Fixed virtual buttons.

Added missing mouse pointers where applicable.

.gitignore

@@ -1,4 +1,3 @@
 .vscode/launch.json
 
 scripts/build
-cmd/tins2021/rice-box.go

README.md

@@ -2,24 +2,25 @@
 
 ## Content
 
-- [Introduction](##Introduction)
-- [Additional Rules](##Additional-Rules)
-   * [Implementation](###Implementation)
-   * [Definition](###Definition)
-- [Building](##Building)
-- [Sources](##Sources)
-- [Licenses (third party)](##Licenses)
-   * [Go-SDL2](###Go-SDL2)
-   * [SDL 2.0](###SDL-2.0)
-   * [Fira Mono font](###Fira-Mono-font)
-   * [Escher font](###Escher-font)
-   * [Escheresk font](###Escheresk-font)
-   * [fauxgl](###fauxgl)
-   * [draw2d](###draw2d)
-   * [go-colurful](###go-colurful)
-   * [resize](###resize)
-   * [testify](###testify)
-   * [go.rice](###rice)
+- [Introduction](#introduction)
+- [Additional Rules](#additional-rules)
+   * [Implementation](#implementation)
+   * [Definition](#definition)
+- [Building](#building)
+   * [Using Allegro](#using-allegro)
+- [Sources](#sources)
+- [Licenses (third party)](#licenses)
+   * [Go-SDL2](#go-sdl2)
+   * [SDL 2.0](#sdl-2-0)
+   * [Allegro 5](#allegro-5)
+   * [Fira Mono font](#fira-mono-font)
+   * [Escher font](#escher-font)
+   * [Escheresk font](#escheresk-font)
+   * [fauxgl](#fauxgl)
+   * [draw2d](#draw2d)
+   * [go-colurful](#go-colurful)
+   * [resize](#resize)
+   * [testify](#testify)
 
 ## Introduction
 
@@ -114,6 +115,8 @@ Prerequisites:
 - GCC or a compatible compiler.
 - [Git](https://git-scm.com/download).
 
+**Note:** the SDL 2.0 dependency can be replaced with [Allegro 5](#Using-Allegro) as well.
+
 With all prequisites installed you can run:
 ```
 go get -u opslag.de/schobers/tins2021/cmd/tins2021
@@ -125,15 +128,17 @@ go generate opslag.de/schobers/tins2021/cmd/tins2021
 go install -tags static -ldflags "-s -w" opslag.de/schobers/tins2021/cmd/tins2021
 ```
 
+### Using Allegro
+
 If you want to use the Allegro backend you can add the build tag `allegro` to the `go install` command. E.g.:
 ```
 go get -u opslag.de/schobers/allg5
 go install -tags static,allegro -ldflags "-s -w" opslag.de/schobers/tins2021/cmd/tins2021
 ```
-In this case the SDL 2.0 prerequisite is replaced by the Allegro 5.2 (development libraries must be available for your C compiler).
+In this case the SDL 2.0 prerequisite is replaced by Allegro 5.2 (development libraries must be available for your C compiler).
 
 ## Command line interface
-You can extract all resources embedded in the executable by running it from the command line with the `--extract-resources` flag. The resources will be extract in the current working directory. Note that the game will use the resources on disk first if they are available.
+You can extract all resources embedded in the executable by running it from the command line with the `--extract` flag. The resources will be extract in the current working directory. Note that the game will use the resources on disk first if they are available.
 
 ## Sources
 Can be found at https://opslag.de/schobers/tins2021 (Git repository).
@@ -186,6 +191,20 @@ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+### Allegro 5
+
+Copyright © 2008-2010 the Allegro 5 Development Team
+
+This software is provided ‘as-is’, without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
+
+The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+
+Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+
+This notice may not be removed or altered from any source distribution.
+
 ### Fira Mono font
 
 Copyright (c) 2012-2013, The Mozilla Corporation and Telefonica S.A.
@@ -388,28 +407,3 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
-
-### rice
-
-Copyright (c) 2013, Geert-Johan Riemer
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-1. Redistributions of source code must retain the above copyright notice, this
-   list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright notice,
-   this list of conditions and the following disclaimer in the documentation
-   and/or other materials provided with the distribution.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

TODO.md

@@ -0,0 +1,16 @@
+- [X] Increase difficulty.
+- [X] Add music & sounds.
+- [X] Keep score/difficulty level (resume & restart).
+- [X] ~~Explain controls on info page~~ add settings for controls.
+- [X] Fix usage of go/embed (and remove rice again).
+- [X] Add monster animations (~~jumping on tile &~~ towards new tile).
+- [X] ~~Scale icons (heart & star on right side) when playing.~~
+- [ ] Change layout when playing in portrait mode.
+- [X] Fix wobble animation.
+- [ ] Add more unit tests?
+- [X] Fix z-fighting of monsters.
+- [X] Add exploding animation of monsters.
+- [X] Add audio settings (music & sound volume).
+- [X] Hearts must be saved as well for resume.
+- [ ] Add demo mode.
+- [X] Add touch controls

animatedtexture.go

@@ -0,0 +1,54 @@
+package tins2021
+
+import (
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg/ui"
+)
+
+type AnimatedTexture struct {
+	texture   NamedTexture
+	animation ui.Texture
+	frames    []geom.RectangleF32
+}
+
+func newAnimatedTexture(texture NamedTexture, animation ui.Texture, n int) AnimatedTexture {
+	frames := make([]geom.RectangleF32, 0, n)
+	height := float32(animation.Height())
+	width := float32(animation.Width())
+	for i := 0; i < n; i++ {
+		left := width * float32(i) / float32(n)
+		right := width * float32(i+1) / float32(n)
+		frames = append(frames, geom.RectF32(left, 0, right, height))
+	}
+	return AnimatedTexture{texture: texture, animation: animation, frames: frames}
+}
+
+func NewAnimatedTexture(texture NamedTexture, n int) AnimatedTexture {
+	return newAnimatedTexture(texture, texture.Texture(), n)
+}
+
+func FitAnimatedTexture(texture NamedTexture, scale float32, n int) AnimatedTexture {
+	height := float32(texture.Texture().Height())
+	scale = ScaleRound(height, scale)
+	return newAnimatedTexture(texture, texture.Scaled(scale), n)
+}
+
+func (t AnimatedTexture) Draw(renderer ui.Renderer, pos geom.PointF32, frame int) {
+	renderer.DrawTexturePointOptions(t.animation, pos, ui.DrawOptions{Source: &t.frames[frame]})
+}
+
+func (t AnimatedTexture) FrameSize(i int) geom.PointF32 { return t.frames[i].Size() }
+
+func (t AnimatedTexture) Frames() int { return len(t.frames) }
+
+func (t AnimatedTexture) Scale(scale float32) AnimatedTexture {
+	return FitAnimatedTexture(t.texture, scale, t.Frames())
+}
+
+func FindScaleRound(length, desired float32) float32 {
+	return ScaleRound(length, desired/length)
+}
+
+func ScaleRound(length, scale float32) float32 {
+	return geom.Round32(length*scale) / length
+}

animation.go

@@ -5,51 +5,8 @@ import (
 	"time"
 
 	"opslag.de/schobers/geom"
-	"opslag.de/schobers/zntg/ui"
 )
 
-type AnimatedTexture struct {
-	Texture ui.Texture
-	Frames  []geom.RectangleF32
-}
-
-func NewAnimatedTexture(texture ui.Texture, n int) AnimatedTexture {
-	frames := make([]geom.RectangleF32, 0, n)
-	height := float32(texture.Height())
-	width := float32(texture.Width())
-	for i := 0; i < n; i++ {
-		left := width * float32(i) / float32(n)
-		right := width * float32(i+1) / float32(n)
-		frames = append(frames, geom.RectF32(left, 0, right, height))
-	}
-	return AnimatedTexture{Texture: texture, Frames: frames}
-}
-
-func NewSquareAnimatedTexture(texture ui.Texture) AnimatedTexture {
-	var frames []geom.RectangleF32
-	height := float32(texture.Height())
-	width := float32(texture.Width())
-	for left := float32(0); left < width; left += height {
-		frames = append(frames, geom.RectF32(left, 0, left+height, height))
-	}
-	return AnimatedTexture{Texture: texture, Frames: frames}
-}
-
-func (t AnimatedTexture) Scale(scale float32) AnimatedTexture {
-	frames := make([]geom.RectangleF32, 0, len(t.Frames))
-	for _, frame := range t.Frames {
-		frames = append(frames, geom.RectangleF32{Min: frame.Min.Mul(scale), Max: frame.Max.Mul(scale)})
-	}
-	return AnimatedTexture{
-		Texture: t.Texture,
-		Frames:  frames,
-	}
-}
-
-func (t AnimatedTexture) Draw(renderer ui.Renderer, pos geom.PointF32, frame int) {
-	renderer.DrawTexturePointOptions(t.Texture, pos, ui.DrawOptions{Source: &t.Frames[frame]})
-}
-
 type Animation struct {
 	LastUpdate time.Time
 	Frame      int

cmd/tins2021/app.go

@@ -1,6 +1,9 @@
 package main
 
 import (
+	"log"
+
+	"opslag.de/schobers/geom"
 	"opslag.de/schobers/tins2021"
 	"opslag.de/schobers/zntg/play"
 	"opslag.de/schobers/zntg/ui"
@@ -10,6 +13,7 @@ type app struct {
 	ui.Proxy
 
 	settings *tins2021.Settings
+	score    *tins2021.ScoreState
 
 	context *appContext
 }
@@ -35,18 +39,18 @@ const fpsOverlayName = `fps`
 
 func (a *app) Init(ctx ui.Context) error {
 	if err := a.loadFonts(ctx,
-		fontDescriptor{"debug", "fonts/FiraMono-Regular.ttf", 12},
-		fontDescriptor{"default", "fonts/escheresk.ttf", 48},
-		fontDescriptor{"small", "fonts/escheresk.ttf", 16},
-		fontDescriptor{"score", "fonts/FiraMono-Regular.ttf", 24},
-		fontDescriptor{"title", "fonts/escher.ttf", 80},
+		fontDescriptor{"debug", "resources/fonts/FiraMono-Regular.ttf", 12},
+		fontDescriptor{"default", "resources/fonts/escheresk.ttf", 48},
+		fontDescriptor{"small", "resources/fonts/escheresk.ttf", 16},
+		fontDescriptor{"score", "resources/fonts/FiraMono-Regular.ttf", 24},
+		fontDescriptor{"title", "resources/fonts/escher.ttf", 80},
 	); err != nil {
 		return err
 	}
 
 	textureLoader := tins2021.NewResourceLoader()
 	textures := ctx.Textures()
-	if err := textureLoader.LoadFromFile(ctx.Resources(), "textures.txt", func(name, content string) error {
+	if err := textureLoader.LoadFromFile(ctx.Resources(), "resources/textures.txt", func(name, content string) error {
 		_, err := textures.CreateTexturePath(name, content, true)
 		return err
 	}); err != nil {
@@ -55,11 +59,42 @@ func (a *app) Init(ctx ui.Context) error {
 
 	ctx.Overlays().AddOnTop(fpsOverlayName, &play.FPS{Align: ui.AlignRight}, false)
 
-	a.context = newAppContext(ctx, func(control ui.Control) {
-		a.Content = control
+	virtual := NewVirtualControls(nil)
+	virtual.RegisterKey("confirm", ui.KeyEnter, tins2021.MustCreateNamedTextureImage(textures, "return-key", drawReturnKey()))
+	virtual.RegisterKey("arrow-top-left", ui.KeyUp, tins2021.MustCreateNamedTextureImage(textures, "arrow-top-left-key", drawArrowKey(.75*geom.Pi)))
+	virtual.RegisterKey("arrow-top-right", ui.KeyRight, tins2021.MustCreateNamedTextureImage(textures, "arrow-top-right-key", drawArrowKey(.25*geom.Pi)))
+	virtual.RegisterKey("arrow-bottom-left", ui.KeyLeft, tins2021.MustCreateNamedTextureImage(textures, "arrow-bottom-left-key", drawArrowKey(1.25*geom.Pi)))
+	virtual.RegisterKey("arrow-bottom-right", ui.KeyDown, tins2021.MustCreateNamedTextureImage(textures, "arrow-bottom-right-key", drawArrowKey(1.75*geom.Pi)))
+	virtual.RegisterKey("cancel", ui.KeyEscape, tins2021.MustCreateNamedTextureImage(textures, "arrow-left-key", drawArrowKey(geom.Pi)))
+
+	virtual.Enabled = a.settings.Controls.Virtual
+	a.Content = virtual
+	a.context = newAppContext(ctx, a.settings, a.score, func(view ui.Control) {
+		virtual.Content = view
 	})
+	a.context.Virtual = virtual
 	a.context.ShowMainMenu(ctx)
 
+	if err := a.context.Audio.LoadSample(
+		"level_completed.mp3",
+		"level_game_over.mp3",
+		"level_new_high_score.mp3",
+		"player_collect_heart.mp3",
+		"player_collect_star.mp3",
+		"player_hurt.mp3",
+	); err != nil {
+		log.Printf("failed to load samples; %v\n", err)
+	}
+	if err := a.context.Audio.LoadSampleVolume(-.5, "menu_interaction.mp3"); err != nil {
+		log.Printf("failed to load samples; %v\n", err)
+	}
+	if err := a.context.Audio.LoadSampleVolume(-1,
+		"monster_jump.mp3",
+		"player_move.mp3",
+	); err != nil {
+		log.Printf("failed to load samples; %v\n", err)
+	}
+
 	return nil
 }
 

cmd/tins2021/appcontext.go

@@ -1,7 +1,8 @@
 package main
 
 import (
-	"image"
+	"fmt"
+	"math/rand"
 
 	"opslag.de/schobers/tins2021"
 	"opslag.de/schobers/zntg/ui"
@@ -10,46 +11,68 @@ import (
 type appContext struct {
 	setView func(ui.Control)
 
-	Debug bool
+	Settings *tins2021.Settings
+	Score    *tins2021.ScoreState
+	Virtual  *VirtualControls
+	Debug    bool
 
-	MonsterTextureNames map[tins2021.MonsterType]string
+	StarTexture          tins2021.AnimatedTexture
+	HeartTexture         tins2021.AnimatedTexture
+	MonsterTextureNames  map[tins2021.MonsterType]string
+	MonsterTextures      map[tins2021.MonsterType]tins2021.AnimatedTexture
+	DyingMonsterTextures map[tins2021.MonsterType]tins2021.AnimatedTexture
+
+	Audio         *AudioPlayer
+	MenuMusic     *Music
+	GameMusic     *Music
+	GameMusicSong int
 }
 
-func newAppContext(ctx ui.Context, setView func(ui.Control)) *appContext {
-	newAnimatedTexture(ctx, "star", "images/star.png", func() image.Image {
-		return tins2021.AnimatePolygon(tins2021.CreateStar(5), tins2021.Yellow, tins2021.NewRotateAnimation(defaultAnimationFrames))
-	})
-	newAnimatedTexture(ctx, "heart", "images/heart.png", func() image.Image {
-		return tins2021.AnimatePolygon(tins2021.CreateHeart(), tins2021.Red, tins2021.NewRotateAnimation(defaultAnimationFrames))
-	})
-
+func newAppContext(ctx ui.Context, settings *tins2021.Settings, score *tins2021.ScoreState, setView func(ui.Control)) *appContext {
+	textures := textureGenerator{}
 	app := &appContext{
-		setView: setView,
-		MonsterTextureNames: map[tins2021.MonsterType]string{
-			tins2021.MonsterTypeStraight: "straight-walking-monster",
-			tins2021.MonsterTypeRandom:   "random-walking-monster",
-			tins2021.MonsterTypeChaser:   "chasing-monster",
-		},
+		setView:              setView,
+		Settings:             settings,
+		Audio:                NewAudioPlayer(ctx.Resources(), "resources/sounds/"),
+		Score:                score,
+		StarTexture:          newAnimatedTexture(ctx, "star", defaultAnimationFrames, textures.Star),
+		HeartTexture:         newAnimatedTexture(ctx, "heart", defaultAnimationFrames, textures.Heart),
+		MonsterTextureNames:  map[tins2021.MonsterType]string{},
+		MonsterTextures:      map[tins2021.MonsterType]tins2021.AnimatedTexture{},
+		DyingMonsterTextures: map[tins2021.MonsterType]tins2021.AnimatedTexture{},
 	}
-	newAnimatedTexture(ctx, app.MonsterTextureNames[tins2021.MonsterTypeStraight], "images/monster-straight.png", func() image.Image {
-		return tins2021.AnimatePolygon(tins2021.CreateHexagon(), tins2021.Green, tins2021.NewWobbleAnimation(defaultAnimationFrames, 30))
-	})
-	newAnimatedTexture(ctx, app.MonsterTextureNames[tins2021.MonsterTypeRandom], "images/monster-random.png", func() image.Image {
-		return tins2021.AnimatePolygon(tins2021.CreateHexagon(), tins2021.Blue, tins2021.NewWobbleAnimation(defaultAnimationFrames, 30))
-	})
-	newAnimatedTexture(ctx, app.MonsterTextureNames[tins2021.MonsterTypeChaser], "images/monster-chaser.png", func() image.Image {
-		return tins2021.AnimatePolygon(tins2021.CreateHexagon(), tins2021.Purple, tins2021.NewWobbleAnimation(defaultAnimationFrames, 30))
-	})
+
+	app.Audio.SampleVolume = settings.Audio.SoundVolume
+	app.Audio.MusicVolume = settings.Audio.MusicVolume
+
+	monsterNames := map[tins2021.MonsterType]string{
+		tins2021.MonsterTypeStraight: "straight-walking",
+		tins2021.MonsterTypeRandom:   "random-walking",
+		tins2021.MonsterTypeChaser:   "chasing",
+	}
+	for typ, name := range monsterNames {
+		textureName := fmt.Sprintf("%s-monster", name)
+		app.MonsterTextureNames[typ] = textureName
+		app.MonsterTextures[typ] = newAnimatedTexture(ctx, textureName, defaultAnimationFrames, textures.Monster(typ))
+		app.DyingMonsterTextures[typ] = newAnimatedTexture(ctx, fmt.Sprintf("%s-dying-monster", name), defaultAnimationFrames, textures.DyingMonster(typ))
+	}
+
 	return app
 }
 
 const numberOfStars = 5
 
+func (app *appContext) MenuInteraction() {
+	app.Audio.PlaySample("menu_interaction.mp3")
+}
+
 func (app *appContext) Play(ctx ui.Context) {
 	level := tins2021.NewLevel()
 	level.Randomize(0, numberOfStars)
 
-	app.show(newLevelControl(app, ctx, level))
+	app.ResetCurrentScore()
+	app.show(ctx, newLevelControl(app, ctx, level))
+	app.SetVirtualKeys(true, true, true)
 }
 
 func (app *appContext) PlayNext(ctx ui.Context, controller *levelController) {
@@ -62,21 +85,141 @@ func (app *appContext) PlayNext(ctx ui.Context, controller *levelController) {
 	level.Score = score
 	level.Lives = lives
 
+	app.SetVirtualKeys(true, true, true)
 	controller.Play(level)
 }
 
-func (app *appContext) show(control ui.Control) {
+func (app *appContext) playNextGameMusic(ctx ui.Context) {
+	if app.GameMusic != nil {
+		return
+	}
+	const songs = 4
+	pick := func() int {
+		for {
+			s := rand.Intn(songs) + 1
+			if s == app.GameMusicSong {
+				continue
+			}
+			app.GameMusicSong = s
+			return s
+		}
+	}
+	song := fmt.Sprintf("song_game_%d.mp3", pick())
+	app.GameMusic, _ = app.Audio.PlayMusic(song, func(m *Music) {
+		m.OnFinished = func() {
+			if app.GameMusic == nil {
+				return
+			}
+			app.GameMusic = nil
+			app.playNextGameMusic(ctx)
+		}
+	})
+}
+
+func (app *appContext) PlayResume(ctx ui.Context) {
+	level := tins2021.NewLevel()
+	level.Score = app.Score.Current.Score
+	level.Lives = app.Score.CurrentLives
+	level.Randomize(app.Score.Current.Difficulty, numberOfStars)
+
+	app.show(ctx, newLevelControl(app, ctx, level))
+	app.SetVirtualKeys(true, true, true)
+}
+
+func (app *appContext) ResetCurrentScore() {
+	app.Score.Current = tins2021.Score{}
+	app.Score.CurrentLives = 0
+}
+
+func (app *appContext) SetCurrentScore(level *tins2021.Level) {
+	app.Score.Current = tins2021.NewScore(level.Score, level.Difficulty+1)
+	app.Score.CurrentLives = level.Lives
+}
+
+func (app *appContext) show(ctx ui.Context, control ui.Control) {
 	app.setView(control)
+	if _, ok := control.(*levelController); ok {
+		app.switchToPlayMusic(ctx)
+	} else {
+		app.switchToMenuMusic(ctx)
+	}
 }
 
 func (app *appContext) ShowCredits(ctx ui.Context) {
-	app.setView(newCredits(app, ctx))
+	app.show(ctx, newCredits(app, ctx))
+	app.SetVirtualKeys(true, true, false)
+}
+
+func (app *appContext) ShowSettings(ctx ui.Context) {
+	app.show(ctx, newSettings(app, ctx))
+	app.SetVirtualKeys(true, true, false)
+}
+
+func (app *appContext) ShowHighscores(ctx ui.Context) {
+	app.show(ctx, newHighscores(app, ctx))
+	app.SetVirtualKeys(true, true, false)
 }
 
 func (app *appContext) ShowInfo(ctx ui.Context) {
-	app.setView(newInfo(app, ctx))
+	app.show(ctx, newInfo(app, ctx))
+	app.SetVirtualKeys(true, true, false)
 }
 
 func (app *appContext) ShowMainMenu(ctx ui.Context) {
-	app.show(newMainMenu(app, ctx))
+	app.show(ctx, newMainMenu(app, ctx))
+	app.SetVirtualKeys(false, false, false)
+}
+
+func (app *appContext) setMusicVolume(volume float64) {
+	app.Settings.Audio.MusicVolume = volume
+	app.Audio.MusicVolume = volume
+	menu := app.MenuMusic
+	if menu != nil {
+		menu.Volume.Volume = volume
+	}
+	game := app.GameMusic
+	if game != nil {
+		game.Volume.Volume = volume
+	}
+}
+
+func (app *appContext) setSoundVolume(volume float64) {
+	app.Settings.Audio.SoundVolume = volume
+	app.Audio.SampleVolume = volume
+}
+
+func (app *appContext) SetVirtualKeys(cancel, confirm, controls bool) {
+	var topLeft, topRight, bottomRight, bottomLeft []string
+	if cancel {
+		topLeft = append(topLeft, "cancel")
+	}
+	if confirm {
+		topRight = append(topRight, "confirm")
+	}
+	if controls {
+		bottomRight = append(bottomRight, "arrow-bottom-right", "arrow-top-right")
+		bottomLeft = append(bottomLeft, "arrow-bottom-left", "arrow-top-left")
+	}
+	app.Virtual.SetControls(topLeft, topRight, bottomRight, bottomLeft)
+}
+
+func (app *appContext) switchToPlayMusic(ctx ui.Context) {
+	app.playNextGameMusic(ctx)
+	menuMusic := app.MenuMusic
+	app.MenuMusic = nil
+	if menuMusic != nil {
+		menuMusic.Stop()
+	}
+}
+
+func (app *appContext) switchToMenuMusic(ctx ui.Context) {
+	if app.MenuMusic != nil {
+		return
+	}
+	app.MenuMusic, _ = app.Audio.PlayMusic("song_menu.mp3", func(m *Music) { m.AutoRepeat = true })
+	gameMusic := app.GameMusic
+	app.GameMusic = nil
+	if gameMusic != nil {
+		gameMusic.Stop()
+	}
 }

cmd/tins2021/audio.go

@@ -0,0 +1,198 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"time"
+
+	"github.com/faiface/beep"
+	"github.com/faiface/beep/effects"
+	"github.com/faiface/beep/mp3"
+	"github.com/faiface/beep/speaker"
+	"github.com/pkg/errors"
+	"opslag.de/schobers/ut"
+	"opslag.de/schobers/zntg/ui"
+)
+
+type AudioPlayer struct {
+	resources ui.Resources
+	prefix    string
+
+	SampleRate beep.SampleRate
+
+	Samples map[string]Sample
+
+	SampleVolume float64
+	MusicVolume  float64
+}
+
+func NewAudioPlayer(resources ui.Resources, prefix string) *AudioPlayer {
+	var rate = beep.SampleRate(48000)
+	speaker.Init(rate, rate.N(time.Second/20))
+
+	return &AudioPlayer{
+		resources:    resources,
+		prefix:       prefix,
+		SampleRate:   rate,
+		Samples:      map[string]Sample{},
+		SampleVolume: 0,
+		MusicVolume:  0,
+	}
+}
+
+func (p *AudioPlayer) LoadSample(name ...string) error {
+	return p.LoadSampleVolume(0, name...)
+}
+
+func (p *AudioPlayer) LoadSampleVolume(volume float64, name ...string) error {
+	var all error
+	for _, name := range name {
+		if _, err := p.openSample(name, volume); err != nil {
+			all = ut.ErrCombine(all, errors.Wrap(err, "failed to open sample"))
+		}
+	}
+	if all == nil {
+		return nil
+	}
+	return errors.WithMessage(all, "failed to open one or more samples")
+}
+
+func (p *AudioPlayer) openSample(name string, volume float64) (Sample, error) {
+	sample, ok := p.Samples[name]
+	if ok {
+		return sample, nil
+	}
+	stream, format, err := p.openResource(name)
+	if err != nil {
+		return Sample{}, err
+	}
+	defer stream.Close()
+
+	buffer := beep.NewBuffer(format)
+	buffer.Append(stream)
+	sample = Sample{Buffer: buffer, Volume: volume, SampleRate: format.SampleRate}
+	p.Samples[name] = sample
+	return sample, nil
+}
+
+func (p *AudioPlayer) PlaySample(name string) error {
+	sample, err := p.openSample(name, 0)
+	if err != nil {
+		return err
+	}
+	volume := p.SampleVolume + sample.Volume
+	speaker.Play(&effects.Volume{
+		Streamer: p.resample(sample.Stream(), sample.SampleRate),
+		Base:     2,
+		Volume:   volume,
+		Silent:   volume <= minVolume,
+	})
+	return nil
+}
+
+func (p *AudioPlayer) resample(stream beep.Streamer, sampleRate beep.SampleRate) beep.Streamer {
+	return Resample(stream, p.SampleRate, sampleRate)
+}
+
+func (p *AudioPlayer) PlayMusic(name string, init func(*Music)) (*Music, error) {
+	stream, format, err := p.openResource(name)
+	if err != nil {
+		return nil, err
+	}
+	closer := &streamCloser{stream}
+	music := &Music{
+		Name:       name,
+		AutoRepeat: false,
+		Stream:     closer,
+		Volume: &effects.Volume{
+			Streamer: p.resample(closer, format.SampleRate),
+			Base:     2,
+			Volume:   p.MusicVolume,
+			Silent:   p.MusicVolume <= minVolume,
+		},
+	}
+	if init != nil {
+		init(music)
+	}
+	speaker.Play(beep.Seq(music.Volume, beep.Callback(func() { go music.Finished(p) })))
+	return music, nil
+}
+
+func (p *AudioPlayer) openResource(name string) (beep.StreamSeekCloser, beep.Format, error) {
+	path := fmt.Sprintf("%s%s", p.prefix, name)
+	audio, err := p.resources.OpenResource(path)
+	if err != nil {
+		return nil, beep.Format{}, err
+	}
+
+	stream, format, err := mp3.Decode(audio)
+	if err != nil {
+		return nil, beep.Format{}, err
+	}
+	return stream, format, nil
+}
+
+type Music struct {
+	Name       string
+	AutoRepeat bool
+	Stream     beep.StreamCloser
+	Volume     *effects.Volume
+	OnFinished func()
+}
+
+func (m *Music) Stop() {
+	m.AutoRepeat = false
+	m.Stream.Close()
+}
+
+func (m Music) Finished(player *AudioPlayer) {
+	m.Stream.Close()
+	if m.AutoRepeat {
+		player.PlayMusic(m.Name, func(m *Music) { m.AutoRepeat = true })
+	}
+	onFinished := m.OnFinished
+	if onFinished != nil {
+		onFinished()
+	}
+}
+
+type Sample struct {
+	*beep.Buffer
+
+	Volume     float64
+	SampleRate beep.SampleRate
+}
+
+func (s Sample) Stream() beep.Streamer {
+	return s.Buffer.Streamer(0, s.Buffer.Len())
+}
+
+type streamCloser struct {
+	beep.StreamCloser
+}
+
+func (c *streamCloser) Err() error {
+	if c.StreamCloser == nil {
+		return io.EOF
+	}
+	return c.StreamCloser.Err()
+}
+
+func (c *streamCloser) Stream(samples [][2]float64) (n int, ok bool) {
+	if c.StreamCloser == nil {
+		return 0, false
+	}
+	return c.StreamCloser.Stream(samples)
+}
+
+func (c *streamCloser) Close() error {
+	c.StreamCloser = nil
+	return nil
+}
+
+func Resample(stream beep.Streamer, expected, actual beep.SampleRate) beep.Streamer {
+	if expected == actual {
+		return stream
+	}
+	return beep.Resample(3, actual, expected, stream)
+}

cmd/tins2021/background.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"image"
+	"image/color"
+	"image/png"
+	"math/rand"
+	"os"
+
+	"github.com/llgcode/draw2d/draw2dimg"
+	"github.com/nfnt/resize"
+	"golang.org/x/image/draw"
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/tins2021"
+	"opslag.de/schobers/zntg/ui"
+)
+
+func GenerateBackground(resources ui.Resources, path string) error {
+	const cubeTextureWidth = 100
+	cube := resize.Resize(cubeTextureWidth, 0, tins2021.GenerateCube(tins2021.Blue), resize.Bilinear)
+	inverted := resize.Resize(cubeTextureWidth, 0, tins2021.GenerateHole(tins2021.Blue), resize.Bilinear)
+
+	const twelfth = (1. / 6) * geom.Pi
+	centerTopSquare := geom.PtF(.5, .5*geom.Sin(twelfth))
+	delta := geom.PtF(geom.Cos(twelfth), .5+centerTopSquare.Y).Mul(cubeTextureWidth).Mul(.5).ToInt().Mul(2)
+
+	bounds := image.Rect(2560, 1440, 0, 0)
+	im := image.NewRGBA(bounds)
+	var odd bool
+	for y := -cubeTextureWidth; y < bounds.Max.Y; y += delta.Y {
+		left := -cubeTextureWidth
+		if odd {
+			left += delta.X / 2
+		}
+		for x := left; x < bounds.Max.X; x += delta.X {
+			currentCube := cube
+			n := rand.Intn(2)
+			if n == 0 {
+				currentCube = inverted
+			}
+			draw.Copy(im, image.Pt(x, y), currentCube, image.Rect(0, 0, cubeTextureWidth, cubeTextureWidth), draw.Over, nil)
+		}
+		odd = !odd
+	}
+
+	ctx := draw2dimg.NewGraphicContext(im)
+	font, err := parseTitleFont(resources)
+	if err != nil {
+		return err
+	}
+
+	setDraw2DFont(ctx, font)
+	ctx.SetFontSize(224)
+	const text = "QBITTER"
+	center := draw2DCenterString(ctx, text)
+	ctx.SetFillColor(color.White)
+	ctx.FillStringAt(text, .5*float64(bounds.Dx())+center.X, .5*float64(bounds.Dy())+center.Y)
+
+	out, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	return png.Encode(out, im)
+}

cmd/tins2021/credits.go

@@ -36,14 +36,16 @@ func newCredits(app *appContext, ctx ui.Context) *credits {
 		"zntg: an abstraction for rendering (UIs)",
 		" - https://opslag.de/schobers/zntg", "",
 		"allg5: an Allegro abstraction for Go",
-		" - https://opslag.de/schobers/allg5",
+		" - https://opslag.de/schobers/allg5", "",
+		"ut: a utility library",
+		" - https://opslag.de/schobers/ut", "",
 		"",
 		"**... and also using**",
 		"Allegro: cross-platform development library",
 		" - https://liballeg.org", "",
 		"SDL: another cross-platform development library",
 		" - https://libsdl.org", "",
-		"go-sdl2: an SDL abstraction for Go",
+		"go-sdl2: a SDL abstraction for Go",
 		" - https://github.com/veandco/go-sdl2", "",
 		"Fira Mono: monotype font",
 		"Escheresk: M.C. Escher themed font",
@@ -58,8 +60,10 @@ func newCredits(app *appContext, ctx ui.Context) *credits {
 		" - https://github.com/nfnt/resize", "",
 		"testify: a testing library for Go",
 		" - https://github.com/stretchr/testify", "",
-		"rice: a library for embedding files in Go",
-		" - https://github.com/GeertJohan/go.rice", "",
+		"beep: a sound library",
+		" - https://github.com/faiface/beep", "",
+		"oto: a low level sound library",
+		" - https://https://github.com/hajimehoshi/oto", "",
 		"",
 		"# THANKS",
 		"",
@@ -81,7 +85,9 @@ func (c *credits) Handle(ctx ui.Context, e ui.Event) bool {
 			s := c.content[c.hovering]
 			if strings.HasPrefix(s, " - https://") {
 				url := s[3:]
-				c.openBrowser(url)
+				if err := c.openBrowser(url); err != nil {
+					log.Println(err)
+				}
 			}
 		}
 	case *ui.KeyDownEvent:
@@ -148,26 +154,23 @@ func (c *credits) fonts(ctx ui.Context) []ui.Font {
 	return fonts
 }
 
-func (c *credits) openBrowser(url string) {
-	var err error
+func (c *credits) openBrowser(url string) error {
 	switch runtime.GOOS {
 	case "linux":
-		err = exec.Command("xdg-open", url).Start()
+		return exec.Command("xdg-open", url).Start()
 	case "windows":
-		err = exec.Command("rundll32", "url.dll,FileProtocolHandler", url).Start()
+		return exec.Command("rundll32", "url.dll,FileProtocolHandler", url).Start()
 	case "darwin":
-		err = exec.Command("open", url).Start()
+		return exec.Command("open", url).Start()
 	default:
-		err = fmt.Errorf("unsupported platform")
-	}
-	if err != nil {
-		log.Println(err)
+		return fmt.Errorf("unsupported platform")
 	}
 }
 
 func (c *credits) Render(ctx ui.Context) {
 	renderer := ctx.Renderer()
-	width := c.Bounds().Dx()
+	bounds := c.Bounds()
+	width := bounds.Dx()
 	defaultColor := ctx.Style().Palette.Text
 	c.enumerateContent(ctx, func(s string, i int, top, height float32, font ui.Font) {
 		color := defaultColor
@@ -184,6 +187,6 @@ func (c *credits) Render(ctx ui.Context) {
 		}
 
 		textWidth := font.WidthOf(s)
-		renderer.Text(font, geom.PtF32(.5*(width-textWidth), top), color, s)
+		renderer.Text(font, geom.PtF32(bounds.Min.X+.5*(width-textWidth), top), color, s)
 	})
 }

cmd/tins2021/draw2dfont.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"io/ioutil"
+
+	"github.com/golang/freetype/truetype"
+	"github.com/llgcode/draw2d"
+	"github.com/llgcode/draw2d/draw2dimg"
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/zntg/ui"
+)
+
+func draw2DCenterString(ctx *draw2dimg.GraphicContext, s string) geom.PointF {
+	left, top, right, bottom := ctx.GetStringBounds(s)
+	return geom.PtF(-.5*(right-left), .5*(bottom-top))
+}
+
+type draw2DFontCache struct{ *truetype.Font }
+
+func (f draw2DFontCache) Load(draw2d.FontData) (*truetype.Font, error) { return f.Font, nil }
+func (draw2DFontCache) Store(draw2d.FontData, *truetype.Font)          {}
+
+func parseTrueTypeFont(resources ui.Resources, name string) (*truetype.Font, error) {
+	ttf, err := resources.OpenResource(name)
+	if err != nil {
+		return nil, err
+	}
+	defer ttf.Close()
+	data, err := ioutil.ReadAll(ttf)
+	if err != nil {
+		return nil, err
+	}
+	return truetype.Parse(data)
+}
+
+func parseScoreFont(resources ui.Resources) (*truetype.Font, error) {
+	return parseTrueTypeFont(resources, "resources/fonts/FiraMono-Regular.ttf")
+}
+
+func parseTitleFont(resources ui.Resources) (*truetype.Font, error) {
+	return parseTrueTypeFont(resources, "resources/fonts/escher.ttf")
+}
+
+func setDraw2DFont(ctx *draw2dimg.GraphicContext, font *truetype.Font) {
+	ctx.FontCache = draw2DFontCache{font}
+	// ctx.SetFont(font) // is ignored anyway
+}

cmd/tins2021/extract.go

@@ -1,12 +1,11 @@
 package main
 
 import (
+	"embed"
 	"io"
 	"io/fs"
 	"os"
 	"path/filepath"
-
-	rice "github.com/GeertJohan/go.rice"
 )
 
 func copyFile(path string, file fs.File) error {
@@ -21,19 +20,19 @@ func copyFile(path string, file fs.File) error {
 	return err
 }
 
-func copyBoxToDisk() error {
-	box := rice.MustFindBox(`resources`)
-	return box.Walk("", func(path string, info os.FileInfo, err error) error {
+func copyBoxToDisk(resources embed.FS) error {
+	return fs.WalkDir(resources, ".", func(path string, entry fs.DirEntry, err error) error {
 		if err != nil {
 			return err
 		}
-		if info.IsDir() {
+		if entry.IsDir() {
 			return nil
 		}
-		src, err := box.Open(path)
+		src, err := resources.Open(path)
 		if err != nil {
 			return err
 		}
-		return copyFile(filepath.Join(box.Name(), path), src)
+		defer src.Close()
+		return copyFile(path, src)
 	})
 }

cmd/tins2021/highscores.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"fmt"
+
+	"opslag.de/schobers/zntg/ui"
+)
+
+type highscores struct {
+	ui.StackPanel
+
+	app *appContext
+}
+
+func newHighscores(app *appContext, ctx ui.Context) ui.Control {
+	scores := ui.BuildStackPanel(ui.OrientationVertical, func(p *ui.StackPanel) {
+		p.AddChild(label("RANK", "default"))
+		for i, score := range app.Score.Highscores {
+			p.AddChild(label(fmt.Sprintf("%d. %d", i+1, score.Score), "score"))
+		}
+	})
+	difficulties := ui.BuildStackPanel(ui.OrientationVertical, func(p *ui.StackPanel) {
+		p.AddChild(label("  DIFFICULTY", "default"))
+		for _, score := range app.Score.Highscores {
+			p.AddChild(labelOpts(fmt.Sprintf("%d", score.Difficulty), "score", labelOptions{TextAlignment: ui.AlignRight}))
+		}
+	})
+	content := []ui.Control{
+		labelOpts("HIGHSCORES", "title", labelOptions{TextAlignment: ui.AlignCenter}),
+		label("", "score"),
+		Center(ui.BuildStackPanel(ui.OrientationHorizontal, func(p *ui.StackPanel) {
+			p.AddChild(scores, difficulties)
+		})),
+	}
+
+	return Center(&highscores{StackPanel: ui.StackPanel{
+		ContainerBase: ui.ContainerBase{
+			Children: content,
+		},
+		Orientation: ui.OrientationVertical,
+	}, app: app})
+}
+
+func (i *highscores) Handle(ctx ui.Context, e ui.Event) bool {
+	switch e := e.(type) {
+	case *ui.KeyDownEvent:
+		if e.Key == ui.KeyEscape || e.Key == ui.KeyEnter {
+			i.app.ShowMainMenu(ctx)
+		}
+	}
+	return i.ControlBase.Handle(ctx, e)
+}

cmd/tins2021/info.go

@@ -6,15 +6,19 @@ import (
 	"opslag.de/schobers/zntg/ui"
 )
 
+const infoLegendIconSize = .36
+const infoLegendIconMargin = 4.
+const infoLegendSeparatorMargin = 24
+const infoText = "Qbitter is a game loosly based on the work \"LW305 Kringloop\" of M.C. Escher where a gnome runs down a stairs and morphs into its 2D abstract shape. The game also lends ideas from Q*Bert, a game from the eighties that is based on the works of M.C. Escher. \n\nIn the game you (represented as a gnome) have to collect stars while trying to avoid enemies (hexagons). Every level has increasing difficulty."
+
+var infoLegendIconRectangle = geom.RectRelF32(0, 0, infoLegendIconSize*tins2021.TextureSize, infoLegendIconSize*tins2021.TextureSize)
+
 type info struct {
 	ui.StackPanel
 
-	app    *appContext
-	legend *ui.StackPanel
+	app *appContext
 }
 
-const infoText = "Qbitter is a game loosly based on a work \"LW305 Kringloop\" of M.C. Escher where a gnome runs down a stairs and morphs into its 2D abstract shape. The game also lends ideas from Q*Bert, a game from the eighties that was itself based on the works of M.C. Escher. In the game you (represented as a gnome) have to collect stars while trying to avoid enemies (hexagons). Every level has increasing difficulty."
-
 type infoLegend struct {
 	ui.ControlBase
 
@@ -23,44 +27,43 @@ type infoLegend struct {
 }
 
 func (l *infoLegend) DesiredSize(ctx ui.Context, size geom.PointF32) geom.PointF32 {
-	return geom.PtF32(geom.NaN32(), .4*tins2021.TextureSize)
+	textureHeight := float32(l.Icon.Height())
+	font := ctx.Fonts().Font("score")
+	fontHeight := float32(font.Height())
+	return geom.PtF32(textureHeight+infoLegendSeparatorMargin+font.WidthOf(l.Description), geom.Max32(textureHeight+2*infoLegendIconMargin, fontHeight))
 }
 
-const infoLegenIconSize = .36
-
-var infoLegendIconRectangle = geom.RectRelF32(0, 0, infoLegenIconSize*tins2021.TextureSize, infoLegenIconSize*tins2021.TextureSize)
-
 func (l *infoLegend) Render(ctx ui.Context) {
 	bounds := l.Bounds()
-	separator := .3 * bounds.Dx()
 	textureHeight := float32(l.Icon.Height())
 	renderer := ctx.Renderer()
-	renderer.DrawTexturePointOptions(l.Icon, bounds.Min.Add2D(separator-textureHeight, 0), ui.DrawOptions{Source: &infoLegendIconRectangle})
+	renderer.DrawTexturePointOptions(l.Icon, bounds.Min, ui.DrawOptions{Source: &infoLegendIconRectangle})
 	font := ctx.Fonts().Font("score")
 	fontHeight := float32(font.Height())
-	renderer.Text(font, bounds.Min.Add2D(separator+12, .5*(textureHeight-fontHeight)), ctx.Style().Palette.Text, l.Description)
+	renderer.Text(font, bounds.Min.Add2D(textureHeight+infoLegendSeparatorMargin, .5*(textureHeight-fontHeight)+infoLegendIconMargin), ctx.Style().Palette.Text, l.Description)
 }
 
 func newInfo(app *appContext, ctx ui.Context) ui.Control {
+	monsterName := func(typ tins2021.MonsterType) string { return app.MonsterTextureNames[typ] }
 	legend := ui.BuildStackPanel(ui.OrientationVertical, func(p *ui.StackPanel) {
 		p.AddChild(&infoLegend{
-			Icon:        ctx.Textures().ScaledByName("star", infoLegenIconSize),
+			Icon:        ctx.Textures().ScaledByName("star", infoLegendIconSize),
 			Description: "Collect them to complete the level.",
 		})
 		p.AddChild(&infoLegend{
-			Icon:        ctx.Textures().ScaledByName("heart", infoLegenIconSize),
+			Icon:        ctx.Textures().ScaledByName("heart", infoLegendIconSize),
 			Description: "Gives (back) a life.",
 		})
 		p.AddChild(&infoLegend{
-			Icon:        ctx.Textures().ScaledByName("straight-walking-monster", infoLegenIconSize),
+			Icon:        ctx.Textures().ScaledByName(monsterName(tins2021.MonsterTypeStraight), infoLegendIconSize),
 			Description: "Monster that walks over a fixed diagonal.",
 		})
 		p.AddChild(&infoLegend{
-			Icon:        ctx.Textures().ScaledByName("random-walking-monster", infoLegenIconSize),
+			Icon:        ctx.Textures().ScaledByName(monsterName(tins2021.MonsterTypeRandom), infoLegendIconSize),
 			Description: "Monster that walks randomly.",
 		})
 		p.AddChild(&infoLegend{
-			Icon:        ctx.Textures().ScaledByName("chasing-monster", infoLegenIconSize),
+			Icon:        ctx.Textures().ScaledByName(monsterName(tins2021.MonsterTypeChaser), infoLegendIconSize),
 			Description: "Monster that walks towards you.",
 		})
 	})
@@ -71,7 +74,7 @@ func newInfo(app *appContext, ctx ui.Context) ui.Control {
 				label("", "score"), // spacing
 				paragraphOpts(infoText, "score", labelOptions{TextAlignment: ui.AlignCenter}),
 				label("", "score"), // spacing
-				legend,
+				Center(legend),
 			},
 		},
 		Orientation: ui.OrientationVertical,

cmd/tins2021/levelcontroller.go

@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"image/color"
+	"log"
 	"math/rand"
 	"strconv"
 	"time"
@@ -20,25 +21,71 @@ type levelController struct {
 
 	Level *tins2021.Level
 
-	Cubes      cubeTexture
+	Cube       tins2021.NamedTexture
+	Inverted   tins2021.NamedTexture
 	Animations map[string]*tins2021.Animations
 
-	IdleMonsters   *tins2021.Animations
-	MovingMonsters *tins2021.Animations
+	IdleMonsters      *tins2021.Animations
+	MovingMonsters    *tins2021.Animations
+	DyingMonsters     *tins2021.Animations
+	DyingMonsterTypes map[geom.Point]tins2021.MonsterType
 
 	SmallFont *tins2021.BitmapFont
+
+	Controls map[ui.Key]tins2021.Direction
+
+	Highscore bool
 }
 
 func newLevelControl(app *appContext, ctx ui.Context, level *tins2021.Level) *levelController {
 	control := &levelController{app: app}
 	textures := ctx.Textures()
-	control.Cubes = newCubeTexture(textures, tins2021.Orange)
+	control.Cube = tins2021.MustCreateNamedTextureImage(textures, "cube", tins2021.GenerateCube(tins2021.Orange))
+	control.Inverted = tins2021.MustCreateNamedTextureImage(textures, "cube_inverted", tins2021.GenerateHole(tins2021.Orange))
 
 	small, err := tins2021.NewBitmapFont(ctx.Renderer(), ctx.Fonts().Font("small"), tins2021.NumericCharacters...)
 	if err != nil {
 		panic(err)
 	}
 	control.SmallFont = small
+	switch app.Settings.Controls.Type {
+	case controlsTypeArrows:
+		control.Controls = map[ui.Key]tins2021.Direction{
+			ui.KeyUp:    tins2021.DirectionUpLeft,
+			ui.KeyLeft:  tins2021.DirectionDownLeft,
+			ui.KeyDown:  tins2021.DirectionDownRight,
+			ui.KeyRight: tins2021.DirectionUpRight,
+		}
+	case controlsTypeCustom:
+		find := func(s string, defaultKey ui.Key) ui.Key {
+			for key, setting := range supportedCustomKeys {
+				if s == setting {
+					return key
+				}
+			}
+			return defaultKey
+		}
+		control.Controls = map[ui.Key]tins2021.Direction{
+			find(app.Settings.Controls.MoveUpLeft, ui.KeyW):    tins2021.DirectionUpLeft,
+			find(app.Settings.Controls.MoveDownLeft, ui.KeyA):  tins2021.DirectionDownLeft,
+			find(app.Settings.Controls.MoveDownRight, ui.KeyS): tins2021.DirectionDownRight,
+			find(app.Settings.Controls.MoveUpRight, ui.KeyD):   tins2021.DirectionUpRight,
+		}
+	default:
+		control.Controls = map[ui.Key]tins2021.Direction{
+			ui.KeyW: tins2021.DirectionUpLeft,
+			ui.KeyA: tins2021.DirectionDownLeft,
+			ui.KeyS: tins2021.DirectionDownRight,
+			ui.KeyD: tins2021.DirectionUpRight,
+		}
+	}
+
+	if app.Virtual.Enabled {
+		control.Controls[ui.KeyUp] = tins2021.DirectionUpLeft
+		control.Controls[ui.KeyLeft] = tins2021.DirectionDownLeft
+		control.Controls[ui.KeyDown] = tins2021.DirectionDownRight
+		control.Controls[ui.KeyRight] = tins2021.DirectionUpRight
+	}
 
 	control.Play(level)
 
@@ -49,11 +96,27 @@ func IsModifierPressed(modifiers ui.KeyModifier, pressed ui.KeyModifier) bool {
 	return modifiers&pressed == pressed
 }
 
+func (r *levelController) updateHighscore() bool {
+	highscores, highscore := r.app.Score.Highscores.AddScore(r.Level.Score, r.Level.Difficulty)
+	if highscore {
+		r.app.Score.Highscores = highscores
+	}
+	r.app.ResetCurrentScore()
+	return highscore
+}
+
 func (r *levelController) Handle(ctx ui.Context, e ui.Event) bool {
 	switch e := e.(type) {
 	case *ui.KeyDownEvent:
 		switch e.Key {
+		case ui.KeyEnter:
+			if r.Level.GameOver {
+				r.app.ShowHighscores(ctx)
+			}
 		case ui.KeyEscape:
+			if r.Level.StarsCollected == r.Level.Stars {
+				r.app.SetCurrentScore(r.Level)
+			}
 			r.app.ShowMainMenu(ctx)
 		}
 	}
@@ -67,23 +130,59 @@ func (r *levelController) Handle(ctx ui.Context, e ui.Event) bool {
 		case *ui.KeyDownEvent:
 			switch e.Key {
 			case ui.KeyEnter:
+				r.app.SetCurrentScore(r.Level)
 				r.app.PlayNext(ctx, r)
 			}
 		}
 		return false
 	}
 
+	checkGameOver := func() {
+		if r.Level.GameOver {
+			r.app.SetVirtualKeys(true, true, false)
+
+			r.Highscore = r.updateHighscore()
+			if r.Highscore {
+				r.app.Audio.PlaySample("level_new_high_score.mp3")
+			} else {
+				r.app.Audio.PlaySample("level_game_over.mp3")
+			}
+		}
+	}
+
+	checkLevelCompleted := func() {
+		if r.Level.StarsCollected == r.Level.Stars {
+			r.app.SetVirtualKeys(true, true, false)
+			r.app.Audio.PlaySample("level_completed.mp3")
+		}
+	}
+
+	monsterHit := func(hit *tins2021.MonsterHit) {
+		r.app.Audio.PlaySample("player_hurt.mp3")
+		if hit == nil {
+			log.Printf("player was hit by monster but we don't know exactly where?\n")
+		}
+		r.DyingMonsters.Frame(hit.Position)
+		r.DyingMonsterTypes[hit.Position] = hit.Type
+	}
+
 	switch e := e.(type) {
 	case *ui.KeyDownEvent:
-		switch e.Key {
-		case ui.KeyW:
-			r.Level.MovePlayer(tins2021.DirectionUpLeft)
-		case ui.KeyD:
-			r.Level.MovePlayer(tins2021.DirectionUpRight)
-		case ui.KeyS:
-			r.Level.MovePlayer(tins2021.DirectionDownRight)
-		case ui.KeyA:
-			r.Level.MovePlayer(tins2021.DirectionDownLeft)
+		dir, ok := r.Controls[e.Key]
+		if ok {
+			stars, lives := r.Level.StarsCollected, r.Level.Lives
+			_, hit := r.Level.MovePlayer(dir)
+			switch {
+			case r.Level.StarsCollected > stars:
+				r.app.Audio.PlaySample("player_collect_star.mp3")
+			case r.Level.Lives < lives:
+				monsterHit(hit)
+			case r.Level.Lives > lives:
+				r.app.Audio.PlaySample("player_collect_heart.mp3")
+			}
+			r.app.Audio.PlaySample("player_move.mp3")
+			checkGameOver()
+			checkLevelCompleted()
 		}
 	}
 
@@ -92,19 +191,22 @@ func (r *levelController) Handle(ctx ui.Context, e ui.Event) bool {
 	}
 	r.IdleMonsters.Update()
 	r.MovingMonsters.Update()
+	r.DyingMonsters.Update()
 	var jumped []geom.Point
 	for pos, animation := range r.MovingMonsters.Values {
-		if animation.Frame < 15 {
+		if animation.Frame < 40 { // after 40 frames the player hit is checked
 			continue
 		}
 		target := r.Level.MonsterTargets[pos]
 		if target == r.Level.Player { // player is hit
+			monsterHit(&tins2021.MonsterHit{Position: target, Type: r.Level.Monsters[pos].Type()})
 			r.Level.DestroyMonster(pos)
 			jumped = append(jumped, pos)
 			r.Level.DecrementLive()
+			checkGameOver()
 			continue
 		}
-		if animation.Frame < 20 {
+		if animation.Frame < 50 { // after 50 frames the animation has finished
 			continue
 		}
 		r.Level.MoveMonster(target, pos)
@@ -119,7 +221,7 @@ func (r *levelController) Handle(ctx ui.Context, e ui.Event) bool {
 	var jumping []geom.Point
 	for pos, animation := range r.IdleMonsters.Values {
 		for animation.Frame > 0 {
-			if rand.Intn(10) != 0 {
+			if rand.Intn(100) < 37 { // P = .37
 				monster, ok := r.Level.Monsters[pos]
 				if ok && monster != nil {
 					target, ok := monster.FindTarget(r.Level, pos)
@@ -127,6 +229,7 @@ func (r *levelController) Handle(ctx ui.Context, e ui.Event) bool {
 						r.Level.MonsterTargets[pos] = target
 						r.MovingMonsters.Frame(pos)
 						jumping = append(jumping, pos)
+						r.app.Audio.PlaySample("monster_jump.mp3")
 						break
 					}
 				}
@@ -146,17 +249,17 @@ func (r *levelController) Play(level *tins2021.Level) {
 	r.Level = level
 
 	r.Animations = map[string]*tins2021.Animations{
-		"star":  tins2021.NewAnimations(50*time.Millisecond, defaultAnimationFrames, true, true),
-		"heart": tins2021.NewAnimations(80*time.Millisecond, defaultAnimationFrames, true, true),
+		"star":    tins2021.NewAnimations(50*time.Millisecond, defaultAnimationFrames, true, true),
+		"heart":   tins2021.NewAnimations(80*time.Millisecond, defaultAnimationFrames, true, true),
+		"monster": tins2021.NewAnimations(80*time.Millisecond, defaultAnimationFrames, true, true),
 	}
-	r.IdleMonsters = tins2021.NewAnimations(500*time.Millisecond, 100, false, false)
-	r.MovingMonsters = tins2021.NewAnimations(50*time.Millisecond, 20, false, false)
+	r.IdleMonsters = tins2021.NewAnimations(40*time.Millisecond, 100, false, false)
+	r.MovingMonsters = tins2021.NewAnimations(16*time.Millisecond, 50, false, false)
+	r.DyingMonsters = tins2021.NewAnimations(16*time.Millisecond, 20, false, false)
+	r.DyingMonsterTypes = map[geom.Point]tins2021.MonsterType{}
 	for monster := range level.Monsters {
 		r.IdleMonsters.Frame(monster)
 	}
-	for _, monster := range r.app.MonsterTextureNames {
-		r.Animations[monster] = tins2021.NewAnimations(80*time.Millisecond, defaultAnimationFrames, true, true)
-	}
 }
 
 const defaultAnimationFrames = 20
@@ -167,7 +270,8 @@ func (r levelController) Render(ctx ui.Context) {
 	centerTopSquare := geom.PtF32(.5, .5*geom.Sin32(twelfth))
 	delta := geom.PtF32(geom.Cos32(twelfth), .5+centerTopSquare.Y)
 
-	view := r.Bounds().Size()
+	bounds := r.Bounds()
+	view := bounds.Size()
 	levelView := geom.PtF32(float32(r.Level.Bounds.Dx()+2)*delta.X, float32(r.Level.Bounds.Dy()+2)*delta.Y)
 	textureWidth := geom.Min32(
 		geom.Floor32(tins2021.TextureSize*view.X*.75/(levelView.X*tins2021.TextureSize)),
@@ -177,38 +281,43 @@ func (r levelController) Render(ctx ui.Context) {
 
 	delta = delta.Mul(textureWidth)
 	centerTopSquare = centerTopSquare.Mul(textureWidth)
-	scoreView := geom.RectF32(levelView.X*textureWidth, offsetY+delta.Y, view.X, view.Y-delta.Y-offsetY)
+	scoreView := geom.RectF32(levelView.X*textureWidth, offsetY+delta.Y, view.X, view.Y-delta.Y-offsetY).Add(bounds.Min)
 
 	delta.X = geom.Round32(delta.X)
 	delta.Y = geom.Round32(delta.Y)
 	toScreen := func(p geom.Point) geom.PointF32 {
 		if p.Y%2 == 0 {
-			return p.ToF32().Mul2D(delta.XY()).Add2D(.5*delta.X, offsetY)
+			return p.ToF32().Mul2D(delta.XY()).Add2D(.5*delta.X, offsetY).Add(bounds.Min)
 		}
-		return p.ToF32().Mul2D(delta.XY()).Add2D(0, offsetY)
+		return p.ToF32().Mul2D(delta.XY()).Add2D(0, offsetY).Add(bounds.Min)
 	}
 
 	renderer := ctx.Renderer()
-	textures := ctx.Textures()
-	cubes := r.Cubes.Scaled(textures, scale)
+	cube := r.Cube.Scaled(scale)
+	inverted := r.Inverted.Scaled(scale)
 
-	cubeWidth := float32(cubes.Normal.Width())
-	cubeHeight := float32(cubes.Normal.Height())
+	cubeWidth := float32(cube.Width())
+	cubeHeight := float32(cube.Height())
 
 	player := ctx.Textures().ScaledByName("dwarf", scale*.6)
-	star := tins2021.NewAnimatedTexture(ctx.Textures().ScaledByName("star", scale*.4), defaultAnimationFrames)
-	heart := tins2021.NewAnimatedTexture(ctx.Textures().ScaledByName("heart", scale*.4), defaultAnimationFrames)
+	star := r.app.StarTexture.Scale(scale * .4)
+	heart := r.app.HeartTexture.Scale(scale * .4)
 	monsterTextures := map[tins2021.MonsterType]tins2021.AnimatedTexture{}
-	for typ, name := range r.app.MonsterTextureNames {
-		monsterTextures[typ] = tins2021.NewAnimatedTexture(ctx.Textures().ScaledByName(name, scale*.4), defaultAnimationFrames)
+	for typ, animation := range r.app.MonsterTextures {
+		monsterTextures[typ] = animation.Scale(scale * .4)
 	}
-	propOffset := geom.PtF32(-.5*float32(star.Texture.Height()), -.8*float32(star.Texture.Height()))
+	dyingMonsterTextures := map[tins2021.MonsterType]tins2021.AnimatedTexture{}
+	for typ, animation := range r.app.DyingMonsterTextures {
+		dyingMonsterTextures[typ] = animation.Scale(scale * .4)
+	}
+	propHeight := star.FrameSize(0).Y
+	propOffset := geom.PtF32(-.5*float32(propHeight), -.8*float32(propHeight))
 
 	distances := r.Level.Tiles.Distances(r.Level.Player)
 
-	positionOfTile := func(position geom.Point, tile *tins2021.Tile) (topLeft, centerOfPlatform geom.PointF32) {
+	positionOfTile := func(position geom.Point) (topLeft, centerOfPlatform geom.PointF32) {
 		topLeft = toScreen(position)
-		if tile.Inversed {
+		if r.Level.Tiles[position].Inversed {
 			return topLeft, topLeft.Add2D(.5*float32(cubeWidth), .6*float32(cubeHeight))
 		}
 		return topLeft, topLeft.Add2D(.5*float32(cubeWidth), .2*float32(cubeHeight))
@@ -221,10 +330,10 @@ func (r levelController) Render(ctx ui.Context) {
 			if tile == nil {
 				continue
 			}
-			screenPos, platformPos := positionOfTile(pos, tile)
-			tileTexture := cubes.Normal.Texture
+			screenPos, platformPos := positionOfTile(pos)
+			tileTexture := cube
 			if tile.Inversed {
-				tileTexture = cubes.Inversed.Texture
+				tileTexture = inverted
 			}
 			renderer.DrawTexturePoint(tileTexture, screenPos)
 			if r.app.Debug {
@@ -248,19 +357,51 @@ func (r levelController) Render(ctx ui.Context) {
 		renderer.DrawTexturePoint(player, playerPosition.Add(centerTopSquare))
 	}
 
-	for pos, monsterType := range r.Level.Monsters {
-		tile := r.Level.Tiles[pos]
-		if tile == nil {
+	for y := r.Level.Bounds.Min.Y; y < r.Level.Bounds.Max.Y; y++ {
+		for x := r.Level.Bounds.Min.X; x < r.Level.Bounds.Max.X; x++ {
+			pos := geom.Pt(x, y)
+			monsterType, ok := r.Level.Monsters[pos]
+			if !ok {
+				continue
+			}
+			tile := r.Level.Tiles[pos]
+			if tile == nil {
+				continue
+			}
+			texture := monsterTextures[monsterType.Type()]
+			_, platformPos := positionOfTile(pos)
+			if target, ok := r.Level.MonsterTargets[pos]; ok {
+				_, targetPlatformPos := positionOfTile(target)
+				dt := float32(r.MovingMonsters.Frame(pos)) / 50.
+				delta := targetPlatformPos.Sub(platformPos)
+				curve := geom.PtF32(0, .6*geom.Sin32(dt*geom.Pi)*textureWidth)
+				interpolatedPos := platformPos.Add(delta.Mul(dt)).Sub(curve)
+				texture.Draw(renderer, interpolatedPos.Add(propOffset), r.Animations["monster"].Frame(pos))
+			} else {
+				texture.Draw(renderer, platformPos.Add(propOffset), r.Animations["monster"].Frame(pos))
+			}
+		}
+	}
+
+	var died []geom.Point
+	for pos, monster := range r.DyingMonsterTypes {
+		frame := r.DyingMonsters.Frame(pos)
+		if frame == 20 {
+			died = append(died, pos)
 			continue
 		}
-		_, platformPos := positionOfTile(pos, tile)
-		name := r.app.MonsterTextureNames[monsterType.Type()]
-		monsterTextures[monsterType.Type()].Draw(renderer, platformPos.Add(propOffset), r.Animations[name].Frame(pos))
+		texture := dyingMonsterTextures[monster]
+		_, platformPos := positionOfTile(pos)
+		texture.Draw(renderer, platformPos.Add(propOffset), frame)
+	}
+	for _, pos := range died {
+		delete(r.DyingMonsters.Values, pos)
+		delete(r.DyingMonsterTypes, pos)
 	}
 
 	textColor := ctx.Style().Palette.Text
 	scoreFont := ctx.Fonts().Font("score")
-	fontOffsetY := .5 * (float32(star.Texture.Height()) - scoreFont.Height())
+	fontOffsetY := .5 * (float32(propHeight) - scoreFont.Height())
 
 	// stars & hearts
 	scoreTopLeft := scoreView.Min
@@ -282,24 +423,34 @@ func (r levelController) Render(ctx ui.Context) {
 	scoreTopLeft.Y -= scoreFont.Height()
 	renderer.Text(scoreFont, scoreTopLeft, textColor, "Score:")
 
-	bounds := r.Bounds()
-	centerX := .5 * bounds.Dx()
+	centerX := bounds.Min.X + .5*bounds.Dx()
 	titleFont := ctx.Fonts().Font("title")
 
+	screenSize := ctx.Renderer().Size().ToF32()
+	screen := geom.RectF32(0, 0, screenSize.X, screenSize.Y)
 	if r.Level.GameOver {
-		renderer.FillRectangle(bounds, zntg.MustHexColor(`#0000007F`))
+		renderer.FillRectangle(screen, zntg.MustHexColor(`#0000007F`))
 		offsetY := .5*bounds.Dy() - titleFont.Height()
 		renderer.TextAlign(titleFont, geom.PtF32(centerX, offsetY), textColor, "GAME OVER", ui.AlignCenter)
 
+		if r.Highscore {
+			highscoreFont := ctx.Fonts().Font("default")
+			offsetY += titleFont.Height() + scoreFont.Height()
+			renderer.TextAlign(highscoreFont, geom.PtF32(centerX, offsetY), ctx.Style().Palette.Primary, "NEW HIGHSCORE", ui.AlignCenter)
+		}
+
 		offsetY += titleFont.Height() + scoreFont.Height()
 		renderer.TextAlign(scoreFont, geom.PtF32(centerX, offsetY), textColor, fmt.Sprintf("Final score: %d", r.Level.Score), ui.AlignCenter)
 
+		offsetY += 2 * scoreFont.Height()
+		renderer.TextAlign(scoreFont, geom.PtF32(centerX, offsetY), textColor, "Press [enter] to show highscores.", ui.AlignCenter)
+
 		offsetY += 2 * scoreFont.Height()
 		renderer.TextAlign(scoreFont, geom.PtF32(centerX, offsetY), textColor, "Press [escape] to quit.", ui.AlignCenter)
 	} else if r.Level.StarsCollected == r.Level.Stars {
-		renderer.FillRectangle(bounds, zntg.MustHexColor(`#0000007F`))
+		renderer.FillRectangle(screen, zntg.MustHexColor(`#0000007F`))
 		offsetY := .5*bounds.Dy() - titleFont.Height()
-		renderer.TextAlign(titleFont, geom.PtF32(.5*bounds.Dx(), offsetY), textColor, "COMPLETED", ui.AlignCenter)
+		renderer.TextAlign(titleFont, geom.PtF32(centerX, offsetY), textColor, "COMPLETED", ui.AlignCenter)
 
 		offsetY += titleFont.Height() + scoreFont.Height()
 		renderer.TextAlign(scoreFont, geom.PtF32(centerX, offsetY), textColor, fmt.Sprintf("Score: %d", r.Level.Score), ui.AlignCenter)

cmd/tins2021/mainmenu.go

@@ -29,6 +29,8 @@ func (c *center) Arrange(ctx ui.Context, bounds geom.RectangleF32, offset geom.P
 
 type mainMenu struct {
 	ui.StackPanel
+
+	music *Music
 }
 
 func newMainMenu(app *appContext, ctx ui.Context) ui.Control {
@@ -37,10 +39,23 @@ func newMainMenu(app *appContext, ctx ui.Context) ui.Control {
 	menu.Add("Play", func(ctx ui.Context) {
 		app.Play(ctx)
 	})
+	resume := app.Score.Current.Difficulty > 0
+	if resume {
+		menu.Add("Resume", func(ctx ui.Context) { app.PlayResume(ctx) })
+	}
+	menu.Add("Highscores", func(ctx ui.Context) { app.ShowHighscores(ctx) })
+	menu.Add("Settings", func(ctx ui.Context) { app.ShowSettings(ctx) })
 	menu.Add("Credits", func(ctx ui.Context) { app.ShowCredits(ctx) })
 	menu.Add("Quit", func(ctx ui.Context) { ctx.Quit() })
 
-	menu.Activate(1) // play
+	if resume {
+		menu.Activate(2) // resume
+	} else {
+		menu.Activate(1) // play
+	}
+	menu.ActiveChanged.AddHandlerEmpty((func(ui.Context) {
+		app.MenuInteraction()
+	}))
 	ctx.Animate()
 
 	return Center(&mainMenu{

cmd/tins2021/menu.go

@@ -11,6 +11,8 @@ type Menu struct {
 
 	active  int
 	buttons []*MenuButton
+
+	ActiveChanged ui.Events
 }
 
 func NewMenu() *Menu {
@@ -25,7 +27,7 @@ func (m *Menu) Activate(i int) {
 	if len(m.buttons) == 0 || i < 0 {
 		return
 	}
-	m.updateActiveButton(i % len(m.buttons))
+	m.updateActiveButton(nil, i%len(m.buttons))
 }
 
 func (m *Menu) Add(text string, click func(ui.Context)) {
@@ -54,29 +56,34 @@ func (m *Menu) Handle(ctx ui.Context, e ui.Event) bool {
 				onEscape(ctx)
 			}
 		case ui.KeyDown:
-			m.updateActiveButton((m.active + 1) % len(m.buttons))
+			m.updateActiveButton(ctx, (m.active+1)%len(m.buttons))
 		case ui.KeyUp:
-			m.updateActiveButton((m.active + len(m.buttons) - 1) % len(m.buttons))
+			m.updateActiveButton(ctx, (m.active+len(m.buttons)-1)%len(m.buttons))
 		case ui.KeyEnter:
 			m.buttons[m.active].InvokeClick(ctx)
 		}
 	case *ui.MouseMoveEvent:
 		for i, button := range m.buttons {
 			if button.IsOver() {
-				m.updateActiveButton(i)
+				m.updateActiveButton(ctx, i)
+				ctx.Renderer().SetMouseCursor(ui.MouseCursorPointer)
 				break
 			}
 		}
-		m.updateActiveButton(m.active)
+		m.updateActiveButton(ctx, m.active)
 	}
 	return false
 }
 
-func (m *Menu) updateActiveButton(active int) {
+func (m *Menu) updateActiveButton(ctx ui.Context, active int) {
+	change := m.active != active
 	m.active = active
 	for i, btn := range m.buttons {
 		btn.Over = i == m.active
 	}
+	if change && ctx != nil {
+		m.ActiveChanged.Notify(ctx, nil)
+	}
 }
 
 type MenuButton struct {

cmd/tins2021/resources/textures.txt

@@ -1 +1 @@
-dwarf: images/dwarf.png
+dwarf: resources/textures/gnome.png

cmd/tins2021/settings.go

@@ -0,0 +1,899 @@
+package main
+
+import (
+	"fmt"
+	"image"
+	"image/color"
+
+	"github.com/golang/freetype/truetype"
+	"github.com/llgcode/draw2d"
+	"github.com/llgcode/draw2d/draw2dimg"
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/tins2021"
+	"opslag.de/schobers/zntg"
+	"opslag.de/schobers/zntg/ui"
+)
+
+const (
+	controlsTypeWASD   = "wasd"
+	controlsTypeArrows = "arrows"
+	controlsTypeCustom = "custom"
+)
+
+const keyboardKeyCornerRadius = .1 * keyboardKeyWidth
+const keyboardKeyHeight = .2 * keyboardLayoutTextureWidth
+const keyboardKeySkew = .15
+const keyboardKeyWidth = .25 * keyboardLayoutTextureWidth
+const keyboardLayoutTextureHeight = 256
+const keyboardLayoutTextureWidth = 2 * keyboardLayoutTextureHeight
+
+const maxVolume = 2
+const minVolume = -8
+
+const volumeControlBarWidth = 154
+const volumeControlKnobWidth = 154
+const volumeControlTextureHeight = 256
+const volumeControlTextureWidth = 2*volumeControlKnobWidth + 2*volumeControlBarWidth
+
+func drawKey(ctx *draw2dimg.GraphicContext, font *truetype.Font, center geom.PointF, key rune, color color.Color) {
+	const keyHeight_5 = .5 * keyboardKeyHeight
+
+	skewed := func(x, y float64) (float64, float64) {
+		return center.X + x - keyboardKeySkew*y, center.Y + y
+	}
+	drawKeyOutline(ctx, center, geom.PtF(keyboardKeyWidth, keyboardKeyHeight), keyboardKeySkew, color)
+
+	setDraw2DFont(ctx, font)
+	ctx.SetFontSize(keyHeight_5)
+
+	text := fmt.Sprintf("%c", key)
+	textCenter := draw2DCenterString(ctx, text)
+	textX, textY := skewed(textCenter.X, textCenter.Y)
+	ctx.FillStringAt(text, textX, textY)
+}
+
+func drawKeyOutline(ctx *draw2dimg.GraphicContext, center, size geom.PointF, skew float64, color color.Color) {
+	const cornerRadius = keyboardKeyCornerRadius
+	var keyHeight_5 = .5 * size.Y
+	var keyWidth_5 = .5 * size.X
+
+	skewed := func(x, y float64) (float64, float64) {
+		return center.X + x - skew*y, center.Y + y
+	}
+
+	corner := func(x, y, start float64) {
+		for a := start; a <= start+.25; a += .025 {
+			aa := a * 2 * geom.Pi
+			ctx.LineTo(skewed(x+cornerRadius*geom.Cos(aa), y-cornerRadius*geom.Sin(aa)))
+		}
+	}
+
+	ctx.SetLineWidth(3)
+	ctx.SetStrokeColor(color)
+	ctx.SetFillColor(color)
+	ctx.MoveTo(skewed(-keyWidth_5+cornerRadius, keyHeight_5))
+	ctx.LineTo(skewed(keyWidth_5-cornerRadius, keyHeight_5))
+	corner(keyWidth_5-cornerRadius, keyHeight_5-cornerRadius, .75)
+	ctx.LineTo(skewed(keyWidth_5, -keyHeight_5+cornerRadius))
+	corner(keyWidth_5-cornerRadius, -keyHeight_5+cornerRadius, 0)
+	ctx.LineTo(skewed(-keyWidth_5+cornerRadius, -keyHeight_5))
+	corner(-keyWidth_5+cornerRadius, -keyHeight_5+cornerRadius, .25)
+	ctx.LineTo(skewed(-keyWidth_5, keyHeight_5-cornerRadius))
+	corner(-keyWidth_5+cornerRadius, keyHeight_5-cornerRadius, .5)
+	ctx.Close()
+	ctx.Stroke()
+}
+
+func generateArrowKeys(resources ui.Resources) image.Image {
+	return generateKeys(resources,
+		keyboardLayoutKey{Position: geom.PtF(.53, .25), Key: '↑'},
+		keyboardLayoutKey{Position: geom.PtF(.2, .75), Key: '←'},
+		keyboardLayoutKey{Position: geom.PtF(.5, .75), Key: '↓'},
+		keyboardLayoutKey{Position: geom.PtF(.8, .75), Key: '→'},
+	)
+}
+
+func generateArrowKeysHighlight(resources ui.Resources, highlight [4]bool) image.Image {
+	spaceOrRune := func(r rune, space bool) rune {
+		if space {
+			return ' '
+		}
+		return r
+	}
+
+	return generateKeys(resources,
+		keyboardLayoutKey{Position: geom.PtF(.53, .25), Key: spaceOrRune('↑', !highlight[0]), Highlight: highlight[0]},
+		keyboardLayoutKey{Position: geom.PtF(.2, .75), Key: spaceOrRune('←', !highlight[1]), Highlight: highlight[1]},
+		keyboardLayoutKey{Position: geom.PtF(.5, .75), Key: spaceOrRune('↓', !highlight[2]), Highlight: highlight[2]},
+		keyboardLayoutKey{Position: geom.PtF(.8, .75), Key: spaceOrRune('→', !highlight[3]), Highlight: highlight[3]},
+	)
+}
+
+func generateCustomKeys(resources ui.Resources, keys [4]rune) image.Image {
+	return generateKeys(resources,
+		keyboardLayoutKey{Position: geom.PtF(.45, .25), Key: keys[0]},
+		keyboardLayoutKey{Position: geom.PtF(.2, .75), Key: keys[1]},
+		keyboardLayoutKey{Position: geom.PtF(.5, .75), Key: keys[2]},
+		keyboardLayoutKey{Position: geom.PtF(.8, .75), Key: keys[3]},
+	)
+}
+
+func generateKeys(resources ui.Resources, keys ...keyboardLayoutKey) image.Image {
+	im := image.NewRGBA(image.Rect(0, 0, keyboardLayoutTextureWidth, keyboardLayoutTextureHeight))
+	ctx := draw2dimg.NewGraphicContext(im)
+
+	font, err := parseScoreFont(resources)
+	if err != nil {
+		panic(err)
+	}
+
+	for _, key := range keys {
+		var color color.Color = color.White
+		if key.Highlight {
+			color = zntg.MustHexColor(tins2021.Orange)
+		}
+		center := geom.PtF(key.Position.X*keyboardLayoutTextureWidth, key.Position.Y*keyboardLayoutTextureHeight)
+		drawKey(ctx, font, center, key.Key, color)
+	}
+
+	return im
+}
+
+func generateVolumeControlTexture() (image.Image, map[string]geom.RectangleF) {
+	im := image.NewRGBA(image.Rect(0, 0, volumeControlTextureWidth, volumeControlTextureHeight))
+	ctx := draw2dimg.NewGraphicContext(im)
+
+	const unitMultiplier = float64(volumeControlTextureHeight)
+	var left float64
+	coord := func(x, y float64) (float64, float64) {
+		return left + x*unitMultiplier, y * unitMultiplier
+	}
+
+	regions := map[string]geom.RectangleF{}
+	ctx.SetFillColor(color.White)
+	ctx.SetStrokeColor(color.White)
+	ctx.SetLineCap(draw2d.SquareCap)
+
+	ctx.SetLineWidth(16)
+	ctx.MoveTo(coord(.1, .5))
+	ctx.LineTo(coord(.4, .2))
+	ctx.LineTo(coord(.52, .32))
+	ctx.LineTo(coord(.52, .68))
+	ctx.LineTo(coord(.4, .8))
+	ctx.Close()
+	ctx.Stroke()
+	regions["leftKnob"] = geom.RectF(0, 0, volumeControlKnobWidth, volumeControlTextureHeight)
+
+	left += volumeControlKnobWidth
+	ctx.SetLineWidth(16)
+	ctx.MoveTo(coord(.1, .2))
+	ctx.LineTo(coord(.3, .0))
+	ctx.LineTo(coord(.5, .2))
+	ctx.LineTo(coord(.5, .8))
+	ctx.LineTo(coord(.3, 1))
+	ctx.LineTo(coord(.1, .8))
+	ctx.Close()
+	ctx.Stroke()
+	regions["bar"] = geom.RectF(left, 0, left+volumeControlBarWidth, volumeControlTextureHeight)
+
+	left += volumeControlBarWidth
+	ctx.MoveTo(coord(.1, .2))
+	ctx.LineTo(coord(.3, .0))
+	ctx.LineTo(coord(.5, .2))
+	ctx.LineTo(coord(.5, .8))
+	ctx.LineTo(coord(.3, 1))
+	ctx.LineTo(coord(.1, .8))
+	ctx.Close()
+	ctx.FillStroke()
+	regions["barFilled"] = geom.RectF(left, 0, left+volumeControlBarWidth, volumeControlTextureHeight)
+
+	left += volumeControlBarWidth
+	ctx.SetLineWidth(16)
+	ctx.MoveTo(coord(.5, .5))
+	ctx.LineTo(coord(.2, .2))
+	ctx.LineTo(coord(.08, .32))
+	ctx.LineTo(coord(.08, .68))
+	ctx.LineTo(coord(.2, .8))
+	ctx.Close()
+	ctx.Stroke()
+	regions["rightKnob"] = geom.RectF(left, 0, left+volumeControlKnobWidth, volumeControlTextureHeight)
+
+	return im, regions
+}
+
+func generateWASDKeys(resources ui.Resources) image.Image {
+	return generateKeys(resources,
+		keyboardLayoutKey{Position: geom.PtF(.45, .25), Key: 'W'},
+		keyboardLayoutKey{Position: geom.PtF(.2, .75), Key: 'A'},
+		keyboardLayoutKey{Position: geom.PtF(.5, .75), Key: 'S'},
+		keyboardLayoutKey{Position: geom.PtF(.8, .75), Key: 'D'},
+	)
+}
+
+type keyboardLayoutKey struct {
+	Position  geom.PointF
+	Key       rune
+	Highlight bool
+}
+
+type keyboardLayoutSettings struct {
+	ui.ControlBase
+
+	app     *appContext
+	handler SettingHandler
+
+	Active         bool
+	ActiveLayout   int
+	SelectedLayout int
+
+	SelectingCustom int
+}
+
+func newKeyboardLayoutSettings(app *appContext, ctx ui.Context, handler SettingHandler) *keyboardLayoutSettings {
+	ctx.Textures().CreateTextureGo("layout-wasd", generateWASDKeys(ctx.Resources()), true)
+	ctx.Textures().CreateTextureGo("layout-arrows", generateArrowKeys(ctx.Resources()), true)
+	ctx.Textures().CreateTextureGo("layout-select-1", generateArrowKeysHighlight(ctx.Resources(), [4]bool{true, false, false, false}), true)
+	ctx.Textures().CreateTextureGo("layout-select-2", generateArrowKeysHighlight(ctx.Resources(), [4]bool{false, true, false, false}), true)
+	ctx.Textures().CreateTextureGo("layout-select-3", generateArrowKeysHighlight(ctx.Resources(), [4]bool{false, false, true, false}), true)
+	ctx.Textures().CreateTextureGo("layout-select-4", generateArrowKeysHighlight(ctx.Resources(), [4]bool{false, false, false, true}), true)
+
+	var layout int
+	switch app.Settings.Controls.Type {
+	case controlsTypeArrows:
+		layout = 1
+	case controlsTypeCustom:
+		layout = 2
+	}
+
+	settings := &keyboardLayoutSettings{app: app, handler: handler, ActiveLayout: layout, SelectedLayout: layout}
+	settings.renderCustomLayout(ctx)
+	return settings
+}
+
+func (s *keyboardLayoutSettings) DesiredSize(ctx ui.Context, size geom.PointF32) geom.PointF32 {
+	scale := tins2021.FindScaleRound(keyboardLayoutTextureWidth, .28*size.X)
+	font := ctx.Fonts().Font("default")
+	return geom.PtF32(geom.NaN32(), 2*font.Height()+scale*keyboardLayoutTextureHeight)
+}
+
+func (s *keyboardLayoutSettings) Handle(ctx ui.Context, e ui.Event) bool {
+	if s.ControlBase.Handle(ctx, e) {
+		return true
+	}
+	switch e := e.(type) {
+	case *ui.KeyDownEvent:
+		if s.SelectingCustom > 0 {
+			switch e.Key {
+			case ui.KeyEscape:
+				s.SelectingCustom = 0
+				s.app.MenuInteraction()
+				return true
+			}
+			key, ok := supportedCustomKeys[e.Key]
+			if ok {
+				switch s.SelectingCustom {
+				case 1:
+					s.app.Settings.Controls.MoveUpLeft = key
+				case 2:
+					s.app.Settings.Controls.MoveDownLeft = key
+				case 3:
+					s.app.Settings.Controls.MoveDownRight = key
+				case 4:
+					s.app.Settings.Controls.MoveUpRight = key
+				}
+				s.renderCustomLayout(ctx)
+
+				s.SelectingCustom++
+				if s.SelectingCustom == 5 {
+					s.SelectingCustom = 0
+					s.SelectedLayout = 2
+					s.app.Settings.Controls.Type = controlsTypeCustom
+				}
+
+				s.app.MenuInteraction()
+			}
+			return true
+		}
+		switch e.Key {
+		case ui.KeyEscape:
+			s.app.ShowMainMenu(ctx)
+			s.app.MenuInteraction()
+			return true
+		case ui.KeyLeft:
+			if s.Active {
+				s.setActiveLayout(s.ActiveLayout - 1)
+			}
+		case ui.KeyRight:
+			if s.Active {
+				s.setActiveLayout(s.ActiveLayout + 1)
+			}
+		case ui.KeyEnter:
+			if s.Active {
+				s.selectLayout()
+			}
+		}
+	case *ui.MouseMoveEvent:
+		if s.SelectingCustom == 0 {
+			layout := s.isOverLayout(ctx, e.Pos())
+			if layout > -1 {
+				s.setActiveLayout(layout)
+				s.handler.Activated(ctx)
+				ctx.Renderer().SetMouseCursor(ui.MouseCursorPointer)
+			}
+		}
+		s.Active = s.IsOver()
+	case *ui.MouseButtonDownEvent:
+		if s.SelectingCustom == 0 {
+			if e.Button == ui.MouseButtonLeft {
+				layout := s.isOverLayout(ctx, e.Pos())
+				if layout > -1 {
+					s.setActiveLayout(layout) // to be sure, mouse move should've set this already
+					s.selectLayout()
+				}
+			}
+		}
+	}
+	return false
+}
+
+func (s *keyboardLayoutSettings) IsActive() bool { return s.Active }
+
+func (s *keyboardLayoutSettings) isOverLayout(ctx ui.Context, mouse geom.PointF32) int {
+	bounds := s.Bounds()
+	width := bounds.Dx()
+	mouse = mouse.Sub(s.Offset())
+
+	scale := tins2021.FindScaleRound(keyboardLayoutTextureWidth, .28*width)
+
+	font := ctx.Fonts().Font("default")
+
+	top := bounds.Min.Y
+	bottom := top + 2*font.Height() + scale*keyboardLayoutTextureHeight
+
+	for i := 0; i < 3; i++ {
+		left := (.04 + .32*float32(i)) * width
+		right := left + .28*width
+		if mouse.In(geom.RectF32(left, top, right, bottom)) {
+			return i
+		}
+	}
+	return -1
+}
+
+func (s *keyboardLayoutSettings) PostRender(ctx ui.Context) {
+	bounds := s.Bounds()
+	width := bounds.Dx()
+	renderer := ctx.Renderer()
+
+	scale := tins2021.FindScaleRound(keyboardLayoutTextureWidth, .28*width)
+	font := ctx.Fonts().Font("default")
+
+	normalColor := ctx.Style().Palette.Text
+
+	top := bounds.Min.Y
+	layoutTop := top + 2*font.Height()
+
+	if s.SelectingCustom > 0 {
+		renderer.FillRectangle(geom.ZeroPtF32.RectRel(renderer.Size().ToF32()), zntg.MustHexColor(`#000000DF`))
+
+		selectTexture := fmt.Sprintf("layout-select-%d", s.SelectingCustom)
+
+		layoutLeft := .36 * width
+		layoutCenter := layoutLeft + .14*width
+		renderer.TextAlign(font, geom.PtF32(layoutCenter, top), normalColor, "PRESS KEY TO ASSIGN", ui.AlignCenter)
+		renderer.DrawTexturePoint(ctx.Textures().ScaledByName(selectTexture, scale), geom.PtF32(layoutLeft, layoutTop))
+	}
+}
+
+func (s *keyboardLayoutSettings) Render(ctx ui.Context) {
+	bounds := s.Bounds()
+	width := bounds.Dx()
+	renderer := ctx.Renderer()
+
+	scale := tins2021.FindScaleRound(keyboardLayoutTextureWidth, .28*width)
+	font := ctx.Fonts().Font("default")
+
+	layouts := []string{
+		"WASD",
+		"ARROWS",
+		"CUSTOM",
+	}
+	layoutTextures := []string{"layout-wasd", "layout-arrows", "layout-custom"}
+
+	normalColor := ctx.Style().Palette.Text
+	highlightColor := ctx.Style().Palette.Primary
+
+	top := bounds.Min.Y
+	layoutTop := top + 2*font.Height()
+	for i, layout := range layouts {
+		layoutLeft := (.04 + .32*float32(i)) * width
+		layoutCenter := layoutLeft + .14*width
+
+		textColor := normalColor
+		layoutColor := normalColor
+		if s.ActiveLayout == i {
+			textColor = highlightColor
+		}
+		if s.SelectedLayout == i {
+			layoutColor = highlightColor
+		}
+
+		renderer.TextAlign(font, geom.PtF32(layoutCenter, top), textColor, layout, ui.AlignCenter)
+		renderer.DrawTexturePointOptions(ctx.Textures().ScaledByName(layoutTextures[i], scale), geom.PtF32(layoutLeft, layoutTop), ui.DrawOptions{Tint: layoutColor})
+	}
+}
+
+func (s *keyboardLayoutSettings) renderCustomLayout(ctx ui.Context) {
+	runeOrQuestionMark := func(s string) rune {
+		if len(s) == 0 {
+			return '?'
+		}
+		return []rune(s)[0]
+	}
+	customKeys := [4]rune{
+		runeOrQuestionMark(s.app.Settings.Controls.MoveUpLeft),
+		runeOrQuestionMark(s.app.Settings.Controls.MoveDownLeft),
+		runeOrQuestionMark(s.app.Settings.Controls.MoveDownRight),
+		runeOrQuestionMark(s.app.Settings.Controls.MoveUpRight),
+	}
+	ctx.Textures().CreateTextureGo("layout-custom", generateCustomKeys(ctx.Resources(), customKeys), true)
+}
+
+func (s *keyboardLayoutSettings) selectLayout() {
+	s.app.MenuInteraction()
+	switch s.ActiveLayout {
+	case 0:
+		s.SelectedLayout = 0
+		s.app.Settings.Controls.Type = controlsTypeWASD
+	case 1:
+		s.SelectedLayout = 1
+		s.app.Settings.Controls.Type = controlsTypeArrows
+	case 2:
+		s.SelectingCustom = 1
+	}
+}
+
+func (s *keyboardLayoutSettings) SetActive(_ ui.Context, active bool) { s.Active = active }
+
+func (s *keyboardLayoutSettings) setActiveLayout(layout int) {
+	layout = (layout + 3) % 3
+	change := layout != s.ActiveLayout
+	s.Active = true
+	s.ActiveLayout = (layout + 3) % 3
+	if change {
+		s.app.MenuInteraction()
+	}
+}
+
+type Setting interface {
+	IsActive() bool
+	SetActive(ui.Context, bool)
+}
+
+type SettingHandler interface {
+	Interacted()
+	Activated(ui.Context)
+}
+
+type settingHandler struct {
+	app      *appContext
+	settings *settings
+
+	Setting int
+}
+
+func (h *settingHandler) Interacted() {
+	h.app.MenuInteraction()
+}
+
+func (h *settingHandler) Activated(ctx ui.Context) {
+	h.settings.setActive(ctx, h.Setting, false)
+}
+
+type settings struct {
+	ui.Proxy
+
+	active      int
+	app         *appContext
+	overflow    ui.ScrollControl
+	musicVolume *volumeControl
+	soundVolume *volumeControl
+	virtual     *toggleControl
+	keyboard    *keyboardLayoutSettings
+}
+
+func newSettings(app *appContext, ctx ui.Context) *settings {
+	volumeControlTexture := generateTextureMapFromImage(ctx.Textures(), "volume-control", generateVolumeControlTexture)
+
+	settings := &settings{app: app}
+	var s int
+	handler := func() *settingHandler {
+		defer func() { s++ }()
+		return &settingHandler{Setting: s, settings: settings, app: app}
+	}
+
+	settings.musicVolume = newVolumeControl(handler(), volumeControlTexture, "Music", app.Settings.Audio.MusicVolume, func(volume float64) { app.setMusicVolume(volume) })
+	settings.soundVolume = newVolumeControl(handler(), volumeControlTexture, "Sounds", app.Settings.Audio.SoundVolume, func(volume float64) { app.setSoundVolume(volume) })
+	settings.virtual = newToggleControl(handler(), "VIRTUAL CONTROLS", app.Settings.Controls.Virtual, func(on bool) {
+		app.Settings.Controls.Virtual = on
+		app.Virtual.Enabled = on
+	})
+	settings.keyboard = newKeyboardLayoutSettings(app, ctx, handler())
+
+	settings.Content = ui.StretchWidth(ui.BuildStackPanel(ui.OrientationVertical, func(p *ui.StackPanel) {
+		p.AddChild(Center(label("SETTINGS", "title")))
+		p.AddChild(label("", "score"))
+		settings.overflow = ui.Overflow(ui.BuildStackPanel(ui.OrientationVertical, func(p *ui.StackPanel) {
+			p.AddChild(Center(settings.musicVolume))
+			p.AddChild(label("", "score"))
+			p.AddChild(Center(settings.soundVolume))
+			p.AddChild(label("", "score"))
+			p.AddChild(Center(settings.virtual))
+			p.AddChild(label("", "score"))
+			p.AddChild(settings.keyboard)
+		}))
+		p.AddChild(settings.overflow)
+	}))
+
+	settings.musicVolume.Active = true
+
+	return settings
+}
+
+func (s *settings) currentActive() int {
+	switch {
+	case s.musicVolume.Active:
+		return 0
+	case s.soundVolume.Active:
+		return 1
+	case s.virtual.Active:
+		return 2
+	case s.keyboard.Active:
+		return 3
+	default:
+		return 0
+	}
+}
+
+func (s *settings) Handle(ctx ui.Context, e ui.Event) bool {
+	if s.keyboard.Active && s.keyboard.SelectingCustom > 0 {
+		return s.Proxy.Handle(ctx, e)
+	}
+
+	switch e := e.(type) {
+	case *ui.KeyDownEvent:
+		switch e.Key {
+		case ui.KeyUp:
+			s.setActive(ctx, s.currentActive()-1, true)
+		case ui.KeyDown:
+			s.setActive(ctx, s.currentActive()+1, true)
+		}
+	}
+
+	return s.Proxy.Handle(ctx, e)
+}
+
+func (s *settings) Render(ctx ui.Context) {
+	s.Proxy.Render(ctx)
+	s.keyboard.PostRender(ctx)
+}
+
+func (s *settings) setActive(ctx ui.Context, active int, key bool) {
+	controls := []Setting{
+		s.musicVolume,
+		s.soundVolume,
+		s.virtual,
+		s.keyboard,
+	}
+	for active < 0 {
+		active += len(controls)
+	}
+	if active > 0 {
+		active = active % len(controls)
+	}
+
+	if s.active != active {
+		s.active = active
+		if key {
+			controls[active].(ui.Control).ScrollIntoView(ctx, nil)
+		}
+		s.app.MenuInteraction()
+	}
+
+	for i := range controls {
+		controls[i].SetActive(ctx, i == active)
+	}
+}
+
+var supportedCustomKeys = map[ui.Key]string{
+	ui.KeyA: "A",
+	ui.KeyB: "B",
+	ui.KeyC: "C",
+	ui.KeyD: "D",
+	ui.KeyE: "E",
+	ui.KeyF: "F",
+	ui.KeyG: "G",
+	ui.KeyH: "H",
+	ui.KeyI: "I",
+	ui.KeyJ: "J",
+	ui.KeyK: "K",
+	ui.KeyL: "L",
+	ui.KeyM: "M",
+	ui.KeyN: "N",
+	ui.KeyO: "O",
+	ui.KeyP: "P",
+	ui.KeyQ: "Q",
+	ui.KeyR: "R",
+	ui.KeyS: "S",
+	ui.KeyT: "T",
+	ui.KeyU: "U",
+	ui.KeyV: "V",
+	ui.KeyW: "W",
+	ui.KeyX: "X",
+	ui.KeyY: "Y",
+	ui.KeyZ: "Z",
+}
+
+type toggleControl struct {
+	ui.StackPanel
+
+	handler SettingHandler
+	caption *ui.Label
+	on      *ui.Label
+	changed func(bool)
+
+	Active bool
+	On     bool
+}
+
+func newToggleControl(handler SettingHandler, name string, on bool, changed func(bool)) *toggleControl {
+	center := func(l *ui.Label) { l.TextAlignment = ui.AlignCenter }
+	toggle := &toggleControl{handler: handler, On: on, caption: ui.BuildLabel(name, center), on: ui.BuildLabel("", center), changed: changed}
+	toggle.AddChild(toggle.caption)
+	toggle.AddChild(toggle.on)
+	toggle.updateOn()
+	return toggle
+}
+
+func (c *toggleControl) toggle() {
+	c.On = !c.On
+	c.updateOn()
+	c.handler.Interacted()
+	changed := c.changed
+	if changed != nil {
+		changed(c.On)
+	}
+}
+
+func (c *toggleControl) Handle(ctx ui.Context, e ui.Event) bool {
+	if c.ControlBase.Handle(ctx, e) {
+		return true
+	}
+	switch e := e.(type) {
+	case *ui.MouseMoveEvent:
+		if !c.Active && c.IsOver() {
+			c.Active = true
+			c.handler.Activated(ctx)
+		}
+		if c.IsOver() {
+			ctx.Renderer().SetMouseCursor(ui.MouseCursorPointer)
+		}
+	case *ui.MouseButtonDownEvent:
+		if e.Button == ui.MouseButtonLeft && c.Active && c.IsOver() {
+			c.toggle()
+		}
+	case *ui.KeyDownEvent:
+		if c.Active && e.Key == ui.KeyEnter {
+			c.toggle()
+		}
+	}
+	return false
+}
+
+func (c *toggleControl) IsActive() bool { return c.Active }
+
+func (c *toggleControl) SetActive(ctx ui.Context, active bool) {
+	c.Active = active
+	if active {
+		c.caption.Font.Color = ctx.Style().Palette.Primary
+	} else {
+		c.caption.Font.Color = ctx.Style().Palette.Text
+	}
+}
+
+func (c *toggleControl) updateOn() {
+	if c.On {
+		c.on.Text = "ON"
+	} else {
+		c.on.Text = "OFF"
+	}
+}
+
+type volumeControl struct {
+	ui.ControlBase
+
+	handler SettingHandler
+	texture *TextureMap
+
+	Active        bool
+	overLeftKnob  bool
+	overBar       int
+	overRightKnob bool
+
+	Name          string
+	Volume        float64
+	VolumeChanged func(float64)
+}
+
+func newVolumeControl(handler SettingHandler, texture *TextureMap, name string, volume float64, changed func(float64)) *volumeControl {
+	control := &volumeControl{handler: handler, texture: texture, overBar: -1, Name: name, Volume: volume, VolumeChanged: changed}
+	return control
+}
+
+func (c *volumeControl) changeVolume(delta float64) {
+	c.setVolume(c.Volume + delta)
+}
+
+func (c *volumeControl) DesiredSize(ctx ui.Context, size geom.PointF32) geom.PointF32 {
+	font := ctx.Fonts().Font("default")
+	return geom.PtF32(geom.NaN32(), 2.5*font.Height())
+}
+
+func (c *volumeControl) Handle(ctx ui.Context, e ui.Event) bool {
+	if c.ControlBase.Handle(ctx, e) {
+		return true
+	}
+	switch e := e.(type) {
+	case *ui.KeyDownEvent:
+		switch e.Key {
+		case ui.KeyLeft:
+			if c.Active {
+				c.changeVolume(-1)
+			}
+		case ui.KeyRight:
+			if c.Active {
+				c.changeVolume(1)
+			}
+		}
+	case *ui.MouseMoveEvent:
+		over := c.isOver(ctx, e.Pos())
+		switch over {
+		case -1:
+			c.overLeftKnob = false
+			c.overBar = -1
+			c.overRightKnob = false
+		case 0:
+			if !c.overLeftKnob {
+				c.handler.Interacted()
+			}
+			c.overLeftKnob = true
+			c.overBar = -1
+			c.overRightKnob = false
+		case 11:
+			if !c.overRightKnob {
+				c.handler.Interacted()
+			}
+			c.overLeftKnob = false
+			c.overBar = -1
+			c.overRightKnob = true
+		default:
+			if over-1 != c.overBar {
+				c.handler.Interacted()
+			}
+			c.overLeftKnob = false
+			c.overBar = over - 1
+			c.overRightKnob = false
+		}
+		if over > -1 {
+			ctx.Renderer().SetMouseCursor(ui.MouseCursorPointer)
+		}
+		active := c.Active
+		c.Active = c.IsOver()
+		if !active && c.Active {
+			c.handler.Activated(ctx)
+		}
+	case *ui.MouseButtonDownEvent:
+		if e.Button == ui.MouseButtonLeft {
+			over := c.isOver(ctx, e.Pos())
+			switch over {
+			case -1:
+			case 0:
+				c.changeVolume(-1)
+			case 11:
+				c.changeVolume(1)
+			default:
+				c.setVolume(float64(over + minVolume))
+			}
+		}
+	}
+	return false
+}
+
+func (c *volumeControl) IsActive() bool { return c.Active }
+
+func (c *volumeControl) isOver(ctx ui.Context, p geom.PointF32) int {
+	bounds := c.Bounds()
+	p = p.Sub(c.Offset())
+	font := ctx.Fonts().Font("default")
+
+	top := bounds.Min.Y + 1.5*font.Height()
+	bottom := top + font.Height()
+	if p.Y < top || p.Y >= bottom {
+		return -1
+	}
+
+	scale := tins2021.FindScaleRound(volumeControlTextureHeight, font.Height())
+	knobWidth := scale * volumeControlKnobWidth
+	barWidth := scale * volumeControlBarWidth
+	left := bounds.Center().X - 5*barWidth - knobWidth
+	if p.X < left {
+		return -1
+	}
+
+	widths := []float32{knobWidth, barWidth, barWidth, barWidth, barWidth, barWidth, barWidth, barWidth, barWidth, barWidth, barWidth, knobWidth}
+	for i, w := range widths {
+		right := left + w
+		if p.X < right {
+			return i
+		}
+		left = right
+	}
+	return -1
+}
+
+func (c *volumeControl) Render(ctx ui.Context) {
+	font := ctx.Fonts().Font("default")
+	scale := tins2021.FindScaleRound(volumeControlTextureHeight, font.Height())
+
+	normalColor := ctx.Style().Palette.Text
+	activeColor := ctx.Style().Palette.Primary
+
+	bounds := c.Bounds()
+	center := bounds.Center()
+	renderer := ctx.Renderer()
+	top := bounds.Min.Y
+	fontColor := normalColor
+	if c.Active {
+		fontColor = activeColor
+	}
+	renderer.TextAlign(font, geom.PtF32(center.X, top), fontColor, c.Name, ui.AlignCenter)
+	tint := func(active bool) color.Color {
+		if active {
+			return activeColor
+		}
+		return nil
+	}
+
+	leftKnob, leftKnobRegion := c.texture.Scaled("leftKnob", scale)
+	leftKnobWidth := leftKnobRegion.Dx()
+	bar, barRegion := c.texture.Scaled("bar", scale)
+	barFilled, barFilledRegion := c.texture.Scaled("barFilled", scale)
+	barWidth := barRegion.Dx()
+	rightKnob, rightKnobRegion := c.texture.Scaled("rightKnob", scale)
+	left := center.X - 5*barWidth - leftKnobWidth
+	top += 1.5 * font.Height()
+	ctx.Renderer().DrawTexturePointOptions(leftKnob, geom.PtF32(left, top), ui.DrawOptions{Source: &leftKnobRegion, Tint: tint(c.overLeftKnob)})
+	left += leftKnobWidth
+	for i := 0; i < 10; i++ {
+		volume := float64(i + minVolume + 1)
+		if volume <= c.Volume {
+			ctx.Renderer().DrawTexturePointOptions(barFilled, geom.PtF32(left, top), ui.DrawOptions{Source: &barFilledRegion, Tint: tint(i == c.overBar)})
+		} else {
+			ctx.Renderer().DrawTexturePointOptions(bar, geom.PtF32(left, top), ui.DrawOptions{Source: &barRegion, Tint: tint(i == c.overBar)})
+		}
+		left += barWidth
+	}
+	ctx.Renderer().DrawTexturePointOptions(rightKnob, geom.PtF32(left, top), ui.DrawOptions{Source: &rightKnobRegion, Tint: tint(c.overRightKnob)})
+}
+
+func (c *volumeControl) SetActive(_ ui.Context, active bool) { c.Active = active }
+
+func (c *volumeControl) setVolume(volume float64) {
+	volume = geom.Min(maxVolume, geom.Max(minVolume, volume))
+	if c.Volume == volume {
+		return
+	}
+	c.Volume = volume
+	c.VolumeChanged(c.Volume)
+	c.handler.Interacted()
+}

cmd/tins2021/texturegenerator.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"image"
+
+	"opslag.de/schobers/tins2021"
+)
+
+type textureGenerator struct{}
+
+func (textureGenerator) Star() image.Image {
+	return tins2021.AnimatePolygon(tins2021.CreateStar(5), tins2021.Yellow, defaultAnimationFrames, tins2021.MeshRotateAnimation{})
+}
+
+func (textureGenerator) Heart() image.Image {
+	return tins2021.AnimatePolygon(tins2021.CreateHeart(), tins2021.Red, defaultAnimationFrames, tins2021.MeshRotateAnimation{})
+}
+
+func (g textureGenerator) MonsterTypeColor(typ tins2021.MonsterType) string {
+	switch typ {
+	case tins2021.MonsterTypeStraight:
+		return tins2021.Green
+	case tins2021.MonsterTypeRandom:
+		return tins2021.Blue
+	case tins2021.MonsterTypeChaser:
+		return tins2021.Purple
+	default:
+		panic("monster does not have a color")
+	}
+}
+
+func (g textureGenerator) Monster(typ tins2021.MonsterType) func() image.Image {
+	color := g.MonsterTypeColor(typ)
+	return func() image.Image {
+		return tins2021.AnimatePolygon(tins2021.CreateHexagon(), color, defaultAnimationFrames, tins2021.MeshWobbleTransformation{Wobble: 30})
+	}
+}
+
+func (g textureGenerator) DyingMonster(typ tins2021.MonsterType) func() image.Image {
+	color := g.MonsterTypeColor(typ)
+	return func() image.Image {
+		return tins2021.Animate(color, defaultAnimationFrames, &tins2021.ExplodingHexagonAnimation{})
+	}
+}

cmd/tins2021/texturemap.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"image"
+
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/tins2021"
+	"opslag.de/schobers/zntg/ui"
+)
+
+type TextureMap struct {
+	texture tins2021.NamedTexture
+	regions map[string]geom.RectangleF32
+}
+
+func newTextureMapFromImage(textures *ui.Textures, name string, im image.Image, regions map[string]geom.RectangleF) *TextureMap {
+	texture, err := tins2021.CreateNamedTextureImage(textures, name, im)
+	if err != nil {
+		panic(err)
+	}
+	regionMap := map[string]geom.RectangleF32{}
+	for name, region := range regions {
+		regionMap[name] = region.ToF32()
+	}
+	return &TextureMap{
+		texture: texture,
+		regions: regionMap,
+	}
+}
+
+func generateTextureMapFromImage(textures *ui.Textures, name string, generate func() (image.Image, map[string]geom.RectangleF)) *TextureMap {
+	im, regions := generate()
+	return newTextureMapFromImage(textures, name, im, regions)
+}
+
+func (m *TextureMap) Texture(name string) (ui.Texture, geom.RectangleF32) {
+	return m.texture.Texture(), m.regions[name]
+}
+
+func (m *TextureMap) Scaled(name string, scale float32) (ui.Texture, geom.RectangleF32) {
+	return m.texture.Scaled(scale), geom.RectangleF32{Min: m.regions[name].Min.Mul(scale), Max: m.regions[name].Max.Mul(scale)}
+}

cmd/tins2021/textures.go

@@ -1,48 +1,28 @@
 package main
 
 import (
+	"fmt"
 	"image"
 	"image/png"
+	"log"
 	"os"
+	"path/filepath"
+	"time"
 
 	"opslag.de/schobers/tins2021"
 	"opslag.de/schobers/zntg/ui"
 )
 
-type namedTexture struct {
-	ui.Texture
-
-	Name string
+func chrono(action func()) time.Duration {
+	start := time.Now()
+	action()
+	return time.Now().Sub(start)
 }
 
-func newNamedTexture(textures *ui.Textures, name string, im image.Image) namedTexture {
-	texture, err := textures.CreateTextureGo(name, im, true)
-	if err != nil {
-		panic(err)
-	}
-	return namedTexture{texture, name}
-}
-
-func (t namedTexture) Scaled(textures *ui.Textures, scale float32) namedTexture {
-	return namedTexture{textures.ScaledByName(t.Name, scale), t.Name}
-}
-
-type cubeTexture struct {
-	Normal, Inversed namedTexture
-}
-
-func newCubeTexture(textures *ui.Textures, color string) cubeTexture {
-	return cubeTexture{
-		Normal:   newNamedTexture(textures, "cube_"+color, tins2021.GenerateCube(color)),
-		Inversed: newNamedTexture(textures, "cube_"+color+"_inversed", tins2021.GenerateHole(color)),
-	}
-}
-
-func (t cubeTexture) Scaled(textures *ui.Textures, scale float32) cubeTexture {
-	return cubeTexture{
-		Normal:   t.Normal.Scaled(textures, scale),
-		Inversed: t.Inversed.Scaled(textures, scale),
-	}
+func chronoErr(action func() error) (time.Duration, error) {
+	start := time.Now()
+	err := action()
+	return time.Now().Sub(start), err
 }
 
 func loadTextureImage(ctx ui.Context, resource string) image.Image {
@@ -58,26 +38,29 @@ func loadTextureImage(ctx ui.Context, resource string) image.Image {
 	return im
 }
 
-func saveTextureImage(resource string, im image.Image) {
+func newAnimatedTexture(ctx ui.Context, name string, frames int, render func() image.Image) tins2021.AnimatedTexture {
+	resourceName := fmt.Sprintf("resources/textures/%s.png", name)
+	raw := loadTextureImage(ctx, resourceName)
+	if raw == nil {
+		renderTime := chrono(func() {
+			raw = render()
+		})
+		if err := saveTextureImage(resourceName, raw); err != nil {
+			log.Printf("failed to write animated texture \"%s\" to disk (%s); error: %v\n", name, resourceName, err)
+		} else {
+			log.Printf("generated animated texture \"%s\" in %v (and saved to disk \"%s\")\n", name, renderTime, resourceName)
+		}
+	}
+	texture := tins2021.MustCreateNamedTextureImage(ctx.Textures(), name, raw)
+	return tins2021.NewAnimatedTexture(texture, frames)
+}
+
+func saveTextureImage(resource string, im image.Image) error {
+	os.MkdirAll(filepath.Dir(resource), 0744)
 	out, err := os.Create(resource)
 	if err != nil {
-		return
+		return err
 	}
 	defer out.Close()
-	png.Encode(out, im)
+	return png.Encode(out, im)
 }
-
-func newAnimatedTexture(ctx ui.Context, name, resource string, render animatedTextureRenderFn) tins2021.AnimatedTexture {
-	raw := loadTextureImage(ctx, resource)
-	if raw == nil {
-		raw = render()
-		saveTextureImage(resource, raw)
-	}
-	texture, err := ctx.Textures().CreateTextureGo(name, raw, true)
-	if err != nil {
-		panic(err)
-	}
-	return tins2021.NewSquareAnimatedTexture(texture)
-}
-
-type animatedTextureRenderFn func() image.Image

cmd/tins2021/tins2021.go

@@ -1,23 +1,20 @@
 package main
 
 import (
+	"embed"
 	"flag"
 	"image/color"
 	"log"
 
-	rice "github.com/GeertJohan/go.rice"
 	"opslag.de/schobers/geom"
 	"opslag.de/schobers/tins2021"
 	"opslag.de/schobers/zntg"
-	"opslag.de/schobers/zntg/addons/riceres"
+	"opslag.de/schobers/zntg/addons/embedres"
 	"opslag.de/schobers/zntg/ui"
 )
 
-// #cgo windows LDFLAGS: -Wl,-subsystem,windows
-import "C"
-
-//go:generate go get -u github.com/GeertJohan/go.rice/rice
-//go:generate rice embed
+//go:embed resources
+var resources embed.FS
 
 func main() {
 	err := run()
@@ -27,20 +24,25 @@ func main() {
 }
 
 func openResources() ui.Resources {
-	box := rice.MustFindBox(`resources`)
-	embedded := riceres.New(box)
-	return ui.NewFallbackResources(ui.NewPathResources(nil, box.Name()), embedded)
+	embedded := embedres.New(resources)
+	return ui.NewFallbackResources(ui.NewPathResources(nil, `resources`), embedded)
 }
 
 func run() error {
+	var background string
 	var extract bool
-	flag.BoolVar(&extract, "extract-resources", false, "extracts all resources to the current working directory")
+	flag.StringVar(&background, "background", "", "generates a background")
+	flag.BoolVar(&extract, "extract", false, "extracts all resources to the current working directory")
 	flag.Parse()
 
 	if extract {
-		return copyBoxToDisk()
+		return copyBoxToDisk(resources)
 	}
+
 	res := openResources()
+	if background != "" {
+		return GenerateBackground(res, background)
+	}
 
 	ptPtr := func(x, y int) *geom.Point {
 		p := geom.Pt(x, y)
@@ -54,6 +56,11 @@ func run() error {
 	}
 	defer settings.Store()
 
+	score, err := tins2021.LoadScores()
+	if err != nil {
+		log.Printf("unable to load score; error: %v", err)
+	}
+
 	var location *geom.PointF32
 	if settings.Window.Location != nil {
 		location = &geom.PointF32{X: float32(settings.Window.Location.X), Y: float32(settings.Window.Location.Y)}
@@ -78,7 +85,10 @@ func run() error {
 
 	app := &app{
 		settings: settings,
+		score:    &score,
 	}
+	defer tins2021.SaveScores(app.score)
+
 	style := ui.DefaultStyle()
 	style.Palette = &ui.Palette{
 		Background:      zntg.MustHexColor(`#494949`),

cmd/tins2021/tins2021_console.go

@@ -0,0 +1,4 @@
+package main
+
+// #cgo windows,!console LDFLAGS: -Wl,-subsystem,windows
+import "C"

cmd/tins2021/virtualcontrols.go

@@ -0,0 +1,238 @@
+package main
+
+import (
+	"fmt"
+	"image"
+	"image/color"
+
+	"github.com/llgcode/draw2d"
+	"github.com/llgcode/draw2d/draw2dimg"
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/geom/ints"
+	"opslag.de/schobers/tins2021"
+	"opslag.de/schobers/zntg/ui"
+)
+
+func drawArrowKey(a float64) image.Image {
+	a = -a
+	const keyHeight_5 = .5 * tins2021.TextureSize
+	const keyWidth_5 = .5 * tins2021.TextureSize
+
+	im := image.NewRGBA(image.Rect(0, 0, tins2021.TextureSize, tins2021.TextureSize))
+	ctx := draw2dimg.NewGraphicContext(im)
+	center := geom.PtF(keyWidth_5, keyHeight_5)
+	drawKeyOutline(ctx, center, geom.PtF(.95*tins2021.TextureSize, .76*tins2021.TextureSize), 0, color.White)
+	point := center.Add(tins2021.Polar(a, .25*tins2021.TextureSize))
+	back := center.Add(tins2021.Polar(a+geom.Pi, .25*tins2021.TextureSize))
+
+	ctx.SetLineWidth(3)
+	ctx.SetStrokeColor(color.White)
+	ctx.SetLineCap(draw2d.RoundCap)
+
+	ctx.MoveTo(back.XY())
+	ctx.LineTo(point.XY())
+	ctx.LineTo(point.Add(tins2021.Polar(a+.75*geom.Pi, .25*tins2021.TextureSize)).XY())
+	ctx.Stroke()
+	ctx.MoveTo(point.XY())
+	ctx.LineTo(point.Add(tins2021.Polar(a-.75*geom.Pi, .25*tins2021.TextureSize)).XY())
+	ctx.Stroke()
+
+	return im
+}
+
+func drawReturnKey() image.Image {
+	const keyHeight_5 = .5 * tins2021.TextureSize
+	const keyWidth_5 = .5 * tins2021.TextureSize
+
+	im := image.NewRGBA(image.Rect(0, 0, tins2021.TextureSize, tins2021.TextureSize))
+	ctx := draw2dimg.NewGraphicContext(im)
+	drawKeyOutline(ctx, geom.PtF(keyWidth_5, keyHeight_5), geom.PtF(.95*tins2021.TextureSize, .76*tins2021.TextureSize), 0, color.White)
+
+	unity := func(f float64) float64 { return f * tins2021.TextureSize }
+
+	ctx.SetLineWidth(3)
+	ctx.SetStrokeColor(color.White)
+	ctx.SetLineCap(draw2d.RoundCap)
+
+	ctx.MoveTo(unity(.75), unity(.3))
+	ctx.LineTo(unity(.75), unity(.55))
+	ctx.LineTo(unity(.25), unity(.55))
+	ctx.LineTo(unity(.4), unity(.7))
+	ctx.Stroke()
+	ctx.MoveTo(unity(.25), unity(.55))
+	ctx.LineTo(unity(.4), unity(.4))
+	ctx.Stroke()
+
+	return im
+}
+
+type VirtualControls struct {
+	ui.Proxy
+
+	bounds geom.RectangleF32
+
+	Enabled             bool
+	Keys                map[string]VirtualKey
+	TopLeftControls     []string
+	TopRightControls    []string
+	BottomRightControls []string
+	BottomLeftControls  []string
+}
+
+func NewVirtualControls(content ui.Control) *VirtualControls {
+	return &VirtualControls{
+		Proxy: ui.Proxy{Content: content},
+		Keys:  map[string]VirtualKey{},
+	}
+}
+
+func (c *VirtualControls) allKeys() map[string]geom.RectangleF32 {
+	bounds := c.bounds
+	size, _, margin := c.lengths()
+
+	keySize := geom.PtF32(size, size)
+	keys := map[string]geom.RectangleF32{}
+	left := float32(margin)
+	top := bounds.Min.Y
+	for _, name := range c.TopLeftControls {
+		keys[name] = geom.PtF32(left, top).RectRel(keySize)
+		top += size + margin
+	}
+
+	left = bounds.Max.X - size - margin
+	top = bounds.Min.Y
+	for _, name := range c.TopRightControls {
+		keys[name] = geom.PtF32(left, top).RectRel(keySize)
+		top += size + margin
+	}
+
+	left = float32(margin)
+	top = bounds.Max.Y - size
+	for _, name := range c.BottomLeftControls {
+		keys[name] = geom.PtF32(left, top).RectRel(keySize)
+		top -= size + margin
+	}
+
+	left = bounds.Max.X - size - margin
+	top = bounds.Max.Y - size
+	for _, name := range c.BottomRightControls {
+		keys[name] = geom.PtF32(left, top).RectRel(keySize)
+		top -= size + margin
+	}
+	return keys
+}
+
+func (c *VirtualControls) Arrange(ctx ui.Context, bounds geom.RectangleF32, offset geom.PointF32, parent ui.Control) {
+	c.bounds = bounds
+	if c.Enabled {
+		virtualControlSize, _ := c.desiredVirtualControlSize(bounds.Size())
+		bounds.Min.X += virtualControlSize
+		bounds.Max.X -= virtualControlSize
+		if bounds.Max.X < bounds.Min.X {
+			center := .5 * (bounds.Min.X + bounds.Max.X)
+			bounds.Min.X = center
+			bounds.Max.X = center
+		}
+	}
+	c.Content.Arrange(ctx, bounds, offset, parent)
+}
+
+func (c *VirtualControls) desiredVirtualControlSize(size geom.PointF32) (float32, int) {
+	if size.X > 2*size.Y {
+		return size.Y / 5, 2
+	}
+	return size.Y / 7, 3
+}
+
+func (c *VirtualControls) DesiredSize(ctx ui.Context, size geom.PointF32) geom.PointF32 {
+	desired := c.Content.DesiredSize(ctx, size)
+	if geom.IsNaN32(desired.X) {
+		return desired
+	}
+	if c.Enabled {
+		virtualControlSize, rows := c.desiredVirtualControlSize(size)
+		columns := ints.Max(len(c.TopLeftControls)+rows-1/rows, len(c.BottomLeftControls)+rows-1/rows) + ints.Max(len(c.TopRightControls)+rows-1/rows, len(c.BottomRightControls)+rows-1/rows)
+		fmt.Println(columns)
+		desired.X = geom.Min32(desired.X+float32(columns)*virtualControlSize, size.X)
+	}
+	return desired
+}
+
+func (c *VirtualControls) Handle(ctx ui.Context, e ui.Event) bool {
+	if c.Enabled {
+		switch e := e.(type) {
+		case *ui.MouseMoveEvent:
+			pos := e.Pos()
+			for _, bounds := range c.allKeys() {
+				if pos.In(bounds) {
+					ctx.Renderer().SetMouseCursor(ui.MouseCursorPointer)
+					break
+				}
+			}
+		case *ui.MouseButtonDownEvent:
+			if e.Button == ui.MouseButtonLeft {
+				pos := e.Pos()
+				for name, bounds := range c.allKeys() {
+					if pos.In(bounds) {
+						key := c.Keys[name]
+						c.Content.Handle(ctx, &ui.KeyDownEvent{
+							EventBase: ui.EventBase{StampInSeconds: e.StampInSeconds},
+							Key:       key.Key,
+						})
+						break
+					}
+				}
+			}
+		}
+	}
+	return c.Content.Handle(ctx, e)
+}
+
+func (c *VirtualControls) lengths() (size, scale, margin float32) {
+	bounds := c.bounds
+	margin = 8
+	size, _ = c.desiredVirtualControlSize(bounds.Size())
+	size -= margin
+	scale = tins2021.FindScaleRound(tins2021.TextureSize, size)
+	return
+}
+
+func (c *VirtualControls) RegisterKey(id string, key ui.Key, symbol tins2021.NamedTexture) {
+	c.Keys[id] = VirtualKey{Key: key, Symbol: symbol}
+}
+
+func (c *VirtualControls) Render(ctx ui.Context) {
+	c.Content.Render(ctx)
+
+	if c.Enabled {
+		_, scale, _ := c.lengths()
+
+		mouse := ctx.MousePosition()
+		normalColor := ctx.Style().Palette.Text
+		overColor := ctx.Style().Palette.Primary
+
+		renderer := ctx.Renderer()
+
+		for name, keyBounds := range c.allKeys() {
+			key := c.Keys[name]
+			texture := key.Symbol.Scaled(scale)
+			color := normalColor
+			if mouse.In(keyBounds) {
+				color = overColor
+			}
+			renderer.DrawTexturePointOptions(texture, keyBounds.Min, ui.DrawOptions{Tint: color})
+		}
+	}
+}
+
+func (c *VirtualControls) SetControls(topLeft, topRight, bottomRight, bottomLeft []string) {
+	c.TopLeftControls = topLeft
+	c.TopRightControls = topRight
+	c.BottomRightControls = bottomRight
+	c.BottomLeftControls = bottomLeft
+}
+
+type VirtualKey struct {
+	Symbol tins2021.NamedTexture
+	Key    ui.Key
+}

io.go

@@ -1,11 +1,43 @@
 package tins2021
 
 import (
+	"encoding/json"
+	"os"
+
 	"opslag.de/schobers/zntg"
 )
 
 const appName = "tins2021_qbitter"
 
-func UserDir() (string, error) { return zntg.UserDir(appName) }
+func UserDir() (string, error) { return zntg.UserConfigDir(appName) }
 
-func UserFile(name string) (string, error) { return zntg.UserFile(appName, name) }
+func UserFile(name string) (string, error) { return zntg.UserConfigFile(appName, name) }
+
+func LoadUserFileJSON(name string, v interface{}) error {
+	path, err := UserFile(name)
+	if err != nil {
+		return err
+	}
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		return os.ErrNotExist
+	}
+	f, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	return json.NewDecoder(f).Decode(v)
+}
+
+func SaveUserFileJSON(name string, v interface{}) error {
+	path, err := UserFile(name)
+	if err != nil {
+		return err
+	}
+	f, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	return json.NewEncoder(f).Encode(v)
+}

level.go

@@ -92,10 +92,15 @@ func (l *Level) MoveMonster(target, source geom.Point) {
 	l.DestroyMonster(source)
 }
 
-func (l *Level) MovePlayer(dir Direction) bool {
+type MonsterHit struct {
+	Position geom.Point
+	Type     MonsterType
+}
+
+func (l *Level) MovePlayer(dir Direction) (bool, *MonsterHit) {
 	towards, allowed := l.CanPlayerMove(dir)
 	if !allowed {
-		return false
+		return false, nil
 	}
 	l.Player = towards
 	tile := l.Tiles[towards]
@@ -109,13 +114,18 @@ func (l *Level) MovePlayer(dir Direction) bool {
 		tile.Star = false
 		l.Score += 25
 	}
+	var hit *MonsterHit
 	if l.Monsters[towards] != nil {
+		hit = &MonsterHit{
+			Position: towards,
+			Type:     l.Monsters[towards].Type(),
+		}
 		l.DecrementLive()
 		l.DestroyMonster(towards)
 		l.Score -= 5
 	}
 	l.Score -= 1 // for every move
-	return true
+	return true, hit
 }
 
 func (l *Level) Randomize(difficulty int, stars int) {
@@ -170,7 +180,7 @@ func (l *Level) Randomize(difficulty int, stars int) {
 		l.Tiles[pos].Star = true
 		stars--
 	}
-	hearts := 1 + (100-difficulty)/50 // [3..1] (only difficulty has 3 hearts)
+	hearts := rand.Intn(2 + (100-difficulty)/50) // [3..1] (only difficulty 0 has 3 hearts)
 	for hearts > 0 {
 		pos := pick(difficulty)
 		if l.Tiles[pos].Occupied() {
@@ -179,9 +189,9 @@ func (l *Level) Randomize(difficulty int, stars int) {
 		l.Tiles[pos].Heart = true
 		hearts--
 	}
-	monsters := 2 + (8 * difficulty / 100)
-	minRandomMonster := (100-difficulty)*80/100 + 10 // [90..10]
-	minChaserMonster := (100-difficulty)*50/100 + 50 // [100..50]
+	monsters := 5 + (25 * difficulty / 100)
+	minRandomMonster := (100-difficulty)*60/100 + 10 // [70..10]
+	minChaserMonster := (100-difficulty)*70/100 + 25 // [95..25]
 	for monsters > 0 {
 		pos := pick(100 - difficulty)
 		curr := l.Monsters[pos]

math.go

@@ -0,0 +1,15 @@
+package tins2021
+
+import "opslag.de/schobers/geom"
+
+func Polar(a, r float64) geom.PointF {
+	return geom.PtF(r*geom.Cos(a), r*geom.Sin(a))
+}
+
+func PolarUnity(a float64) geom.PointF {
+	return geom.PtF(geom.Cos(a), geom.Sin(a))
+}
+
+func Percentage(i, n int) float64 {
+	return float64(i) / float64(n)
+}

meshanimation.go

@@ -0,0 +1,265 @@
+package tins2021
+
+import (
+	"fmt"
+	"image"
+	"os"
+	"runtime"
+	"sync"
+
+	"github.com/fogleman/fauxgl"
+	"github.com/nfnt/resize"
+	"golang.org/x/image/draw"
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/geom/ints"
+	"opslag.de/schobers/zntg/ui"
+)
+
+const (
+	fovy = 40 // vertical field of view in degrees
+	near = 1  // near clipping plane
+	far  = 10 // far clipping plane
+)
+
+var (
+	eye    = fauxgl.V(0, 0, 4)                // camera position
+	center = fauxgl.V(0, 0, 0)                // view center position
+	up     = fauxgl.V(0, 1, 0)                // up vector
+	light  = fauxgl.V(.5, 1, .75).Normalize() // light direction
+)
+
+func Animate(hexColor string, frames int, animator MeshAnimator) image.Image {
+	const scale = 4
+	const s = 1.1
+
+	matrix := fauxgl.Orthographic(-s, s, -s, s, near, far).Mul(fauxgl.LookAt(eye, center, up))
+	animation := image.NewNRGBA(image.Rect(0, 0, TextureSize*frames, TextureSize))
+
+	threads := ints.Max(1, runtime.NumCPU())
+	framesC := make(chan int, threads)
+
+	wait := parallel(1, func() {
+		context := fauxgl.NewContext(TextureSize*scale, TextureSize*scale)
+		color := fauxgl.HexColor(hexColor)
+
+		for i := range framesC {
+			context.ClearDepthBuffer()
+			context.ClearColorBufferWith(fauxgl.Transparent)
+
+			shader := fauxgl.NewPhongShader(matrix, light, eye)
+			shader.ObjectColor = color
+			shader.AmbientColor = fauxgl.MakeColor(mustHexColor(`#7F7F7F`))
+			context.Shader = shader
+
+			mesh := animator.animate(FrameState{Current: i, TotalFrames: frames})
+			context.DrawMesh(mesh)
+
+			frame := resize.Resize(TextureSize, TextureSize, context.Image(), resize.Bilinear)
+			draw.Copy(animation, image.Pt(i*TextureSize, 0), frame, frame.Bounds(), draw.Src, nil)
+		}
+	})
+
+	for f := 0; f < frames; f++ {
+		framesC <- f
+	}
+	close(framesC)
+	wait.Wait()
+	return animation
+}
+
+func AnimatePolygon(polygon geom.PolygonF, hexColor string, frames int, transformer MeshTransformer) image.Image {
+	animation := newMeshAnimation(generateMeshFromPolygon(polygon, .2), transformer)
+	return Animate(hexColor, frames, animation)
+}
+
+func AnimateSTL(resources ui.PhysicalResources, name, hexColor string, frames int, transformer MeshTransformer) image.Image {
+	path, err := resources.FetchResource(name)
+	if err != nil {
+		panic(err)
+	}
+	mesh, err := fauxgl.LoadSTL(path)
+	if err != nil {
+		panic(err)
+	}
+	return Animate(hexColor, frames, newMeshAnimation(mesh, transformer))
+}
+
+type ExplodingHexagonAnimation struct {
+	Biunit fauxgl.Matrix
+}
+
+func rotateMeshAround(mesh *fauxgl.Mesh, around fauxgl.Vector, angle float64) {
+	mesh.Transform(fauxgl.Translate(fauxgl.V(-around.X, -around.Y, -around.Z)))
+	mesh.Transform(fauxgl.Rotate(fauxgl.V(0, 1, 0), angle))
+	mesh.Transform(fauxgl.Translate(around))
+}
+
+func (a *ExplodingHexagonAnimation) animate(s FrameState) *fauxgl.Mesh {
+	ani := s.Animation()
+
+	mesh := fauxgl.NewEmptyMesh()
+	const parts = 6
+
+	const oneThird = float64(1) / 3
+	const twoThirds = float64(2) / 3
+	const da = twoThirds * geom.Pi
+	partHeight := geom.Sqrt(3) / 2
+	for part := 0; part < parts; part++ {
+		a := 2 * geom.Pi * float64(part) / float64(parts)
+
+		closeLength := (float64(.25) + .75*(1-ani))
+
+		center := Polar(a, twoThirds*partHeight)
+		aa := a + ani*geom.Pi
+		far := center.Add(Polar(aa, oneThird*partHeight))
+		farWidth := float64(.5) * (1 - ani)
+		right := far.Add(Polar(aa-.5*geom.Pi, farWidth))
+		left := far.Add(Polar(aa+.5*geom.Pi, farWidth))
+		close := center.Add(Polar(aa+geom.Pi, closeLength*twoThirds*partHeight))
+
+		partMesh := generateMeshFromPolygon(geom.PolF(right, left, close), .2)
+		rotateMeshAround(partMesh, fauxgl.V(-center.X, -center.Y, 0), ani*geom.Pi)
+		mesh.Add(partMesh)
+	}
+
+	if s.Current == 0 {
+		a.Biunit = mesh.BiUnitCube()
+	} else {
+		mesh.Transform(a.Biunit)
+	}
+	return mesh
+}
+
+type FrameState struct {
+	Current     int
+	TotalFrames int
+}
+
+func (s FrameState) Animation() float64 { return float64(s.Current) / float64(s.TotalFrames) }
+
+func generateTrianglesForPolygon(polygon geom.PolygonF, thickness float64) []*fauxgl.Triangle {
+	vec := func(p geom.PointF, z float64) fauxgl.Vector { return fauxgl.V(p.X, p.Y, z) }
+	tri := fauxgl.NewTriangleForPoints
+	face := func(q, r, s geom.PointF, n float64) *fauxgl.Triangle {
+		return tri(vec(q, n*thickness), vec(r, n*thickness), vec(s, n*thickness))
+	}
+	var triangles []*fauxgl.Triangle
+	// generate front & back
+	for _, t := range polygon.Triangulate() {
+		triangles = append(triangles,
+			face(t.Points[0], t.Points[1], t.Points[2], 1),  // front
+			face(t.Points[2], t.Points[1], t.Points[0], -1), // back
+		)
+	}
+	// generate side
+	back, front := -thickness, thickness
+	for i, p := range polygon.Points {
+		next := polygon.Points[(i+1)%len(polygon.Points)]
+		q, r, s, t := vec(p, back), vec(next, back), vec(next, front), vec(p, front)
+		triangles = append(triangles, tri(q, r, s), tri(q, s, t))
+	}
+	return triangles
+}
+
+func generateMeshFromPolygon(polygon geom.PolygonF, thickness float64) *fauxgl.Mesh {
+	triangles := generateTrianglesForPolygon(polygon, thickness)
+	mesh := fauxgl.NewTriangleMesh(triangles)
+	return mesh
+}
+
+func iterate(n int, threads int) <-chan int {
+	iterator := make(chan int, threads)
+	go func() {
+		for i := 0; i < n; i++ {
+			iterator <- i
+		}
+	}()
+	return iterator
+}
+
+type MeshAnimation struct {
+	MeshTransformer
+
+	mesh *fauxgl.Mesh
+}
+
+func newMeshAnimation(mesh *fauxgl.Mesh, transformer MeshTransformer) *MeshAnimation {
+	mesh.BiUnitCube()
+	return &MeshAnimation{transformer, mesh}
+}
+
+func (a *MeshAnimation) animate(s FrameState) *fauxgl.Mesh {
+	mesh := a.mesh.Copy()
+	a.MeshTransformer.transform(mesh, s)
+	return mesh
+}
+
+type MeshAnimator interface {
+	animate(FrameState) *fauxgl.Mesh
+}
+
+type MeshRotateAnimation struct{}
+
+func (MeshRotateAnimation) transform(mesh *fauxgl.Mesh, s FrameState) {
+	mesh.Transform(fauxgl.Rotate(up, 2*geom.Pi*s.Animation()))
+}
+
+type MeshTransformer interface {
+	transform(*fauxgl.Mesh, FrameState)
+}
+
+type MeshWobbleTransformation struct {
+	Wobble float64
+}
+
+func (a MeshWobbleTransformation) wobble(s FrameState) float64 {
+	animation := float64(s.Current) / float64(s.TotalFrames)
+	animation += .25
+	if animation >= 1 {
+		animation -= 1
+	}
+	return geom.Abs(animation*4-2) - 1
+}
+
+func (a MeshWobbleTransformation) transform(mesh *fauxgl.Mesh, s FrameState) {
+	mesh.Transform(fauxgl.Rotate(up, a.wobble(s)*a.Wobble*geom.Pi/180))
+}
+
+func parallel(n int, action func()) *sync.WaitGroup {
+	wait := &sync.WaitGroup{}
+	wait.Add(n)
+	for i := 0; i < n; i++ {
+		go func() {
+			action()
+			wait.Done()
+		}()
+	}
+	return wait
+}
+
+func saveMeshSTL(path, name string, mesh *fauxgl.Mesh) error {
+	stl, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer stl.Close()
+
+	fmt.Fprintf(stl, "solid %s\n", name)
+	for _, triangle := range mesh.Triangles {
+		normal := triangle.Normal()
+		fmt.Fprintf(stl, "  facet normal %f, %f, %f\n", normal.X, normal.Y, normal.Z)
+		fmt.Fprintf(stl, "   outer loop\n")
+		fmt.Fprintf(stl, "    vertex %f, %f, %f\n", triangle.V1.Position.X, triangle.V1.Position.Y, triangle.V1.Position.Z)
+		fmt.Fprintf(stl, "    vertex %f, %f, %f\n", triangle.V2.Position.X, triangle.V2.Position.Y, triangle.V2.Position.Z)
+		fmt.Fprintf(stl, "    vertex %f, %f, %f\n", triangle.V3.Position.X, triangle.V3.Position.Y, triangle.V3.Position.Z)
+		fmt.Fprintf(stl, "   endloop\n")
+		fmt.Fprintf(stl, "  endfacet\n")
+	}
+	fmt.Fprintf(stl, "endsolid %s\n", name)
+	return nil
+}
+
+func SaveSTLFromPolygon(path, name string, polygon geom.PolygonF, thickness float64) {
+	mesh := generateMeshFromPolygon(polygon, thickness)
+	saveMeshSTL(path, name, mesh)
+}

monsters.go

@@ -4,6 +4,8 @@ import (
 	"opslag.de/schobers/geom"
 )
 
+var AllMonsterTypes = []MonsterType{MonsterTypeStraight, MonsterTypeRandom, MonsterTypeChaser}
+
 type ChasingMonster struct{}
 
 func (m ChasingMonster) Type() MonsterType { return MonsterTypeChaser }

namedtexture.go

@@ -0,0 +1,39 @@
+package tins2021
+
+import (
+	"image"
+
+	"opslag.de/schobers/zntg/ui"
+)
+
+type NamedTexture struct {
+	textures *ui.Textures
+	name     string
+}
+
+func NewNamedTexture(textures *ui.Textures, name string) NamedTexture {
+	return NamedTexture{
+		textures: textures,
+		name:     name,
+	}
+}
+
+func CreateNamedTextureImage(textures *ui.Textures, name string, im image.Image) (NamedTexture, error) {
+	_, err := textures.CreateTextureGo(name, im, true)
+	if err != nil {
+		return NamedTexture{}, err
+	}
+	return NewNamedTexture(textures, name), nil
+}
+
+func MustCreateNamedTextureImage(textures *ui.Textures, name string, im image.Image) NamedTexture {
+	texture, err := CreateNamedTextureImage(textures, name, im)
+	if err != nil {
+		panic(err)
+	}
+	return texture
+}
+
+func (t NamedTexture) Scaled(scale float32) ui.Texture { return t.textures.ScaledByName(t.name, scale) }
+
+func (t NamedTexture) Texture() ui.Texture { return t.textures.Texture(t.name) }

polygons.go

@@ -13,7 +13,7 @@ func CreateHeart() geom.PolygonF {
 	var polygon geom.PolygonF
 	const segments = 100
 	for segment := 0; segment < 100; segment++ {
-		t := 2 * geom.Pi * float64(segment) / segments
+		t := 2 * geom.Pi * Percentage(segment, segments)
 		st := geom.Sin(t)
 		polygon.Points = append(polygon.Points, geom.PtF(
 			16*st*st*st,
@@ -23,15 +23,15 @@ func CreateHeart() geom.PolygonF {
 }
 
 func CreateHexagon() geom.PolygonF {
-	var polygon geom.PolygonF
-	pt := func(rotation float64) geom.PointF {
-		a := .5*geom.Pi + 2*geom.Pi*rotation
-		return geom.PtF(geom.Cos(a), geom.Sin(a))
-	}
 	const sides = 6
-	for side := 0; side < 6; side++ {
+	return CreateRegularPolygon(6)
+}
+
+func CreateRegularPolygon(sides int) geom.PolygonF {
+	var polygon geom.PolygonF
+	for side := 0; side < sides; side++ {
 		polygon.Points = append(polygon.Points,
-			pt(float64(side)/float64(sides)),
+			PolarUnity(float64(side)/float64(sides)),
 		)
 	}
 	return polygon
@@ -39,14 +39,10 @@ func CreateHexagon() geom.PolygonF {
 
 func CreateStar(sides int) geom.PolygonF {
 	var polygon geom.PolygonF
-	pt := func(rotation float64) geom.PointF {
-		a := .5*geom.Pi + 2*geom.Pi*rotation
-		return geom.PtF(geom.Cos(a), geom.Sin(a))
-	}
 	for side := 0; side < sides; side++ {
 		polygon.Points = append(polygon.Points,
-			pt(float64(side)/float64(sides)),
-			pt((float64(side)+0.5)/float64(sides)).Mul(.5),
+			PolarUnity(float64(side)/float64(sides)),
+			PolarUnity((float64(side)+0.5)/float64(sides)).Mul(.5),
 		)
 	}
 	return polygon

rendereranimation.go

@@ -1,211 +0,0 @@
-package tins2021
-
-import (
-	"fmt"
-	"image"
-	"os"
-
-	"github.com/fogleman/fauxgl"
-	"github.com/nfnt/resize"
-	"golang.org/x/image/draw"
-	"opslag.de/schobers/geom"
-	"opslag.de/schobers/zntg/ui"
-)
-
-const (
-	fovy = 40 // vertical field of view in degrees
-	near = 1  // near clipping plane
-	far  = 10 // far clipping plane
-)
-
-var (
-	eye    = fauxgl.V(0, 0, 4)                // camera position
-	center = fauxgl.V(0, 0, 0)                // view center position
-	up     = fauxgl.V(0, 1, 0)                // up vector
-	light  = fauxgl.V(.5, 1, .75).Normalize() // light direction
-)
-
-func AnimatePolygon(polygon geom.PolygonF, hexColor string, renderer AnimationRenderer) image.Image {
-	mesh := generateMeshFromPolygon(polygon, .2)
-	renderer.setup(mesh)
-	return renderMeshAnimation(hexColor, renderer.frames(), renderer.render)
-}
-
-func AnimateSTL(resources ui.PhysicalResources, name, hexColor string, renderer AnimationRenderer) image.Image {
-	path, err := resources.FetchResource(name)
-	if err != nil {
-		panic(err)
-	}
-	mesh, err := fauxgl.LoadSTL(path)
-	if err != nil {
-		panic(err)
-	}
-	renderer.setup(mesh)
-	return renderMeshAnimation(hexColor, renderer.frames(), renderer.render)
-}
-
-type animationRendererBase struct {
-	Frames int
-	Mesh   *fauxgl.Mesh
-}
-
-func (r animationRendererBase) frames() int { return r.Frames }
-
-func (r *animationRendererBase) setup(mesh *fauxgl.Mesh) {
-	r.Mesh = mesh
-	mesh.BiUnitCube()
-}
-
-var _ AnimationRenderer = &RotateAnimationRenderer{}
-var _ AnimationRenderer = &WobbleAnimationRenderer{}
-
-type AnimationRenderer interface {
-	frames() int
-	setup(*fauxgl.Mesh)
-	render(*fauxgl.Context, int, float64)
-}
-
-func generateMeshFromPolygon(polygon geom.PolygonF, thickness float64) *fauxgl.Mesh {
-	vec := func(p geom.PointF, z float64) fauxgl.Vector { return fauxgl.V(p.X, p.Y, z) }
-	tri := fauxgl.NewTriangleForPoints
-	face := func(q, r, s geom.PointF, n float64) *fauxgl.Triangle {
-		return tri(vec(q, n*thickness), vec(r, n*thickness), vec(s, n*thickness))
-	}
-	var triangles []*fauxgl.Triangle
-	// generate front & back
-	for _, t := range polygon.Triangulate() {
-		triangles = append(triangles,
-			face(t.Points[0], t.Points[1], t.Points[2], 1),  // front
-			face(t.Points[2], t.Points[1], t.Points[0], -1), // back
-		)
-	}
-	// generate side
-	back, front := -thickness, thickness
-	for i, p := range polygon.Points {
-		next := polygon.Points[(i+1)%len(polygon.Points)]
-		q, r, s, t := vec(p, back), vec(next, back), vec(next, front), vec(p, front)
-		triangles = append(triangles, tri(q, r, s), tri(q, s, t))
-	}
-
-	mesh := fauxgl.NewTriangleMesh(triangles)
-	return mesh
-}
-
-func renderMeshAnimation(hexColor string, frames int, render func(*fauxgl.Context, int, float64)) image.Image {
-	const scale = 4
-	context := fauxgl.NewContext(TextureSize*scale, TextureSize*scale)
-
-	// matrix := fauxgl.LookAt(eye, center, up).Perspective(fovy, 1, near, far)
-
-	const s = 1.1
-	// rot3 := func(m fauxgl.Matrix) fauxgl.Matrix {
-	// 	return fauxgl.Matrix{
-	// 		X00: m.X20, X01: m.X10, X02: m.X00, X03: m.X03,
-	// 		X10: m.X21, X11: m.X11, X12: m.X01, X13: m.X13,
-	// 		X20: m.X22, X21: m.X12, X22: m.X02, X23: m.X23,
-	// 		X30: m.X30, X31: m.X31, X32: m.X32, X33: m.X33,
-	// 	}
-	// }
-
-	// sqrt_6_1 := 1 / geom.Sqrt(6)
-	// iso := fauxgl.Matrix{
-	// 	X00: sqrt_6_1 * geom.Sqrt(3), X01: 0, X02: -sqrt_6_1 * geom.Sqrt(3), X03: 0,
-	// 	X10: sqrt_6_1, X11: 2 * sqrt_6_1, X12: sqrt_6_1, X13: 0,
-	// 	X20: sqrt_6_1 * geom.Sqrt(2), X21: -sqrt_6_1 * geom.Sqrt(2), X22: sqrt_6_1 * geom.Sqrt(2), X23: 0,
-	// 	X30: 0, X31: 0, X32: 0, X33: 1}
-
-	matrix := fauxgl.Orthographic(-s, s, -s, s, near, far).Mul(fauxgl.LookAt(eye, center, up))
-
-	color := fauxgl.HexColor(hexColor)
-
-	animation := image.NewNRGBA(image.Rect(0, 0, TextureSize*frames, TextureSize))
-	for i := 0; i < frames; i++ {
-		context.ClearDepthBuffer()
-		context.ClearColorBufferWith(fauxgl.Transparent)
-
-		shader := fauxgl.NewPhongShader(matrix, light, eye)
-		shader.ObjectColor = color
-		shader.AmbientColor = fauxgl.MakeColor(mustHexColor(`#7F7F7F`))
-		context.Shader = shader
-
-		render(context, i, float64(i)/float64(frames))
-
-		frame := resize.Resize(TextureSize, TextureSize, context.Image(), resize.Bilinear)
-		draw.Copy(animation, image.Pt(i*TextureSize, 0), frame, frame.Bounds(), draw.Src, nil)
-	}
-	return animation
-}
-
-type RotateAnimationRenderer struct {
-	animationRendererBase
-
-	Rotation float64
-}
-
-func NewRotateAnimation(frames int) AnimationRenderer {
-	return &RotateAnimationRenderer{
-		animationRendererBase: animationRendererBase{Frames: frames},
-		Rotation:              2 * geom.Pi / float64(frames),
-	}
-}
-
-func (a RotateAnimationRenderer) render(context *fauxgl.Context, _ int, _ float64) {
-	context.DrawMesh(a.Mesh)
-	a.Mesh.Transform(fauxgl.Rotate(up, a.Rotation))
-}
-
-func saveMeshSTL(path, name string, mesh *fauxgl.Mesh) error {
-	stl, err := os.Create(path)
-	if err != nil {
-		return err
-	}
-	defer stl.Close()
-
-	fmt.Fprintf(stl, "solid %s\n", name)
-	for _, triangle := range mesh.Triangles {
-		normal := triangle.Normal()
-		fmt.Fprintf(stl, "  facet normal %f, %f, %f\n", normal.X, normal.Y, normal.Z)
-		fmt.Fprintf(stl, "   outer loop\n")
-		fmt.Fprintf(stl, "    vertex %f, %f, %f\n", triangle.V1.Position.X, triangle.V1.Position.Y, triangle.V1.Position.Z)
-		fmt.Fprintf(stl, "    vertex %f, %f, %f\n", triangle.V2.Position.X, triangle.V2.Position.Y, triangle.V2.Position.Z)
-		fmt.Fprintf(stl, "    vertex %f, %f, %f\n", triangle.V3.Position.X, triangle.V3.Position.Y, triangle.V3.Position.Z)
-		fmt.Fprintf(stl, "   endloop\n")
-		fmt.Fprintf(stl, "  endfacet\n")
-	}
-	fmt.Fprintf(stl, "endsolid %s\n", name)
-	return nil
-}
-
-func SaveSTLFromPolygon(path, name string, polygon geom.PolygonF, thickness float64) {
-	mesh := generateMeshFromPolygon(polygon, thickness)
-	saveMeshSTL(path, name, mesh)
-}
-
-type WobbleAnimationRenderer struct {
-	animationRendererBase
-
-	Wobble float64
-}
-
-func NewWobbleAnimation(frames int, wobble float64) AnimationRenderer {
-	return &WobbleAnimationRenderer{
-		animationRendererBase: animationRendererBase{Frames: frames},
-		Wobble:                wobble,
-	}
-}
-
-func (a WobbleAnimationRenderer) animate(frame float64) float64 {
-	frame += .25
-	if frame >= 1 {
-		frame -= 1
-	}
-	// return geom.Cos(float64(frame) * 2 * geom.Pi / float64(a.Frames))
-	return geom.Abs(frame*4-2) - 1
-}
-
-func (a WobbleAnimationRenderer) render(context *fauxgl.Context, frame int, animation float64) {
-	context.DrawMesh(a.Mesh)
-	curr := a.animate(animation)
-	next := a.animate(float64(frame+1) / float64(a.Frames))
-	a.Mesh.Transform(fauxgl.Rotate(up, (next-curr)*a.Wobble*geom.Pi/180))
-}

score.go

@@ -0,0 +1,88 @@
+package tins2021
+
+import (
+	"crypto/sha256"
+	"encoding/base64"
+	"fmt"
+)
+
+const scoreFileName = "score.json"
+
+type Highscores []Score
+
+func (h Highscores) AddScore(score, difficulty int) (Highscores, bool) {
+	highscores := len(h)
+	var rank = highscores
+	for ; rank > 0; rank-- {
+		if score <= h[rank-1].Score {
+			break
+		}
+	}
+	highscore := NewScore(score, difficulty)
+	if rank == highscores && highscores < 10 {
+		return append(h, highscore), true
+	}
+	if rank < 10 {
+		h = append(h[:rank], append([]Score{highscore}, h[rank:highscores]...)...)
+		if len(h) > 10 {
+			h = h[:10]
+		}
+		return h, true
+	}
+	return h, false
+}
+
+type Score struct {
+	Score      int
+	Difficulty int
+	Hash       string
+}
+
+func NewScore(score, difficulty int) Score {
+	s := Score{Score: score, Difficulty: difficulty}
+	s.Hash = s.hash()
+	return s
+}
+
+func (s *Score) hash() string {
+	hashText := fmt.Sprintf("tins2021_qbitter, %d, %d", s.Score, s.Difficulty)
+	hash := sha256.Sum256([]byte(hashText))
+	return base64.StdEncoding.EncodeToString(hash[:])
+}
+
+func (s *Score) Validate() bool {
+	hash := s.hash()
+	if hash == s.Hash {
+		return true
+	}
+	s.Score = 0
+	s.Difficulty = 0
+	return false
+}
+
+type ScoreState struct {
+	Current      Score
+	CurrentLives int
+	Highscores   Highscores
+}
+
+func LoadScores() (ScoreState, error) {
+	var state ScoreState
+	if err := LoadUserFileJSON(scoreFileName, &state); err != nil {
+		return ScoreState{}, err
+	}
+	state.Current.Validate()
+	for i := 0; i < len(state.Highscores); {
+		if !state.Highscores[i].Validate() {
+			state.Highscores = append(state.Highscores[:i], state.Highscores[i+1:]...)
+		} else {
+			i++
+		}
+	}
+
+	return state, nil
+}
+
+func SaveScores(s *ScoreState) error {
+	return SaveUserFileJSON(scoreFileName, s)
+}

score_test.go

@@ -0,0 +1,88 @@
+package tins2021
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func newFullHighscore() Highscores {
+	return Highscores{
+		NewScore(100, 100),
+		NewScore(90, 90),
+		NewScore(80, 80),
+		NewScore(70, 70),
+		NewScore(60, 60),
+		NewScore(50, 50),
+		NewScore(40, 40),
+		NewScore(30, 30),
+		NewScore(20, 20),
+		NewScore(10, 10),
+	}
+}
+
+func newHalfEmptyHighscore() Highscores {
+	return Highscores{
+		NewScore(100, 100),
+		NewScore(90, 90),
+		NewScore(80, 80),
+		NewScore(70, 70),
+		NewScore(60, 60),
+	}
+}
+
+func TestAddScoreBelowBottom(t *testing.T) {
+	h := newFullHighscore()
+	updated, high := h.AddScore(1, 1)
+	assert.False(t, high)
+	assert.Len(t, updated, 10)
+	for _, s := range h {
+		assert.Greater(t, s.Score, 1)
+	}
+}
+
+func TestAddScoreBottom(t *testing.T) {
+	h := newFullHighscore()
+	updated, high := h.AddScore(11, 11)
+	assert.True(t, high)
+	assert.Len(t, updated, 10)
+	assert.Equal(t, 11, updated[9].Score)
+}
+
+func TestAddScoreBottomNotFull(t *testing.T) {
+	h := Highscores{
+		NewScore(100, 100),
+		NewScore(90, 90),
+		NewScore(80, 80),
+		NewScore(70, 70),
+	}
+
+	updated, high := h.AddScore(50, 50)
+	assert.True(t, high)
+	assert.Len(t, updated, 5)
+	assert.Equal(t, 50, updated[4].Score)
+}
+
+func TestAddScoreMiddle(t *testing.T) {
+	h := newFullHighscore()
+	updated, high := h.AddScore(51, 51)
+	assert.True(t, high)
+	assert.Len(t, updated, 10)
+	assert.Equal(t, 51, updated[5].Score)
+}
+
+func TestAddScoreMiddleNotFull(t *testing.T) {
+	h := newHalfEmptyHighscore()
+	updated, high := h.AddScore(71, 71)
+	assert.True(t, high)
+	assert.Len(t, updated, 6)
+	assert.Equal(t, 71, updated[3].Score)
+}
+
+func TestAddScoreTop(t *testing.T) {
+	h := newFullHighscore()
+	updated, high := h.AddScore(101, 101)
+	assert.True(t, high)
+	assert.Len(t, updated, 10)
+	assert.Equal(t, 101, updated[0].Score)
+}

scripts/install.bat

@@ -0,0 +1 @@
+go build -tags static -ldflags "-s -w" -o "%GOPATH%/bin/qbitter.exe" opslag.de/schobers/tins2021/cmd/tins2021

scripts/release.sh

@@ -15,7 +15,8 @@ rm -rf build/linux*
 rm -rf build/macosx*
 rm -rf build/windows*
 
-mkdir -p build/release
+qbitter_release_dir=release/qbitter_${version_safe}
+mkdir -p build/${qbitter_release_dir}
 
 go generate ../cmd/tins2021
 
@@ -23,38 +24,38 @@ mkdir -p build/linux
 go build -tags static -ldflags "-s -w" -o build/linux/qbitter ../cmd/tins2021
 cp ../README.md build/linux
 cd build/linux
-zip -9 -q ../release/qbitter_${version_safe}_linux_amd64.zip *
-echo "Created Linux release: build/release/qbitter_${version_safe}_linux_amd64.zip"
+zip -9 -q ../${qbitter_release_dir}/qbitter_${version_safe}_linux_amd64.zip *
+echo "Created Linux release: build/${qbitter_release_dir}/qbitter_${version_safe}_linux_amd64.zip"
 cd ../..
 
 mkdir -p build/linux-allegro
 go build -tags static,allegro -ldflags "-s -w" -o build/linux-allegro/qbitter ../cmd/tins2021
 cp ../README.md build/linux-allegro
 cd build/linux-allegro
-zip -9 -q ../release/qbitter_allegro_${version_safe}_linux_amd64.zip *
-echo "Created Linux (Allegro) release: build/release/qbitter_allegro_${version_safe}_linux_amd64.zip"
+zip -9 -q ../${qbitter_release_dir}/qbitter_allegro_${version_safe}_linux_amd64.zip *
+echo "Created Linux (Allegro) release: build/${qbitter_release_dir}/qbitter_allegro_${version_safe}_linux_amd64.zip"
 cd ../..
 
 mkdir -p build/macosx
 CGO_ENABLED=1 CC=o64-clang CXX=o64-clang++ GOOS=darwin GOARCH=amd64 go build -tags static -ldflags "-s -w" -o build/macosx/qbitter ../cmd/tins2021
 cp ../README.md build/macosx
 cd build/macosx
-zip -9 -q ../release/qbitter_${version_safe}_macosx_amd64.zip *
-echo "Created Mac OS X release: build/release/qbitter_${version_safe}_macosx_amd64.zip"
+zip -9 -q ../${qbitter_release_dir}/qbitter_${version_safe}_macosx_amd64.zip *
+echo "Created Mac OS X release: build/${qbitter_release_dir}/qbitter_${version_safe}_macosx_amd64.zip"
 cd ../..
 
 mkdir -p build/windows
 CGO_ENABLED=1 CC=x86_64-w64-mingw32-gcc GOOS=windows GOARCH=amd64 go build -tags static -ldflags "-s -w" -o build/windows/qbitter.exe ../cmd/tins2021
 cp ../README.md build/windows
 cd build/windows
-zip -9 -q ../release/qbitter_${version_safe}_windows_amd64.zip *
-echo "Created Windows release: build/release/qbitter_${version_safe}_windows_amd64.zip"
+zip -9 -q ../${qbitter_release_dir}/qbitter_${version_safe}_windows_amd64.zip *
+echo "Created Windows release: build/${qbitter_release_dir}/qbitter_${version_safe}_windows_amd64.zip"
 cd ../..
 
 mkdir -p build/windows-allegro
 CGO_ENABLED=1 CC=x86_64-w64-mingw32-gcc GOOS=windows GOARCH=amd64 go build -tags static,allegro,mingw64_7_3 -ldflags "-s -w" -o build/windows-allegro/qbitter.exe ../cmd/tins2021
 cp ../README.md build/windows-allegro
 cd build/windows-allegro
-zip -9 -q ../release/qbitter_allegro_${version_safe}_windows_amd64.zip *
-echo "Created Windows (Allegro) release: build/release/qbitter_allegro_${version_safe}_windows_amd64.zip"
+zip -9 -q ../${qbitter_release_dir}/qbitter_allegro_${version_safe}_windows_amd64.zip *
+echo "Created Windows (Allegro) release: build/${qbitter_release_dir}/qbitter_allegro_${version_safe}_windows_amd64.zip"
 cd ../..

settings.go

@@ -4,34 +4,40 @@ import (
 	"os"
 
 	"opslag.de/schobers/geom"
-	"opslag.de/schobers/zntg"
 )
 
-type Settings struct {
-	Window WindowSettings
+const settingsFileName = "settings.json"
+
+type AudioSettings struct {
+	SoundVolume float64
+	MusicVolume float64
 }
 
-func SettingsPath() (string, error) {
-	return UserFile("settings.json")
+type ControlsSettings struct {
+	Type          string
+	MoveDownRight string
+	MoveDownLeft  string
+	MoveUpLeft    string
+	MoveUpRight   string
+	Virtual       bool
+}
+
+type Settings struct {
+	Audio    AudioSettings
+	Controls ControlsSettings
+	Window   WindowSettings
 }
 
 func (s *Settings) Init() error {
-	path, err := SettingsPath()
-	if err != nil {
-		return err
-	}
-	if _, err := os.Stat(path); os.IsNotExist(err) {
+	err := LoadUserFileJSON(settingsFileName, s)
+	if os.IsNotExist(err) {
 		return nil
 	}
-	return zntg.DecodeJSON(path, s)
+	return err
 }
 
 func (s *Settings) Store() error {
-	path, err := SettingsPath()
-	if err != nil {
-		return err
-	}
-	return zntg.EncodeJSON(path, s)
+	return SaveUserFileJSON(settingsFileName, s)
 }
 
 type WindowSettings struct {