gameLibTests/Ebiten/VN/main.go

154 lines
3.3 KiB
Go

package main
import (
"fmt"
"github.com/golang/freetype/truetype"
"golang.org/x/image/font"
"image/color"
_ "image/jpeg"
"io/ioutil"
"log"
"strings"
"time"
"github.com/hajimehoshi/ebiten"
"github.com/hajimehoshi/ebiten/audio"
"github.com/hajimehoshi/ebiten/audio/mp3"
"github.com/hajimehoshi/ebiten/ebitenutil"
"github.com/hajimehoshi/ebiten/text"
)
const (
screenWidth = 640
screenHeight = 480
sampleRate = 44100
)
type dialogue struct {
Speaker character
Text string
}
type character struct {
Name string
Color color.RGBA
}
func check(err error) {
if err != nil {
log.Fatal(err)
}
}
var (
m = character{`Me`, color.RGBA{200, 200, 255, 255}}
s = character{`Sylvie`, color.RGBA{200, 255, 200, 255}}
d = character{``, color.RGBA{0, 255, 0, 0}}
messages = []dialogue{
{d, `playSong ../../Resources/Hisoku.mp3`},
{s, `Hi there! How was class?`},
{m, `Good...`},
{d, `I can't bring myself to admit that it all went in one ear and out the other.`},
{s, `Are you going home now? Wanna walk back with me?`},
{d, `playSong ../../Resources/Departures.mp3`},
{m, `Sure!`},
}
mplusNormalFont font.Face
line = 0
bg *ebiten.Image
audioContext *audio.Context
audioPlayer *audio.Player
songSize int64
playingMusic = false
songDuration time.Duration
)
func playSong(path string) {
var err error
if playingMusic {
audioPlayer.Close()
}
f, err := ebitenutil.OpenFile(path)
check(err)
d, err := mp3.Decode(audioContext, f)
check(err)
audioPlayer, err = audio.NewPlayer(audioContext, d)
check(err)
songSize = d.Size()
audioPlayer.Play()
playingMusic = true
songDuration = time.Second * time.Duration(songSize) / 4 / sampleRate
}
func init() {
f, err := ebitenutil.OpenFile("../../Resources/mplus-1p-regular.ttf")
check(err)
defer f.Close()
b, err := ioutil.ReadAll(f)
check(err)
tt, err := truetype.Parse(b)
check(err)
const dpi = 72
mplusNormalFont = truetype.NewFace(tt, &truetype.Options{
Size: 24,
DPI: dpi,
Hinting: font.HintingFull,
})
audioContext, err = audio.NewContext(sampleRate)
check(err)
}
func update(screen *ebiten.Image) error {
if ebiten.IsRunningSlowly() {
return nil
}
action := strings.Split(messages[line].Text, " ")
for _, v := range ebiten.InputChars() {
if v == 32 {
if line+1 != len(messages) {
line++
}
}
}
action = strings.Split(messages[line].Text, " ")
if action[0] == "playSong" {
if line+1 != len(messages) {
playSong(action[1])
line++
}
}
if playingMusic {
if int(audioPlayer.Current().Seconds()) == int(songDuration.Seconds()) {
audioPlayer.Seek(0)
}
}
msg := fmt.Sprintf("FPS: %0.2f", ebiten.CurrentFPS())
const x = 20
op := &ebiten.DrawImageOptions{}
screen.DrawImage(bg, op)
ebitenutil.DrawRect(screen, 30, 350, screenWidth-60, 100, color.RGBA{128, 128, 128, 200})
text.Draw(screen, msg, mplusNormalFont, x, 40, color.White)
text.Draw(screen, messages[line].Speaker.Name, mplusNormalFont, 50, 370, messages[line].Speaker.Color)
text.Draw(screen, messages[line].Text, mplusNormalFont, 50, 400, color.White)
return nil
}
func main() {
var err error
bg, _, err = ebitenutil.NewImageFromFile("../../Resources/bg.jpg", ebiten.FilterNearest)
check(err)
if err := ebiten.Run(update, screenWidth, screenHeight, 1, "Font (Ebiten Demo)"); err != nil {
log.Fatal(err)
}
}