("_resources/images/gophers.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
fiveyearsImage, _, err = ebitenutil.NewImageFromFile("_resources/images/fiveyears.jpg", ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
maskImage, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
as := image.Point{128, 128}
|
||||
a := image.NewAlpha(image.Rectangle{image.ZP, as})
|
||||
for j := 0; j < as.Y; j++ {
|
||||
for i := 0; i < as.X; i++ {
|
||||
r := as.X / 2
|
||||
d := math.Sqrt(float64((i-r)*(i-r) + (j-r)*(j-r)))
|
||||
b := uint8(max(0, min(0xff, 3*0xff-int(d*3*0xff)/r)))
|
||||
a.SetAlpha(i, j, color.Alpha{b})
|
||||
}
|
||||
}
|
||||
spotLightImage, err = ebiten.NewImageFromImage(a, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Masking (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
<footer>© 2014 Hajime Hoshi</footer>
|
||||
39
_docs/public/examples/piano.content.html
Normal file
39
_docs/public/examples/piano.content.html
Normal file
@ -0,0 +1,39 @@
|
||||
<!DOCTYPE html>
|
||||
<!--
|
||||
Copyright 2014 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.
|
||||
-->
|
||||
<script>
|
||||
'use strict';
|
||||
window.addEventListener('load', function() {
|
||||
function isProduction() {
|
||||
var l = window.top.location;
|
||||
if (l.hash === '#_production') {
|
||||
return true;
|
||||
}
|
||||
if (l.hostname === 'localhost' || l.hostname === '127.0.0.1') {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
var s = document.createElement('script');
|
||||
var src = 'piano.js';
|
||||
if (isProduction()) {
|
||||
src = '//hajimehoshi.github.io/ebiten.pagestorage/master/' + src;
|
||||
}
|
||||
s.src = src;
|
||||
document.body.appendChild(s);
|
||||
});
|
||||
</script>
|
||||
261
_docs/public/examples/piano.html
Normal file
261
_docs/public/examples/piano.html
Normal file
@ -0,0 +1,261 @@
|
||||
<!DOCTYPE html>
|
||||
<!--
|
||||
Copyright 2014 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.
|
||||
-->
|
||||
<link rel="shortcut icon" href="../favicon.png" type="image/png" >
|
||||
<link rel="icon" href="../favicon.png" type="image/png" >
|
||||
<title>Ebiten example - piano</title>
|
||||
<style>
|
||||
body {
|
||||
font-family: sans-serif;
|
||||
}
|
||||
iframe {
|
||||
border-color: #999;
|
||||
border-style: solid;
|
||||
border-width: 1px;
|
||||
overflow: hidden;
|
||||
}
|
||||
pre {
|
||||
background: #eee;
|
||||
padding: 1em;
|
||||
}
|
||||
</style>
|
||||
<nav><a href="..">Ebiten</a></nav>
|
||||
|
||||
<h1>Ebiten example - piano</h1>
|
||||
<iframe src="piano.content.html" width="640" height="480"></iframe>
|
||||
<pre><code>package main
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"image/color"
|
||||
"log"
|
||||
"math"
|
||||
|
||||
"github.com/hajimehoshi/ebiten"
|
||||
"github.com/hajimehoshi/ebiten/ebitenutil"
|
||||
"github.com/hajimehoshi/ebiten/examples/common"
|
||||
"github.com/hajimehoshi/ebiten/exp/audio"
|
||||
)
|
||||
|
||||
const (
|
||||
screenWidth = 320
|
||||
screenHeight = 240
|
||||
sampleRate = 44100
|
||||
)
|
||||
|
||||
var audioContext *audio.Context
|
||||
|
||||
func init() {
|
||||
var err error
|
||||
audioContext, err = audio.NewContext(sampleRate)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
var pcm = make([]float64, 4*sampleRate)
|
||||
|
||||
const baseFreq = 220
|
||||
|
||||
func init() {
|
||||
s := float64(sampleRate)
|
||||
amp := []float64{1.0, 0.8, 0.6, 0.4, 0.2}
|
||||
x := []float64{4.0, 2.0, 1.0, 0.5, 0.25}
|
||||
for i := 0; i < len(pcm); i++ {
|
||||
v := 0.0
|
||||
twoPiF := 2.0 * math.Pi * baseFreq
|
||||
for j := 0; j < len(amp); j++ {
|
||||
a := amp[j] * math.Exp(-5*float64(i)/(x[j]*s))
|
||||
v += a * math.Sin(float64(i)*twoPiF*float64(j+1)/s)
|
||||
}
|
||||
pcm[i] = v / 5.0
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
noteCache = map[int][]byte{}
|
||||
)
|
||||
|
||||
func toBytes(l, r []int16) []byte {
|
||||
if len(l) != len(r) {
|
||||
panic("len(l) must equal to len(r)")
|
||||
}
|
||||
b := make([]byte, len(l)*4)
|
||||
for i, _ := range l {
|
||||
b[4*i] = byte(l[i])
|
||||
b[4*i+1] = byte(l[i] >> 8)
|
||||
b[4*i+2] = byte(r[i])
|
||||
b[4*i+3] = byte(r[i] >> 8)
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
type stream struct {
|
||||
*bytes.Reader
|
||||
}
|
||||
|
||||
func (s *stream) Close() error {
|
||||
s.Reader = nil
|
||||
return nil
|
||||
}
|
||||
|
||||
func addNote(freq float64, vol float64) error {
|
||||
f := int(freq)
|
||||
if n, ok := noteCache[f]; ok {
|
||||
p, err := audioContext.NewPlayer(&stream{bytes.NewReader(n)})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
p.Play()
|
||||
return nil
|
||||
}
|
||||
length := len(pcm) * baseFreq / f
|
||||
l := make([]int16, length)
|
||||
r := make([]int16, length)
|
||||
j := 0
|
||||
jj := 0
|
||||
for i := 0; i < len(l); i++ {
|
||||
p := pcm[j]
|
||||
l[i] = int16(p * vol * math.MaxInt16)
|
||||
r[i] = l[i]
|
||||
jj += f
|
||||
j = jj / baseFreq
|
||||
}
|
||||
n := toBytes(l, r)
|
||||
noteCache[f] = n
|
||||
p, err := audioContext.NewPlayer(&stream{bytes.NewReader(n)})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
p.Play()
|
||||
return nil
|
||||
}
|
||||
|
||||
var keys = []ebiten.Key{
|
||||
ebiten.KeyQ,
|
||||
ebiten.KeyA,
|
||||
ebiten.KeyW,
|
||||
ebiten.KeyS,
|
||||
ebiten.KeyD,
|
||||
ebiten.KeyR,
|
||||
ebiten.KeyF,
|
||||
ebiten.KeyT,
|
||||
ebiten.KeyG,
|
||||
ebiten.KeyH,
|
||||
ebiten.KeyU,
|
||||
ebiten.KeyJ,
|
||||
ebiten.KeyI,
|
||||
ebiten.KeyK,
|
||||
ebiten.KeyO,
|
||||
ebiten.KeyL,
|
||||
}
|
||||
|
||||
var keyStates = map[ebiten.Key]int{}
|
||||
|
||||
func init() {
|
||||
for _, key := range keys {
|
||||
keyStates[key] = 0
|
||||
}
|
||||
}
|
||||
|
||||
func updateInput() {
|
||||
for _, key := range keys {
|
||||
if !ebiten.IsKeyPressed(key) {
|
||||
keyStates[key] = 0
|
||||
continue
|
||||
}
|
||||
keyStates[key]++
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
imagePiano *ebiten.Image
|
||||
)
|
||||
|
||||
func init() {
|
||||
var err error
|
||||
imageEmpty, err := ebiten.NewImage(16, 16, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
imageEmpty.Fill(color.White)
|
||||
imagePiano, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
whiteKeys := []string{"A", "S", "D", "F", "G", "H", "J", "K", "L"}
|
||||
width := 24
|
||||
y := 48
|
||||
for i, k := range whiteKeys {
|
||||
x := i*width + 36
|
||||
height := 112
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
w, h := imageEmpty.Size()
|
||||
op.GeoM.Scale(float64(width-1)/float64(w), float64(height)/float64(h))
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
op.ColorM.Scale(1, 1, 1, 1)
|
||||
imagePiano.DrawImage(imageEmpty, op)
|
||||
common.ArcadeFont.DrawText(imagePiano, k, x+8, y+height-16, 1, color.Black)
|
||||
}
|
||||
|
||||
blackKeys := []string{"Q", "W", "", "R", "T", "", "U", "I", "O"}
|
||||
for i, k := range blackKeys {
|
||||
if k == "" {
|
||||
continue
|
||||
}
|
||||
x := i*width + 24
|
||||
height := 64
|
||||
op := &ebiten.DrawImageOptions{}
|
||||
w, h := imageEmpty.Size()
|
||||
op.GeoM.Scale(float64(width-1)/float64(w), float64(height)/float64(h))
|
||||
op.GeoM.Translate(float64(x), float64(y))
|
||||
op.ColorM.Scale(0, 0, 0, 1)
|
||||
imagePiano.DrawImage(imageEmpty, op)
|
||||
common.ArcadeFont.DrawText(imagePiano, k, x+8, y+height-16, 1, color.White)
|
||||
}
|
||||
}
|
||||
|
||||
func update(screen *ebiten.Image) error {
|
||||
if err := audioContext.Update(); err != nil {
|
||||
return err
|
||||
}
|
||||
updateInput()
|
||||
for i, key := range keys {
|
||||
if keyStates[key] != 1 {
|
||||
continue
|
||||
}
|
||||
if err := addNote(220*math.Exp2(float64(i-1)/12.0), 1.0); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
screen.Fill(color.RGBA{0x80, 0x80, 0xc0, 0xff})
|
||||
screen.DrawImage(imagePiano, nil)
|
||||
|
||||
ebitenutil.DebugPrint(screen, fmt.Sprintf("FPS: %0.2f", ebiten.CurrentFPS()))
|
||||
return nil
|
||||
}
|
||||
|
||||
func main() {
|
||||
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Piano (Ebiten Demo)"); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
</code></pre>
|
||||
|
||||
|
||||
<footer>© 2014 Hajime Hoshi</footer>
|
||||
@ -63,7 +63,7 @@ pre {
|
||||
|
||||
<h2>Example</h2>
|
||||
<p>
|
||||
<a href="examples/alphablending.html"><img src="images/examples/alphablending.png" width="320" height="240" alt="Ebiten example: alphablending" class="example"></a><a href="examples/hue.html"><img src="images/examples/hue.png" width="320" height="240" alt="Ebiten example: hue" class="example"></a><a href="examples/gamepad.html"><img src="images/examples/gamepad.png" width="320" height="240" alt="Ebiten example: gamepad" class="example"></a><a href="examples/keyboard.html"><img src="images/examples/keyboard.png" width="320" height="240" alt="Ebiten example: keyboard" class="example"></a><a href="examples/mosaic.html"><img src="images/examples/mosaic.png" width="320" height="240" alt="Ebiten example: mosaic" class="example"></a><a href="examples/noise.html"><img src="images/examples/noise.png" width="320" height="240" alt="Ebiten example: noise" class="example"></a><a href="examples/paint.html"><img src="images/examples/paint.png" width="320" height="240" alt="Ebiten example: paint" class="example"></a><a href="examples/perspective.html"><img src="images/examples/perspective.png" width="320" height="240" alt="Ebiten example: perspective" class="example"></a><a href="examples/rotate.html"><img src="images/examples/rotate.png" width="320" height="240" alt="Ebiten example: rotate" class="example"></a><a href="examples/sprites.html"><img src="images/examples/sprites.png" width="320" height="240" alt="Ebiten example: sprites" class="example"></a><a href="examples/blocks.html"><img src="images/examples/blocks.png" width="256" height="240" alt="Ebiten example: blocks" class="example"></a>
|
||||
<a href="examples/alphablending.html"><img src="images/examples/alphablending.png" width="320" height="240" alt="Ebiten example: alphablending" class="example"></a><a href="examples/audio.html"><img src="images/examples/audio.png" width="320" height="240" alt="Ebiten example: audio" class="example"></a><a href="examples/font.html"><img src="images/examples/font.png" width="320" height="240" alt="Ebiten example: font" class="example"></a><a href="examples/hsv.html"><img src="images/examples/hsv.png" width="320" height="240" alt="Ebiten example: hsv" class="example"></a><a href="examples/hue.html"><img src="images/examples/hue.png" width="320" height="240" alt="Ebiten example: hue" class="example"></a><a href="examples/gamepad.html"><img src="images/examples/gamepad.png" width="320" height="240" alt="Ebiten example: gamepad" class="example"></a><a href="examples/keyboard.html"><img src="images/examples/keyboard.png" width="320" height="240" alt="Ebiten example: keyboard" class="example"></a><a href="examples/masking.html"><img src="images/examples/masking.png" width="320" height="240" alt="Ebiten example: masking" class="example"></a><a href="examples/mosaic.html"><img src="images/examples/mosaic.png" width="320" height="240" alt="Ebiten example: mosaic" class="example"></a><a href="examples/noise.html"><img src="images/examples/noise.png" width="320" height="240" alt="Ebiten example: noise" class="example"></a><a href="examples/paint.html"><img src="images/examples/paint.png" width="320" height="240" alt="Ebiten example: paint" class="example"></a><a href="examples/perspective.html"><img src="images/examples/perspective.png" width="320" height="240" alt="Ebiten example: perspective" class="example"></a><a href="examples/piano.html"><img src="images/examples/piano.png" width="320" height="240" alt="Ebiten example: piano" class="example"></a><a href="examples/rotate.html"><img src="images/examples/rotate.png" width="320" height="240" alt="Ebiten example: rotate" class="example"></a><a href="examples/sprites.html"><img src="images/examples/sprites.png" width="320" height="240" alt="Ebiten example: sprites" class="example"></a><a href="examples/blocks.html"><img src="images/examples/blocks.png" width="256" height="240" alt="Ebiten example: blocks" class="example"></a>
|
||||
</p>
|
||||
|
||||
<h2>Install on Mac OS X or Windows</h2>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user