Game resumes previous speed after load.

Window location is passed to new renderer.

animation.go

@@ -1,57 +0,0 @@
-package tins2020
-
-import "time"
-
-type Animation struct {
-	active     bool
-	start      time.Time
-	interval   time.Duration
-	lastUpdate time.Duration
-}
-
-func NewAnimation(interval time.Duration) Animation {
-	return Animation{
-		active:   true,
-		start:    time.Now(),
-		interval: interval,
-	}
-}
-
-func NewAnimationPtr(interval time.Duration) *Animation {
-	ani := NewAnimation(interval)
-	return &ani
-}
-
-func (a *Animation) Animate() bool {
-	since := time.Since(a.start)
-	if !a.active || since < a.lastUpdate+a.interval {
-		return false
-	}
-	a.lastUpdate += a.interval
-	return true
-}
-
-func (a *Animation) AnimateFn(fn func()) {
-	since := time.Since(a.start)
-	for a.active && since > a.lastUpdate+a.interval {
-		fn()
-		a.lastUpdate += a.interval
-	}
-}
-
-func (a *Animation) Pause() {
-	a.active = false
-}
-
-func (a *Animation) Run() {
-	if a.active {
-		return
-	}
-	a.active = true
-	a.start = time.Now()
-	a.lastUpdate = 0
-}
-
-func (a *Animation) SetInterval(interval time.Duration) {
-	a.interval = interval
-}

buttonbar.go

@@ -1,59 +0,0 @@
-package tins2020
-
-import "github.com/veandco/go-sdl2/sdl"
-
-type ButtonBar struct {
-	Container
-
-	Background   sdl.Color
-	ButtonLength int32
-	Orientation  Orientation
-	Buttons      []Control
-}
-
-const buttonBarWidth = 96
-
-func (b *ButtonBar) Init(ctx *Context) error {
-	for i := range b.Buttons {
-		b.AddChild(b.Buttons[i])
-	}
-	return b.Container.Init(ctx)
-}
-
-func (b *ButtonBar) Arrange(ctx *Context, bounds Rectangle) {
-	b.Container.Arrange(ctx, bounds)
-	length := b.ButtonLength
-	switch b.Orientation {
-	case OrientationHorizontal:
-		if length == 0 {
-			length = bounds.H
-		}
-		offset := bounds.X
-		for i := range b.Buttons {
-			b.Buttons[i].Arrange(ctx, Rect(offset, bounds.Y, length, bounds.H))
-			offset += length
-		}
-	default:
-		if length == 0 {
-			length = bounds.W
-		}
-		offset := bounds.Y
-		for i := range b.Buttons {
-			b.Buttons[i].Arrange(ctx, Rect(bounds.X, offset, bounds.W, length))
-			offset += length
-		}
-	}
-}
-
-func (b *ButtonBar) Render(ctx *Context) {
-	SetDrawColor(ctx.Renderer, b.Background)
-	ctx.Renderer.FillRect(b.Bounds.SDLPtr())
-	b.Container.Render(ctx)
-}
-
-type Orientation int
-
-const (
-	OrientationVertical Orientation = iota
-	OrientationHorizontal
-)

buyflowerbutton.go

@@ -2,29 +2,68 @@ package tins2020
 
 import (
 	"fmt"
+	"image/color"
 	"time"
 
-	"github.com/veandco/go-sdl2/sdl"
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg"
+	"opslag.de/schobers/zntg/ui"
 )
 
+type TextureCache struct {
+	Value ui.Texture
+}
+
+func (c *TextureCache) Height() float32 {
+	if c.Value == nil {
+		return 0
+	}
+	return c.Value.Height()
+}
+
+func (c *TextureCache) Update(update func() (ui.Texture, error)) error {
+	texture, err := update()
+	if err != nil {
+		return err
+	}
+	if c.Value != nil {
+		c.Value.Destroy()
+	}
+	c.Value = texture
+	return nil
+}
+
+func (c *TextureCache) Width() float32 {
+	if c.Value == nil {
+		return 0
+	}
+	return c.Value.Width()
+}
+
+func textUpdate(render ui.Renderer, font ui.Font, color color.Color, text string) func() (ui.Texture, error) {
+	return func() (ui.Texture, error) { return render.TextTexture(font, color, text) }
+}
+
 type BuyFlowerButton struct {
 	IconButton
 
+	IconDisabled string
 	FlowerID     string
 	Flower       FlowerDescriptor
 
-	hoverAnimation *Animation
+	upToDate       bool
-	hoverOffset    int32
+	hoverAnimation zntg.Animation
-	hoverTexture   *Texture
+	hoverOffset    float32
-	priceTexture   *Texture
+	hoverTexture   TextureCache
+	priceTexture   TextureCache
 }
 
-func NewBuyFlowerButton(icon, iconDisabled, flowerID string, flower FlowerDescriptor, onClick EventContextFn) *BuyFlowerButton {
+func NewBuyFlowerButton(icon, iconDisabled, flowerID string, flower FlowerDescriptor, click ui.EventEmptyFn) *BuyFlowerButton {
 	return &BuyFlowerButton{
-		IconButton: *NewIconButtonConfigure(icon, onClick, func(b *IconButton) {
+		IconButton: *NewIconButtonConfigure(icon, click, func(b *IconButton) {
-			b.IconDisabled = iconDisabled
+			b.Disabled = !flower.Unlocked
-			b.IsDisabled = !flower.Unlocked
 		}),
+		IconDisabled: iconDisabled,
 		FlowerID:     flowerID,
 		Flower:       flower,
 	}
@@ -32,7 +71,7 @@ func NewBuyFlowerButton(icon, iconDisabled, flowerID string, flower FlowerDescri
 
 func (b *BuyFlowerButton) animate() {
 	b.hoverOffset++
-	if b.hoverOffset > b.hoverTexture.Size().X+b.Bounds.W {
+	if b.hoverOffset > b.hoverTexture.Width()+b.Bounds().Dx() {
 		b.hoverOffset = 0
 	}
 }
@@ -44,75 +83,69 @@ func (b *BuyFlowerButton) fmtTooltipText() string {
 	return fmt.Sprintf("%s - %s - %s", FmtMoney(b.Flower.BuyPrice), b.Flower.Name, b.Flower.Description)
 }
 
-func (b *BuyFlowerButton) updateTexts(ctx *Context) error {
+func (b *BuyFlowerButton) updateTexts(ctx ui.Context) error {
+	if b.upToDate {
+		return nil
+	}
 	text := b.fmtTooltipText()
-	font := ctx.Fonts.Font("small")
+	font := ctx.Fonts().Font("small")
-	color := MustHexColor("#ffffff")
+	color := zntg.MustHexColor("#FFFFFF")
-	texture, err := font.Render(ctx.Renderer, text, color)
+	if err := b.hoverTexture.Update(textUpdate(ctx.Renderer(), font, color, text)); err != nil {
-	if err != nil {
 		return err
 	}
-	if b.hoverTexture != nil {
+	if err := b.priceTexture.Update(textUpdate(ctx.Renderer(), font, color, FmtMoney(b.Flower.BuyPrice))); err != nil {
-		b.hoverTexture.Destroy()
-	}
-	b.hoverTexture = texture
-	texture, err = font.Render(ctx.Renderer, FmtMoney(b.Flower.BuyPrice), color)
-	if err != nil {
 		return err
 	}
-	if b.priceTexture != nil {
+	b.upToDate = true
-		b.priceTexture.Destroy()
-	}
-	b.priceTexture = texture
 	return nil
 }
 
-func (b *BuyFlowerButton) Init(ctx *Context) error {
+func (b *BuyFlowerButton) Handle(ctx ui.Context, e ui.Event) bool {
-	return b.updateTexts(ctx)
+	b.updateTexts(ctx)
-}
+	b.IconButton.Handle(ctx, e)
-
+	if b.IsOver() && !b.hoverAnimation.IsActive() {
-func (b *BuyFlowerButton) Handle(ctx *Context, event sdl.Event) bool {
+		b.hoverAnimation.Interval = 10 * time.Millisecond
-	if b.IconButton.Handle(ctx, event) {
+		b.hoverAnimation.Start()
-		return true
+		b.hoverOffset = b.priceTexture.Width()
-	}
+	} else if !b.IsOver() {
-	if b.IsMouseOver && b.hoverAnimation == nil {
+		b.hoverAnimation.Pause()
-		b.hoverAnimation = NewAnimationPtr(10 * time.Millisecond)
-		b.hoverOffset = b.priceTexture.Size().X
-	} else if !b.IsMouseOver {
-		b.hoverAnimation = nil
 	}
 	return false
 }
 
-func (b *BuyFlowerButton) Render(ctx *Context) {
+func (b *BuyFlowerButton) Render(ctx ui.Context) {
-	iconTexture := b.activeTexture(ctx)
-
-	pos := Pt(b.Bounds.X, b.Bounds.Y)
-	iconTexture.CopyResize(ctx.Renderer, Rect(pos.X, pos.Y-60, b.Bounds.W, 120))
-	if (b.IsMouseOver && !b.IsDisabled) || b.IsActive {
-		SetDrawColor(ctx.Renderer, TransparentWhite)
-		ctx.Renderer.FillRect(b.Bounds.SDLPtr())
-	}
-
-	if b.hoverAnimation != nil {
-		b.hoverAnimation.AnimateFn(b.animate)
-	}
-
-	if b.IsMouseOver {
-		left := b.Bounds.W - 8 - b.hoverOffset
-		top := pos.Y + b.Bounds.H - 20
-		if left < 0 {
-			part := RectAbs(-left, 0, b.hoverTexture.Size().X, b.hoverTexture.Size().Y)
-			b.hoverTexture.CopyPart(ctx.Renderer, part, Pt(pos.X, top))
-		} else {
-			b.hoverTexture.Copy(ctx.Renderer, Pt(pos.X+left, top))
-		}
-	} else {
-		b.priceTexture.Copy(ctx.Renderer, Pt(pos.X+b.Bounds.W-8-b.priceTexture.Size().X, pos.Y+b.Bounds.H-20))
-	}
-}
-
-func (b *BuyFlowerButton) Update(ctx *Context, desc FlowerDescriptor) {
-	b.Flower = desc
 	b.updateTexts(ctx)
+
+	bounds := b.Bounds()
+	pos := bounds.Min
+
+	icon := ctx.Textures().Texture(b.Icon)
+	if !b.Flower.Unlocked {
+		disabled := ctx.Textures().Texture(b.IconDisabled)
+		if disabled != nil {
+			icon = disabled
+		}
+	}
+	ctx.Renderer().DrawTexture(icon, geom.RectRelF32(pos.X, pos.Y-60, bounds.Dx(), 120))
+	b.RenderActive(ctx)
+
+	b.hoverAnimation.AnimateFn(b.animate)
+
+	if b.IsOver() {
+		left := bounds.Dx() - 8 - b.hoverOffset
+		top := pos.Y + bounds.Dy() - 20
+		if left < 0 {
+			part := geom.RectF32(-left, 0, b.hoverTexture.Width(), b.hoverTexture.Height())
+			ctx.Renderer().DrawTexturePointOptions(b.hoverTexture.Value, geom.PtF32(pos.X, top), ui.DrawOptions{Source: &part})
+		} else {
+			ctx.Renderer().DrawTexturePoint(b.hoverTexture.Value, geom.PtF32(pos.X+left, top))
+		}
+	} else {
+		ctx.Renderer().DrawTexturePoint(b.priceTexture.Value, geom.PtF32(pos.X+bounds.Dx()-8-b.priceTexture.Width(), pos.Y+bounds.Dy()-20))
+	}
+}
+
+func (b *BuyFlowerButton) Update(desc FlowerDescriptor) {
+	b.Flower = desc
+	b.upToDate = false
 }

cmd/tins2020/tins2020.go

@@ -2,11 +2,21 @@ package main
 
 import (
 	"flag"
+	"image/color"
 	"log"
 
+	"opslag.de/schobers/fs/ricefs"
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg"
+	"opslag.de/schobers/zntg/addons/res"
+	"opslag.de/schobers/zntg/play"
+	"opslag.de/schobers/zntg/ui"
+
+	_ "opslag.de/schobers/zntg/sdlui" // rendering backend
+	// _ "opslag.de/schobers/zntg/allg5ui" // rendering backend
+
 	rice "github.com/GeertJohan/go.rice"
 	"github.com/veandco/go-sdl2/sdl"
-	"github.com/veandco/go-sdl2/ttf"
 	"opslag.de/schobers/tins2020"
 )
 
@@ -20,10 +30,91 @@ func main() {
 	}
 }
 
-func logSDLVersion() {
+func openResources(box *rice.Box) ui.Resources {
-	var version sdl.Version
+	fs := ricefs.NewFs(box)
-	sdl.GetVersion(&version)
+	resources, _ := res.NewAferoFallbackResources(`res`, fs, `botanim`)
-	log.Printf("SDL version: %d.%d.%d", version.Major, version.Minor, version.Patch)
+	return resources
+}
+
+type app struct {
+	ui.Proxy
+
+	settings *tins2020.Settings
+	game     *tins2020.Game
+	dialogs  *tins2020.Dialogs
+}
+
+type fontDescriptor struct {
+	Name string
+	Path string
+	Size int
+}
+
+func (a *app) loadFonts(ctx ui.Context, descriptors ...fontDescriptor) error {
+	fonts := ctx.Fonts()
+	for _, desc := range descriptors {
+		_, err := fonts.CreateFontPath(desc.Name, desc.Path, desc.Size)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (a *app) Init(ctx ui.Context) error {
+	if err := a.loadFonts(ctx,
+		fontDescriptor{"balance", "fonts/OpenSans-Bold.ttf", 40},
+		fontDescriptor{"debug", "fonts/FiraMono-Regular.ttf", 12},
+		fontDescriptor{"default", "fonts/OpenSans-Regular.ttf", 14},
+		fontDescriptor{"small", "fonts/OpenSans-Regular.ttf", 12},
+		fontDescriptor{"title", "fonts/OpenSans-Bold.ttf", 40},
+	); err != nil {
+		return err
+	}
+
+	textureLoader := tins2020.NewResourceLoader()
+	textures := ctx.Textures()
+	if err := textureLoader.LoadFromFile(ctx.Resources(), "textures.txt", func(name, content string) error {
+		_, err := textures.CreateTexturePath(name, content, true)
+		return err
+	}); err != nil {
+		return err
+	}
+
+	ctx.Overlays().AddOnTop("fps", &play.FPS{}, false)
+
+	content := tins2020.NewContent(a.dialogs)
+	content.AddChild(tins2020.NewTerrainRenderer(a.game))
+	controls := tins2020.NewGameControls(a.game, a.dialogs)
+	content.AddChild(controls)
+	a.Content = content
+
+	a.dialogs.Init(ctx)
+	a.game.Reset(ctx)
+	controls.Init(ctx)
+	a.dialogs.ShowIntro(ctx)
+
+	return nil
+}
+
+func (a *app) Handle(ctx ui.Context, e ui.Event) bool {
+	switch e := e.(type) {
+	case *ui.DisplayMoveEvent:
+		location := e.Bounds.Min.ToInt()
+		a.settings.Window.Location = &location
+	case *ui.DisplayResizeEvent:
+		a.Arrange(ctx, e.Bounds, geom.ZeroPtF32, nil)
+		size := e.Bounds.Size().ToInt()
+		a.settings.Window.Size = &size
+	}
+	return a.Proxy.Handle(ctx, e)
+}
+
+func (a *app) Render(ctx ui.Context) {
+	a.game.Update()
+
+	ctx.Renderer().Clear(color.White)
+	a.Proxy.Render(ctx)
 }
 
 func run() error {
@@ -31,135 +122,66 @@ func run() error {
 	flag.BoolVar(&extract, "extract-resources", false, "extracts all resources to the current working directory")
 	flag.Parse()
 
-	ctx, err := tins2020.NewContext(rice.MustFindBox("res"))
+	box := rice.MustFindBox(`res`)
-	if err != nil {
-		return err
-	}
-	defer ctx.Destroy()
-
 	if extract {
-		return copyBoxToDisk(ctx.Resources.Box())
+		return copyBoxToDisk(box)
+	}
+	res := openResources(box)
+
+	ptPtr := func(x, y int) *geom.Point {
+		p := geom.Pt(x, y)
+		return &p
 	}
 
-	if err := sdl.Init(sdl.INIT_EVERYTHING); err != nil {
+	settings := &tins2020.Settings{}
+	err := settings.Init()
+	if err != nil {
 		return err
 	}
-	defer sdl.Quit()
+	defer settings.Store()
 
-	logSDLVersion()
+	if settings.Window.Location == nil {
-
+		settings.Window.Location = ptPtr(sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED)
-	if err := ttf.Init(); err != nil {
-		return err
 	}
-	defer ttf.Quit()
+	if settings.Window.Size == nil {
-
+		settings.Window.Size = ptPtr(800, 600)
-	if ctx.Settings.Window.Location == nil {
-		ctx.Settings.Window.Location = tins2020.PtPtr(sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED)
 	}
-	if ctx.Settings.Window.Size == nil {
+	if settings.Window.VSync == nil {
-		ctx.Settings.Window.Size = tins2020.PtPtr(800, 600)
-	}
-	if ctx.Settings.Window.VSync == nil {
 		vsync := true
-		ctx.Settings.Window.VSync = &vsync
+		settings.Window.VSync = &vsync
 	}
-
+	renderer, err := ui.NewRenderer("Botanim - TINS 2020", settings.Window.Size.X, settings.Window.Size.Y, ui.NewRendererOptions{
-	if *ctx.Settings.Window.VSync {
+		Location:  &geom.PointF32{X: float32(settings.Window.Location.X), Y: float32(settings.Window.Location.Y)},
-		sdl.SetHint(sdl.HINT_RENDER_VSYNC, "1")
+		Resizable: true,
-	}
+		VSync:     *settings.Window.VSync,
-	sdl.SetHint(sdl.HINT_RENDER_SCALE_QUALITY, "1")
-	window, err := sdl.CreateWindow("Botanim - TINS 2020",
-		ctx.Settings.Window.Location.X, ctx.Settings.Window.Location.Y,
-		ctx.Settings.Window.Size.X, ctx.Settings.Window.Size.Y,
-		sdl.WINDOW_SHOWN|sdl.WINDOW_RESIZABLE)
-	if err != nil {
-		return err
-	}
-	defer window.Destroy()
-
-	renderer, err := sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
-	if err != nil {
-		return err
-	}
-	defer renderer.Destroy()
-
-	ctx.Init(renderer)
-
-	err = ctx.Fonts.LoadDesc(
-		tins2020.FontDescriptor{Name: "balance", Path: "fonts/OpenSans-Bold.ttf", Size: 40},
-		tins2020.FontDescriptor{Name: "debug", Path: "fonts/FiraMono-Regular.ttf", Size: 12},
-		tins2020.FontDescriptor{Name: "default", Path: "fonts/OpenSans-Regular.ttf", Size: 14},
-		tins2020.FontDescriptor{Name: "small", Path: "fonts/OpenSans-Regular.ttf", Size: 12},
-		tins2020.FontDescriptor{Name: "title", Path: "fonts/OpenSans-Bold.ttf", Size: 40},
-	)
-	if err != nil {
-		return err
-	}
-	textureLoader := tins2020.NewResourceLoader()
-	err = textureLoader.LoadFromFile(&ctx.Resources, "textures.txt", func(name, content string) error {
-		return ctx.Textures.Load(name, content)
 	})
 	if err != nil {
 		return err
 	}
+	defer renderer.Destroy()
+	renderer.SetResourceProvider(func() ui.Resources { return res })
 
 	game := tins2020.NewGame()
-
+	app := &app{
-	app := tins2020.NewContainer()
+		game:     game,
-
+		dialogs:  tins2020.NewDialogs(game),
-	overlays := tins2020.NewContainer()
+		settings: settings,
-	dialogs := tins2020.NewDialogs(game)
-
-	overlays.AddChild(dialogs)
-	overlays.AddChild(&tins2020.FPS{Show: &game.Debug})
-
-	content := tins2020.NewContent(dialogs)
-	content.AddChild(tins2020.NewTerrainRenderer(game))
-	content.AddChild(tins2020.NewGameControls(game, dialogs))
-
-	app.AddChild(content)
-	app.AddChild(overlays)
-
-	err = app.Init(ctx)
-	if err != nil {
-		return err
 	}
-	dialogs.ShowIntro(ctx)
+	style := ui.DefaultStyle()
-
+	style.Palette = &ui.Palette{
-	w, h := window.GetSize()
+		Background:      zntg.MustHexColor(`#356DAD`),
-	app.Arrange(ctx, tins2020.RectAbs(0, 0, w, h))
+		Disabled:        zntg.MustHexColor(`#DEDEDE`),
-
+		Primary:         zntg.MustHexColor(`#356DAD`),
-	for {
+		PrimaryDark:     zntg.MustHexColor(`#15569F`),
-		for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
+		PrimaryLight:    zntg.MustHexColor(`#ABCAED`),
-			switch e := event.(type) {
+		Secondary:       zntg.MustHexColor(`#4AC69A`),
-			case *sdl.QuitEvent:
+		SecondaryDark:   zntg.MustHexColor(`#0AA36D`),
-				ctx.Quit()
+		SecondaryLight:  zntg.MustHexColor(`#A6EED4`),
-				break
+		Text:            color.White,
-			case *sdl.WindowEvent:
+		TextOnPrimary:   color.White,
-				switch e.Event {
+		TextOnSecondary: color.White,
-				case sdl.WINDOWEVENT_MOVED:
+		TextNegative:    zntg.MustHexColor(`#F3590E`),
-					x, y := window.GetPosition()
+		TextPositive:    zntg.MustHexColor(`#65D80D`),
-					ctx.Settings.Window.Location = tins2020.PtPtr(x, y)
-				case sdl.WINDOWEVENT_SIZE_CHANGED:
-					w, h := window.GetSize()
-					app.Arrange(ctx, tins2020.RectAbs(0, 0, w, h))
-					ctx.Settings.Window.Size = tins2020.PtPtr(w, h)
 	}
-			case *sdl.MouseMotionEvent:
+	return ui.Run(renderer, style, app)
-				ctx.MousePosition = tins2020.Pt(e.X, e.Y)
-			}
-			app.Handle(ctx, event)
-		}
-		game.Update()
-
-		if ctx.ShouldQuit {
-			break
-		}
-
-		renderer.SetDrawColor(0, 0, 0, 255)
-		renderer.Clear()
-		app.Render(ctx)
-		renderer.Present()
-	}
-	return nil
 }

color.go

@@ -1,30 +0,0 @@
-package tins2020
-
-import (
-	"opslag.de/schobers/tins2020/img"
-
-	"github.com/veandco/go-sdl2/sdl"
-)
-
-var Black = sdl.Color{R: 0, G: 0, B: 0, A: 255}
-var Transparent = sdl.Color{R: 0, G: 0, B: 0, A: 0}
-var TransparentWhite = sdl.Color{R: 255, G: 255, B: 255, A: 31}
-var White = sdl.Color{R: 255, G: 255, B: 255, A: 255}
-
-func HexColor(s string) (sdl.Color, error) {
-	c, err := img.HexColor(s)
-	if err != nil {
-		return sdl.Color{}, err
-	}
-	return sdl.Color(c), nil
-}
-
-func MustHexColor(s string) sdl.Color { return sdl.Color(img.MustHexColor(s)) }
-
-func SetDrawColor(renderer *sdl.Renderer, color sdl.Color) {
-	renderer.SetDrawColor(color.R, color.G, color.B, color.A)
-}
-
-func SetDrawColorHex(renderer *sdl.Renderer, s string) {
-	SetDrawColor(renderer, MustHexColor(s))
-}

color_test.go

@@ -1,33 +0,0 @@
-package tins2020
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/veandco/go-sdl2/sdl"
-)
-
-func TestHexColor(t *testing.T) {
-	type test struct {
-		Hex      string
-		Success  bool
-		Expected sdl.Color
-	}
-	tests := []test{
-		test{Hex: "#AA3939", Success: true, Expected: sdl.Color{R: 170, G: 57, B: 57, A: 255}},
-		test{Hex: "AA3939", Success: true, Expected: sdl.Color{R: 170, G: 57, B: 57, A: 255}},
-		test{Hex: "#AA3939BB", Success: true, Expected: sdl.Color{R: 170, G: 57, B: 57, A: 187}},
-		test{Hex: "AG3939", Success: false, Expected: sdl.Color{}},
-		test{Hex: "AA3939A", Success: false, Expected: sdl.Color{}},
-		test{Hex: "AA39A", Success: false, Expected: sdl.Color{}},
-	}
-	for _, test := range tests {
-		color, err := HexColor(test.Hex)
-		if test.Success {
-			assert.Nil(t, err)
-			assert.Equal(t, color, test.Expected)
-		} else {
-			assert.NotNil(t, err)
-		}
-	}
-}

container.go

@@ -1,58 +0,0 @@
-package tins2020
-
-import (
-	"github.com/veandco/go-sdl2/sdl"
-)
-
-type Container struct {
-	ControlBase
-
-	Children []Control
-}
-
-func NewContainer() *Container {
-	return &Container{}
-}
-
-func (c *Container) AddChild(child Control) {
-	c.Children = append(c.Children, child)
-}
-
-func (c *Container) Arrange(ctx *Context, bounds Rectangle) {
-	c.ControlBase.Arrange(ctx, bounds)
-	for _, child := range c.Children {
-		child.Arrange(ctx, bounds)
-	}
-}
-
-func (c *Container) Handle(ctx *Context, event sdl.Event) bool {
-	if c.ControlBase.Handle(ctx, event) {
-		return true
-	}
-	for _, child := range c.Children {
-		if child.Handle(ctx, event) {
-			return true
-		}
-	}
-	return false
-}
-
-func (c *Container) Init(ctx *Context) error {
-	c.ControlBase.Init(ctx)
-
-	for _, child := range c.Children {
-		err := child.Init(ctx)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (c *Container) Render(ctx *Context) {
-	c.ControlBase.Render(ctx)
-
-	for _, child := range c.Children {
-		child.Render(ctx)
-	}
-}

content.go

@@ -1,28 +1,34 @@
 package tins2020
 
-import "github.com/veandco/go-sdl2/sdl"
+import (
+	"opslag.de/schobers/zntg/ui"
+)
 
 // Content shortcuts events when a dialog is opened.
 type Content struct {
-	Container
+	ui.Proxy
 
-	dialogOverlayed bool
+	content  ui.ContainerBase
+	shortcut bool
 }
 
 func NewContent(dialogs *Dialogs) *Content {
 	content := &Content{}
-	dialogs.DialogOpened().Register(func() {
+	content.Proxy.Content = &content.content
-		content.dialogOverlayed = true
+	dialogs.DialogOpened().AddHandlerEmpty(func(ui.Context) {
+		content.shortcut = true
 	})
-	dialogs.DialogClosed().Register(func() {
+	dialogs.DialogClosed().AddHandlerEmpty(func(ui.Context) {
-		content.dialogOverlayed = false
+		content.shortcut = false
 	})
 	return content
 }
 
-func (c *Content) Handle(ctx *Context, event sdl.Event) bool {
+func (c *Content) AddChild(child ui.Control) { c.content.AddChild(child) }
-	if c.dialogOverlayed {
+
+func (c *Content) Handle(ctx ui.Context, event ui.Event) bool {
+	if c.shortcut {
 		return false
 	}
-	return c.Container.Handle(ctx, event)
+	return c.Proxy.Handle(ctx, event)
 }

context.go

@@ -1,46 +0,0 @@
-package tins2020
-
-import (
-	rice "github.com/GeertJohan/go.rice"
-	"github.com/veandco/go-sdl2/sdl"
-)
-
-type Context struct {
-	Renderer      *sdl.Renderer
-	Fonts         Fonts
-	Resources     Resources
-	Textures      Textures
-	Settings      Settings
-	MousePosition Point
-	ShouldQuit    bool
-}
-
-func NewContext(res *rice.Box) (*Context, error) {
-	ctx := &Context{}
-	err := ctx.Settings.Init()
-	if err != nil {
-		return nil, err
-	}
-	err = ctx.Resources.Open(res)
-	if err != nil {
-		return nil, err
-	}
-	return ctx, nil
-}
-
-func (c *Context) Destroy() {
-	c.Fonts.Destroy()
-	c.Resources.Destroy()
-	c.Textures.Destroy()
-	c.Settings.Store()
-}
-
-func (c *Context) Init(renderer *sdl.Renderer) {
-	c.Renderer = renderer
-	c.Fonts.Init(c.Resources.Copy())
-	c.Textures.Init(renderer, c.Resources.Copy())
-
-	c.Renderer.SetDrawBlendMode(sdl.BLENDMODE_BLEND)
-}
-
-func (c *Context) Quit() { c.ShouldQuit = true }

control.go

@@ -1,82 +0,0 @@
-package tins2020
-
-import "github.com/veandco/go-sdl2/sdl"
-
-type Control interface {
-	Init(*Context) error
-	Arrange(*Context, Rectangle)
-	Handle(*Context, sdl.Event) bool
-	Render(*Context)
-}
-
-type EventContextFn func(*Context)
-
-type EventFn func()
-
-type EventInterfaceFn func(interface{})
-
-func EmptyEvent(fn EventFn) EventContextFn {
-	return func(*Context) { fn() }
-}
-
-type ControlBase struct {
-	Bounds Rectangle
-
-	FontName   string
-	Foreground sdl.Color
-
-	IsDisabled  bool
-	IsMouseOver bool
-
-	OnLeftMouseButtonClick EventContextFn
-}
-
-func (c *ControlBase) ActualForeground() sdl.Color {
-	var none sdl.Color
-	if c.Foreground == none {
-		return MustHexColor("#ffffff")
-	}
-	return c.Foreground
-}
-
-func (c *ControlBase) ActualFont(ctx *Context) *Font {
-	name := c.ActualFontName()
-	return ctx.Fonts.Font(name)
-}
-
-func (c *ControlBase) ActualFontName() string {
-	if c.FontName == "" {
-		return "default"
-	}
-	return c.FontName
-}
-
-func (b *ControlBase) Arrange(ctx *Context, bounds Rectangle) { b.Bounds = bounds }
-
-func (b *ControlBase) Init(*Context) error { return nil }
-
-func (b *ControlBase) Handle(ctx *Context, event sdl.Event) bool {
-	switch e := event.(type) {
-	case *sdl.MouseMotionEvent:
-		b.IsMouseOver = b.Bounds.IsPointInside(e.X, e.Y)
-	case *sdl.MouseButtonEvent:
-		if !b.IsDisabled && b.IsMouseOver && e.Button == sdl.BUTTON_LEFT && e.Type == sdl.MOUSEBUTTONDOWN {
-			return b.Invoke(ctx, b.OnLeftMouseButtonClick)
-		}
-	case *sdl.WindowEvent:
-		if e.Event == sdl.WINDOWEVENT_LEAVE {
-			b.IsMouseOver = false
-		}
-	}
-	return false
-}
-
-func (b *ControlBase) Invoke(ctx *Context, fn EventContextFn) bool {
-	if fn == nil {
-		return false
-	}
-	fn(ctx)
-	return true
-}
-
-func (b *ControlBase) Render(*Context) {}

conversion_test.go

@@ -1,42 +0,0 @@
-package tins2020_test
-
-import (
-	"math/rand"
-	"testing"
-)
-
-type native struct{ a, b, c, d int }
-
-type similar struct{ a, b, c, d int }
-
-func (s similar) toNative() native { return native{s.a, s.b, s.c, s.d} }
-
-type wrapper struct{ native }
-
-func (w wrapper) toNative() native { return w.native }
-
-func nativeFunction(n native) int { return n.a + n.b + n.c + n.d }
-
-func BenchmarkNative(b *testing.B) {
-	var sum int
-	for i := 0; i < b.N; i++ {
-		n := native{rand.Int(), rand.Int(), rand.Int(), rand.Int()}
-		sum += nativeFunction(n)
-	}
-}
-
-func BenchmarkSimilar(b *testing.B) {
-	var sum int
-	for i := 0; i < b.N; i++ {
-		s := similar{rand.Int(), rand.Int(), rand.Int(), rand.Int()}
-		sum += nativeFunction(s.toNative())
-	}
-}
-
-func BenchmarkWrapper(b *testing.B) {
-	var sum int
-	for i := 0; i < b.N; i++ {
-		w := wrapper{native{rand.Int(), rand.Int(), rand.Int(), rand.Int()}}
-		sum += nativeFunction(w.toNative())
-	}
-}

dial.go

@@ -0,0 +1,137 @@
+package tins2020
+
+import (
+	"math"
+	"strconv"
+
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg/ui"
+)
+
+type Dial struct {
+	ui.ContainerBase
+
+	dialer Dialer
+
+	typing     string      // current digit
+	digitCount int         // number of times the digit is pressed
+	digits     []DialDigit // digits
+}
+
+func NewDial(dialer Dialer) *Dial {
+	dial := &Dial{dialer: dialer}
+	dial.digits = make([]DialDigit, 10)
+
+	for i := range dial.digits {
+		j := i
+		dial.digits[i].Value = strconv.Itoa(i)
+		dial.digits[i].ControlClicked().AddHandler(func(ctx ui.Context, _ ui.ControlClickedArgs) {
+			dial.userTyped(ctx, j)
+		})
+		dial.AddChild(&dial.digits[i])
+	}
+	return dial
+}
+
+func (d *Dial) userTyped(ctx ui.Context, i int) {
+	d.digits[i].Blink()
+	digit := strconv.Itoa(i)
+	if len(d.typing) == 0 || digit != d.typing {
+		d.typing = digit
+		d.digitCount = 1
+	} else {
+		d.digitCount++
+	}
+
+	if !d.dialer.CanUserType(i) {
+		d.typing = ""
+		d.digitCount = 0
+		d.dialer.UserGaveWrongInput()
+	} else if d.digitCount == i || d.digitCount == 10 {
+		d.typing = ""
+		d.digitCount = 0
+		d.dialer.UserTyped(ctx, i)
+	}
+}
+
+func (d *Dial) Arrange(ctx ui.Context, bounds geom.RectangleF32, offset geom.PointF32, parent ui.Control) {
+	d.ControlBase.Arrange(ctx, bounds, offset, parent)
+
+	center := bounds.Center()
+	size := bounds.Size()
+
+	distance := size.Y * .3
+	for i := range d.digits {
+		angle := (float32((10-i)%10)*0.16 + .2) * math.Pi
+		pos := geom.PtF32(distance*geom.Cos32(angle), .8*distance*geom.Sin32(angle))
+		digitCenter := center.Add(pos)
+		d.digits[i].Arrange(ctx, geom.RectRelF32(digitCenter.X-24, digitCenter.Y-24, 48, 48), offset, d)
+	}
+}
+
+func (d *Dial) DesiredSize(ctx ui.Context, size geom.PointF32) geom.PointF32 {
+	return geom.PtF32(size.X, geom.NaN32())
+}
+
+func (d *Dial) Handle(ctx ui.Context, event ui.Event) bool {
+	if d.ContainerBase.Handle(ctx, event) {
+		return true
+	}
+	switch e := event.(type) {
+	case *ui.KeyDownEvent:
+		switch e.Key {
+		case ui.Key0:
+			d.userTyped(ctx, 0)
+		case ui.KeyPad0:
+			d.userTyped(ctx, 0)
+		case ui.Key1:
+			d.userTyped(ctx, 1)
+		case ui.KeyPad1:
+			d.userTyped(ctx, 1)
+		case ui.Key2:
+			d.userTyped(ctx, 2)
+		case ui.KeyPad2:
+			d.userTyped(ctx, 2)
+		case ui.Key3:
+			d.userTyped(ctx, 3)
+		case ui.KeyPad3:
+			d.userTyped(ctx, 3)
+		case ui.Key4:
+			d.userTyped(ctx, 4)
+		case ui.KeyPad4:
+			d.userTyped(ctx, 4)
+		case ui.Key5:
+			d.userTyped(ctx, 5)
+		case ui.KeyPad5:
+			d.userTyped(ctx, 5)
+		case ui.Key6:
+			d.userTyped(ctx, 6)
+		case ui.KeyPad6:
+			d.userTyped(ctx, 6)
+		case ui.Key7:
+			d.userTyped(ctx, 7)
+		case ui.KeyPad7:
+			d.userTyped(ctx, 7)
+		case ui.Key8:
+			d.userTyped(ctx, 8)
+		case ui.KeyPad8:
+			d.userTyped(ctx, 8)
+		case ui.Key9:
+			d.userTyped(ctx, 9)
+		case ui.KeyPad9:
+			d.userTyped(ctx, 9)
+		}
+	}
+	return false
+}
+
+func (d *Dial) Reset() {
+	d.typing = ""
+	d.digitCount = 0
+}
+
+func (d *Dial) Tick() {
+	for i := range d.digits {
+		d.digits[i].Tick()
+	}
+}

dialdigit.go

@@ -0,0 +1,34 @@
+package tins2020
+
+import (
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg"
+	"opslag.de/schobers/zntg/ui"
+)
+
+type DialDigit struct {
+	ui.ControlBase
+
+	Value string
+
+	highlight int
+}
+
+func (d *DialDigit) Blink() {
+	d.highlight = 4
+}
+
+func (d *DialDigit) Render(ctx ui.Context) {
+	color := zntg.MustHexColor(`#FFFFFF`)
+	if d.highlight > 0 {
+		color = zntg.MustHexColor(`#15569F`)
+	}
+	bounds := d.Bounds()
+	ctx.Fonts().TextAlign("title", geom.PtF32(bounds.Center().X, bounds.Min.Y), color, d.Value, ui.AlignCenter)
+}
+
+func (d *DialDigit) Tick() {
+	if d.highlight > 0 {
+		d.highlight--
+	}
+}

dialogs.go

@@ -1,66 +1,84 @@
 package tins2020
 
+import (
+	"opslag.de/schobers/zntg/ui"
+)
+
 type Dialogs struct {
-	Proxy
+	ui.Proxy
 
-	intro    Control
+	intro    ui.Overlay
-	settings Control
+	research ui.Overlay
-	research Control
+	settings ui.Overlay
+	nothing  ui.Control
 
-	dialogClosed *Events
+	closed ui.Events
-	dialogOpened *Events
+	opened ui.Events
 }
 
+const dialogsOverlayName = "dialogs"
+
 func NewDialogs(game *Game) *Dialogs {
-	return &Dialogs{
+	intro := NewIntro()
-		intro:    &Intro{},
+	research := NewResearch(game)
-		settings: &LargeDialog{},
+	settings := NewLargeDialog("Settings", &ui.Label{})
-		research: NewResearch(game),
 
-		dialogClosed: NewEvents(),
+	dialogs := &Dialogs{
-		dialogOpened: NewEvents(),
+		intro:    intro,
+		settings: settings,
+		research: research,
+		nothing:  &ui.ControlBase{},
+	}
+
+	intro.CloseRequested().AddHandlerEmpty(dialogs.Close)
+	research.CloseRequested().AddHandlerEmpty(dialogs.Close)
+	settings.CloseRequested().AddHandlerEmpty(dialogs.Close)
+
+	return dialogs
+}
+
+func (d *Dialogs) Init(ctx ui.Context) {
+	overlays := ctx.Overlays()
+	overlays.AddOnTop(dialogsOverlayName, d, false)
+
+	d.Content = d.nothing
+}
+
+func (d *Dialogs) showDialog(ctx ui.Context, control ui.Control) {
+	if control == nil {
+		ctx.Overlays().Hide(dialogsOverlayName)
+		d.closed.Notify(ctx, control)
+		d.Content = d.nothing
+	} else {
+		d.Content = control
+		ctx.Overlays().Show(dialogsOverlayName)
+		d.opened.Notify(ctx, control)
 	}
 }
 
-func (d *Dialogs) showDialog(ctx *Context, control Control) {
+func (d *Dialogs) Close(ctx ui.Context) {
-	d.SetContent(ctx, control)
+	d.showDialog(ctx, nil)
-	control.(Dialog).ShowDialog(ctx, d.Close)
-	d.dialogOpened.Notify(nil)
 }
 
-func (d *Dialogs) Arrange(ctx *Context, bounds Rectangle) {
+func (d *Dialogs) DialogClosed() ui.EventHandler { return &d.closed }
-	d.Proxy.Arrange(ctx, bounds)
+func (d *Dialogs) DialogOpened() ui.EventHandler { return &d.opened }
+
+func (d *Dialogs) Hidden() {
+	d.Proxy.Hidden()
 }
 
-func (d *Dialogs) DialogClosed() EventHandler { return d.dialogClosed }
+func (d *Dialogs) ShowIntro(ctx ui.Context) {
-func (d *Dialogs) DialogOpened() EventHandler { return d.dialogOpened }
-
-func (d *Dialogs) Init(ctx *Context) error {
-	err := d.intro.Init(ctx)
-	if err != nil {
-		return err
-	}
-	err = d.settings.Init(ctx)
-	if err != nil {
-		return err
-	}
-	err = d.research.Init(ctx)
-	return nil
-}
-
-func (d *Dialogs) Close() {
-	d.SetContent(nil, nil)
-	d.dialogClosed.Notify(nil)
-}
-
-func (d *Dialogs) ShowIntro(ctx *Context) {
 	d.showDialog(ctx, d.intro)
 }
 
-func (d *Dialogs) ShowResearch(ctx *Context) {
+func (d *Dialogs) Shown() {
+	d.Proxy.Shown()
+}
+
+func (d *Dialogs) ShowResearch(ctx ui.Context) {
 	d.showDialog(ctx, d.research)
 }
 
-func (d *Dialogs) ShowSettings(ctx *Context) {
+func (d *Dialogs) ShowSettings(ctx ui.Context) {
 	d.showDialog(ctx, d.settings)
 }

drageable.go

@@ -1,24 +0,0 @@
-package tins2020
-
-type Drageable struct {
-	start   *Point
-	dragged bool
-}
-
-func (d *Drageable) Cancel() { d.start = nil }
-
-func (d *Drageable) IsDragging() bool { return d.start != nil }
-
-func (d *Drageable) HasDragged() bool { return d.dragged }
-
-func (d *Drageable) Move(p Point) Point {
-	delta := p.Sub(*d.start)
-	d.start = &p
-	d.dragged = true
-	return delta
-}
-
-func (d *Drageable) Start(p Point) {
-	d.start = &p
-	d.dragged = false
-}

eventhandler.go

@@ -1,33 +0,0 @@
-package tins2020
-
-func NewEvents() *Events {
-	return &Events{events: map[int]EventInterfaceFn{}}
-}
-
-type Events struct {
-	nextID int
-	events map[int]EventInterfaceFn
-}
-
-type EventHandler interface {
-	Register(EventFn) int
-	RegisterItf(EventInterfaceFn) int
-	Unregister(int)
-}
-
-func (h *Events) Notify(state interface{}) {
-	for _, event := range h.events {
-		event(state)
-	}
-}
-
-func (h *Events) Register(fn EventFn) int { return h.RegisterItf(func(interface{}) { fn() }) }
-
-func (h *Events) RegisterItf(fn EventInterfaceFn) int {
-	id := h.nextID
-	h.nextID++
-	h.events[id] = fn
-	return id
-}
-
-func (h *Events) Unregister(id int) { delete(h.events, id) }

fonts.go

@@ -1,109 +0,0 @@
-package tins2020
-
-import (
-	"fmt"
-
-	"github.com/veandco/go-sdl2/sdl"
-	"github.com/veandco/go-sdl2/ttf"
-	"opslag.de/schobers/fs/vfs"
-)
-
-type TextAlignment int
-
-const (
-	TextAlignmentLeft TextAlignment = iota
-	TextAlignmentCenter
-	TextAlignmentRight
-)
-
-type Font struct {
-	*ttf.Font
-}
-
-func (f *Font) Render(renderer *sdl.Renderer, text string, color sdl.Color) (*Texture, error) {
-	surface, err := f.RenderUTF8Blended(text, color)
-	if err != nil {
-		return nil, err
-	}
-	defer surface.Free()
-	texture, err := NewTextureFromSurface(renderer, surface)
-	if err != nil {
-		return nil, err
-	}
-	return texture, nil
-}
-
-func (f *Font) RenderCopyAlign(renderer *sdl.Renderer, text string, pos Point, color sdl.Color, align TextAlignment) error {
-	texture, err := f.Render(renderer, text, color)
-	if err != nil {
-		return err
-	}
-	defer texture.Destroy()
-	size := texture.Size()
-	switch align {
-	case TextAlignmentLeft:
-		texture.Copy(renderer, Pt(pos.X, pos.Y-size.Y))
-	case TextAlignmentCenter:
-		texture.Copy(renderer, Pt(pos.X-(size.X/2), pos.Y-size.Y))
-	case TextAlignmentRight:
-		texture.Copy(renderer, Pt(pos.X-size.X, pos.Y-size.Y))
-	}
-	return nil
-}
-
-func (f *Font) RenderCopy(renderer *sdl.Renderer, text string, pos Point, color sdl.Color) error {
-	return f.RenderCopyAlign(renderer, text, pos, color, TextAlignmentLeft)
-}
-
-type Fonts struct {
-	dir   vfs.CopyDir
-	fonts map[string]*Font
-}
-
-func (f *Fonts) Init(dir vfs.CopyDir) {
-	f.dir = dir
-	f.fonts = map[string]*Font{}
-}
-
-func (f *Fonts) Font(name string) *Font { return f.fonts[name] }
-
-type FontDescriptor struct {
-	Name string
-	Path string
-	Size int
-}
-
-func (f *Fonts) LoadDesc(fonts ...FontDescriptor) error {
-	for _, desc := range fonts {
-		err := f.Load(desc.Name, desc.Path, desc.Size)
-		if err != nil {
-			return fmt.Errorf("error loading '%s'; error: %v", desc.Name, err)
-		}
-	}
-	return nil
-}
-
-func (f *Fonts) Load(name, path string, size int) error {
-	fontPath, err := f.dir.Retrieve(path)
-	if err != nil {
-		return err
-	}
-	font, err := ttf.OpenFont(fontPath, size)
-	if err != nil {
-		return err
-	}
-	if font, ok := f.fonts[name]; ok {
-		font.Close()
-	}
-	f.fonts[name] = &Font{font}
-	return nil
-}
-
-func (f *Fonts) Destroy() {
-	if f.fonts == nil {
-		return
-	}
-	for _, f := range f.fonts {
-		f.Close()
-	}
-}

fpsrenderer.go

@@ -1,46 +0,0 @@
-package tins2020
-
-import (
-	"fmt"
-	"time"
-
-	"github.com/veandco/go-sdl2/sdl"
-)
-
-type FPS struct {
-	ControlBase
-
-	Show  *bool
-	start time.Time
-	stamp time.Duration
-	slot  int
-	ticks []int
-	total int
-}
-
-func (f *FPS) Init(*Context) error {
-	f.start = time.Now()
-	f.stamp = 0
-	f.ticks = make([]int, 51)
-	return nil
-}
-
-func (f *FPS) Render(ctx *Context) {
-	if f.Show == nil || !*f.Show {
-		return
-	}
-
-	elapsed := time.Since(f.start)
-	stamp := elapsed / (20 * time.Millisecond)
-	for f.stamp < stamp {
-		f.total += f.ticks[f.slot]
-		f.slot = (f.slot + 1) % len(f.ticks)
-		f.total -= f.ticks[f.slot]
-		f.ticks[f.slot] = 0
-		f.stamp++
-	}
-	f.ticks[f.slot]++
-
-	font := ctx.Fonts.Font("debug")
-	font.RenderCopy(ctx.Renderer, fmt.Sprintf("FPS: %d", f.total), Pt(5, 17), sdl.Color{R: 255, G: 255, B: 255, A: 255})
-}

game.go

@@ -4,6 +4,10 @@ import (
 	"log"
 	"math/rand"
 	"time"
+
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg"
+	"opslag.de/schobers/zntg/ui"
 )
 
 type Game struct {
@@ -16,10 +20,10 @@ type Game struct {
 	Terrain          *Map
 
 	tool          Tool
-	centerChanged *Events
+	centerChanged ui.Events
-	toolChanged   *Events
+	toolChanged   ui.Events
-	speedChanged  *Events
+	speedChanged  ui.Events
-	simulation    Animation
+	simulation    zntg.Animation
 }
 
 type GameSpeed string
@@ -35,21 +39,17 @@ const fastSimulationInterval = 20 * time.Millisecond
 
 func NewGame() *Game {
 	game := &Game{
-		centerChanged: NewEvents(),
+		simulation: zntg.Animation{Interval: time.Millisecond * 10},
-		speedChanged:  NewEvents(),
-		toolChanged:   NewEvents(),
-		simulation:    NewAnimation(time.Millisecond * 10),
 	}
-	game.Reset()
 	return game
 }
 
-func (g *Game) selectTool(t Tool) {
+func (g *Game) selectTool(ctx ui.Context, t Tool) {
 	g.tool = t
-	g.toolChanged.Notify(t)
+	g.toolChanged.Notify(ctx, t)
 }
 
-func (g *Game) setSpeed(speed GameSpeed) {
+func (g *Game) setSpeed(ctx ui.Context, speed GameSpeed) {
 	if speed == g.Speed {
 		return
 	}
@@ -57,35 +57,35 @@ func (g *Game) setSpeed(speed GameSpeed) {
 		g.SpeedBeforePause = g.Speed
 	}
 	g.Speed = speed
-	g.speedChanged.Notify(speed)
+	g.speedChanged.Notify(ctx, speed)
 
 	switch speed {
 	case GameSpeedPaused:
 		g.simulation.Pause()
 	case GameSpeedNormal:
-		g.simulation.SetInterval(simulationInterval)
+		g.simulation.Interval = simulationInterval
-		g.simulation.Run()
+		g.simulation.Start()
 	case GameSpeedFast:
-		g.simulation.SetInterval(fastSimulationInterval)
+		g.simulation.Interval = fastSimulationInterval
-		g.simulation.Run()
+		g.simulation.Start()
 	}
 }
 
 func (g *Game) tick() {
-	randomNeighbor := func(pos Point) Point {
+	randomNeighbor := func(pos geom.Point) geom.Point {
 		switch rand.Intn(4) {
 		case 0:
-			return Pt(pos.X-1, pos.Y)
+			return geom.Pt(pos.X-1, pos.Y)
 		case 1:
-			return Pt(pos.X, pos.Y-1)
+			return geom.Pt(pos.X, pos.Y-1)
 		case 2:
-			return Pt(pos.X+1, pos.Y)
+			return geom.Pt(pos.X+1, pos.Y)
 		case 3:
-			return Pt(pos.X, pos.Y+1)
+			return geom.Pt(pos.X, pos.Y+1)
 		}
 		return pos
 	}
-	flowers := map[Point]Flower{}
+	flowers := map[geom.Point]Flower{}
 	for pos, flower := range g.Terrain.Flowers {
 		if rand.Float32() < flower.Traits.Spread {
 			dst := randomNeighbor(pos)
@@ -102,13 +102,13 @@ func (g *Game) tick() {
 	g.Terrain.Flowers = flowers
 }
 
-func (g *Game) CancelTool() {
+func (g *Game) CancelTool(ctx ui.Context) {
-	g.selectTool(nil)
+	g.selectTool(ctx, nil)
 }
 
-func (g *Game) CenterChanged() EventHandler { return g.centerChanged }
+func (g *Game) CenterChanged() ui.EventHandler { return &g.centerChanged }
 
-func (g *Game) Dig(tile Point) {
+func (g *Game) Dig(tile geom.Point) {
 	id := g.Terrain.DigFlower(tile)
 	desc, ok := g.Herbarium.Find(id)
 	if !ok {
@@ -125,14 +125,14 @@ func (g *Game) Dig(tile Point) {
 	}
 }
 
-func (g *Game) New() {
+func (g *Game) New(ctx ui.Context) {
-	g.Pause()
+	g.Pause(ctx)
-	g.Reset()
+	g.Reset(ctx)
 }
 
-func (g *Game) Load() {
+func (g *Game) Load(ctx ui.Context) {
-	g.CancelTool()
+	g.CancelTool(ctx)
-	g.Pause()
+	g.Pause(ctx)
 
 	var state GameState
 	err := state.Deserialize(SaveGameName())
@@ -155,22 +155,20 @@ func (g *Game) Load() {
 		Variant: NewRandomNoiseMap(state.Terrain.Variant),
 		PlaceX:  NewRandomNoiseMap(state.Terrain.PlaceX),
 		PlaceY:  NewRandomNoiseMap(state.Terrain.PlaceY),
-		Flowers: map[Point]Flower{},
+		Flowers: map[geom.Point]Flower{},
 	}
 	for _, flower := range state.Terrain.Flowers {
 		desc, _ := g.Herbarium.Find(flower.ID)
 		g.Terrain.AddFlower(flower.Location, flower.ID, desc.Traits)
 	}
 	g.Terrain.Center = state.View.Center
-	g.centerChanged.Notify(g.Terrain.Center)
+	g.centerChanged.Notify(ctx, g.Terrain.Center)
-
+	g.setSpeed(ctx, state.Speed)
-	g.CancelTool()
-	g.setSpeed(state.Speed)
 }
 
-func (g *Game) Pause() { g.setSpeed(GameSpeedPaused) }
+func (g *Game) Pause(ctx ui.Context) { g.setSpeed(ctx, GameSpeedPaused) }
 
-func (g *Game) PlantFlower(id string, tile Point) {
+func (g *Game) PlantFlower(id string, tile geom.Point) {
 	if g.Terrain.HasFlower(tile) {
 		// TODO: notify user it tried to plant on tile with flower?
 		return
@@ -189,7 +187,7 @@ func (g *Game) PlantFlower(id string, tile Point) {
 	g.Terrain.AddFlower(tile, id, flower.Traits)
 }
 
-func (g *Game) Reset() {
+func (g *Game) Reset(ctx ui.Context) {
 	g.Balance = 100
 	g.Herbarium = NewHerbarium()
 	g.Terrain = &Map{
@@ -198,17 +196,17 @@ func (g *Game) Reset() {
 		Variant: NewRandomNoiseMap(rand.Int63()),
 		PlaceX:  NewRandomNoiseMap(rand.Int63()),
 		PlaceY:  NewRandomNoiseMap(rand.Int63()),
-		Flowers: map[Point]Flower{},
+		Flowers: map[geom.Point]Flower{},
 	}
-	g.CancelTool()
+	g.CancelTool(ctx)
-	g.setSpeed(GameSpeedNormal)
+	g.setSpeed(ctx, GameSpeedNormal)
 }
 
-func (g *Game) Resume() { g.setSpeed(g.SpeedBeforePause) }
+func (g *Game) Resume(ctx ui.Context) { g.setSpeed(ctx, g.SpeedBeforePause) }
 
-func (g *Game) Run() { g.setSpeed(GameSpeedNormal) }
+func (g *Game) Run(ctx ui.Context) { g.setSpeed(ctx, GameSpeedNormal) }
 
-func (g *Game) RunFast() { g.setSpeed(GameSpeedFast) }
+func (g *Game) RunFast(ctx ui.Context) { g.setSpeed(ctx, GameSpeedFast) }
 
 func (g *Game) Save() {
 	state := g.State()
@@ -218,15 +216,15 @@ func (g *Game) Save() {
 	}
 }
 
-func (g *Game) SelectPlantFlowerTool(id string) {
+func (g *Game) SelectPlantFlowerTool(ctx ui.Context, id string) {
-	g.selectTool(&PlantFlowerTool{FlowerID: id})
+	g.selectTool(ctx, &PlantFlowerTool{FlowerID: id})
 }
 
-func (g *Game) SelectShovel() {
+func (g *Game) SelectShovel(ctx ui.Context) {
-	g.selectTool(&ShovelTool{})
+	g.selectTool(ctx, &ShovelTool{})
 }
 
-func (g *Game) SpeedChanged() EventHandler { return g.speedChanged }
+func (g *Game) SpeedChanged() ui.EventHandler { return &g.speedChanged }
 
 func (g *Game) State() GameState {
 	var state GameState
@@ -255,22 +253,22 @@ func (g *Game) State() GameState {
 	return state
 }
 
-func (g *Game) TogglePause() {
+func (g *Game) TogglePause(ctx ui.Context) {
 	if g.Speed == GameSpeedPaused {
-		g.Resume()
+		g.Resume(ctx)
 	} else {
-		g.Pause()
+		g.Pause(ctx)
 	}
 }
 
 func (g *Game) Tool() Tool { return g.tool }
 
-func (g *Game) ToolChanged() EventHandler { return g.toolChanged }
+func (g *Game) ToolChanged() ui.EventHandler { return &g.toolChanged }
 
-func (g *Game) UnlockNextFlower() {
+func (g *Game) UnlockNextFlower(ctx ui.Context) {
 	price := g.Herbarium.UnlockNext()
 	g.Balance -= price
-	g.selectTool(nil)
+	g.selectTool(ctx, nil)
 }
 
 func (g *Game) Update() {
@@ -279,7 +277,7 @@ func (g *Game) Update() {
 	}
 }
 
-func (g *Game) UserClickedTile(pos Point) {
+func (g *Game) UserClickedTile(pos geom.Point) {
 	if g.tool == nil {
 		return
 	}

gamecontrols.go

@@ -1,19 +1,24 @@
 package tins2020
 
 import (
-	"github.com/veandco/go-sdl2/sdl"
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg"
+	"opslag.de/schobers/zntg/play"
+	"opslag.de/schobers/zntg/ui"
 )
 
+const fpsOverlayName = "fps"
+
 type GameControls struct {
-	Container
+	ui.ContainerBase
 
 	game    *Game
 	dialogs *Dialogs
 
-	menu       ButtonBar
+	menu       ui.StackPanel
-	top        ButtonBar
+	top        ui.StackPanel
-	flowers    ButtonBar
+	flowers    ui.StackPanel
-	otherTools ButtonBar
+	otherTools ui.StackPanel
 
 	pause   *IconButton
 	run     *IconButton
@@ -27,6 +32,90 @@ func NewGameControls(game *Game, dialogs *Dialogs) *GameControls {
 	return &GameControls{game: game, dialogs: dialogs}
 }
 
+func (c *GameControls) Init(ctx ui.Context) {
+	ctx.Overlays().AddOnTop(fpsOverlayName, &play.FPS{}, false)
+	c.game.SpeedChanged().AddHandler(c.speedChanged)
+	c.game.ToolChanged().AddHandler(c.toolChanged)
+	c.dialogs.DialogOpened().AddHandlerEmpty(func(ctx ui.Context) { c.game.Pause(ctx) })
+	c.dialogs.DialogClosed().AddHandlerEmpty(func(ctx ui.Context) {
+		c.updateFlowerControls()
+		c.game.Resume(ctx)
+	})
+
+	c.flowers.Background = zntg.MustHexColor("#356DAD")
+
+	for _, id := range c.game.Herbarium.Flowers() {
+		c.flowers.Children = append(c.flowers.Children, c.createBuyFlowerButton(id))
+	}
+
+	c.top.Orientation = ui.OrientationHorizontal
+	c.pause = NewIconButtonConfigure("control-pause", func(ctx ui.Context) {
+		c.game.Pause(ctx)
+	}, func(b *IconButton) {
+		b.DisabledColor = ctx.Style().Palette.Secondary
+		b.Tooltip = "Pause game"
+	})
+	c.run = NewIconButtonConfigure("control-run", func(ctx ui.Context) {
+		c.game.Run(ctx)
+	}, func(b *IconButton) {
+		b.DisabledColor = ctx.Style().Palette.Secondary
+		b.Tooltip = "Run game at normal speed"
+	})
+	c.runFast = NewIconButtonConfigure("control-run-fast", func(ctx ui.Context) {
+		c.game.RunFast(ctx)
+	}, func(b *IconButton) {
+		b.DisabledColor = ctx.Style().Palette.Secondary
+		b.Tooltip = "Run game at fast speed"
+	})
+	c.speedChanged(nil, c.game.Speed)
+	c.top.Children = []ui.Control{c.pause, c.run, c.runFast}
+
+	c.menu.Background = zntg.MustHexColor("#356DAD")
+	c.menu.Children = []ui.Control{
+		NewIconButtonConfigure("control-settings", c.dialogs.ShowSettings, func(b *IconButton) {
+			b.Disabled = true
+			b.DisabledColor = zntg.MustHexColor("#AFAFAF")
+		}),
+		NewIconButtonConfigure("control-save", func(ui.Context) { c.game.Save() }, func(b *IconButton) {
+			b.Tooltip = "Save game (overwrites previous save; no confirmation)"
+		}),
+		NewIconButtonConfigure("control-load", func(ctx ui.Context) {
+			c.game.Load(ctx)
+			c.updateFlowerControls()
+		}, func(b *IconButton) {
+			b.Tooltip = "Load last saved game (no confirmation)"
+		}),
+		NewIconButtonConfigure("control-new", func(ctx ui.Context) {
+			c.game.New(ctx)
+			c.updateFlowerControls()
+		}, func(b *IconButton) {
+			b.Tooltip = "Start new game (no confirmation)"
+		}),
+		NewIconButtonConfigure("control-information", c.dialogs.ShowIntro, func(b *IconButton) {
+			b.Tooltip = "Show information/intro"
+		}),
+	}
+	for i, child := range c.menu.Children {
+		c.menu.Children[i] = ui.FixedHeight(child, 96)
+	}
+
+	c.shovel = NewIconButtonConfigure("control-shovel", func(ctx ui.Context) { c.game.SelectShovel(ctx) }, func(b *IconButton) {
+		b.Tooltip = "Select harvest tool (key: H)"
+	})
+	c.research = NewIconButtonConfigure("control-research", c.dialogs.ShowResearch, func(b *IconButton) {
+		b.Tooltip = "Conduct research (key: R)"
+	})
+	c.otherTools.Children = []ui.Control{c.shovel, c.research}
+	for i, child := range c.otherTools.Children {
+		c.otherTools.Children[i] = ui.FixedHeight(child, 96)
+	}
+
+	c.AddChild(&c.menu)
+	c.AddChild(&c.top)
+	c.AddChild(&c.flowers)
+	c.AddChild(&c.otherTools)
+}
+
 func (c *GameControls) createBuyFlowerButton(id string) *BuyFlowerButton {
 	flower, _ := c.game.Herbarium.Find(id)
 	return NewBuyFlowerButton(
@@ -34,176 +123,96 @@ func (c *GameControls) createBuyFlowerButton(id string) *BuyFlowerButton {
 		flower.IconTemplate.Disabled(),
 		id,
 		flower,
-		EmptyEvent(func() {
+		func(ctx ui.Context) {
-			c.game.SelectPlantFlowerTool(id)
+			c.game.SelectPlantFlowerTool(ctx, id)
-		}),
+		},
 	)
 }
 
-func (c *GameControls) speedChanged(state interface{}) {
+func (c *GameControls) speedChanged(_ ui.Context, state interface{}) {
 	speed := state.(GameSpeed)
 	disable := func(b *IconButton, expected GameSpeed) {
-		b.IsDisabled = speed == expected
+		b.Disabled = speed == expected
 	}
 	disable(c.pause, GameSpeedPaused)
 	disable(c.run, GameSpeedNormal)
 	disable(c.runFast, GameSpeedFast)
 }
 
-func (c *GameControls) toolChanged(state interface{}) {
+func (c *GameControls) toolChanged(_ ui.Context, state interface{}) {
 	tool, _ := state.(Tool)
 	var flowerID string
 	if tool, ok := tool.(*PlantFlowerTool); ok {
 		flowerID = tool.FlowerID
 	}
-	for _, control := range c.flowers.Buttons {
+	for _, control := range c.flowers.Children {
 		button := control.(*BuyFlowerButton)
-		button.IsActive = button.FlowerID == flowerID
+		button.Active = button.FlowerID == flowerID
-		button.IsDisabled = !c.game.Herbarium.IsUnlocked(button.FlowerID)
+		button.Disabled = !c.game.Herbarium.IsUnlocked(button.FlowerID)
 	}
 	_, shovel := tool.(*ShovelTool)
-	c.shovel.IsActive = shovel
+	c.shovel.Active = shovel
 }
 
-func (c *GameControls) updateFlowerControls(ctx *Context) {
+func (c *GameControls) updateFlowerControls() {
-	for _, b := range c.flowers.Buttons {
+	for _, b := range c.flowers.Children {
 		button := b.(*BuyFlowerButton)
 		flower, ok := c.game.Herbarium.Find(button.FlowerID)
 		if ok {
-			button.Update(ctx, flower)
+			button.Update(flower)
 		}
 	}
 }
 
-func (c *GameControls) Arrange(ctx *Context, bounds Rectangle) {
+const buttonBarWidth = 96
-	c.Bounds = bounds
+
-	c.menu.Arrange(ctx, Rect(bounds.X, bounds.Y, buttonBarWidth, bounds.H))
+func (c *GameControls) Arrange(ctx ui.Context, bounds geom.RectangleF32, offset geom.PointF32, parent ui.Control) {
-	c.top.Arrange(ctx, RectAbs(bounds.X+bounds.W/2+8, bounds.Y, bounds.Right(), bounds.Y+64))
+	c.ContainerBase.Arrange(ctx, bounds, offset, parent)
-	c.flowers.Arrange(ctx, Rect(bounds.Right()-buttonBarWidth, bounds.Y, buttonBarWidth, bounds.H))
+
-	c.otherTools.Arrange(ctx, Rect(bounds.Right()-buttonBarWidth, bounds.Bottom()-2*buttonBarWidth, buttonBarWidth, 2*buttonBarWidth))
+	c.menu.Arrange(ctx, geom.RectRelF32(bounds.Min.X, bounds.Min.Y, buttonBarWidth, bounds.Dy()), offset, c)
+	c.top.Arrange(ctx, geom.RectF32(bounds.Min.X+bounds.Dx()/2+8, bounds.Min.Y, bounds.Max.X, bounds.Min.Y+64), offset, c)
+	c.flowers.Arrange(ctx, geom.RectRelF32(bounds.Max.X-buttonBarWidth, bounds.Min.Y, buttonBarWidth, bounds.Dy()), offset, c)
+	otherToolsSize := c.otherTools.DesiredSize(ctx, bounds.Size())
+	c.otherTools.Arrange(ctx, geom.RectRelF32(bounds.Max.X-buttonBarWidth, bounds.Max.Y-otherToolsSize.Y, buttonBarWidth, 2*buttonBarWidth), offset, c)
 }
 
-func (c *GameControls) Init(ctx *Context) error {
+func (c *GameControls) Handle(ctx ui.Context, event ui.Event) bool {
-	c.game.SpeedChanged().RegisterItf(c.speedChanged)
+	if c.ContainerBase.Handle(ctx, event) {
-	c.game.ToolChanged().RegisterItf(c.toolChanged)
-	c.dialogs.DialogOpened().Register(func() { c.game.Pause() })
-	c.dialogs.DialogClosed().Register(func() {
-		c.updateFlowerControls(ctx)
-		c.game.Resume()
-	})
-
-	c.flowers.Background = MustHexColor("#356dad")
-	c.flowers.ButtonLength = 64
-
-	for _, id := range c.game.Herbarium.Flowers() {
-		c.flowers.Buttons = append(c.flowers.Buttons, c.createBuyFlowerButton(id))
-	}
-
-	c.top.Orientation = OrientationHorizontal
-	c.pause = NewIconButtonConfigure("control-pause", EmptyEvent(func() {
-		c.game.Pause()
-	}), func(b *IconButton) {
-		b.IconDisabled = "control-pause-disabled"
-		b.Tooltip.Text = "Pause game"
-	})
-	c.run = NewIconButtonConfigure("control-run", EmptyEvent(func() {
-		c.game.Run()
-	}), func(b *IconButton) {
-		b.IconDisabled = "control-run-disabled"
-		b.Tooltip.Text = "Run game at normal speed"
-	})
-	c.runFast = NewIconButtonConfigure("control-run-fast", EmptyEvent(func() {
-		c.game.RunFast()
-	}), func(b *IconButton) {
-		b.IconDisabled = "control-run-fast-disabled"
-		b.Tooltip.Text = "Run game at fast speed"
-	})
-	c.speedChanged(c.game.Speed)
-	c.top.Buttons = []Control{c.pause, c.run, c.runFast}
-
-	c.menu.Background = MustHexColor("#356dad")
-	c.menu.Buttons = []Control{
-		NewIconButtonConfigure("control-settings", c.dialogs.ShowSettings, func(b *IconButton) {
-			b.IsDisabled = true
-			b.IconDisabled = "#afafaf"
-		}),
-		NewIconButtonConfigure("control-save", func(*Context) { c.game.Save() }, func(b *IconButton) {
-			b.Tooltip.Text = "Save game (overwrites previous save; no confirmation)"
-		}),
-		NewIconButtonConfigure("control-load", func(ctx *Context) {
-			c.game.Load()
-			c.updateFlowerControls(ctx)
-		}, func(b *IconButton) {
-			b.Tooltip.Text = "Load last saved game (no confirmation)"
-		}),
-		NewIconButtonConfigure("control-new", func(ctx *Context) {
-			c.game.New()
-			c.updateFlowerControls(ctx)
-		}, func(b *IconButton) {
-			b.Tooltip.Text = "Start new game (no confirmation)"
-		}),
-		NewIconButtonConfigure("control-information", c.dialogs.ShowIntro, func(b *IconButton) {
-			b.Tooltip.Text = "Show information/intro"
-		}),
-	}
-
-	c.shovel = NewIconButtonConfigure("control-shovel", func(*Context) { c.game.SelectShovel() }, func(b *IconButton) {
-		b.IconHeight = 32
-		b.Tooltip.Text = "Select harvest tool (key: H)"
-	})
-	c.research = NewIconButtonConfigure("control-research", c.dialogs.ShowResearch, func(b *IconButton) {
-		b.IconHeight = 32
-		b.Tooltip.Text = "Conduct research (key: R)"
-	})
-	c.otherTools.Buttons = []Control{c.shovel, c.research}
-
-	c.Container.AddChild(&c.menu)
-	c.Container.AddChild(&c.top)
-	c.Container.AddChild(&c.flowers)
-	c.Container.AddChild(&c.otherTools)
-
-	return c.Container.Init(ctx)
-}
-
-func (c *GameControls) Handle(ctx *Context, event sdl.Event) bool {
-	if c.Container.Handle(ctx, event) {
 		return true
 	}
 
 	switch e := event.(type) {
-	case *sdl.KeyboardEvent:
+	case *ui.KeyDownEvent:
-		if e.Type == sdl.KEYDOWN {
+		switch e.Key {
-			switch e.Keysym.Sym {
+		case ui.KeySpace:
-			case sdl.K_SPACE:
+			c.game.TogglePause(ctx)
-				c.game.TogglePause()
+		case ui.Key1:
-			case sdl.K_1:
+			c.game.Run(ctx)
-				c.game.Run()
+		case ui.Key2:
-			case sdl.K_2:
+			c.game.RunFast(ctx)
-				c.game.RunFast()
+		case ui.KeyH:
-			case sdl.K_h:
+			c.game.SelectShovel(ctx)
-				c.game.SelectShovel()
+		case ui.KeyR:
-			case sdl.K_r:
 			c.dialogs.ShowResearch(ctx)
-			case sdl.K_ESCAPE:
+		case ui.KeyEscape:
 			if c.game.Tool() == nil {
 				c.dialogs.ShowIntro(ctx)
 			} else {
-					c.game.CancelTool()
+				c.game.CancelTool(ctx)
 			}
 			return true
-			case sdl.K_F3:
+		case ui.KeyF4:
 			c.game.Debug = !c.game.Debug
-			}
+			ctx.Overlays().Toggle(fpsOverlayName)
 		}
 	}
 	return false
 }
 
-func (c *GameControls) Render(ctx *Context) {
+func (c *GameControls) Render(ctx ui.Context) {
-	topBar := MustHexColor("#0000007f")
+	topBar := zntg.MustHexColor("#0000007F")
-	SetDrawColor(ctx.Renderer, topBar)
+	ctx.Renderer().FillRectangle(geom.RectF32(c.menu.Bounds().Max.X, 0, c.flowers.Bounds().Min.X, 64), topBar)
-	ctx.Renderer.FillRect(RectAbs(c.menu.Bounds.Right(), 0, c.flowers.Bounds.X, 64).SDLPtr())
+	ctx.Fonts().TextAlign("balance", geom.PtF32(c.top.Bounds().Min.X-8, 4), zntg.MustHexColor("#4AC69A"), FmtMoney(c.game.Balance), ui.AlignRight)
-	ctx.Fonts.Font("balance").RenderCopyAlign(ctx.Renderer, FmtMoney(c.game.Balance), Pt(c.top.Bounds.X-8, 58), MustHexColor("#4AC69A"), TextAlignmentRight)
 
-	c.Container.Render(ctx)
+	c.ContainerBase.Render(ctx)
 }

gamestate.go

@@ -1,8 +1,13 @@
 package tins2020
 
+import (
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg"
+)
+
 type FlowerState struct {
 	ID       string
-	Location Point
+	Location geom.Point
 }
 
 type GameState struct {
@@ -32,7 +37,7 @@ type TerrainState struct {
 }
 
 type ViewState struct {
-	Center Point
+	Center geom.Point
 }
 
 func (s *GameState) Serialize(name string) error {
@@ -40,7 +45,7 @@ func (s *GameState) Serialize(name string) error {
 	if err != nil {
 		return err
 	}
-	return EncodeJSON(path, &s)
+	return zntg.EncodeJSON(path, &s)
 }
 
 func (s *GameState) Deserialize(name string) error {
@@ -48,7 +53,7 @@ func (s *GameState) Deserialize(name string) error {
 	if err != nil {
 		return err
 	}
-	return DecodeJSON(path, &s)
+	return zntg.DecodeJSON(path, &s)
 }
 
 func SaveGameName() string { return "savegame.json" }

iconbutton.go

@@ -1,125 +1,47 @@
 package tins2020
 
 import (
-	"github.com/veandco/go-sdl2/sdl"
+	"image/color"
-)
 
-type HoverEffect int
+	"opslag.de/schobers/zntg"
-
+	"opslag.de/schobers/zntg/ui"
-const (
-	HoverEffectLigthen HoverEffect = iota
-	HoverEffectColor
 )
 
 type IconButton struct {
-	ControlBase
+	ui.Button
 
-	Icon         string
+	Active bool
-	IconDisabled string
-	IconHeight   int32
-	IconScale    Scale
-	IconWidth    int32
-
-	IconActive HoverEffect
-	IconHover  HoverEffect
-
-	Tooltip  Tooltip
-	IsActive bool
 }
 
-func NewIconButton(icon string, onClick EventContextFn) *IconButton {
+func NewIconButton(icon string, click ui.EventEmptyFn) *IconButton {
-	return &IconButton{
+	b := &IconButton{
-		ControlBase: ControlBase{
+		Button: ui.Button{
-			OnLeftMouseButtonClick: onClick,
-		},
 			Icon:       icon,
+			IconHeight: 48,
+			Type:       ui.ButtonTypeText,
+			HoverColor: hoverTransparentColor,
+		},
 	}
+	b.Font.Color = color.White
+	b.ButtonClicked().AddHandler(func(ctx ui.Context, _ ui.ControlClickedArgs) { click(ctx) })
+	return b
 }
 
-func NewIconButtonConfigure(icon string, onClick EventContextFn, configure func(*IconButton)) *IconButton {
+func NewIconButtonConfigure(icon string, click ui.EventEmptyFn, configure func(*IconButton)) *IconButton {
-	button := NewIconButton(icon, onClick)
+	button := NewIconButton(icon, click)
 	configure(button)
 	return button
 }
 
-func (b *IconButton) activeTexture(ctx *Context) *Texture {
+var hoverTransparentColor = zntg.MustHexColor(`#FFFFFF1F`)
-	if b.IsDisabled {
+
-		texture := ctx.Textures.Texture(b.IconDisabled)
+func (b *IconButton) Render(ctx ui.Context) {
-		if texture != nil {
+	b.RenderActive(ctx)
-			return texture
+	b.Button.Render(ctx)
 }
 
-		texture = ctx.Textures.Texture(b.Icon)
+func (b *IconButton) RenderActive(ctx ui.Context) {
-		if len(b.IconDisabled) == 0 {
+	if b.Active && !b.Disabled && !b.IsOver() {
-			return texture
+		ctx.Renderer().FillRectangle(b.Bounds(), hoverTransparentColor)
-		}
-		color, err := HexColor(b.IconDisabled)
-		if err == nil {
-			texture.SetColor(color)
-		}
-		return texture
-	}
-	return ctx.Textures.Texture(b.Icon)
-}
-
-func (b *IconButton) Arrange(ctx *Context, bounds Rectangle) {
-	b.ControlBase.Arrange(ctx, bounds)
-	b.Tooltip.Arrange(ctx, bounds)
-}
-
-func (b *IconButton) Handle(ctx *Context, event sdl.Event) bool {
-	if b.ControlBase.Handle(ctx, event) {
-		return true
-	}
-	if b.Tooltip.Handle(ctx, event) {
-		return true
-	}
-	return false
-}
-
-func (b *IconButton) Init(ctx *Context) error {
-	if err := b.ControlBase.Init(ctx); err != nil {
-		return err
-	}
-	if err := b.Tooltip.Init(ctx); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (b *IconButton) Render(ctx *Context) {
-	iconTexture := b.activeTexture(ctx)
-
-	hover := b.IsMouseOver && !b.IsDisabled
-	if (hover && b.IconHover == HoverEffectColor) || (b.IsActive && b.IconActive == HoverEffectColor) {
-		iconTexture.SetColor(MustHexColor("#15569F"))
-	}
-
-	if b.IconScale == ScaleCenter {
-		size := iconTexture.Size()
-		if b.IconWidth != 0 {
-			size = Pt(b.IconWidth, b.IconWidth*size.Y/size.X)
-		} else if b.IconHeight != 0 {
-			size = Pt(b.IconHeight*size.X/size.Y, b.IconHeight)
-		}
-		iconTexture.CopyResize(ctx.Renderer, Rect(b.Bounds.X+(b.Bounds.W-size.X)/2, b.Bounds.Y+(b.Bounds.H-size.Y)/2, size.X, size.Y))
-	} else {
-		iconTexture.CopyResize(ctx.Renderer, b.Bounds)
-	}
-	if (hover && b.IconHover == HoverEffectLigthen) || (b.IsActive && b.IconActive == HoverEffectLigthen) {
-		SetDrawColor(ctx.Renderer, TransparentWhite)
-		ctx.Renderer.FillRect(b.Bounds.SDLPtr())
-	}
-	iconTexture.SetColor(White)
-
-	if len(b.Tooltip.Text) > 0 && b.IsMouseOver {
-		b.Tooltip.Render(ctx)
 	}
 }
-
-type Scale int
-
-const (
-	ScaleCenter Scale = iota
-	ScaleStretch
-)

img/color.go

@@ -1,62 +0,0 @@
-package img
-
-import (
-	"errors"
-	"image/color"
-	"regexp"
-)
-
-var hexColorRE = regexp.MustCompile(`^#?([0-9A-Fa-f]{2})-?([0-9A-Fa-f]{2})-?([0-9A-Fa-f]{2})-?([0-9A-Fa-f]{2})?$`)
-
-func HexColor(s string) (color.RGBA, error) {
-	match := hexColorRE.FindStringSubmatch(s)
-	if match == nil {
-		return color.RGBA{}, errors.New("invalid color format")
-	}
-	values, err := HexToInts(match[1:]...)
-	if err != nil {
-		return color.RGBA{}, err
-	}
-	a := 255
-	if len(match[4]) > 0 {
-		a = values[3]
-	}
-	return color.RGBA{R: uint8(values[0]), G: uint8(values[1]), B: uint8(values[2]), A: uint8(a)}, nil
-}
-
-func MustHexColor(s string) color.RGBA {
-	color, err := HexColor(s)
-	if err != nil {
-		panic(err)
-	}
-	return color
-}
-
-func HexToInt(s string) (int, error) {
-	var i int
-	for _, c := range s {
-		i *= 16
-		if c >= '0' && c <= '9' {
-			i += int(c - '0')
-		} else if c >= 'A' && c <= 'F' {
-			i += int(c - 'A' + 10)
-		} else if c >= 'a' && c <= 'f' {
-			i += int(c - 'a' + 10)
-		} else {
-			return 0, errors.New("hex digit not supported")
-		}
-	}
-	return i, nil
-}
-
-func HexToInts(s ...string) ([]int, error) {
-	ints := make([]int, len(s))
-	for i, s := range s {
-		value, err := HexToInt(s)
-		if err != nil {
-			return nil, err
-		}
-		ints[i] = value
-	}
-	return ints, nil
-}

img/io.go

@@ -1,29 +0,0 @@
-package img
-
-import (
-	"image"
-	"image/png"
-	"os"
-)
-
-func EncodePNG(path string, im image.Image) error {
-	dst, err := os.Create(path)
-	if err != nil {
-		return err
-	}
-	defer dst.Close()
-	return png.Encode(dst, im)
-}
-
-func DecodeImage(path string) (image.Image, error) {
-	f, err := os.Open(path)
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-	im, _, err := image.Decode(f)
-	if err != nil {
-		return nil, err
-	}
-	return im, nil
-}

intro.go

@@ -1,13 +1,19 @@
 package tins2020
 
-type Intro struct {
+import (
-	LargeDialog
+	"image/color"
 
-	welcome Paragraph
+	"opslag.de/schobers/zntg/ui"
+)
+
+type Intro struct {
+	ui.Paragraph
 }
 
-func (i *Intro) Init(ctx *Context) error {
+func NewIntro() *LargeDialog {
-	i.welcome.Text =
+	i := &Intro{}
+	i.Font.Color = color.White
+	i.Text =
 		"Welcome to Botanim!\n\n" +
 			"In Botanim you play the role of botanist and your goal is to cultivate flowers in an open landscape.\n\n" +
 			"Flowers can only grow (well) in certain climates based on two properties: humidity and temperature. Watch out for existing vegetation to get an idea how humid the land is and check the appearance of the tile to see how hot it is. When well placed your planted flower will spread soon but an odd choice might kill your flower almost instantly. So choose carefully. When the flower spread significantly you can harvest flowers again to collect more money.\n\n" +
@@ -21,7 +27,5 @@ func (i *Intro) Init(ctx *Context) error {
 			" - W, A, S, D keys or CTRL + left mouse button or middle mouse button: pans landscape\n" +
 			"\n" +
 			"Have fun playing!"
-	i.SetContent(&i.welcome)
+	return NewLargeDialog("Botanim", i)
-
-	return i.LargeDialog.Init(ctx)
 }

io.go

@@ -1,50 +1,11 @@
 package tins2020
 
 import (
-	"encoding/json"
+	"opslag.de/schobers/zntg"
-	"os"
-	"path/filepath"
 )
 
-func DecodeJSON(path string, v interface{}) error {
+const appName = "tins2020_botanim"
-	f, err := os.Open(path)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-	err = json.NewDecoder(f).Decode(v)
-	if err != nil {
-		return err
-	}
-	return nil
-}
 
-func EncodeJSON(path string, v interface{}) error {
+func UserDir() (string, error) { return zntg.UserDir(appName) }
-	f, err := os.Create(path)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-	return json.NewEncoder(f).Encode(v)
-}
 
-func UserDir() (string, error) {
+func UserFile(name string) (string, error) { return zntg.UserFile(appName, name) }
-	config, err := os.UserConfigDir()
-	if err != nil {
-		return "", err
-	}
-	dir := filepath.Join(config, "tins2020_botanim")
-	err = os.MkdirAll(dir, 0777)
-	if err != nil {
-		return "", err
-	}
-	return dir, nil
-}
-
-func UserFile(name string) (string, error) {
-	dir, err := UserDir()
-	if err != nil {
-		return "", err
-	}
-	return filepath.Join(dir, name), nil
-}

label.go

@@ -1,85 +0,0 @@
-package tins2020
-
-import (
-	"strings"
-)
-
-type Label struct {
-	ControlBase
-
-	Text      string
-	Alignment TextAlignment
-}
-
-func (l *Label) Render(ctx *Context) {
-	font := ctx.Fonts.Font(l.ActualFontName())
-	color := l.ActualForeground()
-	bottom := l.Bounds.Y + l.Bounds.H
-	switch l.Alignment {
-	case TextAlignmentCenter:
-		font.RenderCopyAlign(ctx.Renderer, l.Text, Pt(l.Bounds.X+l.Bounds.W/2, bottom), color, TextAlignmentCenter)
-	case TextAlignmentLeft:
-		font.RenderCopyAlign(ctx.Renderer, l.Text, Pt(l.Bounds.X, bottom), color, TextAlignmentLeft)
-	case TextAlignmentRight:
-		font.RenderCopyAlign(ctx.Renderer, l.Text, Pt(l.Bounds.X+l.Bounds.W, bottom), color, TextAlignmentRight)
-	}
-}
-
-type Paragraph struct {
-	Label
-}
-
-func (p *Paragraph) Render(ctx *Context) {
-	font := ctx.Fonts.Font(p.ActualFontName())
-	color := p.ActualForeground()
-	fontHeight := int32(font.Height())
-	lines := strings.Split(p.Text, "\n")
-
-	measure := func(s string) int32 {
-		w, _, _ := font.SizeUTF8(s)
-		return int32(w)
-	}
-
-	spaces := func(s string) []int {
-		var spaces []int
-		offset := 0
-		for {
-			space := strings.Index(s[offset:], " ")
-			if space == -1 {
-				return spaces
-			}
-			offset += space
-			spaces = append(spaces, offset)
-			offset++
-		}
-	}
-
-	fit := func(s string) string {
-		if measure(s) < p.Bounds.W {
-			return s
-		}
-		spaces := spaces(s)
-		for split := len(spaces) - 1; split >= 0; split-- {
-			clipped := s[:spaces[split]]
-			if measure(clipped) < p.Bounds.W {
-				return clipped
-			}
-		}
-		return s
-	}
-
-	offset := p.Bounds.Y
-	for _, line := range lines {
-		if len(line) == 0 {
-			offset += fontHeight
-			continue
-		}
-
-		for len(line) > 0 {
-			offset += fontHeight
-			clipped := fit(line)
-			line = strings.TrimLeft(line[len(clipped):], " ")
-			font.RenderCopy(ctx.Renderer, clipped, Pt(p.Bounds.X, offset), color)
-		}
-	}
-}

largedialog.go

@@ -1,108 +1,100 @@
 package tins2020
 
-import "github.com/veandco/go-sdl2/sdl"
+import (
+	"image/color"
 
-type DialogBase struct {
+	"opslag.de/schobers/geom"
-	Container
+	"opslag.de/schobers/zntg"
+	"opslag.de/schobers/zntg/ui"
+)
 
-	content Proxy
+const titleBarHeight = 64
-	onShow  *Events
-	close   EventFn
-}
-
-type Dialog interface {
-	CloseDialog()
-	OnShow() EventHandler
-	ShowDialog(*Context, EventFn)
-}
-
-func (d *DialogBase) CloseDialog() {
-	close := d.close
-	if close != nil {
-		close()
-	}
-}
-
-func (d *DialogBase) Init(ctx *Context) error {
-	d.AddChild(&d.content)
-	return d.Container.Init(ctx)
-}
-
-func (d *DialogBase) OnShow() EventHandler {
-	if d.onShow == nil {
-		d.onShow = NewEvents()
-	}
-	return d.onShow
-}
-
-func (d *DialogBase) SetContent(control Control) {
-	d.content.Proxied = control
-}
-
-func (d *DialogBase) ShowDialog(ctx *Context, close EventFn) {
-	d.close = close
-	if d.onShow != nil {
-		d.onShow.Notify(ctx)
-	}
-}
 
 type LargeDialog struct {
-	DialogBase
+	ui.StackPanel
 
-	title Label
+	titleBar *LargeDialogTitleBar
-	close IconButton
+	content  ui.Proxy
+
+	closeRequested ui.Events
 }
 
-func (d *LargeDialog) Arrange(ctx *Context, bounds Rectangle) {
+func NewLargeDialog(title string, content ui.Control) *LargeDialog {
-	const titleHeight = 64
+	dialog := &LargeDialog{}
-	d.ControlBase.Arrange(ctx, bounds)
+
-	d.title.Arrange(ctx, Rect(bounds.X, bounds.Y, bounds.W, titleHeight))
+	dialog.Orientation = ui.OrientationVertical
-	d.close.Arrange(ctx, Rect(bounds.W-64, 0, 64, 64))
+	dialog.titleBar = NewLargeDialogTitleBar(title, func(ctx ui.Context, state interface{}) {
-	d.content.Arrange(ctx, Rect(bounds.X+titleHeight, 96, bounds.W-2*titleHeight, bounds.H-titleHeight))
+		dialog.closeRequested.Notify(ctx, state)
+	})
+	dialog.content.Content = ui.Margins(content, titleBarHeight, 20, titleBarHeight, 0)
+	dialog.Children = []ui.Control{dialog.titleBar, &dialog.content}
+
+	return dialog
 }
 
-func (d *LargeDialog) Init(ctx *Context) error {
+func (d *LargeDialog) CloseRequested() ui.EventHandler { return &d.closeRequested }
-	d.title.Text = "Botanim"
-	d.title.FontName = "title"
-	d.title.Alignment = TextAlignmentCenter
 
-	d.close = IconButton{
+func (d *LargeDialog) Handle(ctx ui.Context, e ui.Event) bool {
-		Icon:      "control-cancel",
+	if d.StackPanel.Handle(ctx, e) {
-		IconHover: HoverEffectColor,
-		IconWidth: 32,
-	}
-	d.close.OnLeftMouseButtonClick = EmptyEvent(d.CloseDialog)
-	d.AddChild(&d.title)
-	d.AddChild(&d.close)
-	return d.DialogBase.Init(ctx)
-}
-
-func (d *LargeDialog) Handle(ctx *Context, event sdl.Event) bool {
-	if d.DialogBase.Handle(ctx, event) {
 		return true
 	}
 
-	switch e := event.(type) {
+	switch e := e.(type) {
-	case *sdl.KeyboardEvent:
+	case *ui.KeyDownEvent:
-		if e.Type == sdl.KEYDOWN {
+		switch e.Key {
-			switch e.Keysym.Sym {
+		case ui.KeyEscape:
-			case sdl.K_ESCAPE:
+			d.closeRequested.Notify(ctx, nil)
-				d.CloseDialog()
 			return true
-			case sdl.K_RETURN:
+		case ui.KeyEnter:
-				d.CloseDialog()
+			d.closeRequested.Notify(ctx, nil)
 			return true
 		}
 	}
-	}
 	return false
 }
 
-func (d *LargeDialog) Render(ctx *Context) {
+func (d *LargeDialog) Hidden() { d.content.Hidden() }
-	SetDrawColor(ctx.Renderer, MustHexColor("#356DAD"))
-	ctx.Renderer.FillRect(d.Bounds.SDLPtr())
 
-	d.DialogBase.Render(ctx)
+func (d *LargeDialog) Render(ctx ui.Context) {
+	ctx.Renderer().Clear(zntg.MustHexColor("#356DAD"))
+	d.StackPanel.Render(ctx)
 }
 
-func (d *LargeDialog) SetCaption(s string) { d.title.Text = s }
+func (d *LargeDialog) Shown() { d.content.Shown() }
+
+type LargeDialogTitleBar struct {
+	ui.ContainerBase
+
+	title ui.Label
+	close IconButton
+}
+
+func NewLargeDialogTitleBar(title string, closeRequested ui.EventFn) *LargeDialogTitleBar {
+	titleBar := &LargeDialogTitleBar{}
+	titleBar.Children = []ui.Control{&titleBar.title, &titleBar.close}
+	titleBar.close.ButtonClicked().AddHandler(func(ctx ui.Context, args ui.ControlClickedArgs) {
+		closeRequested(ctx, args)
+	})
+	titleBar.title.Font.Color = color.White
+	titleBar.title.Font.Name = "title"
+	titleBar.title.Text = title
+	titleBar.title.TextAlignment = ui.AlignCenter
+
+	titleBar.close.Icon = "control-cancel"
+	titleBar.close.IconHeight = 32
+	titleBar.close.Type = ui.ButtonTypeIcon
+	titleBar.close.HoverColor = zntg.MustHexColor(`#ABCAED`)
+
+	return titleBar
+}
+
+func (b *LargeDialogTitleBar) Arrange(ctx ui.Context, bounds geom.RectangleF32, offset geom.PointF32, parent ui.Control) {
+	b.ControlBase.Arrange(ctx, bounds, offset, parent)
+	b.title.Arrange(ctx, bounds, offset, parent)
+	height := bounds.Dy()
+	b.close.Arrange(ctx, geom.RectRelF32(bounds.Max.X-height, bounds.Min.Y, height, height), offset, parent)
+}
+
+func (b *LargeDialogTitleBar) DesiredSize(ctx ui.Context, size geom.PointF32) geom.PointF32 {
+	return geom.PtF32(size.X, titleBarHeight)
+}

map.go

@@ -1,5 +1,7 @@
 package tins2020
 
+import "opslag.de/schobers/geom"
+
 type Map struct {
 	Temp    NoiseMap
 	Humid   NoiseMap
@@ -7,32 +9,32 @@ type Map struct {
 	PlaceX  NoiseMap // displacement map of props
 	PlaceY  NoiseMap
 
-	Center  Point
+	Center  geom.Point
-	Flowers map[Point]Flower
+	Flowers map[geom.Point]Flower
 }
 
-func (m *Map) AddFlower(pos Point, id string, traits FlowerTraits) {
+func (m *Map) AddFlower(pos geom.Point, id string, traits FlowerTraits) {
 	m.Flowers[pos] = m.NewFlower(pos, id, traits)
 }
 
-func (m *Map) FlowersOnAdjacentTiles(pos Point) int {
+func (m *Map) FlowersOnAdjacentTiles(pos geom.Point) int {
 	var count int
-	if _, ok := m.Flowers[Pt(pos.X+1, pos.Y)]; ok {
+	if _, ok := m.Flowers[geom.Pt(pos.X+1, pos.Y)]; ok {
 		count++
 	}
-	if _, ok := m.Flowers[Pt(pos.X-1, pos.Y)]; ok {
+	if _, ok := m.Flowers[geom.Pt(pos.X-1, pos.Y)]; ok {
 		count++
 	}
-	if _, ok := m.Flowers[Pt(pos.X, pos.Y+1)]; ok {
+	if _, ok := m.Flowers[geom.Pt(pos.X, pos.Y+1)]; ok {
 		count++
 	}
-	if _, ok := m.Flowers[Pt(pos.X, pos.Y-1)]; ok {
+	if _, ok := m.Flowers[geom.Pt(pos.X, pos.Y-1)]; ok {
 		count++
 	}
 	return count
 }
 
-func (m *Map) DigFlower(pos Point) string {
+func (m *Map) DigFlower(pos geom.Point) string {
 	flower, ok := m.Flowers[pos]
 	if !ok {
 		return ""
@@ -41,12 +43,12 @@ func (m *Map) DigFlower(pos Point) string {
 	return flower.ID
 }
 
-func (m *Map) HasFlower(pos Point) bool {
+func (m *Map) HasFlower(pos geom.Point) bool {
 	_, ok := m.Flowers[pos]
 	return ok
 }
 
-func (m *Map) NewFlower(pos Point, id string, traits FlowerTraits) Flower {
+func (m *Map) NewFlower(pos geom.Point, id string, traits FlowerTraits) Flower {
 	flower := Flower{
 		ID:     id,
 		Traits: traits,

noisemap.go

@@ -14,7 +14,7 @@ func clipNormalized(x float64) float64 {
 
 type NoiseMap interface {
 	Seed() int64
-	Value(x, y int32) float64
+	Value(x, y int) float64
 }
 
 func NewNoiseMap(seed int64) NoiseMap {
@@ -33,7 +33,7 @@ type noiseMap struct {
 }
 
 // Value generates the noise value for an x/y pair.
-func (m noiseMap) Value(x, y int32) float64 {
+func (m noiseMap) Value(x, y int) float64 {
 	value := m.noise.Noise2D(float64(x)*.01, float64(y)*.01, m.alpha, m.beta, m.harmonics)*.565 + .5
 	return clipNormalized(value)
 }
@@ -49,7 +49,7 @@ type randomNoiseMap struct {
 }
 
 // Value generates the noise value for an x/y pair.
-func (m randomNoiseMap) Value(x, y int32) float64 {
+func (m randomNoiseMap) Value(x, y int) float64 {
 	value := m.Noise2D(float64(x)*.53, float64(y)*.53, 1.01, 2, 2)*.5 + .5
 	return clipNormalized(value)
 }

point.go

@@ -1,42 +0,0 @@
-package tins2020
-
-import "github.com/veandco/go-sdl2/sdl"
-
-type Point struct {
-	sdl.Point
-}
-
-func (p Point) Add(q Point) Point { return Pt(p.X+q.X, p.Y+q.Y) }
-
-func (p Point) In(r Rectangle) bool { return r.IsPointInsidePt(p) }
-
-func (p Point) Sub(q Point) Point { return Pt(p.X-q.X, p.Y-q.Y) }
-
-func (p Point) ToPtF() PointF { return PtF(float32(p.X), float32(p.Y)) }
-
-type PointF struct {
-	sdl.FPoint
-}
-
-func (p PointF) Add(q PointF) PointF {
-	return PtF(p.X+q.X, p.Y+q.Y)
-}
-
-func (p PointF) Mul(f float32) PointF {
-	return PtF(f*p.X, f*p.Y)
-}
-
-func (p PointF) Sub(q PointF) PointF { return PtF(p.X-q.X, p.Y-q.Y) }
-
-func Pt(x, y int32) Point     { return Point{sdl.Point{X: x, Y: y}} }
-func PtF(x, y float32) PointF { return PointF{sdl.FPoint{X: x, Y: y}} }
-
-func PtPtr(x, y int32) *Point {
-	p := Pt(x, y)
-	return &p
-}
-
-func PtFPtr(x, y float32) *PointF {
-	p := PtF(x, y)
-	return &p
-}

projection.go

@@ -1,130 +0,0 @@
-package tins2020
-
-import (
-	"log"
-
-	"github.com/veandco/go-sdl2/sdl"
-)
-
-func mapToTile(q PointF) Point {
-	return Pt(int32(Round32(q.X)), int32(Round32(q.Y)))
-}
-
-type projection struct {
-	center  PointF
-	zoom    float32
-	zoomInv float32
-
-	windowInteractRect Rectangle
-	windowVisibleRect  Rectangle
-	tileScreenDelta    PointF
-	tileScreenDeltaInv PointF
-	tileScreenOffset   Point
-	tileScreenSize     Point
-	tileFitScreenSize  Point
-	windowCenter       Point
-}
-
-func newProjection() projection {
-	return projection{zoom: 1, tileScreenDelta: PtF(64, 32), tileScreenDeltaInv: PtF(1./64, 1./32)}
-}
-
-func (p *projection) mapToScreen(x, y int32) Point {
-	return p.mapToScreenF(float32(x), float32(y))
-}
-
-func (p *projection) mapToScreenF(x, y float32) Point {
-	translated := PtF(x-p.center.X, y-p.center.Y)
-	return Pt(p.windowCenter.X+int32((translated.X-translated.Y)*64*p.zoom), p.windowCenter.Y+int32((translated.X+translated.Y)*32*p.zoom))
-}
-
-func (p *projection) screenToMap(x, y int32) PointF {
-	pos := p.screenToMapRel(x-p.windowCenter.X, y-p.windowCenter.Y)
-	return p.center.Add(pos)
-}
-
-func (p *projection) screenToMapInt(x, y int32) Point {
-	pos := p.screenToMap(x, y)
-	return mapToTile(pos)
-}
-
-func (p *projection) screenToMapRel(x, y int32) PointF {
-	normX := p.zoomInv * float32(x)
-	normY := p.zoomInv * float32(y)
-	return PtF(.5*(p.tileScreenDeltaInv.X*normX+p.tileScreenDeltaInv.Y*normY), .5*(-p.tileScreenDeltaInv.X*normX+p.tileScreenDeltaInv.Y*normY))
-}
-
-func (p *projection) screenToTileFitRect(pos Point) Rectangle {
-	return Rect(pos.X-p.tileFitScreenSize.X, pos.Y-p.tileFitScreenSize.Y, 2*p.tileFitScreenSize.X, 2*p.tileFitScreenSize.Y)
-}
-
-func (p *projection) screenToTileRect(pos Point) Rectangle {
-	return Rect(pos.X-p.tileScreenOffset.X, pos.Y-p.tileScreenOffset.Y, p.tileScreenSize.X, p.tileScreenSize.Y)
-}
-
-func (p *projection) update(renderer *sdl.Renderer) {
-	p.zoomInv = 1 / p.zoom
-
-	p.tileScreenOffset = Pt(int32(p.zoom*64), int32(p.zoom*112))
-	p.tileScreenSize = Pt(int32(p.zoom*128), int32(p.zoom*160))
-	p.tileFitScreenSize = Pt(int32(p.zoom*64), int32(p.zoom*32))
-
-	windowW, windowH, err := renderer.GetOutputSize()
-	if err != nil {
-		log.Fatal(err)
-	}
-	p.windowCenter = Pt(windowW/2, windowH/2)
-	p.windowInteractRect = RectAbs(buttonBarWidth, 64, windowW-buttonBarWidth, windowH)
-	p.windowVisibleRect = RectAbs(buttonBarWidth, 0, windowW-buttonBarWidth, windowH+p.tileScreenSize.Y) // Adding a tile height to the bottom for trees that stick out from the cells below.
-}
-
-func (p *projection) visibleTiles(action func(int32, int32, Point)) {
-	visible := p.windowVisibleRect
-	topLeft := p.screenToMap(visible.X, visible.Y)
-	topRight := p.screenToMap(visible.X+visible.W, visible.Y)
-	bottomLeft := p.screenToMap(visible.X, visible.Y+visible.H)
-	bottomRight := p.screenToMap(visible.X+visible.W, visible.Y+visible.H)
-	minY, maxY := int32(Floor32(topRight.Y)), int32(Ceil32(bottomLeft.Y))
-	minX, maxX := int32(Floor32(topLeft.X)), int32(Ceil32(bottomRight.X))
-	for y := minY; y <= maxY; y++ {
-		for x := minX; x <= maxX; x++ {
-			pos := p.mapToScreen(x, y)
-			rectFit := p.screenToTileFitRect(pos)
-			if rectFit.X+rectFit.W < visible.X || rectFit.Y+rectFit.H < visible.Y {
-				continue
-			}
-			if rectFit.X > visible.X+visible.W || rectFit.Y > visible.Y+visible.H {
-				break
-			}
-			action(x, y, pos)
-		}
-	}
-}
-
-func (p *projection) Pan(ctx *Context, delta PointF) {
-	p.center = p.center.Add(delta.Mul(p.zoomInv))
-	p.update(ctx.Renderer)
-}
-
-func (p *projection) SetZoom(ctx *Context, center PointF, zoom float32) {
-	if p.zoom == zoom {
-		return
-	}
-	p.center = center.Sub(center.Sub(p.center).Mul(p.zoom / zoom))
-	p.zoom = zoom
-	p.update(ctx.Renderer)
-}
-
-func (p *projection) ZoomOut(ctx *Context, center PointF) {
-	if p.zoom <= .25 {
-		return
-	}
-	p.SetZoom(ctx, center, .5*p.zoom)
-}
-
-func (p *projection) ZoomIn(ctx *Context, center PointF) {
-	if p.zoom >= 2 {
-		return
-	}
-	p.SetZoom(ctx, center, 2*p.zoom)
-}

proxy.go

@@ -1,48 +0,0 @@
-package tins2020
-
-import "github.com/veandco/go-sdl2/sdl"
-
-var _ Control = &Proxy{}
-
-type Proxy struct {
-	Proxied Control
-
-	bounds Rectangle
-}
-
-func (p *Proxy) Arrange(ctx *Context, bounds Rectangle) {
-	p.bounds = bounds
-	if p.Proxied == nil {
-		return
-	}
-	p.Proxied.Arrange(ctx, bounds)
-}
-
-func (p *Proxy) Handle(ctx *Context, event sdl.Event) bool {
-	if p.Proxied == nil {
-		return false
-	}
-	return p.Proxied.Handle(ctx, event)
-}
-
-func (p *Proxy) Init(ctx *Context) error {
-	if p.Proxied == nil {
-		return nil
-	}
-	return p.Proxied.Init(ctx)
-}
-
-func (p *Proxy) Render(ctx *Context) {
-	if p.Proxied == nil {
-		return
-	}
-	p.Proxied.Render(ctx)
-}
-
-func (p *Proxy) SetContent(ctx *Context, content Control) {
-	p.Proxied = content
-	if content == nil {
-		return
-	}
-	content.Arrange(ctx, p.bounds)
-}

rect.go

@@ -1,32 +0,0 @@
-package tins2020
-
-import "github.com/veandco/go-sdl2/sdl"
-
-type Rectangle struct {
-	sdl.Rect
-}
-
-func RectAbs(x1, y1, x2, y2 int32) Rectangle {
-	if x1 > x2 {
-		x1, x2 = x2, x1
-	}
-	if y1 > y2 {
-		y1, y2 = y2, y1
-	}
-	return Rectangle{sdl.Rect{X: x1, Y: y1, W: x2 - x1, H: y2 - y1}}
-}
-
-func Rect(x, y, w, h int32) Rectangle { return Rectangle{sdl.Rect{X: x, Y: y, W: w, H: h}} }
-
-func (r Rectangle) Bottom() int32 { return r.Y + r.H }
-
-func (r Rectangle) IsPointInside(x, y int32) bool {
-	return x >= r.X && x < r.X+r.W && y >= r.Y && y < r.Y+r.H
-}
-
-func (r Rectangle) IsPointInsidePt(p Point) bool { return r.IsPointInside(p.X, p.Y) }
-
-func (r Rectangle) Right() int32 { return r.X + r.W }
-
-func (r Rectangle) SDL() sdl.Rect     { return r.Rect }
-func (r Rectangle) SDLPtr() *sdl.Rect { return &r.Rect }

research.go

@@ -2,205 +2,76 @@ package tins2020
 
 import (
 	"fmt"
-	"math"
 	"math/rand"
 	"strconv"
 	"strings"
 	"time"
 
-	"github.com/veandco/go-sdl2/sdl"
+	"opslag.de/schobers/geom"
+
+	"opslag.de/schobers/zntg"
+	"opslag.de/schobers/zntg/ui"
 )
 
 type Research struct {
-	Container
+	ui.StackPanel
 
 	game     *Game
 	botanist Specialist
 	farmer   Specialist
 
-	typing     string
+	description ui.Paragraph
-	digitCount int
+	specialists ui.Paragraph
+	dial        *Dial
+	input       ui.Label
 
-	close       func()
+	animate        zntg.Animation
-	description Paragraph
+	closeRequested ui.Events
-	specialists Paragraph
-	input       Label
-	digits      []Digit
-	animate     Animation
 }
 
-func NewResearch(game *Game) Control {
+type Dialer interface {
-	research := &Research{
+	CanUserType(int) bool
-		game:    game,
+	UserGaveWrongInput()
-		animate: NewAnimation(20 * time.Millisecond),
+	UserTyped(ui.Context, int)
 }
-	dialog := &LargeDialog{}
+
-	dialog.SetCaption("Research")
+func NewResearch(game *Game) *LargeDialog {
-	dialog.SetContent(research)
+	research := &Research{game: game}
-	dialog.OnShow().RegisterItf(func(state interface{}) {
+	research.animate.Interval = 20 * time.Millisecond
-		research.onShow(state.(*Context))
+	research.animate.Start()
-	})
+
-	research.close = func() { dialog.CloseDialog() }
+	research.description.Text = "Call a specialist to conduct research with."
+	research.dial = NewDial(research)
+	research.Children = []ui.Control{&research.description, &research.specialists, research.dial, &research.input}
+
+	dialog := NewLargeDialog("Research", ui.Stretch(research))
+	research.closeRequested.AddHandlerEmpty(func(ctx ui.Context) { dialog.closeRequested.Notify(ctx, nil) })
 	return dialog
 }
 
-type Digit struct {
-	ControlBase
-
-	Value string
-
-	highlight int
-}
-
-func (d *Digit) Blink() {
-	d.highlight = 4
-}
-
-func (d *Digit) Render(ctx *Context) {
-	font := ctx.Fonts.Font("title")
-	color := White
-	if d.highlight > 0 {
-		color = MustHexColor("#15569F")
-	}
-	font.RenderCopyAlign(ctx.Renderer, d.Value, Pt(d.Bounds.X+d.Bounds.W/2, d.Bounds.Y+int32(font.Height())), color, TextAlignmentCenter)
-}
-
-func (d *Digit) Tick() {
-	if d.highlight > 0 {
-		d.highlight--
-	}
-}
-
 type Specialist struct {
 	Cost   int
 	Number string
 }
 
-func (r *Research) Init(ctx *Context) error {
+func (r *Research) Arrange(ctx ui.Context, bounds geom.RectangleF32, offset geom.PointF32, parent ui.Control) {
-	r.AddChild(&r.description)
+	r.input.TextAlignment = ui.AlignCenter
-	r.AddChild(&r.specialists)
+	r.StackPanel.Arrange(ctx, bounds, offset, parent)
-	r.AddChild(&r.input)
-
-	r.description.Text = "Call a specialist to conduct research with."
-	r.digits = make([]Digit, 10)
-	for i := range r.digits {
-		j := i
-		r.digits[i].Value = strconv.Itoa(i)
-		r.digits[i].OnLeftMouseButtonClick = func(*Context) {
-			r.userTyped(j)
-		}
-		r.AddChild(&r.digits[i])
 }
 
-	return nil
+func (r *Research) CanUserType(digit int) bool {
+	typing := strconv.Itoa(digit)
+	return strings.HasPrefix(r.botanist.Number, r.input.Text+typing)
 }
 
-func (r *Research) Arrange(ctx *Context, bounds Rectangle) {
+func (r *Research) Hidden() {}
-	r.Container.Arrange(ctx, bounds)
-	r.specialists.Arrange(ctx, Rect(r.Bounds.X, r.Bounds.Y+40, r.Bounds.W, r.Bounds.H-40))
-	r.input.Arrange(ctx, Rect(r.Bounds.X, r.Bounds.X+r.Bounds.H-48, r.Bounds.W, 24))
-	r.input.Alignment = TextAlignmentCenter
 
-	center := Pt(r.Bounds.X+r.Bounds.W/2, r.Bounds.Y+r.Bounds.H/2)
+func (r *Research) Render(ctx ui.Context) {
-
+	r.animate.AnimateFn(r.dial.Tick)
-	distance := float64(bounds.H) * .3
+	r.StackPanel.Render(ctx)
-	for i := range r.digits {
-		angle := (float64((10-i)%10)*0.16 + .2) * math.Pi
-		pos := Pt(int32(distance*math.Cos(angle)), int32(.8*distance*math.Sin(angle)))
-		digitCenter := center.Add(pos)
-		r.digits[i].Arrange(ctx, Rect(digitCenter.X-24, digitCenter.Y-24, 48, 48))
-	}
 }
 
-func (r *Research) userTyped(i int) {
+func (r *Research) Shown() {
-	r.digits[i].Blink()
-	digit := strconv.Itoa(i)
-	if len(r.typing) == 0 || digit != r.typing {
-		r.typing = digit
-		r.digitCount = 1
-	} else {
-		r.digitCount++
-	}
-
-	if !strings.HasPrefix(r.botanist.Number, r.input.Text+r.typing) {
-		r.input.Text = ""
-		r.typing = ""
-		r.digitCount = 0
-	} else if r.digitCount == i || r.digitCount == 10 {
-		r.input.Text += digit
-		r.typing = ""
-		r.digitCount = 0
-
-		if r.input.Text == r.botanist.Number {
-			r.game.UnlockNextFlower()
-			r.close()
-			r.input.Text = ""
-		}
-	}
-}
-
-func (r *Research) Handle(ctx *Context, event sdl.Event) bool {
-	if r.Container.Handle(ctx, event) {
-		return true
-	}
-	switch e := event.(type) {
-	case *sdl.KeyboardEvent:
-		if e.Type == sdl.KEYDOWN {
-			switch e.Keysym.Sym {
-			case sdl.K_0:
-				r.userTyped(0)
-			case sdl.K_KP_0:
-				r.userTyped(0)
-			case sdl.K_1:
-				r.userTyped(1)
-			case sdl.K_KP_1:
-				r.userTyped(1)
-			case sdl.K_2:
-				r.userTyped(2)
-			case sdl.K_KP_2:
-				r.userTyped(2)
-			case sdl.K_3:
-				r.userTyped(3)
-			case sdl.K_KP_3:
-				r.userTyped(3)
-			case sdl.K_4:
-				r.userTyped(4)
-			case sdl.K_KP_4:
-				r.userTyped(4)
-			case sdl.K_5:
-				r.userTyped(5)
-			case sdl.K_KP_5:
-				r.userTyped(5)
-			case sdl.K_6:
-				r.userTyped(6)
-			case sdl.K_KP_6:
-				r.userTyped(6)
-			case sdl.K_7:
-				r.userTyped(7)
-			case sdl.K_KP_7:
-				r.userTyped(7)
-			case sdl.K_8:
-				r.userTyped(8)
-			case sdl.K_KP_8:
-				r.userTyped(8)
-			case sdl.K_9:
-				r.userTyped(9)
-			case sdl.K_KP_9:
-				r.userTyped(9)
-			}
-		}
-	}
-	return false
-}
-
-func (r *Research) Render(ctx *Context) {
-	for i := range r.digits {
-		r.digits[i].Tick()
-	}
-	r.Container.Render(ctx)
-}
-
-func (r *Research) onShow(ctx *Context) {
 	generateNumber := func() string {
 		var number string
 		for i := 0; i < 3; i++ {
@@ -208,8 +79,9 @@ func (r *Research) onShow(ctx *Context) {
 		}
 		return number
 	}
-	r.digitCount = 0
+
 	r.input.Text = ""
+	r.dial.Reset()
 
 	var specialists string
 	defer func() {
@@ -233,3 +105,16 @@ func (r *Research) onShow(ctx *Context) {
 	specialists += fmt.Sprintf("Botanist: no. %s (unlocks next flower; $ %d)\n", r.botanist.Number, r.botanist.Cost)
 	specialists += "Farmer: no. **unavailable** (fertilizes land; $ ---)\n"
 }
+
+func (r *Research) UserGaveWrongInput() {
+	r.input.Text = ""
+}
+
+func (r *Research) UserTyped(ctx ui.Context, digit int) {
+	r.input.Text += strconv.Itoa(digit)
+	if r.input.Text == r.botanist.Number {
+		r.game.UnlockNextFlower(ctx)
+		r.input.Text = ""
+		r.closeRequested.Notify(ctx, nil)
+	}
+}

resourceloader.go

@@ -4,6 +4,8 @@ import (
 	"bufio"
 	"fmt"
 	"strings"
+
+	"opslag.de/schobers/zntg/ui"
 )
 
 type ResourceLoader struct {
@@ -14,8 +16,8 @@ func NewResourceLoader() *ResourceLoader {
 	return &ResourceLoader{}
 }
 
-func (l *ResourceLoader) parseResourcesFile(res *Resources, name string) error {
+func (l *ResourceLoader) parseResourcesFile(res ui.Resources, name string) error {
-	f, err := res.Fs().Open(name)
+	f, err := res.OpenResource(name)
 	if err != nil {
 		return err
 	}
@@ -36,7 +38,7 @@ func (l *ResourceLoader) parseResourcesFile(res *Resources, name string) error {
 	return nil
 }
 
-func (l *ResourceLoader) LoadFromFile(res *Resources, name string, action func(string, string) error) error {
+func (l *ResourceLoader) LoadFromFile(res ui.Resources, name string, action func(string, string) error) error {
 	err := l.parseResourcesFile(res, name)
 	if err != nil {
 		return err

settings.go

@@ -1,6 +1,11 @@
 package tins2020
 
-import "os"
+import (
+	"os"
+
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg"
+)
 
 type Settings struct {
 	Window WindowSettings
@@ -18,7 +23,7 @@ func (s *Settings) Init() error {
 	if _, err := os.Stat(path); os.IsNotExist(err) {
 		return nil
 	}
-	return DecodeJSON(path, s)
+	return zntg.DecodeJSON(path, s)
 }
 
 func (s *Settings) Store() error {
@@ -26,11 +31,11 @@ func (s *Settings) Store() error {
 	if err != nil {
 		return err
 	}
-	return EncodeJSON(path, s)
+	return zntg.EncodeJSON(path, s)
 }
 
 type WindowSettings struct {
-	Location *Point
+	Location *geom.Point
-	Size     *Point
+	Size     *geom.Point
 	VSync    *bool
 }

terrainrenderer.go

@@ -3,129 +3,127 @@ package tins2020
 import (
 	"fmt"
 
-	"github.com/veandco/go-sdl2/sdl"
+	"opslag.de/schobers/zntg/play"
+
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg/ui"
 )
 
 type terrainRenderer struct {
+	ui.ControlBase
+
 	game           *Game
-	hover   *Point
+	hover          *geom.Point
-	project projection
+	viewBounds     geom.RectangleF32
+	interactBounds geom.RectangleF32
+	isometric      *play.IsometricProjection
 
-	drag Drageable
+	drag ui.Dragable
 }
 
-func NewTerrainRenderer(game *Game) Control {
+func NewTerrainRenderer(game *Game) ui.Control {
-	return &terrainRenderer{game: game, project: newProjection()}
+	renderer := &terrainRenderer{game: game, isometric: play.NewIsometricProjection(geom.PtF32(128, 64), geom.RectF32(0, 0, 100, 100))}
-}
 
-func (r *terrainRenderer) Arrange(ctx *Context, _ Rectangle) {
+	renderer.game.CenterChanged().AddHandler(func(ctx ui.Context, state interface{}) {
-	r.project.update(ctx.Renderer)
+		center := state.(geom.Point)
-}
+		renderer.isometric.MoveCenterTo(center.ToF32())
-
-func (r *terrainRenderer) Init(ctx *Context) error {
-	r.game.CenterChanged().RegisterItf(func(state interface{}) {
-		center := state.(Point)
-		r.project.center = center.ToPtF()
-		r.project.update(ctx.Renderer)
 	})
-	r.project.update(ctx.Renderer)
+	return renderer
-	return nil
 }
 
-func isControlKeyDown() bool {
+func (r *terrainRenderer) Arrange(ctx ui.Context, bounds geom.RectangleF32, _ geom.PointF32, _ ui.Control) {
-	state := sdl.GetKeyboardState()
+	r.viewBounds = geom.RectF32(buttonBarWidth, 0, bounds.Dx()-buttonBarWidth, bounds.Dy())
-	return state[sdl.SCANCODE_LCTRL] == 1 || state[sdl.SCANCODE_RCTRL] == 1 || state[sdl.SCANCODE_LGUI] == 1 || state[sdl.SCANCODE_RGUI] == 1
+	r.isometric.SetViewBounds(r.viewBounds)
+	r.interactBounds = r.viewBounds
+	r.interactBounds.Min.Y += 64
 }
 
-func (r *terrainRenderer) Handle(ctx *Context, event sdl.Event) bool {
+func isControlKeyDown(ctx ui.Context) bool {
+	modifiers := ctx.KeyModifiers()
+	return modifiers&(ui.KeyModifierControl|ui.KeyModifierOSCommand) != 0
+}
+
+func (r *terrainRenderer) Handle(ctx ui.Context, event ui.Event) bool {
 	switch e := event.(type) {
-	case *sdl.MouseButtonEvent:
+	case *ui.MouseButtonDownEvent:
-		if r.project.windowInteractRect.IsPointInside(e.X, e.Y) {
+		pos := e.Pos()
-			if e.Type == sdl.MOUSEBUTTONDOWN {
+		if pos.In(r.interactBounds) {
-				controlKeyDown := isControlKeyDown()
+			controlKeyDown := isControlKeyDown(ctx)
-				if e.Button == sdl.BUTTON_MIDDLE || (e.Button == sdl.BUTTON_LEFT && controlKeyDown) {
+			if e.Button == ui.MouseButtonMiddle || (e.Button == ui.MouseButtonLeft && controlKeyDown) {
-					if !r.drag.IsDragging() {
+				if _, ok := r.drag.IsDragging(); !ok {
-						r.drag.Start(Pt(e.X, e.Y))
+					r.drag.Start(pos)
 				}
 			}
-				if e.Button == sdl.BUTTON_LEFT && !controlKeyDown {
+			if e.Button == ui.MouseButtonLeft && !controlKeyDown {
-					pos := r.project.screenToMapInt(e.X, e.Y)
+				pos := r.isometric.ViewToTileInt(pos)
 				r.game.UserClickedTile(pos)
 			}
-				if e.Button == sdl.BUTTON_RIGHT {
+			if e.Button == ui.MouseButtonRight {
-					if e.Type == sdl.MOUSEBUTTONDOWN {
+				r.game.CancelTool(ctx)
-						r.game.CancelTool()
 			}
 		}
-			}
+	case *ui.MouseButtonUpEvent:
-			if e.Type == sdl.MOUSEBUTTONUP {
+		pos := e.Pos()
-				if r.drag.IsDragging() {
+		if pos.In(r.interactBounds) {
-					r.game.Terrain.Center = mapToTile(r.project.center)
+			if _, ok := r.drag.IsDragging(); ok {
+				r.game.Terrain.Center = r.isometric.TileInt(r.isometric.Center())
 				r.drag.Cancel()
 			}
 		}
-		}
+	case *ui.MouseMoveEvent:
-	case *sdl.MouseMotionEvent:
+		pos := e.Pos()
-		if r.project.windowInteractRect.IsPointInside(e.X, e.Y) {
+		if pos.In(r.interactBounds) {
-			hover := r.project.screenToMapInt(e.X, e.Y)
+			hover := r.isometric.ViewToTileInt(pos)
 			r.hover = &hover
 		} else {
 			r.hover = nil
 		}
-		if r.drag.IsDragging() {
+		if _, ok := r.drag.IsDragging(); ok {
-			delta := r.drag.Move(Pt(e.X, e.Y))
+			delta, _ := r.drag.Move(pos)
-			r.project.center = r.project.center.Sub(r.project.screenToMapRel(delta.X, delta.Y))
+			r.isometric.Pan(r.isometric.ViewToTileRelative(delta.Invert()))
-			r.project.update(ctx.Renderer)
 		}
-	case *sdl.MouseWheelEvent:
 		if r.hover != nil {
-			if e.Y < 0 {
+			if e.MouseWheel < 0 {
-				r.project.ZoomOut(ctx, r.hover.ToPtF())
+				r.isometric.ZoomOut(r.hover.ToF32())
-			} else {
+			} else if e.MouseWheel > 0 {
-				r.project.ZoomIn(ctx, r.hover.ToPtF())
+				r.isometric.ZoomIn(r.hover.ToF32())
 			}
 		}
-	case *sdl.WindowEvent:
+	case *ui.MouseLeaveEvent:
-		if e.Event == sdl.WINDOWEVENT_LEAVE {
 		r.hover = nil
-			r.project.update(ctx.Renderer)
+	case *ui.KeyDownEvent:
-		}
+		switch e.Key {
-	case *sdl.KeyboardEvent:
+		case ui.KeyPadPlus:
-		if e.Type == sdl.KEYDOWN {
+			r.isometric.ZoomIn(r.isometric.Center())
-			switch e.Keysym.Sym {
+		case ui.KeyMinus:
-			case sdl.K_PLUS:
+			r.isometric.ZoomOut(r.isometric.Center())
-				r.project.ZoomIn(ctx, r.project.center)
+		case ui.KeyPadMinus:
-			case sdl.K_KP_PLUS:
+			r.isometric.ZoomOut(r.isometric.Center())
-				r.project.ZoomIn(ctx, r.project.center)
+		case ui.KeyW:
-			case sdl.K_MINUS:
+			r.isometric.Pan(geom.PtF32(-1, -1))
-				r.project.ZoomOut(ctx, r.project.center)
+		case ui.KeyA:
-			case sdl.K_KP_MINUS:
+			r.isometric.Pan(geom.PtF32(-1, 1))
-				r.project.ZoomOut(ctx, r.project.center)
+		case ui.KeyS:
-			case sdl.K_w:
+			r.isometric.Pan(geom.PtF32(1, 1))
-				r.project.Pan(ctx, PtF(-1, -1))
+		case ui.KeyD:
-			case sdl.K_a:
+			r.isometric.Pan(geom.PtF32(1, -1))
-				r.project.Pan(ctx, PtF(-1, 1))
-			case sdl.K_s:
-				r.project.Pan(ctx, PtF(1, 1))
-			case sdl.K_d:
-				r.project.Pan(ctx, PtF(1, -1))
-			}
 		}
 	}
 	return false
 }
 
-func (r *terrainRenderer) Render(ctx *Context) {
+func (r *terrainRenderer) Render(ctx ui.Context) {
+	zoom := r.isometric.Zoom()
 	terrain := r.game.Terrain
-	toTileTexture := func(x, y int32) *Texture {
+	toTileTexture := func(tile geom.Point) ui.Texture {
-		temp := terrain.Temp.Value(x, y)
+		temp := terrain.Temp.Value(tile.X, tile.Y)
 		if temp < .35 {
-			return ctx.Textures.Texture("tile-snow")
+			return ctx.Textures().ScaledByName("tile-snow", zoom)
 		}
 		if temp > .65 {
-			return ctx.Textures.Texture("tile-dirt")
+			return ctx.Textures().ScaledByName("tile-dirt", zoom)
 		}
-		return ctx.Textures.Texture("tile-grass")
+		return ctx.Textures().ScaledByName("tile-grass", zoom)
 	}
 
 	variantToInt := func(variant float64) int {
@@ -144,14 +142,13 @@ func (r *terrainRenderer) Render(ctx *Context) {
 		return -1
 	}
 
-	variantToTexture := func(format string, variant float64) *Texture {
+	variantToTexture := func(format string, variant float64) ui.Texture {
 		textName := fmt.Sprintf(format, variantToInt(variant))
-		return ctx.Textures.Texture(textName)
+		return ctx.Textures().ScaledByName(textName, zoom)
 	}
-
 	stretch := func(x, from, to float64) float64 { return (x - from) * 1 / (to - from) }
 
-	toPropTexture := func(temp, humid, variant float64) *Texture {
+	toPropTexture := func(temp, humid, variant float64) ui.Texture {
 		if temp < .35 {
 			if humid < .2 {
 				return nil
@@ -181,12 +178,12 @@ func (r *terrainRenderer) Render(ctx *Context) {
 		return variantToTexture("bush-large-%d", stretch(variant, .8, 1)*multiplier)
 	}
 
-	toItemTexture := func(x, y int32) *Texture {
+	toItemTexture := func(x, y int) ui.Texture {
 		variant := terrain.Variant.Value(x, y)
-		flower, ok := terrain.Flowers[Pt(x, y)]
+		flower, ok := terrain.Flowers[geom.Pt(x, y)]
 		if ok {
 			desc, _ := r.game.Herbarium.Find(flower.ID)
-			return ctx.Textures.Texture(desc.IconTemplate.Variant(variantToInt(variant)))
+			return ctx.Textures().ScaledByName(desc.IconTemplate.Variant(variantToInt(variant)), zoom)
 		}
 		temp := terrain.Temp.Value(x, y)
 		humid := terrain.Humid.Value(x, y)
@@ -197,24 +194,35 @@ func (r *terrainRenderer) Render(ctx *Context) {
 	// vertical (tile): [96,160) = 64
 	// vertical (total): [0,160) = 160
 
-	r.project.visibleTiles(func(x, y int32, pos Point) {
+	topLeft := geom.PtF32(-64*zoom, -112*zoom)
-		text := toTileTexture(x, y)
+	bottomRight := geom.PtF32(64*zoom, 48*zoom)
-		rect := r.project.screenToTileRect(pos)
+	textureRect := func(center geom.PointF32) geom.RectangleF32 {
-		text.CopyResize(ctx.Renderer, rect)
+		return geom.RectangleF32{Min: center.Add(topLeft), Max: center.Add(bottomRight)}
+	}
+	hoverTexture := ctx.Textures().ScaledByName("tile-hover", zoom)
 
-		if r.hover != nil && x == r.hover.X && y == r.hover.Y {
+	r.isometric.EnumerateInt(func(tile geom.Point, view geom.PointF32) {
-			ctx.Textures.Texture("tile-hover").CopyResize(ctx.Renderer, rect)
+		text := toTileTexture(tile)
+		rect := textureRect(view)
+		ctx.Renderer().DrawTexture(text, rect)
+		// if r.game.Debug {
+		// 	ctx.Renderer().FillRectangle(view.Add2D(-1, -1).RectRel2D(2, 2), color.White)
+		// 	ctx.Fonts().TextAlign("debug", view, color.White, fmt.Sprintf("%d, %d", tile.X, tile.Y), ui.AlignCenter)
+		// }
+		if r.hover != nil && tile.X == r.hover.X && tile.Y == r.hover.Y {
+			ctx.Renderer().DrawTexture(hoverTexture, rect)
 		}
 	})
 
-	r.project.visibleTiles(func(x, y int32, pos Point) {
+	r.isometric.EnumerateInt(func(tile geom.Point, view geom.PointF32) {
-		text := toItemTexture(x, y)
+		text := toItemTexture(tile.X, tile.Y)
 		if text == nil {
 			return
 		}
 
-		placeX, placeY := terrain.PlaceX.Value(x, y), terrain.PlaceY.Value(x, y)
+		placeX, placeY := terrain.PlaceX.Value(tile.X, tile.Y), terrain.PlaceY.Value(tile.X, tile.Y)
-		pos = r.project.mapToScreenF(float32(x)-.2+float32(.9*placeX-.45), float32(y)-.2+float32(.9*placeY-.45))
+		displaced := r.isometric.TileToView(tile.ToF32().Add2D(-.2+.9*float32(placeX)-.45, -.2+.9*float32(placeY)-.45))
-		text.CopyResize(ctx.Renderer, r.project.screenToTileRect(pos))
+		rect := textureRect(displaced)
+		ctx.Renderer().DrawTexture(text, rect)
 	})
 }

textures.go

@@ -1,116 +0,0 @@
-package tins2020
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/veandco/go-sdl2/img"
-	"github.com/veandco/go-sdl2/sdl"
-	"opslag.de/schobers/fs/vfs"
-)
-
-type Texture struct {
-	texture *sdl.Texture
-	size    Point
-}
-
-func NewTextureFromSurface(renderer *sdl.Renderer, surface *sdl.Surface) (*Texture, error) {
-	texture, err := renderer.CreateTextureFromSurface(surface)
-	if err != nil {
-		return nil, err
-	}
-	return &Texture{texture: texture, size: Pt(surface.W, surface.H)}, nil
-}
-
-func (t *Texture) Size() Point { return t.size }
-
-// func (t *Texture) Rect() Rectangle { return t.rect }
-
-// func (t *Texture) SDLRectPtr() *sdl.Rect { return t.rect.SDLPtr() }
-
-func (t *Texture) Copy(renderer *sdl.Renderer, dst Point) {
-	t.CopyResize(renderer, Rect(dst.X, dst.Y, t.size.X, t.size.Y))
-}
-
-func (t *Texture) CopyPart(renderer *sdl.Renderer, src Rectangle, dst Point) {
-	t.CopyPartResize(renderer, src, Rect(dst.X, dst.Y, src.W, src.H))
-}
-
-func (t *Texture) CopyPartResize(renderer *sdl.Renderer, src Rectangle, dst Rectangle) {
-	renderer.Copy(t.texture, src.SDLPtr(), dst.SDLPtr())
-}
-
-func (t *Texture) CopyResize(renderer *sdl.Renderer, dst Rectangle) {
-	t.CopyPartResize(renderer, RectAbs(0, 0, t.size.X, t.size.Y), dst)
-}
-
-func (t *Texture) SetColor(color sdl.Color) {
-	t.texture.SetColorMod(color.R, color.G, color.B)
-}
-
-// func (t *Texture) CopyF(renderer *sdl.Renderer, dst *sdl.FRect) {
-// 	renderer.CopyF(t.texture, t.rect, dst) // Depends on SDL >=2.0.10
-// }
-
-func (t *Texture) Destroy() { t.texture.Destroy() }
-
-type Textures struct {
-	dir      vfs.CopyDir
-	renderer *sdl.Renderer
-	textures map[string]*Texture
-}
-
-func (t *Textures) Init(renderer *sdl.Renderer, dir vfs.CopyDir) {
-	t.dir = dir
-	t.renderer = renderer
-	t.textures = map[string]*Texture{}
-}
-
-func (t *Textures) Load(name, path string, other ...string) error {
-	err := t.load(name, path)
-	if err != nil {
-		return err
-	}
-	if len(other) == 0 {
-		return nil
-	}
-	if len(other)%2 != 0 {
-		return errors.New("expected name/path pairs")
-	}
-	for i := 0; i < len(other); i += 2 {
-		err = t.load(other[i], other[i+1])
-		if err != nil {
-			return fmt.Errorf("error loading '%s'; error: %v", other[i], err)
-		}
-	}
-	return nil
-}
-
-func (t *Textures) load(name, path string) error {
-	texturePath, err := t.dir.Retrieve(path)
-	if err != nil {
-		return err
-	}
-	surface, err := img.Load(texturePath)
-	if err != nil {
-		return err
-	}
-	defer surface.Free()
-	texture, err := NewTextureFromSurface(t.renderer, surface)
-	if err != nil {
-		return err
-	}
-	t.textures[name] = texture
-	return nil
-}
-
-func (t *Textures) Texture(name string) *Texture { return t.textures[name] }
-
-func (t *Textures) Destroy() {
-	if t.textures == nil {
-		return
-	}
-	for _, t := range t.textures {
-		t.Destroy()
-	}
-}

tools.go

@@ -1,8 +1,10 @@
 package tins2020
 
+import "opslag.de/schobers/geom"
+
 type Tool interface {
 	Type() string
-	ClickedTile(*Game, Point)
+	ClickedTile(*Game, geom.Point)
 }
 
 type PlantFlowerTool struct {
@@ -11,7 +13,7 @@ type PlantFlowerTool struct {
 
 func (t *PlantFlowerTool) Type() string { return "plant-flower" }
 
-func (t *PlantFlowerTool) ClickedTile(game *Game, tile Point) {
+func (t *PlantFlowerTool) ClickedTile(game *Game, tile geom.Point) {
 	game.PlantFlower(t.FlowerID, tile)
 }
 
@@ -19,6 +21,6 @@ type ShovelTool struct{}
 
 func (t *ShovelTool) Type() string { return "shovel" }
 
-func (t *ShovelTool) ClickedTile(game *Game, tile Point) {
+func (t *ShovelTool) ClickedTile(game *Game, tile geom.Point) {
 	game.Dig(tile)
 }

tooltip.go

@@ -1,72 +0,0 @@
-package tins2020
-
-import "github.com/veandco/go-sdl2/sdl"
-
-type Tooltip struct {
-	ControlBase
-
-	Text string
-}
-
-const tooltipBorderThickness = 1
-const tooltipHorizontalPadding = 6
-const tooltipVerticalPadding = 2
-const tooltipMouseDistance = 12
-
-func (t *Tooltip) ActualFontName() string {
-	if t.FontName == "" {
-		return "small"
-	}
-	return t.FontName
-}
-
-func (t *Tooltip) Handle(ctx *Context, event sdl.Event) bool {
-	if len(t.Text) == 0 {
-		return false
-	}
-
-	font := ctx.Fonts.Font(t.ActualFontName())
-	if font == nil {
-		font = ctx.Fonts.Font("default")
-	}
-	windowW, windowH, err := ctx.Renderer.GetOutputSize()
-	if err != nil {
-		return false
-	}
-
-	labelW, labelH, err := font.SizeUTF8(t.Text)
-	if err != nil {
-		return false
-	}
-
-	mouse := ctx.MousePosition
-	width := int32(labelW) + 2*tooltipBorderThickness + 2*tooltipHorizontalPadding
-	height := int32(labelH) + 2*tooltipBorderThickness + 2*tooltipVerticalPadding
-
-	left := mouse.X + tooltipMouseDistance
-	top := mouse.Y + tooltipMouseDistance
-	if left+width > windowW {
-		left = mouse.X - tooltipMouseDistance - width
-	}
-	if top+height > windowH {
-		top = mouse.Y - tooltipMouseDistance - height
-	}
-
-	t.Bounds = Rect(left, top, width, height)
-	return false
-}
-
-func (t *Tooltip) Render(ctx *Context) {
-	almostBlack := MustHexColor("#0000007f")
-	SetDrawColor(ctx.Renderer, almostBlack)
-	ctx.Renderer.FillRect(t.Bounds.SDLPtr())
-
-	almostWhite := MustHexColor("ffffff7f")
-	SetDrawColor(ctx.Renderer, almostWhite)
-	ctx.Renderer.DrawRect(t.Bounds.SDLPtr())
-
-	font := ctx.Fonts.Font(t.ActualFontName())
-
-	bottomLeft := Pt(t.Bounds.X+tooltipBorderThickness+tooltipHorizontalPadding, t.Bounds.Y+t.Bounds.H-tooltipBorderThickness-tooltipVerticalPadding)
-	font.RenderCopy(ctx.Renderer, t.Text, bottomLeft, White)
-}