kibodo/demos/kibodo/game/game.go

package game

import (
	"fmt"
	"image"

	"github.com/hajimehoshi/ebiten/v2"
	"github.com/hajimehoshi/ebiten/v2/ebitenutil"
)
import "code.rocketnine.space/tslocum/kibodo"

type game struct {
	w, h int

	k *kibodo.Keyboard

	userInput []byte

	op *ebiten.DrawImageOptions
}

// NewDemoGame returns a new kibodo demo game.
func NewDemoGame() *game {
	k := kibodo.NewKeyboard()
	k.SetAllowUserHide(true)
	k.SetPassThroughPhysicalInput(true)
	k.SetKeys(kibodo.KeysQWERTY)

	g := &game{
		k: k,
		op: &ebiten.DrawImageOptions{
			Filter: ebiten.FilterNearest,
		},
	}

	ch := make(chan *kibodo.Input, 10)
	k.Show(ch)

	go func() {
		for input := range ch {
			if input.Rune > 0 {
				g.userInput = append(g.userInput, []byte(string(input.Rune))...)
				continue
			}
			g.userInput = append(g.userInput, []byte("<"+input.Key.String()+">")...)
		}
		g.userInput = []byte("(Hidden, click to show)")
	}()

	return g
}

func (g *game) Layout(outsideWidth, outsideHeight int) (int, int) {
	s := ebiten.DeviceScaleFactor()
	outsideWidth, outsideHeight = int(float64(outsideWidth)*s), int(float64(outsideHeight)*s)
	if g.w == outsideWidth && g.h == outsideHeight {
		return outsideWidth, outsideHeight
	}

	g.w, g.h = outsideWidth, outsideHeight

	sizeH := 200
	g.k.SetRect(0, sizeH, g.w, g.h-sizeH)

	return outsideWidth, outsideHeight
}

func (g *game) Update() error {
	return g.k.Update()
}

func (g *game) Draw(screen *ebiten.Image) {
	g.k.Draw(screen)

	debugBox := image.NewRGBA(image.Rect(10, 20, 200, 200))
	debugImg := ebiten.NewImageFromImage(debugBox)
	ebitenutil.DebugPrint(debugImg, fmt.Sprintf("FPS %0.0f - TPS %0.0f\n\n%s", ebiten.CurrentFPS(), ebiten.CurrentTPS(), g.userInput))
	g.op.GeoM.Reset()
	g.op.GeoM.Translate(3, 0)
	g.op.GeoM.Scale(2, 2)
	screen.DrawImage(debugImg, g.op)
}