Create player inventory menu

engine/arbitrary_drawable.go

@@ -1,4 +1,4 @@
-package render
+package engine
 
 import (
 	"github.com/gdamore/tcell/v2/views"

engine/grid.go

@@ -1,4 +1,4 @@
-package render
+package engine
 
 import (
 	"mvvasilev/last_light/util"
@@ -119,6 +119,10 @@ func (g *Grid) Unhighlight() {
 	g.isHighlighted = false
 }
 
+func (g *Grid) Position() util.Position {
+	return g.position
+}
+
 // C###T###T###C
 // #   #   #   #
 // #   #   #   #

engine/layers.go

@@ -1,4 +1,4 @@
-package render
+package engine
 
 import (
 	"slices"

engine/raw.go

@@ -1,4 +1,4 @@
-package render
+package engine
 
 import (
 	"mvvasilev/last_light/util"

engine/rectangle.go

@@ -1,4 +1,4 @@
-package render
+package engine
 
 import (
 	"mvvasilev/last_light/util"

engine/render_context.go

@@ -1,4 +1,4 @@
-package render
+package engine
 
 import (
 	"errors"

engine/text.go

@@ -1,4 +1,4 @@
-package render
+package engine
 
 import (
 	"mvvasilev/last_light/util"

engine/viewport.go

@@ -1,4 +1,4 @@
-package render
+package engine
 
 import (
 	"mvvasilev/last_light/util"

game/game.go

@@ -1,8 +1,8 @@
 package game
 
 import (
+	"mvvasilev/last_light/engine"
 	"mvvasilev/last_light/game/state"
-	"mvvasilev/last_light/render"
 
 	"github.com/gdamore/tcell/v2"
 )
@@ -46,6 +46,6 @@ func (g *Game) Tick(dt int64) bool {
 	return true
 }
 
-func (g *Game) CollectDrawables() []render.Drawable {
+func (g *Game) CollectDrawables() []engine.Drawable {
 	return g.state.CollectDrawables()
 }

game/game_context.go

@@ -2,7 +2,7 @@ package game
 
 import (
 	"log"
-	"mvvasilev/last_light/render"
+	"mvvasilev/last_light/engine"
 	"os"
 	"time"
 )
@@ -10,7 +10,7 @@ import (
 const TICK_RATE int64 = 50 // tick every 50ms ( 20 ticks per second )
 
 type GameContext struct {
-	renderContext *render.RenderContext
+	renderContext *engine.RenderContext
 
 	game *Game
 }
@@ -18,7 +18,7 @@ type GameContext struct {
 func CreateGameContext() *GameContext {
 	gc := new(GameContext)
 
-	rc, err := render.CreateRenderContext()
+	rc, err := engine.CreateRenderContext()
 
 	if err != nil {
 		log.Fatalf("%~v", err)

game/model/inventory.go

@@ -2,13 +2,21 @@ package model
 
 import "mvvasilev/last_light/util"
 
-type Inventory struct {
+type Inventory interface {
+	Items() []*Item
+	Shape() util.Size
+	Push(item Item) bool
+	Drop(x, y int) *Item
+	ItemAt(x, y int) *Item
+}
+
+type BasicInventory struct {
 	contents []*Item
 	shape    util.Size
 }
 
-func CreateInventory(shape util.Size) *Inventory {
-	inv := new(Inventory)
+func CreateInventory(shape util.Size) *BasicInventory {
+	inv := new(BasicInventory)
 
 	inv.contents = make([]*Item, 0, shape.Height()*shape.Width())
 	inv.shape = shape
@@ -16,15 +24,15 @@ func CreateInventory(shape util.Size) *Inventory {
 	return inv
 }
 
-func (i *Inventory) Items() (items []*Item) {
+func (i *BasicInventory) Items() (items []*Item) {
 	return i.contents
 }
 
-func (i *Inventory) Shape() util.Size {
+func (i *BasicInventory) Shape() util.Size {
 	return i.shape
 }
 
-func (i *Inventory) Push(item Item) (success bool) {
+func (i *BasicInventory) Push(item Item) (success bool) {
 	if len(i.contents) == i.shape.Area() {
 		return false
 	}
@@ -60,17 +68,21 @@ func (i *Inventory) Push(item Item) (success bool) {
 	return true
 }
 
-func (i *Inventory) Drop(x, y int) {
+func (i *BasicInventory) Drop(x, y int) *Item {
 	index := y*i.shape.Width() + x
 
 	if index > len(i.contents)-1 {
-		return
+		return nil
 	}
 
+	item := i.contents[index]
+
 	i.contents[index] = nil
+
+	return item
 }
 
-func (i *Inventory) ItemAt(x, y int) (item *Item) {
+func (i *BasicInventory) ItemAt(x, y int) (item *Item) {
 	index := y*i.shape.Width() + x
 
 	if index > len(i.contents)-1 {

game/model/item.go

@@ -1,126 +1,9 @@
 package model
 
 import (
-	"math/rand"
-
 	"github.com/gdamore/tcell/v2"
 )
 
-type ItemType struct {
-	name        string
-	description string
-	tileIcon    rune
-	itemIcon    string
-	maxStack    int
-
-	style tcell.Style
-}
-
-func (it *ItemType) Name() string {
-	return it.name
-}
-
-func (it *ItemType) Description() string {
-	return it.description
-}
-
-func (it *ItemType) TileIcon() rune {
-	return it.tileIcon
-}
-
-func (it *ItemType) Icon() string {
-	return it.itemIcon
-}
-
-func (it *ItemType) Style() tcell.Style {
-	return it.style
-}
-
-func (it *ItemType) MaxStack() int {
-	return it.maxStack
-}
-
-func ItemTypeFish() *ItemType {
-	return &ItemType{
-		name:        "Fish",
-		description: "What's a fish doing down here?",
-		tileIcon:    '>',
-		itemIcon:    "»o>",
-		style:       tcell.StyleDefault.Foreground(tcell.ColorDarkCyan),
-		maxStack:    16,
-	}
-}
-
-func ItemTypeGold() *ItemType {
-	return &ItemType{
-		name:        "Gold",
-		description: "Not all those who wander are lost",
-		tileIcon:    '¤',
-		itemIcon:    " ¤ ",
-		style:       tcell.StyleDefault.Foreground(tcell.ColorGoldenrod),
-		maxStack:    255,
-	}
-}
-
-func ItemTypeArrow() *ItemType {
-	return &ItemType{
-		name:        "Arrow",
-		description: "Ammunition for a bow",
-		tileIcon:    '-',
-		itemIcon:    "»->",
-		style:       tcell.StyleDefault.Foreground(tcell.ColorGoldenrod),
-		maxStack:    32,
-	}
-}
-
-func ItemTypeBow() *ItemType {
-	return &ItemType{
-		name:        "Bow",
-		description: "To shoot arrows with",
-		tileIcon:    ')',
-		itemIcon:    " |)",
-		style:       tcell.StyleDefault.Foreground(tcell.ColorBrown),
-		maxStack:    1,
-	}
-}
-
-func ItemTypeLongsword() *ItemType {
-	return &ItemType{
-		name:        "Longsword",
-		description: "You know nothing.",
-		tileIcon:    '/',
-		itemIcon:    "╪══",
-		style:       tcell.StyleDefault.Foreground(tcell.ColorSilver),
-		maxStack:    1,
-	}
-}
-
-func ItemTypeKey() *ItemType {
-	return &ItemType{
-		name:        "Key",
-		description: "Indispensable for unlocking things",
-		tileIcon:    '¬',
-		itemIcon:    " o╖",
-		style:       tcell.StyleDefault.Foreground(tcell.ColorDarkGoldenrod),
-		maxStack:    1,
-	}
-}
-
-type ItemTypeGenTable struct {
-}
-
-func GenerateItemType(genTable map[float32]*ItemType) *ItemType {
-	num := rand.Float32()
-
-	for k, v := range genTable {
-		if num > k {
-			return v
-		}
-	}
-
-	return nil
-}
-
 type Item struct {
 	name        string
 	description string

game/model/item_type.go

@@ -0,0 +1,119 @@
+package model
+
+import (
+	"math/rand"
+
+	"github.com/gdamore/tcell/v2"
+)
+
+type ItemType struct {
+	name        string
+	description string
+	tileIcon    rune
+	itemIcon    string
+	maxStack    int
+
+	style tcell.Style
+}
+
+func (it *ItemType) Name() string {
+	return it.name
+}
+
+func (it *ItemType) Description() string {
+	return it.description
+}
+
+func (it *ItemType) TileIcon() rune {
+	return it.tileIcon
+}
+
+func (it *ItemType) Icon() string {
+	return it.itemIcon
+}
+
+func (it *ItemType) Style() tcell.Style {
+	return it.style
+}
+
+func (it *ItemType) MaxStack() int {
+	return it.maxStack
+}
+
+func ItemTypeFish() *ItemType {
+	return &ItemType{
+		name:        "Fish",
+		description: "What's a fish doing down here?",
+		tileIcon:    '>',
+		itemIcon:    "»o>",
+		style:       tcell.StyleDefault.Foreground(tcell.ColorDarkCyan),
+		maxStack:    16,
+	}
+}
+
+func ItemTypeGold() *ItemType {
+	return &ItemType{
+		name:        "Gold",
+		description: "Not all those who wander are lost",
+		tileIcon:    '¤',
+		itemIcon:    " ¤ ",
+		style:       tcell.StyleDefault.Foreground(tcell.ColorGoldenrod),
+		maxStack:    255,
+	}
+}
+
+func ItemTypeArrow() *ItemType {
+	return &ItemType{
+		name:        "Arrow",
+		description: "Ammunition for a bow",
+		tileIcon:    '-',
+		itemIcon:    "»->",
+		style:       tcell.StyleDefault.Foreground(tcell.ColorGoldenrod),
+		maxStack:    32,
+	}
+}
+
+func ItemTypeBow() *ItemType {
+	return &ItemType{
+		name:        "Bow",
+		description: "To shoot arrows with",
+		tileIcon:    ')',
+		itemIcon:    " |)",
+		style:       tcell.StyleDefault.Foreground(tcell.ColorBrown),
+		maxStack:    1,
+	}
+}
+
+func ItemTypeLongsword() *ItemType {
+	return &ItemType{
+		name:        "Longsword",
+		description: "You know nothing.",
+		tileIcon:    '/',
+		itemIcon:    "╪══",
+		style:       tcell.StyleDefault.Foreground(tcell.ColorSilver),
+		maxStack:    1,
+	}
+}
+
+func ItemTypeKey() *ItemType {
+	return &ItemType{
+		name:        "Key",
+		description: "Indispensable for unlocking things",
+		tileIcon:    '¬',
+		itemIcon:    " o╖",
+		style:       tcell.StyleDefault.Foreground(tcell.ColorDarkGoldenrod),
+		maxStack:    1,
+	}
+}
+
+func GenerateItemType(genTable map[float32]*ItemType) *ItemType {
+	num := rand.Float32()
+
+	for k, v := range genTable {
+		if num > k {
+			return v
+		}
+	}
+
+	return nil
+}

game/model/player.go

@@ -11,7 +11,7 @@ type Player struct {
 	id       uuid.UUID
 	position util.Position
 
-	inventory *Inventory
+	inventory *EquippedInventory
 }
 
 func CreatePlayer(x, y int) *Player {
@@ -19,7 +19,7 @@ func CreatePlayer(x, y int) *Player {
 
 	p.id = uuid.New()
 	p.position = util.PositionAt(x, y)
-	p.inventory = CreateInventory(util.SizeOf(8, 4))
+	p.inventory = CreatePlayerInventory()
 
 	return p
 }
@@ -48,7 +48,7 @@ func (p *Player) Transparent() bool {
 	return false
 }
 
-func (p *Player) Inventory() *Inventory {
+func (p *Player) Inventory() *EquippedInventory {
 	return p.inventory
 }
 

game/model/player_inventory.go

@@ -0,0 +1,72 @@
+package model
+
+import "mvvasilev/last_light/util"
+
+type EquippedSlot int
+
+const (
+	EquippedSlotOffhand EquippedSlot = iota
+	EquippedSlotDominantHand
+	EquippedSlotHead
+	EquippedSlotChestplate
+	EquippedSlotLeggings
+	EquippedSlotShoes
+)
+
+type EquippedInventory struct {
+	offHand      *Item
+	dominantHand *Item
+
+	head       *Item
+	chestplate *Item
+	leggings   *Item
+	shoes      *Item
+
+	*BasicInventory
+}
+
+func CreatePlayerInventory() *EquippedInventory {
+	return &EquippedInventory{
+		BasicInventory: CreateInventory(util.SizeOf(8, 4)),
+	}
+}
+
+func (ei *EquippedInventory) AtSlot(slot EquippedSlot) *Item {
+	switch slot {
+	case EquippedSlotOffhand:
+		return ei.offHand
+	case EquippedSlotDominantHand:
+		return ei.dominantHand
+	case EquippedSlotHead:
+		return ei.head
+	case EquippedSlotChestplate:
+		return ei.chestplate
+	case EquippedSlotLeggings:
+		return ei.leggings
+	case EquippedSlotShoes:
+		return ei.shoes
+	default:
+		return nil
+	}
+}
+
+func (ei *EquippedInventory) Equip(item Item, slot EquippedSlot) *Item {
+	ref := &item
+
+	switch slot {
+	case EquippedSlotOffhand:
+		ei.offHand = ref
+	case EquippedSlotDominantHand:
+		ei.dominantHand = ref
+	case EquippedSlotHead:
+		ei.head = ref
+	case EquippedSlotChestplate:
+		ei.chestplate = ref
+	case EquippedSlotLeggings:
+		ei.leggings = ref
+	case EquippedSlotShoes:
+		ei.shoes = ref
+	}
+
+	return ref
+}

game/state/game_state.go

@@ -1,7 +1,7 @@
 package state
 
 import (
-	"mvvasilev/last_light/render"
+	"mvvasilev/last_light/engine"
 
 	"github.com/gdamore/tcell/v2"
 )
@@ -9,7 +9,7 @@ import (
 type GameState interface {
 	OnInput(e *tcell.EventKey)
 	OnTick(dt int64) GameState
-	CollectDrawables() []render.Drawable
+	CollectDrawables() []engine.Drawable
 }
 
 type PausableState interface {

game/state/inventory_screen_state.go

@@ -1,36 +1,24 @@
 package state
 
 import (
-	"fmt"
+	"mvvasilev/last_light/engine"
 	"mvvasilev/last_light/game/model"
-	"mvvasilev/last_light/render"
-	"mvvasilev/last_light/ui"
+	"mvvasilev/last_light/game/ui/menu"
 	"mvvasilev/last_light/util"
 
 	"github.com/gdamore/tcell/v2"
-	"github.com/gdamore/tcell/v2/views"
 )
 
 type InventoryScreenState struct {
 	prevState PausableState
 	exitMenu  bool
 
-	inventoryMenu  *ui.UIWindow
-	armourLabel    *ui.UILabel
-	armourGrid     *render.Grid
-	leftHandLabel  *ui.UILabel
-	leftHandBox    render.Rectangle
-	rightHandLabel *ui.UILabel
-	rightHandBox   render.Rectangle
-	inventoryGrid  *render.Grid
-	playerItems    *render.ArbitraryDrawable
-	selectedItem   *render.ArbitraryDrawable
-	help           *ui.UILabel
+	inventoryMenu         *menu.PlayerInventoryMenu
+	selectedInventorySlot util.Position
 
 	player *model.Player
 
 	moveInventorySlotDirection model.Direction
-	selectedInventorySlot      util.Position
 	dropSelectedInventorySlot  bool
 }
 
@@ -39,88 +27,9 @@ func CreateInventoryScreenState(player *model.Player, prevState PausableState) *
 
 	iss.prevState = prevState
 	iss.player = player
-	iss.exitMenu = false
 	iss.selectedInventorySlot = util.PositionAt(0, 0)
-
-	iss.inventoryMenu = ui.CreateWindow(43, 0, 37, 24, "INVENTORY", tcell.StyleDefault)
-
-	iss.armourLabel = ui.CreateSingleLineUILabel(58, 1, "ARMOUR", tcell.StyleDefault)
-
-	iss.armourGrid = render.CreateGrid(
-		53, 2, 3, 1, 4, 1, '┌', '─', '┬', '┐', '│', ' ', '│', '│', '├', '─', '┼', '┤', '└', '─', '┴', '┘', tcell.StyleDefault, tcell.StyleDefault.Background(tcell.ColorDarkSlateGray),
-	)
-
-	iss.leftHandLabel = ui.CreateUILabel(
-		46, 1, 5, 1, "OFF", tcell.StyleDefault,
-	)
-
-	iss.leftHandBox = render.CreateRectangle(
-		45, 2, 5, 3,
-		'┌', '─', '┐',
-		'│', ' ', '│',
-		'└', '─', '┘',
-		false, true,
-		tcell.StyleDefault,
-	)
-
-	iss.rightHandLabel = ui.CreateUILabel(
-		74, 1, 5, 1, "DOM", tcell.StyleDefault,
-	)
-
-	iss.rightHandBox = render.CreateRectangle(
-		73, 2, 5, 3,
-		'┌', '─', '┐',
-		'│', ' ', '│',
-		'└', '─', '┘',
-		false, true,
-		tcell.StyleDefault,
-	)
-
-	iss.inventoryGrid = render.CreateGrid(
-		45, 5, 3, 1, 8, 4, '┌', '─', '┬', '┐', '│', ' ', '│', '│', '├', '─', '┼', '┤', '└', '─', '┴', '┘', tcell.StyleDefault, tcell.StyleDefault.Background(tcell.ColorDarkSlateGray),
-	)
-
-	iss.playerItems = render.CreateDrawingInstructions(func(v views.View) {
-		for y := range player.Inventory().Shape().Height() {
-			for x := range player.Inventory().Shape().Width() {
-				item := player.Inventory().ItemAt(x, y)
-				isHighlighted := x == iss.selectedInventorySlot.X() && y == iss.selectedInventorySlot.Y()
-
-				if item == nil {
-
-					if isHighlighted {
-						ui.CreateSingleLineUILabel(45+1+x*4, 5+1+y*2, "   ", tcell.StyleDefault.Background(tcell.ColorDarkSlateGray)).Draw(v)
-					}
-
-					continue
-				}
-
-				style := item.Type().Style()
-
-				if isHighlighted {
-					style = style.Background(tcell.ColorDarkSlateGray)
-				}
-
-				ui.CreateSingleLineUILabel(45+1+x*4, 5+y*2, fmt.Sprintf("%03d", item.Quantity()), style).Draw(v)
-				ui.CreateSingleLineUILabel(45+1+x*4, 5+1+y*2, item.Type().Icon(), style).Draw(v)
-			}
-		}
-	})
-
-	iss.selectedItem = render.CreateDrawingInstructions(func(v views.View) {
-		ui.CreateWindow(45, 14, 33, 8, "ITEM", tcell.StyleDefault).Draw(v)
-
-		item := player.Inventory().ItemAt(iss.selectedInventorySlot.XY())
-
-		if item == nil {
-			return
-		}
-
-		ui.CreateSingleLineUILabel(46, 15, fmt.Sprintf("Name: %v", item.Name()), tcell.StyleDefault).Draw(v)
-		ui.CreateSingleLineUILabel(46, 16, fmt.Sprintf("Desc: %v", item.Description()), tcell.StyleDefault).Draw(v)
-	})
-
-	iss.help = ui.CreateSingleLineUILabel(45, 22, "hjkl - move, x - drop, e - equip", tcell.StyleDefault)
+	iss.exitMenu = false
+	iss.inventoryMenu = menu.CreatePlayerInventoryMenu(43, 0, player.Inventory(), tcell.StyleDefault, tcell.StyleDefault.Background(tcell.ColorDarkSlateGray))
 
 	return iss
 }
@@ -190,27 +99,17 @@ func (iss *InventoryScreenState) OnTick(dt int64) GameState {
 			iss.selectedInventorySlot = iss.selectedInventorySlot.WithOffset(+1, 0)
 		}
 
-		iss.inventoryGrid.Highlight(iss.selectedInventorySlot)
+		iss.inventoryMenu.SelectSlot(iss.selectedInventorySlot.XY())
 		iss.moveInventorySlotDirection = model.DirectionNone
 	}
 
 	return iss
 }
 
-func (iss *InventoryScreenState) CollectDrawables() []render.Drawable {
+func (iss *InventoryScreenState) CollectDrawables() []engine.Drawable {
 	drawables := append(
 		iss.prevState.CollectDrawables(),
 		iss.inventoryMenu,
-		iss.armourLabel,
-		iss.armourGrid,
-		iss.leftHandLabel,
-		iss.leftHandBox,
-		iss.rightHandLabel,
-		iss.rightHandBox,
-		iss.inventoryGrid,
-		iss.playerItems,
-		iss.selectedItem,
-		iss.help,
 	)
 
 	return drawables

game/state/look_state.go

@@ -1,7 +1,7 @@
 package state
 
 import (
-	"mvvasilev/last_light/render"
+	"mvvasilev/last_light/engine"
 
 	"github.com/gdamore/tcell/v2"
 )
@@ -17,6 +17,6 @@ func (ls *LookState) OnTick(dt int64) GameState {
 	panic("not implemented") // TODO: Implement
 }
 
-func (ls *LookState) CollectDrawables() []render.Drawable {
+func (ls *LookState) CollectDrawables() []engine.Drawable {
 	panic("not implemented") // TODO: Implement
 }

game/state/main_menu_state.go

@@ -1,15 +1,15 @@
 package state
 
 import (
-	"mvvasilev/last_light/render"
-	"mvvasilev/last_light/ui"
+	"mvvasilev/last_light/engine"
+	"mvvasilev/last_light/game/ui"
 	"mvvasilev/last_light/util"
 
 	"github.com/gdamore/tcell/v2"
 )
 
 type MainMenuState struct {
-	menuTitle          *render.Raw
+	menuTitle          *engine.Raw
 	buttons            []*ui.UISimpleButton
 	currButtonSelected int
 
@@ -22,7 +22,7 @@ func NewMainMenuState() *MainMenuState {
 
 	highlightStyle := tcell.StyleDefault.Attributes(tcell.AttrBold)
 
-	state.menuTitle = render.CreateRawDrawable(
+	state.menuTitle = engine.CreateRawDrawable(
 		11, 1, tcell.StyleDefault.Attributes(tcell.AttrBold).Foreground(tcell.ColorYellow),
 		" |                   |         |     _)         |      |  ",
 		" |       _` |   __|  __|       |      |   _` |  __ \\   __|",
@@ -77,8 +77,8 @@ func (mms *MainMenuState) OnTick(dt int64) GameState {
 	return mms
 }
 
-func (mms *MainMenuState) CollectDrawables() []render.Drawable {
-	arr := make([]render.Drawable, 0)
+func (mms *MainMenuState) CollectDrawables() []engine.Drawable {
+	arr := make([]engine.Drawable, 0)
 
 	arr = append(arr, mms.menuTitle)
 

game/state/pause_game_state.go

@@ -1,8 +1,8 @@
 package state
 
 import (
-	"mvvasilev/last_light/render"
-	"mvvasilev/last_light/ui"
+	"mvvasilev/last_light/engine"
+	"mvvasilev/last_light/game/ui"
 	"mvvasilev/last_light/util"
 
 	"github.com/gdamore/tcell/v2"
@@ -26,7 +26,7 @@ func PauseGame(prevState PausableState) *PauseGameState {
 
 	highlightStyle := tcell.StyleDefault.Attributes(tcell.AttrBold)
 
-	s.pauseMenuWindow = ui.CreateWindow(int(render.TERMINAL_SIZE_WIDTH)/2-15, int(render.TERMINAL_SIZE_HEIGHT)/2-7, 30, 14, "PAUSED", tcell.StyleDefault)
+	s.pauseMenuWindow = ui.CreateWindow(int(engine.TERMINAL_SIZE_WIDTH)/2-15, int(engine.TERMINAL_SIZE_HEIGHT)/2-7, 30, 14, "PAUSED", tcell.StyleDefault)
 	s.buttons = make([]*ui.UISimpleButton, 0)
 	s.buttons = append(
 		s.buttons,
@@ -96,8 +96,8 @@ func (pg *PauseGameState) OnTick(dt int64) GameState {
 	return pg
 }
 
-func (pg *PauseGameState) CollectDrawables() []render.Drawable {
-	arr := make([]render.Drawable, 0)
+func (pg *PauseGameState) CollectDrawables() []engine.Drawable {
+	arr := make([]engine.Drawable, 0)
 
 	arr = append(arr, pg.prevState.CollectDrawables()...)
 

game/state/playing_state.go

@@ -2,9 +2,9 @@ package state
 
 import (
 	"math/rand"
+	"mvvasilev/last_light/engine"
 	"mvvasilev/last_light/game/model"
 	"mvvasilev/last_light/game/world"
-	"mvvasilev/last_light/render"
 	"mvvasilev/last_light/util"
 
 	"github.com/gdamore/tcell/v2"
@@ -16,7 +16,7 @@ type PlayingState struct {
 	entityMap *world.EntityMap
 	level     *world.MultilevelMap
 
-	viewport *render.Viewport
+	viewport *engine.Viewport
 
 	movePlayerDirection model.Direction
 	pauseGame           bool
@@ -51,7 +51,7 @@ func BeginPlayingState() *PlayingState {
 
 	s.entityMap.AddEntity(s.player, '@', tcell.StyleDefault)
 
-	s.viewport = render.CreateViewport(
+	s.viewport = engine.CreateViewport(
 		util.PositionAt(0, 0),
 		dungeonLevel.PlayerSpawnPoint(),
 		util.SizeOf(80, 24),
@@ -207,8 +207,8 @@ func (ps *PlayingState) OnTick(dt int64) GameState {
 	return ps
 }
 
-func (ps *PlayingState) CollectDrawables() []render.Drawable {
-	return render.Multidraw(render.CreateDrawingInstructions(func(v views.View) {
+func (ps *PlayingState) CollectDrawables() []engine.Drawable {
+	return engine.Multidraw(engine.CreateDrawingInstructions(func(v views.View) {
 		ps.viewport.DrawFromProvider(v, func(x, y int) (rune, tcell.Style) {
 			tile := ps.level.TileAt(x, y)
 

game/state/quit_state.go

@@ -1,7 +1,7 @@
 package state
 
 import (
-	"mvvasilev/last_light/render"
+	"mvvasilev/last_light/engine"
 
 	"github.com/gdamore/tcell/v2"
 )
@@ -17,6 +17,6 @@ func (q *QuitState) OnTick(dt int64) GameState {
 	return q
 }
 
-func (q *QuitState) CollectDrawables() []render.Drawable {
-	return render.Multidraw(nil)
+func (q *QuitState) CollectDrawables() []engine.Drawable {
+	return engine.Multidraw(nil)
 }

game/ui/border_button.go

@@ -1,7 +1,7 @@
 package ui
 
 import (
-	"mvvasilev/last_light/render"
+	"mvvasilev/last_light/engine"
 	"mvvasilev/last_light/util"
 
 	"github.com/gdamore/tcell/v2"
@@ -12,8 +12,8 @@ import (
 type UIBorderedButton struct {
 	id uuid.UUID
 
-	text   render.Text
-	border render.Rectangle
+	text   engine.Text
+	border engine.Rectangle
 
 	isSelected bool
 

game/ui/label.go

@@ -1,7 +1,7 @@
 package ui
 
 import (
-	"mvvasilev/last_light/render"
+	"mvvasilev/last_light/engine"
 	"mvvasilev/last_light/util"
 	"unicode/utf8"
 
@@ -12,14 +12,14 @@ import (
 
 type UILabel struct {
 	id   uuid.UUID
-	text *render.Text
+	text *engine.Text
 }
 
 func CreateUILabel(x, y int, width, height int, content string, style tcell.Style) *UILabel {
 	label := new(UILabel)
 
 	label.id = uuid.New()
-	label.text = render.CreateText(x, y, width, height, content, style)
+	label.text = engine.CreateText(x, y, width, height, content, style)
 
 	return label
 }
@@ -28,7 +28,7 @@ func CreateSingleLineUILabel(x, y int, content string, style tcell.Style) *UILab
 	label := new(UILabel)
 
 	label.id = uuid.New()
-	label.text = render.CreateText(x, y, int(utf8.RuneCountInString(content)), 1, content, style)
+	label.text = engine.CreateText(x, y, int(utf8.RuneCountInString(content)), 1, content, style)
 
 	return label
 }
@@ -38,7 +38,7 @@ func (t *UILabel) UniqueId() uuid.UUID {
 }
 
 func (t *UILabel) MoveTo(x int, y int) {
-	t.text = render.CreateText(x, y, int(t.text.Size().Width()), int(t.Size().Height()), t.text.Content(), t.text.Style())
+	t.text = engine.CreateText(x, y, int(t.text.Size().Width()), int(t.Size().Height()), t.text.Content(), t.text.Style())
 }
 
 func (t *UILabel) Position() util.Position {

game/ui/menu/player_inventory_menu.go

@@ -0,0 +1,175 @@
+package menu
+
+import (
+	"fmt"
+	"mvvasilev/last_light/engine"
+	"mvvasilev/last_light/game/model"
+	"mvvasilev/last_light/game/ui"
+	"mvvasilev/last_light/util"
+
+	"github.com/gdamore/tcell/v2"
+	"github.com/gdamore/tcell/v2/views"
+	"github.com/google/uuid"
+)
+
+type PlayerInventoryMenu struct {
+	inventory *model.EquippedInventory
+
+	inventoryMenu  *ui.UIWindow
+	armourLabel    *ui.UILabel
+	armourGrid     *engine.Grid
+	leftHandLabel  *ui.UILabel
+	leftHandBox    engine.Rectangle
+	rightHandLabel *ui.UILabel
+	rightHandBox   engine.Rectangle
+	inventoryGrid  *engine.Grid
+	playerItems    *engine.ArbitraryDrawable
+	selectedItem   *engine.ArbitraryDrawable
+	help           *ui.UILabel
+
+	selectedInventorySlot util.Position
+}
+
+func CreatePlayerInventoryMenu(x, y int, playerInventory *model.EquippedInventory, style tcell.Style, highlightStyle tcell.Style) *PlayerInventoryMenu {
+	menu := new(PlayerInventoryMenu)
+
+	menu.inventory = playerInventory
+
+	menu.inventoryMenu = ui.CreateWindow(x, y, 37, 24, "INVENTORY", style)
+
+	menu.armourLabel = ui.CreateSingleLineUILabel(x+15, y+1, "ARMOUR", style)
+
+	menu.armourGrid = engine.CreateGrid(
+		x+10, y+2, 3, 1, 4, 1, '┌', '─', '┬', '┐', '│', ' ', '│', '│', '├', '─', '┼', '┤', '└', '─', '┴', '┘', style, highlightStyle, //style.Background(tcell.ColorDarkSlateGray),
+	)
+
+	menu.leftHandLabel = ui.CreateUILabel(
+		x+3, y+1, 5, 1, "OFF", style,
+	)
+
+	menu.leftHandBox = engine.CreateRectangle(
+		x+2, y+2, 5, 3,
+		'┌', '─', '┐',
+		'│', ' ', '│',
+		'└', '─', '┘',
+		false, true,
+		style,
+	)
+
+	menu.rightHandLabel = ui.CreateUILabel(
+		x+31, y+1, 5, 1, "DOM", style,
+	)
+
+	menu.rightHandBox = engine.CreateRectangle(
+		x+30, y+2, 5, 3,
+		'┌', '─', '┐',
+		'│', ' ', '│',
+		'└', '─', '┘',
+		false, true,
+		style,
+	)
+
+	menu.inventoryGrid = engine.CreateGrid(
+		x+2, y+5, 3, 1, 8, 4, '┌', '─', '┬', '┐', '│', ' ', '│', '│', '├', '─', '┼', '┤', '└', '─', '┴', '┘', style, highlightStyle,
+	)
+
+	menu.playerItems = engine.CreateDrawingInstructions(func(v views.View) {
+		for y := range playerInventory.Shape().Height() {
+			for x := range playerInventory.Shape().Width() {
+				item := playerInventory.ItemAt(x, y)
+				isHighlighted := x == menu.selectedInventorySlot.X() && y == menu.selectedInventorySlot.Y()
+
+				if item == nil {
+
+					if isHighlighted {
+						ui.CreateSingleLineUILabel(
+							menu.inventoryGrid.Position().X()+1+x*4,
+							menu.inventoryGrid.Position().Y()+1+y*2,
+							"   ",
+							highlightStyle,
+						).Draw(v)
+					}
+
+					continue
+				}
+
+				style := item.Type().Style()
+
+				if isHighlighted {
+					style = highlightStyle
+				}
+
+				ui.CreateSingleLineUILabel(
+					menu.inventoryGrid.Position().X()+1+x*4,
+					menu.inventoryGrid.Position().Y()+y*2,
+					fmt.Sprintf("%03d", item.Quantity()),
+					style,
+				).Draw(v)
+
+				ui.CreateSingleLineUILabel(
+					menu.inventoryGrid.Position().X()+1+x*4,
+					menu.inventoryGrid.Position().Y()+1+y*2,
+					item.Type().Icon(),
+					style,
+				).Draw(v)
+			}
+		}
+	})
+
+	menu.selectedItem = engine.CreateDrawingInstructions(func(v views.View) {
+		ui.CreateWindow(x+2, y+14, 33, 8, "ITEM", style).Draw(v)
+
+		item := playerInventory.ItemAt(menu.selectedInventorySlot.XY())
+
+		if item == nil {
+			return
+		}
+
+		ui.CreateSingleLineUILabel(x+3, y+15, fmt.Sprintf("Name: %v", item.Name()), style).Draw(v)
+		ui.CreateSingleLineUILabel(x+3, y+16, fmt.Sprintf("Desc: %v", item.Description()), style).Draw(v)
+	})
+
+	menu.help = ui.CreateSingleLineUILabel(x+2, y+22, "hjkl - move, x - drop, e - equip", style)
+
+	return menu
+}
+
+func (pim *PlayerInventoryMenu) MoveTo(x int, y int) {
+
+}
+
+func (pim *PlayerInventoryMenu) Position() util.Position {
+	return pim.inventoryMenu.Position()
+}
+
+func (pim *PlayerInventoryMenu) Size() util.Size {
+	return pim.inventoryMenu.Size()
+}
+
+func (pim *PlayerInventoryMenu) Input(e *tcell.EventKey) {
+
+}
+
+func (pim *PlayerInventoryMenu) UniqueId() uuid.UUID {
+	return pim.inventoryMenu.UniqueId()
+}
+
+func (pim *PlayerInventoryMenu) SelectSlot(x, y int) {
+	pim.inventoryGrid.Unhighlight()
+	pim.selectedInventorySlot = util.PositionAt(x, y)
+	pim.inventoryGrid.Highlight(pim.selectedInventorySlot)
+}
+
+func (pim *PlayerInventoryMenu) Draw(v views.View) {
+	pim.inventoryMenu.Draw(v)
+	pim.armourLabel.Draw(v)
+	pim.armourGrid.Draw(v)
+	pim.leftHandLabel.Draw(v)
+	pim.leftHandBox.Draw(v)
+	pim.rightHandLabel.Draw(v)
+	pim.rightHandBox.Draw(v)
+	pim.inventoryGrid.Draw(v)
+	pim.playerItems.Draw(v)
+	pim.selectedItem.Draw(v)
+	pim.help.Draw(v)
+}

game/ui/simple_button.go

@@ -1,7 +1,7 @@
 package ui
 
 import (
-	"mvvasilev/last_light/render"
+	"mvvasilev/last_light/engine"
 	"mvvasilev/last_light/util"
 	"strings"
 	"unicode/utf8"
@@ -14,7 +14,7 @@ import (
 type UISimpleButton struct {
 	id                 uuid.UUID
 	isHighlighted      bool
-	text               *render.Text
+	text               *engine.Text
 	selectHandler      func()
 	unhighlightedStyle tcell.Style
 	highlightedStyle   tcell.Style
@@ -24,7 +24,7 @@ func CreateSimpleButton(x, y int, text string, unhighlightedStyle, highlightedSt
 	sb := new(UISimpleButton)
 
 	sb.id = uuid.New()
-	sb.text = render.CreateText(x, y, int(utf8.RuneCountInString(text)), 1, text, unhighlightedStyle)
+	sb.text = engine.CreateText(x, y, int(utf8.RuneCountInString(text)), 1, text, unhighlightedStyle)
 	sb.isHighlighted = false
 	sb.selectHandler = onSelect
 	sb.highlightedStyle = highlightedStyle
@@ -50,7 +50,7 @@ func (sb *UISimpleButton) Highlight() {
 
 	newContent := "[ " + sb.text.Content() + " ]"
 
-	sb.text = render.CreateText(
+	sb.text = engine.CreateText(
 		int(sb.Position().X()-2), int(sb.Position().Y()),
 		int(utf8.RuneCountInString(newContent)), 1,
 		newContent,
@@ -65,7 +65,7 @@ func (sb *UISimpleButton) Unhighlight() {
 	content = strings.Trim(content, "[ ")
 	contentLen := utf8.RuneCountInString(content)
 
-	sb.text = render.CreateText(
+	sb.text = engine.CreateText(
 		int(sb.Position().X()+2), int(sb.Position().Y()),
 		int(contentLen), 1,
 		content,
@@ -82,7 +82,7 @@ func (sb *UISimpleButton) UniqueId() uuid.UUID {
 }
 
 func (sb *UISimpleButton) MoveTo(x int, y int) {
-	sb.text = render.CreateText(x, y, int(utf8.RuneCountInString(sb.text.Content())), 1, sb.text.Content(), sb.highlightedStyle)
+	sb.text = engine.CreateText(x, y, int(utf8.RuneCountInString(sb.text.Content())), 1, sb.text.Content(), sb.highlightedStyle)
 }
 
 func (sb *UISimpleButton) Position() util.Position {

game/ui/ui.go

@@ -1,7 +1,7 @@
 package ui
 
 import (
-	"mvvasilev/last_light/render"
+	"mvvasilev/last_light/engine"
 	"mvvasilev/last_light/util"
 
 	"github.com/gdamore/tcell/v2"
@@ -13,7 +13,7 @@ type UIElement interface {
 	Size() util.Size
 	Input(e *tcell.EventKey)
 
-	render.Drawable
+	engine.Drawable
 }
 
 type UIHighlightableElement interface {

game/ui/window.go

@@ -1,7 +1,7 @@
 package ui
 
 import (
-	"mvvasilev/last_light/render"
+	"mvvasilev/last_light/engine"
 	"mvvasilev/last_light/util"
 	"unicode/utf8"
 
@@ -13,8 +13,8 @@ import (
 type UIWindow struct {
 	id uuid.UUID
 
-	title *render.Text
-	box   render.Rectangle
+	title *engine.Text
+	box   engine.Rectangle
 }
 
 func CreateWindow(x, y, width, height int, title string, style tcell.Style) *UIWindow {
@@ -24,9 +24,9 @@ func CreateWindow(x, y, width, height int, title string, style tcell.Style) *UIW
 
 	titlePos := (width / 2) - int(titleLen/2)
 
-	w.title = render.CreateText(x+titlePos, y, int(titleLen), 1, title, style)
+	w.title = engine.CreateText(x+titlePos, y, int(titleLen), 1, title, style)
 
-	w.box = render.CreateRectangle(
+	w.box = engine.CreateRectangle(
 		x, y, width, height,
 		'┌', '─', '┐',
 		'│', ' ', '│',

game/world/dungeon.go

@@ -1,15 +1,11 @@
 package world
 
-import "mvvasilev/last_light/game/model"
-
 type dungeonLevel struct {
-	groundLevel Map
+	groundLevel *Map
 	entityLevel *EntityMap
 	itemLevel   *Map
 }
 
 type Dungeon struct {
-	player *model.Player
-
 	levels []*dungeonLevel
 }