core/menusystem: add function to change menu

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

@@ -62,6 +62,20 @@ function MainMenu:createBanner()
 
 end
 
+function MainMenu:selectMenu(menuID)
+  self.menusystem:setAllMenuVisibility(false)
+  self.menusystem:setAllMenuActivity(false)
+
+  if (self.menusystem.menus[menuID] == nil) then
+    error("ERROR, menu " .. menuID .. " doesn't exist in scene menusystem")
+  end
+
+  self.menusystem.menus[menuID].isVisible = true
+  self.menusystem.menus[menuID].isActive  = true
+
+  self.menusystem.menus[menuID]:getFocus()
+end
+
 function MainMenu:update(dt)
   MainMenu.super.update(self, dt)
   lovebird.update()

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

@@ -22,7 +22,7 @@ function Widgets.Menu:new(menu, name, menuID)
 end
 
 function Widgets.Menu:action()
-  self.menusystem:selectMenu(self.menuID)
+  self.scene:selectMenu(self.menuID)
 end
 
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