lots changes:

- renamed scene files
- fixed options back using scene.Prev
- fixed initial zooming (finally)
- fixed reset zoom (key r)
- fixed initial size, now works with state loading as well

options.go

@@ -0,0 +1,126 @@
+package main
+
+import (
+	"image/color"
+
+	"github.com/ebitenui/ebitenui"
+	"github.com/ebitenui/ebitenui/widget"
+	"github.com/hajimehoshi/ebiten/v2"
+	"github.com/hajimehoshi/ebiten/v2/inpututil"
+)
+
+type SceneOptions struct {
+	Game      *Game
+	Config    *Config
+	Next      SceneName
+	Prev      SceneName
+	Whoami    SceneName
+	Ui        *ebitenui.UI
+	FontColor color.RGBA
+}
+
+func NewOptionsScene(game *Game, config *Config) Scene {
+	scene := &SceneOptions{
+		Whoami:    Options,
+		Game:      game,
+		Next:      Options,
+		Config:    config,
+		FontColor: color.RGBA{255, 30, 30, 0xff},
+	}
+
+	scene.Init()
+
+	return scene
+}
+
+func (scene *SceneOptions) GetNext() SceneName {
+	return scene.Next
+}
+
+func (scene *SceneOptions) SetPrevious(prev SceneName) {
+	scene.Prev = prev
+}
+
+func (scene *SceneOptions) ResetNext() {
+	scene.Next = scene.Whoami
+}
+
+func (scene *SceneOptions) SetNext(next SceneName) {
+	scene.Next = next
+}
+
+func (scene *SceneOptions) IsPrimary() bool {
+	return false
+}
+
+func (scene *SceneOptions) Update() error {
+	scene.Ui.Update()
+
+	if inpututil.IsKeyJustPressed(ebiten.KeyEscape) || inpututil.IsKeyJustPressed(ebiten.KeyQ) {
+		scene.SetNext(Play)
+	}
+
+	return nil
+
+}
+
+func (scene *SceneOptions) Draw(screen *ebiten.Image) {
+	scene.Ui.Draw(screen)
+}
+
+func (scene *SceneOptions) SetInitialValue(w *widget.LabeledCheckbox, value bool) {
+	var intval int
+	if value {
+		intval = 1
+	}
+
+	w.SetState(
+		widget.WidgetState(intval),
+	)
+}
+
+func (scene *SceneOptions) Init() {
+	rowContainer := NewRowContainer("Options")
+
+	pause := NewCheckbox("Pause",
+		func(args *widget.CheckboxChangedEventArgs) {
+			scene.Config.TogglePaused()
+		})
+
+	debugging := NewCheckbox("Debugging",
+		func(args *widget.CheckboxChangedEventArgs) {
+			scene.Config.ToggleDebugging()
+		})
+	scene.SetInitialValue(debugging, scene.Config.Debug)
+
+	invert := NewCheckbox("Invert",
+		func(args *widget.CheckboxChangedEventArgs) {
+			scene.Config.Invert = true
+		})
+	scene.SetInitialValue(invert, scene.Config.Invert)
+
+	gridlines := NewCheckbox("Show grid lines",
+		func(args *widget.CheckboxChangedEventArgs) {
+			scene.Config.ToggleGridlines()
+		})
+	scene.SetInitialValue(gridlines, scene.Config.ShowGrid)
+
+	separator := NewSeparator(3)
+
+	cancel := NewMenuButton("Close",
+		func(args *widget.ButtonClickedEventArgs) {
+			scene.SetNext(scene.Prev)
+		})
+
+	rowContainer.AddChild(pause)
+	rowContainer.AddChild(debugging)
+	rowContainer.AddChild(invert)
+	rowContainer.AddChild(gridlines)
+	rowContainer.AddChild(separator)
+	rowContainer.AddChild(cancel)
+
+	scene.Ui = &ebitenui.UI{
+		Container: rowContainer.Container(),
+	}
+
+}