From 9af261cd204b999e6b2b5a44d5c5eb768f84c49d Mon Sep 17 00:00:00 2001
From: Aki <nthirtyone@gmail.com>
Date: Wed, 12 Jul 2017 16:00:51 +0200
Subject: Created Scene class extended SceneManager a little bit to support
 multiple scenes

---
 not/Menu.lua         |  2 +-
 not/Scene.lua        | 32 ++++++++++++++++++++++++++++++++
 not/SceneManager.lua | 44 ++++++++++++++++++++++++++++++++++----------
 not/World.lua        |  4 +---
 4 files changed, 68 insertions(+), 14 deletions(-)
 create mode 100644 not/Scene.lua

diff --git a/not/Menu.lua b/not/Menu.lua
index 1688166..ea47993 100644
--- a/not/Menu.lua
+++ b/not/Menu.lua
@@ -1,7 +1,7 @@
 --- `Menu`
 -- It creates single screen of a menu
 -- I do know that model I used here and in `World` loading configuration files is not flawless but I did not want to rewrite `World`s one but wanted to keep things similar at least in project scope.
-Menu = require "not.Object":extends()
+Menu = require "not.Scene":extends()
 
 Menu.scale = getScale()
 Menu.elements = --[[{not.Element}]]nil
diff --git a/not/Scene.lua b/not/Scene.lua
new file mode 100644
index 0000000..c770fe4
--- /dev/null
+++ b/not/Scene.lua
@@ -0,0 +1,32 @@
+--- `Scene`
+Scene = require "not.Object":extends()
+
+function Scene:new ()
+	self.sleeping = false
+	self.hidden = false
+	self.inputDisabled = false
+end
+
+-- Following setters and getters are a little bit too much, I think. But they do follow general coding directions.
+function Scene:setSleeping (sleeping)
+	self.sleeping = sleeping
+end
+function Scene:isSleeping ()
+	return self.sleeping
+end
+
+function Scene:setHidden (hidden)
+	self.hidden = hidden
+end
+function Scene:isHidden ()
+	return self.hidden
+end
+
+function Scene:setInputDisabled (inputDisabled)
+	self.inputDisabled = inputDisabled
+end
+function Scene:isInputDisabled ()
+	return self.inputDisabled
+end
+
+return Scene
diff --git a/not/SceneManager.lua b/not/SceneManager.lua
index 2e429c2..c9a8e20 100644
--- a/not/SceneManager.lua
+++ b/not/SceneManager.lua
@@ -3,31 +3,55 @@
 -- TODO: Extend functionality for more than one active scene (eg. overlay menu).
 SceneManager = require "not.Object":extends()
 
+function SceneManager:new ()
+	self.scenes = {}
+end
+
+-- This function should be removed when multiple scenes will be handled properly by SceneManager and other things.
 function SceneManager:changeScene (scene)
-	if self.scene ~= nil then
-		self.scene:delete()
-	end
-	self.scene = scene
+	table.remove(self.scenes, #self.scenes)
+	return self:addScene(scene)
+end
+
+function SceneManager:addScene (scene)
+	table.insert(self.scenes, scene)
+	return scene
 end
 
-function SceneManager:getScene ()
-	return self.scene
+function SceneManager:getAllScenes ()
+	return self.scenes
 end
 
 function SceneManager:update (dt)
-	self:getScene():update(dt)
+	for _,scene in pairs(self:getAllScenes()) do
+		if not scene:isSleeping() then
+			scene:update(dt)
+		end
+	end
 end
 
 function SceneManager:draw ()
-	self:getScene():draw()
+	for _,scene in pairs(self:getAllScenes()) do
+		if not scene:isHidden() then
+			scene:draw()
+		end
+	end
 end
 
 function SceneManager:controlpressed (set, action, key)
-	self:getScene():controlpressed(set, action, key)
+	for _,scene in pairs(self:getAllScenes()) do
+		if not scene:isInputDisabled() then
+			scene:controlpressed(set, action, key)
+		end
+	end
 end
 
 function SceneManager:controlreleased (set, action, key)
-	self:getScene():controlreleased(set, action, key)
+	for _,scene in pairs(self:getAllScenes()) do
+		if not scene:isInputDisabled() then
+			scene:controlreleased(set, action, key)
+		end
+	end
 end
 
 return SceneManager
diff --git a/not/World.lua b/not/World.lua
index 8108a8a..65ca59e 100644
--- a/not/World.lua
+++ b/not/World.lua
@@ -1,9 +1,7 @@
-require "not.Object"
-
 --- `World`
 -- Used to manage physical world and everything inside it: clouds, platforms, nauts, background etc.
 -- TODO: Possibly move common parts of `World` and `Menu` to abstract class `Scene`.
-World = Object:extends()
+World = require "not.Scene":extends()
 
 World.world =--[[love.physics.newWorld]]nil
 World.Nauts =--[[{not.Hero}]]nil
-- 
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