openquell/game/select_scene.go

package game

import (
	"image/color"
	"openquell/assets"

	"github.com/ebitenui/ebitenui"
	"github.com/ebitenui/ebitenui/image"
	"github.com/ebitenui/ebitenui/widget"

	"github.com/hajimehoshi/ebiten/v2"
)

type SelectScene struct {
	Game     *Game
	Next     SceneName
	Whoami   SceneName
	UseCache bool
	Ui       *ebitenui.UI
}

func NewSelectScene(game *Game) Scene {
	scene := &SelectScene{Whoami: Select, Game: game, Next: Select}

	scene.SetupUI()

	return scene
}

func (scene *SelectScene) GetNext() SceneName {
	return scene.Next
}

func (scene *SelectScene) SetNext(next SceneName) {
	scene.Next = next
}

func (scene *SelectScene) Update() error {
	scene.Ui.Update()
	return nil
}

func (scene *SelectScene) Draw(screen *ebiten.Image) {
	scene.Ui.Draw(screen)
}

func (scene *SelectScene) SetupUI() {
	buttonImage, _ := loadButtonImage()

	btnContainer := widget.NewContainer(
		widget.ContainerOpts.Layout(widget.NewAnchorLayout()),
	)

	button := widget.NewButton(
		widget.ButtonOpts.WidgetOpts(
			widget.WidgetOpts.LayoutData(widget.AnchorLayoutData{
				HorizontalPosition: widget.AnchorLayoutPositionCenter,
				VerticalPosition:   widget.AnchorLayoutPositionCenter,
			}),
		),

		widget.ButtonOpts.Image(buttonImage),

		widget.ButtonOpts.Text("Start new Game", *assets.FontRenderer.FontNormal, &widget.ButtonTextColor{
			Idle: color.NRGBA{0xdf, 0xf4, 0xff, 0xff},
		}),

		widget.ButtonOpts.TextPadding(widget.Insets{
			Left:   30,
			Right:  30,
			Top:    5,
			Bottom: 5,
		}),

		widget.ButtonOpts.ClickedHandler(func(args *widget.ButtonClickedEventArgs) {
			scene.SetNext(Play)
		}),
	)

	btnContainer.AddChild(button)

	rootContainer := widget.NewContainer(
		widget.ContainerOpts.BackgroundImage(
			image.NewNineSlice(assets.Assets["background-transparent"], [3]int{0, 1, 639}, [3]int{0, 1, 479})),
		//widget.ContainerOpts.BackgroundImage(image.NewNineSliceColor(color.NRGBA{0x13, 0x1a, 0x22, 0xff})),
		//widget.ContainerOpts.BackgroundImage(image.NewNineSliceColor(color.NRGBA{0xff, 0x80, 0x00, 0x00})),
		widget.ContainerOpts.Layout(
			widget.NewStackedLayout(
				widget.StackedLayoutOpts.Padding(
					widget.NewInsetsSimple(25)))),
	)

	rootContainer.AddChild(btnContainer)

	scene.Ui = &ebitenui.UI{
		Container: rootContainer,
	}
}

func loadButtonImage() (*widget.ButtonImage, error) {
	idle := image.NewNineSliceColor(color.NRGBA{R: 170, G: 170, B: 180, A: 255})

	hover := image.NewNineSliceColor(color.NRGBA{R: 130, G: 130, B: 150, A: 255})

	pressed := image.NewNineSliceColor(color.NRGBA{R: 100, G: 100, B: 120, A: 255})

	return &widget.ButtonImage{
		Idle:    idle,
		Hover:   hover,
		Pressed: pressed,
	}, nil
}