SceneManager

tytadas · December 2016

Why my project works fine without any errors, but after pressing the button to go to another scene, nothing is happening.. Any ideas?

antix · December 2016

So can you give us a little more info? You have one scene that plays okay and then it fails to transition to the next scene?

tytadas · December 2016

Yes, thats right.

Here's the code to move to another scene

local playButton = Bitmap.new(Texture.new("images/playbutton.png", true))
	playButton:setAnchorPoint(0.5, 0.5)
	playButton:setPosition((conf.height - playButton:getHeight())/2 - 50, conf.width - 180)
	self:addChild(playButton)
	playButton:addEventListener("click", function()
		sceneManager:changeScene("PlayScene", conf.transitionTime, conf.transition, conf.easing)
	end)

The most fun part everything works, so I have no idea where should I look for the error..

tytadas · December 2016

Still didn't found the succesfull way to manage it out..

talis · December 2016

@tytadas I have some question to you:
1-Did you define your sceneclasses and are you sure there are really exist correspending lua files for the scenes with the same names(you should have PlayScene.lua,sc1.lua and sc2.lua for the below example) :

sceneManager = SceneManager.new({
	["sc1"] = sc1,
	["sc2"] = sc2,
	["PlayScene"] = PlayScene
 
})

PlayScene.lua

PlayScene= gideros.class(Sprite)
function PlayScene:init()
 
	local background = Bitmap.new(Texture.new("Images/test.png"))
	stage:addChild(background)
--Any code actually goes here
end

2-After defining your sceneclasses did you added to the stage or to your own main class:

 
stage:addChild(sceneManager)

3-I strongly suggest you to look this code to understand better.
http://appcodingeasy.com/Gideros-Mobile/Manage-Scenes-in-Gideros-Mobile

Please let us know if you solve your issue.

tytadas · December 2016

@talis Thanks for the answer. Im afraid everything is just as you said..

talis · December 2016

can you share your project with zip file, it grasp my interest, it should work

In addition can you try this one:
https://github.com/ar2rsawseen/GameTemplate

This is gameTemplate it also uses scene manager and it is working. So we can be sure if the problem is with your code or not.

antix · December 2016

Have you tried making your PlayScene just empty so it just changes the background color on init?

tytadas · December 2016

I'm sorry, but I'm going to add the file codes because I already imported a lot of game stuff and images, so I would like to keep everything in a secret

firstScene.lua file

firstScene = Core.class(Sprite)
 
function firstScene:init()
 
 
	local bg = Bitmap.new(Texture.new("images/background.png", true))
	bg:setAnchorPoint(0.5, 0.5)
	bg:setPosition(conf.width/2, conf.height/2)
	self:addChild(bg)
	self:addEventListener("enterEnd", self.onEnterEnd, self)
 
	local logo = Bitmap.new(Texture.new("images/logot.png", true))
	logo:setAnchorPoint(0.5,0.5)
	logo:setPosition((conf.height - logo:getHeight())/2 - 80, conf.width - 370)
	self:addChild(logo)
 
	local playButton = Bitmap.new(Texture.new("images/playbutton.png", true))
	playButton:setAnchorPoint(0.5, 0.5)
	playButton:setPosition((conf.height - playButton:getHeight())/2 - 50, conf.width - 180)
	self:addChild(playButton)
		playButton:addEventListener("click", function()
		sceneManager:changeScene("playScene", conf.transitionTime, conf.transition, conf.easing)
		end)
 
 
	local settingsButton = Bitmap.new(Texture.new("images/settingsbutton.png", true))
	settingsButton:setAnchorPoint(0.5,0.5)
	settingsButton:setPosition((conf.height - settingsButton:getHeight())/2 - 180, conf.width - 10)
		self:addChild(settingsButton)
 
 
	local rateusButton = Bitmap.new(Texture.new("images/rateusbutton.png", true))
	rateusButton:setAnchorPoint(0.5,0.5)
	rateusButton:setPosition((conf.height - rateusButton:getWidth())/2 + 40,  conf.width - 10)
		self:addChild(rateusButton)
 
	local faqButton = Bitmap.new(Texture.new("images/faqbutton.png", true))
	faqButton:setAnchorPoint(0.5,0.5)
	faqButton:setPosition((conf.height - faqButton:getHeight())/2 - 70, conf.width + 150)
		self:addChild(faqButton)
 
	self:addEventListener(Event.KEY_DOWN, function(event)
		if event.keyCode == KeyCode.BACK then
			application:exit()
		end
		end)
end

main.lua:

DEBUGGING = true
 
 
PREFS = Prefe.new()
PREFS:loadPrefs()
 
sceneManager = SceneManager.new({
  ["Gideros"] = Gideros,
  ["LasTreasure"] = LasTreasure,
  ["firstScene"]  = firstScene,
  ["playScene"] = playScene,
})
 
stage:addChild(sceneManager)
 
sceneManager:changeScene(
  "Gideros", 1, SceneManager.fade, easing.linear, 
  {
    userData = {
      onComplete = function() 
        sceneManager:changeScene(
          "LasTreasure", 1, SceneManager.fade, easing.linear, 
          {
            userData = {
              onComplete = function() 
                sceneManager:changeScene(
                  "firstScene", 1, SceneManager.fade, easing.linear)
              end
            }
          })
      end
    }
  })

I have scenemanager.lua and easing.lua aswell. my configuration.lua looks like this:

conf = {
 
transition = SceneManager.fade,
transitionTime = 1,
easing = easing.outBack,
width = application:getContentWidth(),
height = application:getContentHeight(),
dx = application:getLogicalTranslateX()/application:getLogicalScaleX(),
dy = application:getLogicalTranslateY()/application:getLogicalScaleY(),
 
}

And inside playScene.lua theres nothing else but just a black background.
It seems I added everything to know about the project. I tried adding EnterEnd listener, but still doesn't seem to work.

tytadas · December 2016

But ofcourse if needed, I will share it via zip file. Just let me know! Thanks!

tytadas · December 2016

@antix No, I haven't. I'm going to try it out

tytadas · December 2016

@antix It seems like it doesn't work with the background colors..

talis · December 2016

@tytadas did you download the game template and tried that; Is it working?

tytadas · December 2016

Yes, it works, my other projects works aswell

talis · December 2016

Lua files are not always processed in order. Maybe your configuration.lua file is executed after you need it.
So can you add all your configration file code to init.lua.
init.lua is some special file which Gideros will always execute first. Even before main.lua.

Best way is to download some working Scenemanager project or create so much simple one by your self without any details (no conf file, no extra code )as i wrote before. So you can be sure if there is some problem with your code, structure etc etc....
If it will also not work we can focus on the correct side of the problem. Now we are just wildly guessing

tytadas · December 2016

The most interesting part is that I widely checked mines project code dependency and the GameTemplate code dependency. There aren't any big difference or should I say the call order is the same as GameTemplate.

GameTemplate code dependency:
This is from the bottom to the top:
main.lua
start.lua
and scenes(pack_select.lua and etc...)
later it goes conf.lua
and after that all the classes( dataSaver, scenemanager..)

Mine code dependency:
main.lua
firstScene.lua
2 splashscreen scenes
configuration.lua
and classes

So the call order is the same type as the GameTemplate. I checked the call order already for like 150 times, It can't be true that I'm missing something, ofcourse it's possible but I'm a human as everyone else. Sorry for your time

tytadas · December 2016

I created fast and simple scenemanager project:

main.lua:

sceneManager = SceneManager.new({
["start"] = start,
["play"] = play
})
stage:addChild(sceneManager)
 
sceneManager:changeScene("start", 1, SceneManager.moveFromRight, easing.outBack)

start:

start = Core.class(Sprite)
 
function start:init()
local background = Bitmap.new(Texture.new("12223.jpg"))
self:addChild(background)
 
background:addEventListener("click", function()
	sceneManager:changeScene("play", 1, SceneManager.fade, easing.outBack)
 
end)
end

play.lua:

play = Core.class(Sprite)
 
function play:init()
 
	local texturee = TextField.new(nil, "I am here")
	texture:setPosition(100,100)
	self:addChild(texture)
 
end

Doesn't work while pressing on a background.. but the background is small, on the corner

tytadas · December 2016

I'm definately missing something..

talis · December 2016

In your event listener did you define custom event "click" ? Just use Event.Mouse_DOWN which is already defined maybe
Try like this please:
main.lua

sceneManager = SceneManager.new({
["start"] = start,
["play"] = play
})
stage:addChild(sceneManager)
 
sceneManager:changeScene("start", 1, SceneManager.moveFromRight, easing.outBack)

start.lua

start = Core.class(Sprite)
 
function start:init()
 
	local texture2 = TextField.new(nil, "Click ME")
	texture2:setPosition(100,100)
	self:addChild(texture2)
 
 
texture2:addEventListener(Event.MOUSE_DOWN, function()
	sceneManager:changeScene("play", 1, SceneManager.fade, easing.outBack)
 
end)
end

play.lua

play = Core.class(Sprite)
 
function play:init()
 
	local texturee = TextField.new(nil, "I am here")
	texturee:setPosition(100,100)
	self:addChild(texturee)
 
end

Please copy paste all above and tell us the result , curious about it.

tytadas · December 2016

Yea it works. But I can't understand whats the mistake, the "click" worked on my first project.. o.O

antix · December 2016

So it seems there is something wrong in your PlayScene. Maybe just make a new project and copy that scene into it. Then in main just create a new instance of the PlayScene and see if Gideros Studio throws an error.

tytadas · December 2016

@talis Hey man, You have changed my code so the button would manage the game to move to another scene. But every button now reacts to the same changeScene code, I have 4 buttons, and all the 4 buttons changes me to the "play" scene and it shouldn't be like that.. What to do??

tytadas · December 2016

What should I do now?

antix · December 2016

@tytadas, if you make a new blank scene and start that instead of your play scene does it work or not work?

tytadas · December 2016

yes, it works. But imagine you have 4 different buttons, and all the buttons,while being pressed and the scene changes right? And my codes on different buttons has different change scene name:

changeScene("gamesc" 1..)
 
                           changeScene("settsc", 1..)

But both buttons directs to the gamesc, while there is settsc scene.

hgy29 · December 2016

@tytadas, I am late in the discussion but reading earlier posts I assume your button event listener is something like:

texture2:addEventListener(Event.MOUSE_DOWN, function()
	sceneManager:changeScene("play", 1, SceneManager.fade, easing.outBack)
end)

which would work if there is only one such button in the scene, because if you have more than one, you need to check that click coordinates are within your button bounds. That is :

texture2:addEventListener(Event.MOUSE_DOWN, function(e)
 if texture2:hitTestPoint(e.x,e.y,true) then
  sceneManager:changeScene("play", 1, SceneManager.fade, easing.outBack)
 end
end)

Or something similar. If my assumptions are correct and doing this fixes your issue, I'll leave it to as an exercise to explain to others why you had such a behaviour without that check :P

tytadas · December 2016

I'm sooo.. I forgot about hitTestPoint -_- Thanks @hgy29, but I'm afraid it does not work as it should,
Output:

attempt to index global 'e' (a nil value)

Line 3 executes an error, which is:

if texture2:hitTestPoint(e.x,e.y,true) then

vitalitymobile · December 2016

Another way to debug project like this is to make code clean and using a class if possible.
Can you try using the button class from here:
https://github.com/gideros/Button/blob/master/button.lua

I think @hgy29 assumptions is correct and Button Class will help you with hitTestPoint error above.

hgy29 · December 2016

@tytadas, thre is something weird because 'e' variable (event) isn't global in this scope, it is the function argument (or you missed it maybe) ?

tytadas · December 2016

@hgy29 No, I just copied your code and it looks like this(this is mainsc.lua):

function mainsc:onEnterEnd()
 
 
	local playbutton = Bitmap.new(Texture.new("images/playbutton.png", true))
	playbutton:setPosition((conf.height - playbutton:getHeight())/2 - 50, conf.width - 180)
	playbutton:setAnchorPoint(0.5,0.5)
	self:addChild(playbutton)
 
	playbutton:addEventListener(Event.MOUSE_DOWN, function()
		if playbutton:hitTestPoint(e.x,e.y,true) then
		sceneManager:changeScene("gamesc", conf.transitionTime, conf.transition, conf.easing)
		end
		end)
 
 
 
	local settingsButton = Bitmap.new(Texture.new("images/settingsbutton.png", true))
	settingsButton:setAnchorPoint(0.5,0.5)
	settingsButton:setPosition((conf.height - settingsButton:getHeight())/2 - 180, conf.width - 10)
	self:addChild(settingsButton) 
 
	settingsButton:addEventListener(Event.MOUSE_DOWN, function()
		if settingsButton:hitTestPoint(e.x,e.y,true) then
		sceneManager:changeScene("setsc", conf.transitionTime, conf.transition, conf.easing)
		end
		end)
end

main.lua:

sceneManager = SceneManager.new({
  ["Gideros"] = Gideros,
  ["LasTreasure"] = LasTreasure,
  ["mainsc"] = mainsc,
  ["gamesc"] = gamesc,
  ["setsc"] = setsc,
 
})
 
stage:addChild(sceneManager)
 
sceneManager:changeScene(
  "Gideros", 1, SceneManager.fade, conf.easing, 
  {
    userData = {
      onComplete = function() 
        sceneManager:changeScene(
          "LasTreasure", 1, SceneManager.fade, conf.easing, 
          {
            userData = {
              onComplete = function() 
                sceneManager:changeScene(
                  "mainsc", 1, SceneManager.fade, conf.easing)
              end
            }
          })
      end
    }
  })

And output shows this:

/mainsc.lua:37: attempt to index global 'e' (a nil value)
stack traceback:
	scenes/mainsc.lua:37: in function <scenes/mainsc.lua:36>

If I use "click" it does not work and buttons do not react to a touch. But now the error is different

tytadas · December 2016

@vitalitymobile I will try, but a bit later at work now

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