move source files to src

src/konstructor/config.go

@@ -0,0 +1,69 @@
+package konstructor
+
+import "image/color"
+
+type ResolutionSet struct {
+	Width  int
+	Height int
+}
+
+var QVGAResolutionSet = ResolutionSet{
+	Width:  320,
+	Height: 240,
+}
+
+var VGAResolutionSet = ResolutionSet{
+	Width:  640,
+	Height: 480,
+}
+
+var SVGAResolutionSet = ResolutionSet{
+	Width:  800,
+	Height: 600,
+}
+
+var XGAResolutionSet = ResolutionSet{
+	Width:  1024,
+	Height: 768,
+}
+
+var ResolutionSets = []ResolutionSet{
+	QVGAResolutionSet,
+	VGAResolutionSet,
+	SVGAResolutionSet,
+	XGAResolutionSet,
+}
+
+type KeyMap struct {
+	Up      any
+	Down    any
+	Right   any
+	Left    any
+	Action0 any
+	Action1 any
+	Action2 any
+	Action3 any
+}
+
+type ScreenConfig struct {
+	Width  int
+	Height int
+	Scale  int
+}
+type HeaderConfig struct {
+	BackgroundColor color.Color
+	Height          int
+	FontLayout      FontLayout
+}
+
+type Config struct {
+	Name   string
+	Screen *ScreenConfig
+	Header *HeaderConfig
+	KeyMap KeyMap
+}
+
+func (c *Config) SetResolution(set ResolutionSet) {
+	c.Screen.Width = set.Width
+	c.Screen.Height = set.Height
+}

src/konstructor/engines/easy_ebitengine/engine.controller.go

@@ -0,0 +1,57 @@
+package easy_ebitengine
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/hajimehoshi/ebiten"
+	"github.com/hajimehoshi/ebiten/inpututil"
+)
+
+func (e *Engine) WatchKeyPress() {
+	values := reflect.ValueOf(e.Config.KeyMap)
+
+	for i := 0; i < values.NumField(); i++ {
+		key := values.Field(i).Interface().(ebiten.Key)
+		if inpututil.IsKeyJustPressed(key) {
+			fmt.Printf("Key pressed: %s\n", key)
+			e.PressedKey = key
+		}
+	}
+}
+
+func (e *Engine) ClearKeyPresed() {
+	e.PressedKey = Engine{}.PressedKey
+}
+
+func (e *Engine) UpPressed() bool {
+	return e.PressedKey == e.Config.KeyMap.Up.(ebiten.Key)
+}
+
+func (e *Engine) DownPressed() bool {
+	return e.PressedKey == e.Config.KeyMap.Down.(ebiten.Key)
+}
+
+func (e *Engine) RightPressed() bool {
+	return e.PressedKey == e.Config.KeyMap.Right.(ebiten.Key)
+}
+
+func (e *Engine) LeftPressed() bool {
+	return e.PressedKey == e.Config.KeyMap.Left.(ebiten.Key)
+}
+
+func (e *Engine) Action0Pressed() bool {
+	return e.PressedKey == e.Config.KeyMap.Action0.(ebiten.Key)
+}
+
+func (e *Engine) Action1Pressed() bool {
+	return e.PressedKey == e.Config.KeyMap.Action1.(ebiten.Key)
+}
+
+func (e *Engine) Action2Pressed() bool {
+	return e.PressedKey == e.Config.KeyMap.Action2.(ebiten.Key)
+}
+
+func (e *Engine) Action3Pressed() bool {
+	return e.PressedKey == e.Config.KeyMap.Action3.(ebiten.Key)
+}

src/konstructor/engines/easy_ebitengine/engine.go

@@ -0,0 +1,55 @@
+package easy_ebitengine
+
+import (
+	"game/src/konstructor"
+	"os"
+
+	"github.com/hajimehoshi/ebiten"
+)
+
+type Engine struct {
+	Domain     konstructor.DomainInterface
+	Config     *konstructor.Config
+	KContext   *konstructor.KContext
+	PressedKey ebiten.Key
+}
+
+func (e *Engine) Layout(outsideWidth, outsideHeight int) (int, int) {
+	return e.Config.Screen.Width, e.Config.Screen.Height
+}
+
+func (e *Engine) Update(screen *ebiten.Image) error {
+	e.WatchKeyPress()
+	if e.KContext.ScreenTypeIs(konstructor.MenuScreenType) {
+		e.MenuUpdate()
+	}
+	if e.KContext.ScreenTypeIs(konstructor.DialogScreenType) {
+		e.DialogUpdate()
+	}
+	if e.KContext.ScreenTypeIs(konstructor.PlaygroundScreenType) {
+		e.PlaygroundUpdate()
+	}
+	if e.KContext.ScreenTypeIs(konstructor.InventoryScreenType) {
+		e.InventoryUpdate()
+	}
+	return nil
+}
+
+func (e *Engine) Draw(screen *ebiten.Image) {
+	if e.KContext.ScreenTypeIs(konstructor.MenuScreenType) {
+		e.MenuDraw(screen)
+	}
+	if e.KContext.ScreenTypeIs(konstructor.DialogScreenType) {
+		e.DialogDraw(screen)
+	}
+	if e.KContext.ScreenTypeIs(konstructor.PlaygroundScreenType) {
+		e.PlaygroundDraw(screen)
+	}
+	if e.KContext.ScreenTypeIs(konstructor.InventoryScreenType) {
+		e.InventoryDraw(screen)
+	}
+	if e.Action3Pressed() {
+		os.Exit(1)
+	}
+	e.ClearKeyPresed()
+}

src/konstructor/engines/easy_ebitengine/engine.utils.go

@@ -0,0 +1,19 @@
+package easy_ebitengine
+
+import (
+	"game/src/konstructor"
+	"log"
+
+	_ "image/png"
+
+	"github.com/hajimehoshi/ebiten"
+)
+
+func (e *Engine) GetImage(render_options konstructor.Render) *ebiten.Image {
+	img := render_options.GetImage()
+	out, err := ebiten.NewImageFromImage(img, 0)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return out
+}

src/konstructor/engines/easy_ebitengine/engine.wrapper.go

@@ -0,0 +1,25 @@
+package easy_ebitengine
+
+import (
+	"game/src/konstructor"
+
+	"github.com/hajimehoshi/ebiten"
+)
+
+type EngineWrapper struct {
+	Engine Engine
+}
+
+func (ew *EngineWrapper) Init(options konstructor.EngineArgs) {
+	ew.Engine = Engine{
+		KContext: options.KContext,
+		Domain:   options.Domain,
+		Config:   options.Config,
+	}
+	ebiten.SetWindowSize(options.Config.Screen.Width, options.Config.Screen.Height)
+	ebiten.SetWindowTitle(options.Config.Name)
+}
+
+func (ew *EngineWrapper) Run() {
+	ebiten.RunGame(&ew.Engine)
+}

src/konstructor/engines/easy_ebitengine/screen.dialog.go

@@ -0,0 +1,34 @@
+package easy_ebitengine
+
+import (
+	"github.com/hajimehoshi/ebiten"
+	"github.com/hajimehoshi/ebiten/text"
+)
+
+func (e *Engine) DialogUpdate() {
+	dialog := e.Domain.GetDialog(e.KContext.ActiveDialog)
+
+	if e.UpPressed() && dialog.CurrentSelected != 0 {
+		dialog.CurrentSelected--
+	}
+
+	if e.DownPressed() && dialog.CurrentSelected != len(dialog.Choices)-1 {
+		dialog.CurrentSelected++
+	}
+
+	if e.Action0Pressed() {
+		dialog.Choices[dialog.CurrentSelected].Handler()
+	}
+	e.Domain.SetDialog(e.KContext.ActiveDialog, dialog)
+}
+
+func (e *Engine) DialogDraw(screen *ebiten.Image) {
+	dialog := e.Domain.GetDialog(e.KContext.ActiveDialog)
+
+	face := dialog.Layout.ChoiceFont.GetFontFace(e.Config.Screen.Scale)
+
+	for i, choice := range dialog.Choices {
+		offset := int(dialog.Layout.ChoiceFont.Size) * (i + 1)
+		text.Draw(screen, choice.Label+"\n", face, 8, offset, dialog.GetChoiceColor(i))
+	}
+}

src/konstructor/engines/easy_ebitengine/screen.inventory.go

@@ -0,0 +1,25 @@
+package easy_ebitengine
+
+import (
+	"game/src/konstructor"
+
+	"github.com/hajimehoshi/ebiten"
+)
+
+func (e *Engine) InventoryUpdate() {
+}
+
+func (e *Engine) InventoryDraw(screen *ebiten.Image) {
+}
+
+func (e *Engine) AddToInventory(item *konstructor.Item) {
+	e.Domain.AddToInventory(item)
+}
+
+func (e *Engine) RemoveFromInventory(item *konstructor.Item) {
+	e.Domain.RemoveFromInventory(item)
+}
+
+func (e *Engine) UseInventoryItem(item *konstructor.Item) {
+	e.Domain.UseInventoryItem(item)
+}

src/konstructor/engines/easy_ebitengine/screen.menu.go

@@ -0,0 +1,35 @@
+package easy_ebitengine
+
+import (
+	"github.com/hajimehoshi/ebiten"
+	"github.com/hajimehoshi/ebiten/text"
+)
+
+func (e *Engine) MenuUpdate() {
+	menu := e.Domain.GetMenu(e.KContext.ActiveMenu)
+
+	if e.UpPressed() && menu.CurrentSelected != 0 {
+		menu.CurrentSelected--
+	}
+
+	if e.DownPressed() && menu.CurrentSelected != len(menu.MenuItems)-1 {
+		menu.CurrentSelected++
+	}
+
+	if e.Action0Pressed() {
+		menu.MenuItems[menu.CurrentSelected].Handler()
+	}
+
+	e.Domain.SetMenu(e.KContext.ActiveMenu, menu)
+}
+
+func (e *Engine) MenuDraw(screen *ebiten.Image) {
+	menu := e.Domain.GetMenu(e.KContext.ActiveMenu)
+	face := menu.Layout.MenuItemFont.GetFontFace(e.Config.Screen.Scale)
+
+	for i, menu_item := range menu.MenuItems {
+		color := menu.GetMenuItemColor(i)
+		offset := int(menu.Layout.MenuItemFont.Size) * (i + 1)
+		text.Draw(screen, menu_item.Label+"\n", face, 8, offset, color)
+	}
+}

src/konstructor/engines/easy_ebitengine/screen.playground.go

@@ -0,0 +1,41 @@
+package easy_ebitengine
+
+import (
+	"game/src/konstructor"
+
+	"github.com/hajimehoshi/ebiten"
+)
+
+func (e *Engine) PlaygroundUpdate() {
+	level := e.Domain.GetLevel(e.KContext.CurrentLevel)
+	e.Domain.Process(konstructor.DomainProcessArgs{
+		Level:    &level,
+		KContext: e.KContext,
+	})
+}
+
+func (e *Engine) PlaygroundDraw(screen *ebiten.Image) {
+	e.PlaygroundBackgroundDraw(screen)
+	e.PlaygroundPlatformsDraw(screen)
+	e.PlaygroundItemsDraw(screen)
+	e.PlaygroundNPCsDraw(screen)
+	e.PlaygroundDefaultPlayerDraw(screen)
+	e.PlaygroundHeaderDraw(screen)
+}
+
+func (e *Engine) PlaygroundBackgroundDraw(screen *ebiten.Image) {
+	playground := e.GetPlayground()
+	e.PlaygroundAssetDraw(screen, playground.Render, konstructor.Position{})
+}
+
+func (e *Engine) GetPlayground() konstructor.Playground {
+	level := e.Domain.GetLevel(e.KContext.CurrentLevel)
+	return level.Playgrounds[e.KContext.CurrentPlayground]
+}
+
+func (e *Engine) PlaygroundAssetDraw(screen *ebiten.Image, render konstructor.Render, position konstructor.Position) {
+	geoM := ebiten.GeoM{}
+	geoM.Translate(float64(position.X), float64(position.Y))
+	geoM.Scale(float64(e.Config.Screen.Scale), float64(e.Config.Screen.Scale))
+	screen.DrawImage(e.GetImage(render), &ebiten.DrawImageOptions{GeoM: geoM})
+}

src/konstructor/engines/easy_ebitengine/screen.playground.header.go

@@ -0,0 +1,37 @@
+package easy_ebitengine
+
+import (
+	"fmt"
+	"game/src/konstructor"
+	"image/color"
+
+	"github.com/hajimehoshi/ebiten"
+	"github.com/hajimehoshi/ebiten/text"
+)
+
+func (e *Engine) PlaygroundHeaderDraw(screen *ebiten.Image) {
+	e.PlaygroundHeaderBackgroundDraw(screen)
+	e.PlaygroundHeaderTextDraw(screen)
+}
+
+func (e *Engine) PlaygroundHeaderBackgroundDraw(screen *ebiten.Image) {
+	background, _ := ebiten.NewImage(e.Config.Screen.Width, e.Config.Header.Height, ebiten.FilterDefault)
+	background.Fill(e.Config.Header.BackgroundColor)
+	geoM := ebiten.GeoM{}
+	geoM.Scale(float64(e.Config.Screen.Scale), float64(e.Config.Screen.Scale))
+	screen.DrawImage(background, &ebiten.DrawImageOptions{GeoM: geoM})
+}
+
+func (e *Engine) PlaygroundHeaderTextDraw(screen *ebiten.Image) {
+	face := e.Config.Header.FontLayout.GetFontFace(e.Config.Screen.Scale)
+	header_text := fmt.Sprint(e.Config.Name, "    LIVES   ", e.KContext.LiveCount, "    LEVEL    ", e.KContext.CurrentLevel)
+
+	offset := getTopOffset(e.Config)
+	text.Draw(screen, header_text, face, 10, offset, color.Black)
+}
+
+func getTopOffset(config *konstructor.Config) int {
+	size := int(config.Header.FontLayout.Size) * config.Screen.Scale
+	height := config.Header.Height * config.Screen.Scale
+	return (height-size)/2 + size
+}

src/konstructor/engines/easy_ebitengine/screen.playground.item.go

@@ -0,0 +1,10 @@
+package easy_ebitengine
+
+import "github.com/hajimehoshi/ebiten"
+
+func (e *Engine) PlaygroundItemsDraw(screen *ebiten.Image) {
+	playground := e.GetPlayground()
+	for _, item := range playground.Items {
+		e.PlaygroundAssetDraw(screen, item.Type.Render, item.Position)
+	}
+}

src/konstructor/engines/easy_ebitengine/screen.playground.npc.go

@@ -0,0 +1,10 @@
+package easy_ebitengine
+
+import "github.com/hajimehoshi/ebiten"
+
+func (e *Engine) PlaygroundNPCsDraw(screen *ebiten.Image) {
+	playground := e.GetPlayground()
+	for _, npc := range playground.NPCs {
+		e.PlaygroundAssetDraw(screen, npc.Type.Render, npc.Position)
+	}
+}

src/konstructor/engines/easy_ebitengine/screen.playground.platform.go

@@ -0,0 +1,10 @@
+package easy_ebitengine
+
+import "github.com/hajimehoshi/ebiten"
+
+func (e *Engine) PlaygroundPlatformsDraw(screen *ebiten.Image) {
+	playground := e.GetPlayground()
+	for _, platform := range playground.Platforms {
+		e.PlaygroundAssetDraw(screen, platform.Type.Render, platform.Position)
+	}
+}

src/konstructor/engines/easy_ebitengine/screen.playground.player.go

@@ -0,0 +1,8 @@
+package easy_ebitengine
+
+import "github.com/hajimehoshi/ebiten"
+
+func (e *Engine) PlaygroundDefaultPlayerDraw(screen *ebiten.Image) {
+	player := e.Domain.GetDefaultPlayer()
+	e.PlaygroundAssetDraw(screen, player.Type.Render, player.Position)
+}

src/konstructor/interface.domain.go

@@ -0,0 +1,53 @@
+package konstructor
+
+type DomainBaseFields struct {
+	MenuMap         MenuMap
+	DialogMap       DialogMap
+	Levels          []Level
+	Players         []Player
+	PlatformTypeMap PlatformTypeMap
+	ItemTypeMap     ItemTypeMap
+	NPCTypeMap      NPCTypeMap
+}
+
+type DomainInterface interface {
+	Init()
+
+	GetInitialKContext() *KContext
+	GetInitialConfig() *Config
+
+	GetMenuMap() MenuMap
+	GetMenu(name MenuMapKey) Menu
+	SetMenu(name MenuMapKey, menu Menu)
+
+	GetDialogMap() DialogMap
+	GetDialog(name DialogMapKey) Dialog
+	SetDialog(name DialogMapKey, menu Dialog)
+
+	GetLevels() []Level
+	GetLevel(index int) Level
+
+	GetPlayers() []Player
+	GetPlayer(index int) Player
+	GetDefaultPlayer() Player
+
+	GetPlatformTypeMap() PlatformTypeMap
+	GetPlatformType(name PlatformTypeMapKey) PlatformType
+
+	GetItemTypeMap() ItemTypeMap
+	GetItemType(name ItemTypeMapKey) ItemType
+
+	GetNPCTypeMap() NPCTypeMap
+	GetNPCType(name NPCTypeMapKey) NPCType
+
+	AddToInventory(item *Item) bool
+	RemoveFromInventory(item *Item) bool
+	UseInventoryItem(item *Item) bool
+
+	Process(DomainProcessArgs)
+}
+
+type DomainProcessArgs struct {
+	Level    *Level
+	KContext *KContext
+}

src/konstructor/interface.engine.go

@@ -0,0 +1,12 @@
+package konstructor
+
+type EngineArgs struct {
+	Domain   DomainInterface
+	KContext *KContext
+	Config   *Config
+}
+
+type EngineWrapperInterface interface {
+	Init(options EngineArgs)
+	Run()
+}

src/konstructor/kcontext.go

@@ -0,0 +1,15 @@
+package konstructor
+
+type KContext struct {
+	ScreenType        ScreenType
+	ActiveMenu        MenuMapKey
+	ActiveDialog      DialogMapKey
+	CurrentLevel      int
+	CurrentPlayground int
+	Multiplayer       bool
+	LiveCount         int
+}
+
+func (c *KContext) ScreenTypeIs(name ScreenType) bool {
+	return c.ScreenType == name
+}

src/konstructor/konstructor.go

@@ -0,0 +1,18 @@
+// Game framework inspired by AGI
+package konstructor
+
+// Main struct of framework
+type Konstructor struct {
+	Domain        DomainInterface
+	EngineWrapper EngineWrapperInterface
+}
+
+func (k Konstructor) Init() {
+	k.Domain.Init()
+	k.EngineWrapper.Init(EngineArgs{
+		Domain:   k.Domain,
+		KContext: k.Domain.GetInitialKContext(),
+		Config:   k.Domain.GetInitialConfig(),
+	})
+	k.EngineWrapper.Run()
+}

src/konstructor/layout.font.go

@@ -0,0 +1,39 @@
+package konstructor
+
+import (
+	"image/color"
+	"io/ioutil"
+
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/opentype"
+)
+
+type FontName string
+
+type FontLayout struct {
+	Path           string
+	DPI            float64
+	Size           float64
+	Color          color.Color
+	SelectedColor  color.Color
+	cachedFontFace font.Face
+}
+
+func (fl *FontLayout) GetFontFace(scale int) font.Face {
+	if fl.cachedFontFace != nil {
+		return fl.cachedFontFace
+	}
+	file, _ := ioutil.ReadFile(fl.Path)
+	true_type, _ := opentype.Parse(file)
+	font_face, _ := opentype.NewFace(true_type, &opentype.FaceOptions{
+		Size:    fl.Size * float64(scale),
+		DPI:     fl.DPI,
+		Hinting: font.HintingVertical,
+	})
+	fl.cachedFontFace = font_face
+	return font_face
+}
+
+func GetFontPath(name FontName) string {
+	return "assets/fonts/" + string(name) + ".ttf"
+}

src/konstructor/layout.render.go

@@ -0,0 +1,34 @@
+package konstructor
+
+import (
+	"bytes"
+	"image"
+	"io/ioutil"
+	"log"
+)
+
+type Render struct {
+	Image       string
+	Width       int
+	Height      int
+	Visible     bool
+	cachedImage image.Image
+}
+
+func (ro *Render) GetImage() image.Image {
+	if ro.cachedImage != nil {
+		return ro.cachedImage
+	}
+
+	file, err := ioutil.ReadFile(ro.Image)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	img, _, err := image.Decode(bytes.NewReader(file))
+	if err != nil {
+		log.Fatal(err)
+	}
+	ro.cachedImage = img
+	return img
+}

src/konstructor/object.go

@@ -0,0 +1,23 @@
+package konstructor
+
+type ObjectType string
+
+const (
+	ItemObjectType     ObjectType = "item"
+	NPCObjectType      ObjectType = "npc"
+	PlatformObjectType ObjectType = "platform"
+	PlayerObjectType   ObjectType = "player"
+)
+
+type ObjectDirectoryMap map[ObjectType]string
+
+var ObjectDirectories = ObjectDirectoryMap{
+	ItemObjectType:     "items",
+	NPCObjectType:      "npcs",
+	PlatformObjectType: "platforms",
+	PlayerObjectType:   "players",
+}
+
+func GetObjectDirectory(name ObjectType) string {
+	return "assets/images/" + ObjectDirectories[name] + "/"
+}

src/konstructor/object.item.go

@@ -0,0 +1,20 @@
+package konstructor
+
+type ItemTypeMapKey string
+
+type ItemTypeMap map[ItemTypeMapKey]ItemType
+
+type ItemType struct {
+	ID     string
+	Render Render
+}
+
+type Item struct {
+	ID       string
+	Type     ItemType
+	Position Position
+}
+
+func GetItemTypeImagePath(name ItemTypeMapKey) string {
+	return GetObjectDirectory(ItemObjectType) + string(name) + ".png"
+}

src/konstructor/object.npc.go

@@ -0,0 +1,20 @@
+package konstructor
+
+type NPCTypeMapKey string
+
+type NPCTypeMap map[NPCTypeMapKey]NPCType
+
+type NPCType struct {
+	ID     string
+	Render Render
+}
+
+type NPC struct {
+	ID       string
+	Type     NPCType
+	Position Position
+}
+
+func GetNPCTypeImagePath(name NPCTypeMapKey) string {
+	return GetObjectDirectory(NPCObjectType) + string(name) + ".png"
+}

src/konstructor/object.platform.go

@@ -0,0 +1,20 @@
+package konstructor
+
+type PlatformTypeMapKey string
+
+type PlatformTypeMap map[PlatformTypeMapKey]PlatformType
+
+type PlatformType struct {
+	ID     string
+	Render Render
+}
+
+type Platform struct {
+	ID       string
+	Type     PlatformType
+	Position Position
+}
+
+func GetPlatformTypeImagePath(name PlatformTypeMapKey) string {
+	return GetObjectDirectory(PlatformObjectType) + string(name) + ".png"
+}

src/konstructor/object.player.go

@@ -0,0 +1,29 @@
+package konstructor
+
+type PlayerTypeID string
+
+type InventoryItem struct {
+	Item   Item
+	Used   bool
+	Active bool
+}
+
+type Inventory struct {
+	Items []InventoryItem
+}
+
+type PlayerType struct {
+	ID     PlayerTypeID
+	Render Render
+}
+
+type Player struct {
+	ID        string
+	Type      PlayerType
+	Position  Position
+	Inventory Inventory
+}
+
+func GetPlayerTypeImagePath(name PlayerTypeID) string {
+	return GetObjectDirectory(PlayerObjectType) + string(name) + ".png"
+}

src/konstructor/screen.dialog.go

@@ -0,0 +1,32 @@
+package konstructor
+
+import "image/color"
+
+type DialogMapKey string
+
+type DialogMap map[DialogMapKey]Dialog
+
+type DialogLayout struct {
+	Render     Render
+	ChoiceFont FontLayout
+}
+
+type DialogChoice struct {
+	ID      string
+	Label   string
+	Handler func()
+}
+
+type Dialog struct {
+	CurrentSelected int
+	Layout          DialogLayout
+	Choices         []DialogChoice
+}
+
+func (dialog *Dialog) GetChoiceColor(i int) color.Color {
+	if dialog.CurrentSelected == i {
+		return dialog.Layout.ChoiceFont.SelectedColor
+	} else {
+		return dialog.Layout.ChoiceFont.Color
+	}
+}

src/konstructor/screen.menu.go

@@ -0,0 +1,31 @@
+package konstructor
+
+import "image/color"
+
+type MenuMapKey string
+
+type MenuMap map[MenuMapKey]Menu
+
+type MenuLayout struct {
+	MenuItemFont FontLayout
+}
+
+type MenuItem struct {
+	ID      string
+	Label   string
+	Handler func()
+}
+
+type Menu struct {
+	CurrentSelected int
+	Layout          MenuLayout
+	MenuItems       []MenuItem
+}
+
+func (menu *Menu) GetMenuItemColor(i int) color.Color {
+	if menu.CurrentSelected == i {
+		return menu.Layout.MenuItemFont.SelectedColor
+	} else {
+		return menu.Layout.MenuItemFont.Color
+	}
+}

src/konstructor/screen.playground.go

@@ -0,0 +1,27 @@
+package konstructor
+
+type PlaygroundID string
+
+type Position struct {
+	X int
+	Y int
+	Z int
+}
+
+type Playground struct {
+	ID        PlaygroundID
+	Render    Render
+	Platforms []Platform
+	NPCs      []NPC
+	Items     []Item
+}
+
+type Level struct {
+	ID          string
+	Name        string
+	Playgrounds []Playground
+}
+
+func GetPlaygroundImagePath(name PlaygroundID) string {
+	return "assets/images/playgrounds/" + string(name) + ".png"
+}

src/konstructor/screen.type.go

@@ -0,0 +1,10 @@
+package konstructor
+
+type ScreenType string
+
+const (
+	MenuScreenType       ScreenType = "menu"
+	DialogScreenType     ScreenType = "dialog"
+	PlaygroundScreenType ScreenType = "playground"
+	InventoryScreenType  ScreenType = "inventory"
+)