feat: new subscreen system

sonic-radiance.love/birb/modules/gui/screen/init.lua

@@ -3,10 +3,10 @@ local ElementList = require "birb.modules.gui.mixins.elements"
 GuiScreen:implement(ElementList)
 
 local TweenManager = require "birb.classes.time"
+local ScreenSet = require "birb.modules.gui.screen.screenset"
 
 local elementDataStruct = require "birb.structures.elementData"
 
-
 function GuiScreen:new(name)
     self:initWrapper()
     self.name = name
@@ -33,12 +33,29 @@ function GuiScreen:update(dt)
 end
 
 function GuiScreen:show()
+    self:showSimple()
+    --TODO: show parent if we show directly the child
+    if (self.set ~= nil) then
+        self.set.owner:show()
+    end
+end
+
+function GuiScreen:showSimple()
     if (not self.isVisible) then
         self.isVisible = true
         if (self.transforms["show"] ~= nil) then
             self:playTransform("show")
         end
+
+        if (self.subscreens ~= nil) then
+            self.subscreens:show()
         end
+
+        if (self.set ~= nil) then
+            self.set:setCurrentScreen(self.name)
+        end
+    end
+
 end
 
 function GuiScreen:hide()
@@ -50,9 +67,14 @@ function GuiScreen:hide()
                 self.isVisible = false
             end)
         end
+
+        if (self.subscreens ~= nil) then
+            self.subscreens:hideCurrent()
         end
     end
 
+end
+
 function GuiScreen:addTransform(name, transform)
     self.transforms[name] = transform
 end
@@ -97,4 +119,25 @@ function GuiScreen:createElements()
     -- Empty function
 end
 
+function GuiScreen:setParentSet(set)
+    self.set = set
+end
+
+function GuiScreen:addSubscreen(screen)
+    self:initSubscreen()
+    self.subscreens:add(screen)
+end
+
+function GuiScreen:showSubscreen(screenname)
+    if (self.subscreens ~= nil) then
+        self.subscreens:show(screenname)
+    end
+end
+
+function GuiScreen:initSubscreen()
+    if (self.subscreens == nil) then
+        self.subscreens = ScreenSet(self)
+    end
+end
+
 return GuiScreen

sonic-radiance.love/birb/modules/gui/screen/screenset.lua

@@ -0,0 +1,69 @@
+-- screens/screenset :: a set of exclusive screens
+-- Useful to handle a complexe menu with several screens
+
+--[[
+  Copyright © 2021 Kazhnuz
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy of
+  this software and associated documentation files (the "Software"), to deal in
+  the Software without restriction, including without limitation the rights to
+  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+  the Software, and to permit persons to whom the Software is furnished to do so,
+  subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+  FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+]]
+
+local ScreenSet = Object:extend()
+
+function ScreenSet:new(owner)
+    self.set = {}
+    self.defaultScreen = ""
+    self.currentScreen = ""
+    self.owner = owner
+end
+
+function ScreenSet:show(screenName)
+    local screenName = screenName
+    if (screenName == nil) then
+      if self.currentScreen == "" then
+        screenName = self.defaultScreen
+      else
+        return
+      end
+    end
+    if screenName ~= "" then
+      self.set[screenName]:showSimple()
+    end
+end
+
+function ScreenSet:setCurrentScreen(screenName)
+  screenName = screenName or self.defaultScreen
+  self:hideCurrent()
+  self.currentScreen = screenName
+end
+
+function ScreenSet:hideCurrent()
+  if (self.currentScreen ~= "") then
+    self.set[self.currentScreen]:hide()
+    self.currentScreen = ""
+  end
+end
+
+function ScreenSet:add(screen, setAsDefault)
+  self.set[screen.name] = screen
+  if (setAsDefault == true or self.defaultScreen == "") then
+    self.defaultScreen = screen.name
+  end
+  screen:setParentSet(self)
+end
+
+return ScreenSet