scenes/mainmenu: add icons to basic menu

imperium-porcorum.love/scenes/debugmenu/mainmenu.lua

@@ -29,8 +29,8 @@ function MenuObject:new(scene)
   self.isActive  = true
 
   MapWidget(self)
-  MainWidget(self, "MANAGE PIGS")
+  MainWidget(self, "MANAGE PIGS", "blue", "manage")
-  MainWidget(self, "BONUS", "green")
+  MainWidget(self, "BONUS", "green", "bonus")
   OptionsWidget(self)
   ExitWidget(self)
   self:addSlot(1,  0,  0, 13,  6)
@@ -40,17 +40,20 @@ function MenuObject:new(scene)
   self:addSlot(5, 13,  9, 13,  3)
 end
 
-function MainWidget:new(menusystem, label, color)
+function MainWidget:new(menusystem, label, color, icon)
   MainWidget.super.new(self, menusystem)
   self.scene = menusystem.scene
   self.label = label or ""
   self.color = color or "blue"
+  self.icon  = icon  or "exit"
 end
 
 function MainWidget:redrawCanvas()
   self.width, self.height = self.menu:getWidgetSize(self.id)
   local filename = "assets/sprites/gui/textbox/" .. self.color .. "box.png"
   self.textbox   = game.gui.newTextBox(filename, self.width, self.height)
+  local iconname = "assets/sprites/menu/" .. self.icon .. ".png"
+  self.icon      = love.graphics.newImage(iconname)
   MainWidget.super.redrawCanvas(self)
 end
 
@@ -58,8 +61,11 @@ function MainWidget:drawCanvas()
   love.graphics.draw(self.textbox, 0, 0)
   if self.height >= 64 then
     love.graphics.printf(self.label, 0, 8, self.width, "center")
+    love.graphics.draw(self.icon, self.width/2, self.height/2 + 12, 0, 1, 1, 19, 19)
   else
     love.graphics.printf(self.label, 64, 16, self.width, "left")
+    love.graphics.draw(self.icon, 19+16, self.height/2, 0, 1, 1, 19, 19)
+
   end
 end
 
@@ -78,7 +84,7 @@ function MainWidget:draw(x, y)
 end
 
 function MapWidget:new(menusystem)
-  MapWidget.super.new(self, menusystem, "WORLD MAP", "red")
+  MapWidget.super.new(self, menusystem, "WORLD MAP", "red", "worldmap")
 end
 
 function MapWidget:action()
@@ -94,7 +100,7 @@ function ExitWidget:action()
 end
 
 function OptionsWidget:new(menusystem)
-  OptionsWidget.super.new(self, menusystem, "OPTIONS", "yellow")
+  OptionsWidget.super.new(self, menusystem, "OPTIONS", "yellow", "options")
 end
 
 function OptionsWidget:action()