Updated gitignore.

Lots of comments and changes in UI code in general.

.gitignore

@@ -111,4 +111,4 @@ flycheck_*.el
 # Swap Files #
 .*.kate-swp
 .swp.*
-
+.kateproject*

main.lua

@@ -87,13 +87,14 @@ function love.draw()
     Fade:draw()
 
     if Debug then
-        love.graphics.setColor(0, 0, 0)
-        love.graphics.rectangle('fill', 0, 0, 140, 50)
-        love.graphics.setColor()
+        -- love.graphics.setColor(0, 0, 0)
+        -- love.graphics.rectangle('fill', 0, 0, 140, 50)
+        love.graphics.setColor(255, 250, 0)
         love.graphics.print(string.format('OS: %s', love.system.getOS()), 5, 5)
         love.graphics.print(string.format('Love version: %s', love.getVersion()), 5, 15)
         love.graphics.print(string.format('Memory usage: %s KiB', love.system.getMemUsage()), 5, 25)
         love.graphics.print(string.format('FPS: %.2f', 1.0 / love.timer.getAverageDelta()), 5, 35)
+        love.graphics.setColor()
     end
 end
 

src/graphics/drawable.lua

@@ -8,6 +8,7 @@ local make_class = require 'src.utils.classes'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class Drawable
 local Drawable = make_class()
 
 

src/gstates/menu.lua

@@ -5,6 +5,7 @@
 local love           = require 'love'
 local assets         = require 'src.utils.asstmngr'
 local sound_manager  = require 'src.sound.sndmngr'
+local dialog_manager = require 'src.ui.dlgmngr'
 local make_class     = require 'src.utils.classes'
 local constants      = require 'src.gstates.menus.const'
 local GameState      = require 'src.gstates.gstate'
@@ -63,6 +64,7 @@ function Menu:update(dt)
 
     if self.all_loaded then
         self.menus[self.current_menu]:update(dt)
+        dialog_manager:update(dt)
 
         -- If the game state changed then trigger a fade out.
         if self.next_menu ~= self.current_menu and self.fade.done then
@@ -101,6 +103,7 @@ end
 function Menu:draw()
     if self.all_loaded then
         self.menus[self.current_menu]:draw()
+        dialog_manager:draw()
         self.cursor:draw()
         self.fade:draw()
     else
@@ -108,23 +111,69 @@ function Menu:draw()
     end
 end
 
+function Menu:keypressed(key, code, isrepeat)
+    -- Send events to the active game state if there is no fade active.
+    if Fade.done then
+        if dialog_manager:empty() then
+            self.menus[self.current_menu]:keypressed(key, code, isrepeat)
+        else
+            dialog_manager:keypressed(key, code, isrepeat)
+        end
+    end
+end
+
+
+function Menu:keyreleased(key, code)
+    -- Send events to the active game state if there is no fade active.
+    if Fade.done then
+        if dialog_manager:empty() then
+            self.menus[self.current_menu]:keyreleased(key, code)
+        else
+            dialog_manager:keyreleased(key, code)
+        end
+    end
+end
+
+
+function Menu:textinput(text)
+    -- Send events to the active game state if there is no fade active.
+    if Fade.done then
+        if dialog_manager:empty() then
+            self.menus[self.current_menu]:textinput(text)
+        else
+            dialog_manager:textinput(text)
+        end
+    end
+end
 
 function Menu:mousemoved(x, y, dx, dy)
+    if dialog_manager:empty() then
         self.menus[self.current_menu]:mousemoved(x, y, dx, dy)
+    else
+        dialog_manager:mousemoved(x, y, dx, dy)
+    end
     self.cursor:mousemoved(x, y, dx, dy)
 end
 
 
 function Menu:mousepressed(x, y, btn)
     if self.fade.done then
+        if dialog_manager:empty() then
             self.menus[self.current_menu]:mousepressed(x, y, btn)
+        else
+            dialog_manager:mousepressed(x, y, btn)
+        end
     end
 end
 
 
 function Menu:mousereleased(x, y, btn)
     if self.fade.done then
+        if dialog_manager:empty() then
             self.menus[self.current_menu]:mousereleased(x, y, btn)
+        else
+            dialog_manager:mousereleased(x, y, btn)
+        end
     end
 end
 

src/gstates/menus/options.lua

@@ -6,13 +6,17 @@ local make_class    = require 'src.utils.classes'
 local constants     = require 'src.gstates.menus.const'
 local settings      = require 'src.utils.settings'
 local sound_manager = require 'src.sound.sndmngr'
+local assets        = require 'src.utils.asstmngr'
 local BaseMenu      = require 'src.gstates.menus.base'
 local Color         = require 'src.utils.color'
 local HBox          = require 'src.ui.hbox'
 local Label         = require 'src.ui.label'
 local TextButton    = require 'src.ui.textbtn'
+local TextInput     = require 'src.ui.textinpt'
 local Checkbox      = require 'src.ui.chkbox'
 local Bar           = require 'src.ui.bar'
+local Dialog        = require 'src.ui.dialog'
+local Font          = require 'src.ui.font'
 
 
 ------------------------------------------------------------------------------
@@ -29,11 +33,15 @@ local OptionsMenu = make_class(BaseMenu)
 function OptionsMenu:_init(parent, title_font, button_font)
     BaseMenu._init(self, parent, "Options Menu", constants.OPTIONS_MENU, 'imgs/cpu.png')
 
+    self.subtitle_font = Font('fonts/BBrick.ttf', 25)
+
     -- Create UI elements of the menu.
     self.container:add(Label(nil, nil, 'Options', title_font, Color(215, 0, 0), true))
 
+    -- Permadeath checkbox.
     local box = HBox()
-    box:add(Label(nil, nil, 'Enable Permadeath', button_font))
+
+    box:add(Label(nil, nil, 'Enable Permadeath: ', button_font))
     box:add(Checkbox(
         function()
             settings.permadeath = not settings.permadeath
@@ -43,14 +51,77 @@ function OptionsMenu:_init(parent, title_font, button_font)
         end,
         17,
         15))
+
     self.container:add(box)
 
-    box = HBox()
-    box:add(Label(nil, nil, 'Controls', button_font))
-    self.container:add(box)
+    -- Control binding dialog.
+    local dlg = Dialog('imgs/tchcmp1.png', nil, 15, nil, nil, button_font)
+
+    dlg:add(Label(nil, nil, 'Set Controls', self.subtitle_font, Color(215, 0, 0), true))
 
     box = HBox()
-    box:add(Label(nil, nil, 'Sound Volume', button_font))
+    box.spacing = 30
+    -- text, font, x, y, callback, value, float, base_col, sel_color, press_col
+    box:add(TextInput('Step Forw.',
+                      button_font,
+                      nil, nil,
+                      function(v) settings.forward = v end,
+                      function() return settings.forward end))
+    box:add(TextInput('Step Back',
+                      button_font,
+                      nil, nil,
+                      function(v) settings.backward = v end,
+                      function() return settings.backward end))
+
+    dlg:add(box)
+
+    box = HBox()
+    box.spacing = 40
+    box:add(TextInput('Step Left',
+                      button_font,
+                      nil, nil,
+                      function(v) settings.stepleft = v end,
+                      function() return settings.stepleft end))
+    box:add(TextInput('Step Right',
+                      button_font,
+                      nil, nil,
+                      function(v) settings.stepright = v end,
+                      function() return settings.stepright end))
+
+    dlg:add(box)
+
+    box = HBox()
+    box.spacing = 42
+    box:add(TextInput('Turn Left',
+                      button_font,
+                      nil, nil,
+                      function(v) settings.turnleft = v end,
+                      function() return settings.turnleft end))
+    box:add(TextInput('Turn Right',
+                      button_font,
+                      nil, nil,
+                      function(v) settings.turnright = v end,
+                      function() return settings.turnright end))
+
+    dlg:add(box)
+
+    box = HBox()
+
+    box:add(TextButton(
+        'Set Controls',
+        button_font,
+        nil,
+        nil,
+        function()
+            dlg:show()
+        end))
+
+    self.container:add(box)
+
+    -- Sound volume bar.
+    box = HBox()
+
+    box:add(Label(nil, nil, 'Sound Volume: ', button_font))
     box:add(Bar(
         function(v)
             settings.soundvol = math.ceil(v)
@@ -59,12 +130,15 @@ function OptionsMenu:_init(parent, title_font, button_font)
             return settings.soundvol
         end,
         0, 100,
-        175, 15))
+        170, 15))
+
     self.container:add(box)
 
+    -- Music volume bar.
     box = HBox()
     box.spacing = 13
-    box:add(Label(nil, nil, 'Music Volume', button_font))
+
+    box:add(Label(nil, nil, 'Music Volume: ', button_font))
     box:add(Bar(
         function(v)
             settings.musicvol = math.ceil(v)
@@ -74,9 +148,11 @@ function OptionsMenu:_init(parent, title_font, button_font)
             return settings.musicvol
         end,
         0, 100,
-        175, 15))
+        170, 15))
+
     self.container:add(box)
 
+    -- Back button.
     box = HBox()
     box:add(TextButton(
         'Go Back',
@@ -88,6 +164,10 @@ function OptionsMenu:_init(parent, title_font, button_font)
             parent.next_menu = constants.MAIN_MENU
         end))
     self.container:add(box)
+
+    -- Register the dialog with the asset manager.
+    assets:register(self.name, dlg)
+    assets:register(self.name, self.subtitle_font)
 end
 
 

src/ui/bar.lua

@@ -21,7 +21,7 @@ local Bar = make_class(UIElement)
 ------------------------------------------------------------------------------
 
 function Bar:_init(callback, val_fn, min, max, w, h, color, sel_color, press_col, float, x, y)
-    UIElement._init(self, x, y, float)
+    UIElement._init(self, x, y, float, false)
     self.callback  = callback
     self.val_fn    = val_fn
     self.min       = min
@@ -44,17 +44,25 @@ end
 function Bar:draw()
     local color = self.callback == nil and self.disbl_col or ((self.pressed and self.press_col) or ((self.selected and self.sel_color) or self.base_col))
 
+    -- Convert the variable's value to the [0, 1] space.
     local v = (self.val_fn() + math.abs(self.min)) / (self.max + math.abs(self.min))
 
     love.graphics.setColor(color.r, color.g, color.b)
+
+    -- Render the bar's outline.
     love.graphics.rectangle('line', self.x, self.y, self.w, self.h)
+
+    -- Render the bar's content using the [0, 1] value as a proportion of the bar's width.
     love.graphics.rectangle('fill', self.x, self.y, self.w * v, self.h)
     love.graphics.setColor()
 end
 
 
 function Bar:_mouse2bar(x)
+    -- Take the x coord to the [0, 1] space, with clamping.
     local v = math.max(math.min(((x - self.x) / self.w), 1.0), 0.0)
+
+    -- Convert the value to a horizontal bar coordinate and return it.
     return (v * (self.max + math.abs(self.min))) - self.min
 end
 

src/ui/button.lua

@@ -11,6 +11,7 @@ local UIElement  = require 'src.ui.element'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class Button: UIElement
 local Button = make_class(UIElement)
 
 
@@ -18,8 +19,12 @@ local Button = make_class(UIElement)
 -- Class methods
 ------------------------------------------------------------------------------
 
+---@param x number
+---@param y number
+---@param callback function
+---@param float boolean
 function Button:_init(x, y, callback, float)
-    UIElement._init(self, x, y, float)
+    UIElement._init(self, x, y, float, false)
     self.selected    = false
     self.pressed     = false
     self.was_pressed = false

src/ui/dialog.lua

@@ -0,0 +1,117 @@
+------------------------------------------------------------------------------
+-- Imports
+------------------------------------------------------------------------------
+
+local love           = require 'love'
+local make_class     = require 'src.utils.classes'
+local dialog_manager = require 'src.ui.dlgmngr'
+local VBox           = require 'src.ui.vbox'
+local Sprite         = require 'src.graphics.sprite'
+local TextButton     = require 'src.ui.textbtn'
+local HBox           = require 'src.ui.hbox'
+
+
+------------------------------------------------------------------------------
+-- Class definitions
+------------------------------------------------------------------------------
+
+local Dialog = make_class(VBox)
+
+
+------------------------------------------------------------------------------
+-- Class methods
+------------------------------------------------------------------------------
+
+function Dialog:_init(bckg, spacing, padding, close_btn, accept_btn, font)
+    VBox._init(self, nil, nil, nil, nil, spacing, false)
+    self.spacing    = spacing ~= nil and spacing or 10
+    self.padding    = padding ~= nil and padding or 15
+    self.background = Sprite(bckg)
+    self.shown      = false
+
+    local close = nil
+
+    if close_btn ~= nil then
+        close = close_btn
+    else
+        close = TextButton(
+            'Close',
+            font,
+            nil,
+            nil,
+            function()
+                self:hide()
+            end)
+    end
+
+    local accept = nil
+    if accept_btn ~= nil then accept = accept_btn end
+
+    -- Create a container for the close and accept button and add them.
+    local box = HBox(nil, nil, nil, nil, 10, true)
+    box:add(close)
+
+    if accept ~= nil then box:add(accept) end
+
+    self.elements[9001] = box
+end
+
+
+function Dialog:add(element)
+    table.insert(self.elements, element)
+end
+
+
+function Dialog:load()
+    self.background:load()
+    self:set_dimensions()
+    VBox.load(self)
+end
+
+
+function Dialog:set_dimensions()
+    self.w = self.background.sprite:getWidth()
+    self.h = self.background.sprite:getHeight()
+
+    -- Center the dialog on the screen.
+    self.x = (320 - self.w) / 2
+    self.y = (200 - self.h) / 2
+
+    self.background.x = self.x
+    self.background.y = self.y
+
+    -- Add padding.
+    self.x = self.x + self.padding
+    self.y = self.y + self.padding / 2
+end
+
+
+function Dialog:draw()
+    love.graphics.setColor(0, 0, 0)
+    love.graphics.rectangle('line', self.x - self.padding - 1, self.y - (self.padding / 2) - 1, self.w + 2, self.h + 2)
+    love.graphics.setColor()
+
+    self.background:draw()
+    VBox.draw(self)
+end
+
+
+function Dialog:show()
+    if not self.shown then
+        dialog_manager:add(self)
+        self.shown = true
+    end
+end
+
+
+function Dialog:hide()
+    dialog_manager:remove(self)
+    self.shown = false
+end
+
+
+------------------------------------------------------------------------------
+-- Module return
+------------------------------------------------------------------------------
+
+return Dialog

src/ui/dlgmngr.lua

@@ -0,0 +1,104 @@
+------------------------------------------------------------------------------
+-- Imports
+------------------------------------------------------------------------------
+
+local make_class = require 'src.utils.classes'
+local Drawable   = require 'src.graphics.drawable'
+
+
+------------------------------------------------------------------------------
+-- Class definitions
+------------------------------------------------------------------------------
+
+local DialogManager = make_class(Drawable)
+
+
+------------------------------------------------------------------------------
+-- Class methods
+------------------------------------------------------------------------------
+
+function DialogManager:_init()
+    Drawable._init(self)
+    self.dialogs = {}
+    self.count   = 0
+end
+
+
+function DialogManager:add(dialog)
+    self.dialogs[dialog] = true
+    self.count           = self.count + 1
+end
+
+
+function DialogManager:remove(dialog)
+    self.dialogs[dialog] = nil
+    self.count           = math.max(self.count - 1, 0)
+end
+
+
+function DialogManager:empty()
+    return self.count == 0
+end
+
+
+function DialogManager:update(dt)
+    for d, _ in pairs(self.dialogs) do
+        d:update(dt)
+    end
+end
+
+
+function DialogManager:draw()
+    for d, _ in pairs(self.dialogs) do
+        d:draw()
+    end
+end
+
+
+function DialogManager:keypressed(key, code, isrepeat)
+    for d, _ in pairs(self.dialogs) do
+        d:keypressed(key, code, isrepeat)
+    end
+end
+
+
+function DialogManager:textinput(text)
+    for d, _ in pairs(self.dialogs) do
+        d:textinput(text)
+    end
+end
+
+
+function DialogManager:keyreleased(key, code)
+    for d, _ in pairs(self.dialogs) do
+        d:keyreleased(key, code)
+    end
+end
+
+
+function DialogManager:mousemoved(x, y, dx, dy)
+    for d, _ in pairs(self.dialogs) do
+        d:mousemoved(x, y, dx, dy)
+    end
+end
+
+
+function DialogManager:mousepressed(x, y, btn)
+    for d, _ in pairs(self.dialogs) do
+        d:mousepressed(x, y, btn)
+    end
+end
+
+
+function DialogManager:mousereleased(x, y, btn)
+    for d, _ in pairs(self.dialogs) do
+        d:mousereleased(x, y, btn)
+    end
+end
+
+
+------------------------------------------------------------------------------
+-- Module return
+------------------------------------------------------------------------------
+
+return DialogManager()

src/ui/element.lua

@@ -6,11 +6,18 @@ local make_class = require 'src.utils.classes'
 local Asset      = require 'src.utils.asset'
 local Drawable   = require 'src.graphics.drawable'
 
+------------------------------------------------------------------------------
+-- Class definitions
+------------------------------------------------------------------------------
+
+local focused_element = nil
+
 
 ------------------------------------------------------------------------------
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class UIElement: Drawable, Asset
 local UIElement = make_class(Drawable, Asset)
 
 
@@ -18,13 +25,18 @@ local UIElement = make_class(Drawable, Asset)
 -- Class methods
 ------------------------------------------------------------------------------
 
-function UIElement:_init(x, y, float)
+---@param x integer
+---@param y integer
+---@param float boolean
+---@param focusable boolean
+function UIElement:_init(x, y, float, focusable)
     Asset._init(self)
     self.x           = x
     self.y           = y
     self.w           = nil
     self.h           = nil
     self.float_right = float and float or false
+    self.focusable   = focusable ~= nil and focusable or false
 end
 
 
@@ -34,7 +46,6 @@ function UIElement:set_dimensions()
 end
 
 
-
 function UIElement:load()
 end
 
@@ -48,6 +59,24 @@ function UIElement:is_loaded()
 end
 
 
+function UIElement:focus()
+    if self.focusable then
+        focused_element = self
+    end
+end
+
+
+function UIElement:blur()
+    if self.focusable and focused_element == self then
+        focused_element = nil
+    end
+end
+
+
+function UIElement:is_focused()
+    return self.focusable and focused_element == self
+end
+
 ------------------------------------------------------------------------------
 -- Module return
 ------------------------------------------------------------------------------

src/ui/font.lua

@@ -10,6 +10,7 @@ local Asset      = require 'src.utils.asset'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class Font: Asset
 -- Font is a simple wrapper around Löve's own Font class to allow for
 -- easy loading/unloading and automatically checking if it's is valid
 -- before using it.
@@ -20,6 +21,8 @@ local Font = make_class(Asset)
 -- Class methods
 ------------------------------------------------------------------------------
 
+---@param file_name string
+---@param size number
 function Font:_init(file_name, size)
     self.file_name = string.format('assets/%s', file_name)
     self.size = (size ~= nil and size) or 20

src/ui/hbox.lua

@@ -10,6 +10,7 @@ local Layout     = require 'src.ui.layout'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class HBox: Layout
 local HBox = make_class(Layout)
 
 
@@ -17,8 +18,8 @@ local HBox = make_class(Layout)
 -- Class methods
 ------------------------------------------------------------------------------
 
-function HBox:_init(x, y, w, h, spacing)
-    Layout._init(self, x, y, w, h, spacing)
+function HBox:_init(x, y, w, h, spacing, float)
+    Layout._init(self, x, y, w, h, spacing, float)
 end
 
 

src/ui/label.lua

@@ -12,6 +12,7 @@ local Color      = require 'src.utils.color'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class Label: UIElement
 local Label = make_class(UIElement)
 
 
@@ -19,8 +20,14 @@ local Label = make_class(UIElement)
 -- Class methods
 ------------------------------------------------------------------------------
 
+---@param x number
+---@param y number
+---@param text string
+---@param font Font
+---@param color Color
+---@param float boolean
 function Label:_init(x, y, text, font, color, float)
-    UIElement._init(self, x, y, float)
+    UIElement._init(self, x, y, float, false)
     self.text  = text
     self.font  = font
     self.color = color ~= nil and color or Color(255, 255, 255)
@@ -34,9 +41,7 @@ end
 
 
 function Label:load()
-    if not self.font:is_loaded() then
     self.font:load()
-    end
 
     -- If the label's size has not been computed then do it.
     if self.w == nil or self.h == nil then self:set_dimensions() end

src/ui/layout.lua

@@ -10,6 +10,7 @@ local UIElement  = require 'src.ui.element'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class Layout: UIElement
 local Layout = make_class(UIElement)
 
 
@@ -18,7 +19,7 @@ local Layout = make_class(UIElement)
 ------------------------------------------------------------------------------
 
 function Layout:_init(x, y, w, h, spacing, float)
-    UIElement._init(self, x, y, float)
+    UIElement._init(self, x, y, float, false)
     self.x        = x ~= nil and x or 0
     self.y        = y ~= nil and y or 0
     self.w        = w
@@ -68,6 +69,27 @@ function Layout:draw()
 end
 
 
+function Layout:keypressed(key, code, isrepeat)
+    for _, v in pairs(self.elements) do
+        v:keypressed(key, code, isrepeat)
+    end
+end
+
+
+function Layout:textinput(text)
+    for _, v in pairs(self.elements) do
+        v:textinput(text)
+    end
+end
+
+
+function Layout:keyreleased(key, code)
+    for _, v in pairs(self.elements) do
+        v:keyreleased(key, code)
+    end
+end
+
+
 function Layout:mousemoved(x, y, dx, dy)
     for _, v in pairs(self.elements) do
         v:mousemoved(x, y, dx, dy)

src/ui/textinpt.lua

@@ -0,0 +1,118 @@
+------------------------------------------------------------------------------
+-- Imports
+------------------------------------------------------------------------------
+
+local love       = require 'love'
+local make_class = require 'src.utils.classes'
+local collisions = require 'src.utils.colls'
+local UIElement  = require 'src.ui.element'
+local Color      = require 'src.utils.color'
+
+
+------------------------------------------------------------------------------
+-- Class definitions
+------------------------------------------------------------------------------
+
+---@class CharInput: UIElement
+local TextInput = make_class(UIElement)
+
+
+------------------------------------------------------------------------------
+-- Class methods
+------------------------------------------------------------------------------
+
+---@param text string
+---@param font Font
+---@param x number
+---@param y number
+---@param callback function
+---@param value function
+---@param float boolean
+---@param base_col Color
+---@param sel_color Color
+---@param press_col Color
+function TextInput:_init(text, font, x, y, callback, value, float, base_col, sel_color, press_col)
+    UIElement._init(self, x, y, float, true)
+    self.callback  = callback
+    self.value     = value
+    self.font      = font
+    self.text      = text
+    self.base_col  = base_col  ~= nil and base_col  or Color(255, 255, 255)
+    self.sel_color = sel_color ~= nil and sel_color or Color(215, 0, 0)
+    self.press_col = press_col ~= nil and press_col or Color(99, 99, 139)
+    self.disbl_col = Color(95, 63, 75)
+    self.selected  = false
+    self.pressed   = false
+end
+
+
+function TextInput:load()
+    self.font:load()
+
+    -- If the label's size has not been computed then do it.
+    if self.w == nil or self.h == nil then self:set_dimensions() end
+end
+
+
+function TextInput:unload()
+    self.font:unload()
+end
+
+
+function TextInput:is_loaded()
+    return self.font:is_loaded() and self.w ~= nil and self.h ~= nil
+end
+
+
+function TextInput:set_dimensions()
+    self.w = self.font:get_width(self.text .. 'm')
+    self.h = self.font:get_height(self.text)
+end
+
+
+function TextInput:draw()
+    local color = self.callback == nil and self.disbl_col or (((self.pressed or self:is_focused()) and self.press_col) or ((self.selected and self.sel_color) or self.base_col))
+
+    love.graphics.setColor(color.r, color.g, color.b)
+    self.font:set()
+
+    if self:is_focused() then
+        love.graphics.print(self.text .. ': ?', self.x, self.y)
+    else
+        love.graphics.print(self.text .. ': ' .. self.value(), self.x, self.y)
+    end
+
+    self.font:unset()
+    love.graphics.setColor()
+end
+
+
+function TextInput:mousemoved(x, y)
+    -- Select if the pointer is inside the button's bounding rect.
+    self.selected = collisions.point_in_square(x, y, self.x, self.y, self.w, self.h)
+end
+
+
+function TextInput:mousepressed(_, _, btn)
+    -- If the pointer was inside the button when it was pressed then mark the button as pressed.
+    if btn == 0 and self.selected then
+        self:focus()
+    end
+end
+
+
+function TextInput:keypressed(key)
+    if self:is_focused() then
+        if #key == 1 then
+            if self.callback ~= nil then self.callback(key) end
+            self:blur()
+        end
+    end
+end
+
+
+------------------------------------------------------------------------------
+-- Module return
+------------------------------------------------------------------------------
+
+return TextInput

src/ui/vbox.lua

@@ -10,6 +10,7 @@ local Layout     = require 'src.ui.layout'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class VBox: Layout
 local VBox = make_class(Layout)
 
 
@@ -17,8 +18,8 @@ local VBox = make_class(Layout)
 -- Class methods
 ------------------------------------------------------------------------------
 
-function VBox:_init(x, y, w, h, spacing)
-    Layout._init(self, x, y, w, h, spacing)
+function VBox:_init(x, y, w, h, spacing, float)
+    Layout._init(self, x, y, w, h, spacing, float)
 end
 
 

src/utils/asset.lua

@@ -9,6 +9,7 @@ local make_class = require 'src.utils.classes'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class Asset
 local Asset = make_class()
 
 

src/utils/classes.lua

@@ -2,7 +2,9 @@
 -- Methods
 ------------------------------------------------------------------------------
 
--- Code from http://lua-users.org/wiki/ObjectOrientationTutorial
+--- Code from http://lua-users.org/wiki/ObjectOrientationTutorial
+---@param ... table Optional base classes
+---@return table cls A class definition
 local function make_class(...)
     -- "cls" is the new class
     local cls, bases = {}, {...}

src/utils/color.lua

@@ -9,6 +9,7 @@ local make_class = require 'src.utils.classes'
 -- Class definitions
 ------------------------------------------------------------------------------
 
+---@class Color
 local Color = make_class()
 
 

src/utils/settings.lua

@@ -4,6 +4,7 @@
 
 local love       = require 'love'
 local magiclines = require 'src.utils.mgclines'
+local make_class = require 'src.utils.classes'
 
 
 ------------------------------------------------------------------------------
@@ -17,25 +18,29 @@ local SETTINGS_PATH = 'settings.ini'
 -- Module definitions
 ------------------------------------------------------------------------------
 
-local settings = {
-    -- Default setting values.
-    permadeath = true,
-    forward    = 'w',
-    backward   = 's',
-    stepleft   = 'a',
-    stepright  = 'd',
-    turnleft   = 'q',
-    turnright  = 'e',
-    musicvol   = 75,
-    soundvol   = 100,
-}
+---@class Settings
+local Settings = make_class()
 
 
 ------------------------------------------------------------------------------
 -- Private module methods
 ------------------------------------------------------------------------------
 
-function settings:_parse_settings_str(s)
+function Settings:_init()
+    -- Default setting values.
+    self.permadeath = true
+    self.forward    = 'w'
+    self.backward   = 's'
+    self.stepleft   = 'a'
+    self.stepright  = 'd'
+    self.turnleft   = 'q'
+    self.turnright  = 'e'
+    self.musicvol   = 75
+    self.soundvol   = 100
+end
+
+
+function Settings:_parse_settings_str(s)
     -- For each line in the data string.
     for line in magiclines(s) do
         -- Check if the line matches a key=value pair
@@ -67,7 +72,7 @@ function settings:_parse_settings_str(s)
 end
 
 
-function settings:_get_settings_str()
+function Settings:_get_settings_str()
     -- Start with the settings category.
     local s = '[settings]\n'
 
@@ -84,7 +89,7 @@ function settings:_get_settings_str()
 end
 
 
-function settings:_open_or_create()
+function Settings:_open_or_create()
     if not love.filesystem.exists(SETTINGS_PATH) then
         -- If the settings file doesn't exist then create it with the default values.
         local setts = self:_get_settings_str()
@@ -106,14 +111,14 @@ end
 -- Public module methods
 ------------------------------------------------------------------------------
 
-function settings:load_settings()
+function Settings:load_settings()
     -- Obtain the settings data and parse it.
     local s = self:_open_or_create()
     self:_parse_settings_str(s)
 end
 
 
-function settings:save_settings()
+function Settings:save_settings()
     if not love.filesystem.exists(SETTINGS_PATH) or love.filesystem.isFile(SETTINGS_PATH) then
         -- If the settings file doesn't exist or it exists and is a file then save the current data.
         love.filesystem.write(SETTINGS_PATH, self:_get_settings_str())
@@ -128,4 +133,4 @@ end
 -- Module return
 ------------------------------------------------------------------------------
 
-return settings
+return Settings()