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I had a problem creating a loading scene in between scenes, the solution I got was to use an overlay, I've been trying this for days but for some reason I can't get it to work. I have two scenes, one that shows a list of items, and another that shows a page of text based on which row was clicked. The problem now is the first scene, that shows the list, downloads images to display and of course this takes a while so whenever i transition into that screen, the app appears to be frozen while everything loads up.
I've found out that it does actually go into the overlay scene, since the print statements i put in it print out, but it just doesn't display anything and when i removed the code that hides the overlay after, it still appears to hang, it goes into the overlay scene, doesn't display anything and then renders the table before finally displaying the overlay so instead of showing an overlay, having everything load up beneath, and then hiding the overlay, it appears to be frozen in the current scene, loads up everything beneath, shows overlay and then hides overlay right after.
My code for the three scenes are below, the one I'm posting now is the only one that actually worked once and then never again, it showed the overlay while everything loaded like I wanted but for some reason, it never worked again after that one time. I'm getting really frustrated with it and no forum has given me a solution, I'd really really appreciate some help. Thanks!
ItemListPage.lua
local composer = require ( "composer" )
local widget = require( "widget" )
local json = require( "json" )
-- Load the relevant LuaSocket modules
local http = require( "socket.http" )
local ltn12 = require( "ltn12" )
local scene = composer.newScene()
--NavigationBar elements initiated
--Removed for readability
--image handler
local function networkListener( event )
if ( event.isError ) then
print ( "Network error - download failed" )
end
print ( "event.response.fullPath: ", event.response.fullPath )
print ( "event.response.filename: ", event.response.filename )
print ( "event.response.baseDirectory: ", event.response.baseDirectory )
end
local function onRowRender( event )
-- Get reference to the row group
local row = event.row
local params=event.row.params
local itemRow=3;
-- Cache the row "contentWidth" and "contentHeight" because the row bounds can change as children objects are added
local rowHeight = row.contentHeight
local rowWidth = row.contentWidth
row.rowTitle = display.newText( row, params.topic, 0, 0, nil, 14 )
row.rowTitle:setFillColor( 0 )
row.rowTitle.anchorX = 0
row.rowTitle.x = 0
row.rowTitle.y = (rowHeight/2) * 0.5
--Other elements removed for readabilty (it's all just text objects)
--Download Image
--params referring to items[i]
local imagelink =params.imagelink
-- Create local file for saving data
local path = system.pathForFile( params.imagename, system.TemporaryDirectory )
myFile = io.open( path, "w+b" )
-- Request remote file and save data to local file
http.request{
url = imagelink,
sink = ltn12.sink.file( myFile )
}
row.Image = display.newImageRect(row, params.imagename, system.TemporaryDirectory, 25, 25)
row.Image.x = 20
row.Image.y = (rowHeight/2) * 1.5
row:insert( row.rowTitle )
row:insert( row.Image )
end
local function onRowTouch( event )
local row = event.target
local params=event.target.params
composer.removeScene(composer.getSceneName("current"))
composer.gotoScene( "itempage" , {params=params})
end
function scene:create( event )
local sceneGroup = self.view
end
function scene:show( event )
local sceneGroup = self.view
local phase = event.phase
if phase == "will" then
-- Called when the scene is still off screen and is about to move on screen
--overlay
composer.showOverlay( "loading", { isModal = true })
elseif phase == "did" then
--Table stuff
local scrollBarOptions = {
sheet = scrollBarSheet, -- Reference to the image sheet
topFrame = 1, -- Number of the "top" frame
middleFrame = 2, -- Number of the "middle" frame
bottomFrame = 3 -- Number of the "bottom" frame
}
-- Table
local tableView = widget.newTableView(
{
left = 0,
top = navBar.height,
height = display.contentHeight-navBar.height,
width = display.contentWidth,
onRowRender = onRowRender,
onRowTouch = onRowTouch,
listener = scrollListener
}
)
--json work
local filename = system.pathForFile( "items.json", system.ResourceDirectory )
local decoded, pos, msg = json.decodeFile( filename )
if not decoded then
print( "Decode failed at "..tostring(pos)..": "..tostring(msg) )
else
print( "File successfully decoded!" )
end
local items=decoded.items
-- create a white background to fill screen
local background = display.newRect( display.contentCenterX, display.contentCenterY, display.contentWidth, display.contentHeight )
background:setFillColor( 1 ) -- white
sceneGroup:insert( background )
-- Insert rows
for i = 1, #items do
-- Insert a row into the tableView
print( "Adding a row!" )
tableView:insertRow{
rowHeight = 100,
rowColor = { default={ 0.8, 0.8, 0.8, 0.8 } },
lineColor = { 1, 0, 0 },
params=items[i]
}
end
sceneGroup:insert( tableView )
composer.hideOverlay( "fade", 100 )
end
end
-- other functions and elements unused and removed for readability
loading.lua
local composer = require ( "composer" )
local widget = require( "widget" )
local json = require( "json" )
local scene = composer.newScene()
-- Create the widget
function scene:create( event )
local sceneGroup = self.view
local background = display.newRect( display.contentCenterX, display.contentCenterY, display.contentWidth, display.contentHeight )
background:setFillColor( 1 ) -- white
local text = display.newText( "Loading scene", 0, 0, nil, 14 )
text:setFillColor( 0 )
text.anchorX = display.contentCenterX
text.x = display.contentCenterX
text.y = display.contentCenterY
sceneGroup:insert( background )
sceneGroup:insert( text )
print ( "In loading create")
end
function scene:show( event )
local sceneGroup = self.view
local phase = event.phase
if phase == "will" then
elseif phase == "did" then
print ( "In loading show")
end
end
-- other functions and elements unused and removed for readability
ItemDisplayPage.lua
local composer = require ( "composer" )
local widget = require( "widget" )
local json = require( "json" )
local scene = composer.newScene()
--NavigationBar elements initiated
--This creates the "back button", when clicked it returns to the previous scene, in this case "itemListPage"
--it takes, no parameters
local function handleLeftButton( event )
if ( event.phase == "ended" ) then
composer.removeScene(composer.getSceneName("current"))
composer.gotoScene(composer.getSceneName("previous"))
end
return true
end
--Remaining navbar elements removed for readability
function scene:create( event )
local sceneGroup = self.view
local params=event.params
-- create a white background to fill screen
local background = display.newRect( display.contentCenterX, display.contentCenterY, display.contentWidth, display.contentHeight )
background:setFillColor( 1 ) -- white
--creating header bar
local bar = display.newRect( navBar.height + (headerBarHeight*0.5), display.contentCenterY, display.contentWidth, headerBarHeight )
bar:setFillColor( 1 )
-- create stuff
local title = display.newText(params.topic, 0, 0, nil, 14 )
title:setFillColor( 0 )
title.anchorX = 0
title.x = margin
title.y = ((2*headerBarHeight/2) * 0.5)+navBar.height
local Image = display.newImageRect(params.imagename, system.TemporaryDirectory, 25, 25)
Image.x = 50
Image.y = display.contentCenterY
-- all objects must be added to group (e.g. self.view)
sceneGroup:insert( background )
sceneGroup:insert( title )
sceneGroup:insert( Image)
end
-- other functions and elements unused and removed for readability
I suggest you do not use scene.show event for loading.
Use timer.performWithDelay to load all data:
--in scene:show
elseif phase == "did" then
timer.performWithDelay(0, function()
local scrollBarOptions = {
--put your code here
composer.hideOverlay( "fade", 100 )
end)
Your current code didn't show overlay because engine waits for scene:show event before rendering anything. So rendering of overlay and images occured after all images are loaded.
In my code timer.performWithDelay doesn't block scene:show execution, so you will see overlay rendered before loading images
I try to make a card game that will change scenes when the player touches on the card but the initial page does not load again.
My code follows:
main.lua
local storyboard = require("storyboard")
local background = display.newImage("Icon-72.png")
storyboard.gotoScene("level1")
level1.lua
local storyboard = require("storyboard")
local level1 = storyboard.newScene()
function level1:createScene( event )
print("level 1 create scene")
local group = self.view
local x = 3
group:insert(display.newText(x,40,50))
-- body
local card = display.newImage("Icon-Small.png")
card.x = 50 ; card.y = 150
group:insert(card)
function card:touch(event )
display.remove(card)
storyboard.gotoScene("level2")
end
card:addEventListener("touch",card)
end
function level1:enterScene( event )
local group = self.view
local card = display.newImage("Icon-Small.png")
card.x = 50 ; card.y = 150
group:insert(card)
function card:touch(event )
display.remove(card)
storyboard.gotoScene("level2")
end
card:addEventListener("touch",card)
-- body
end
level1:addEventListener("createScene",level1)
level1:addEventListener("enterScene",level1)
return level1
level 2 :
local storyboard = require("storyboard")
local level2 = storyboard.newScene()
function level2:createScene( event )
print("level2 create")
local group = self.view
storyboard.purgeScene("level1")
storyboard.gotoScene("level1")
end
level2:addEventLister("createScene",level2)
return level2
You have a typo at the bottom of level2.lua:
level2:addEventLister("createScene",level2)
Should be:
level2:addEventListener("createScene",level2)
As stated in the title I would like to not only call an object from an external Lua file, but I would also like to group:insert() this object into my Menu page with the properties given to it in the external lua file. Is this possible and/or efficient? I would just really like to make sure data isn't repeated through out my project.
EDIT
Here's my code so far:
The group:insert() function is throwing me an error stating it was expecting a table and that I might have been trying to call a function in which case i should use ":" instead of "."
This is menu.lua:
local storyboard = require( "storyboard" )
local scene = storyboard.newScene()
local widget = require "widget"
local m = require ("myData")
local menuFunction = require("menuFunction")
local menuSwipe
-- =======================
-- menuSwipe()
-- =======================
menuSwipe = function(self, event)
local phase = event.phase
local touchID = event.id
if(phase == "began") then
elseif(phase == "moved") then
elseif(phase == "ended" or phase == "cancelled") then
if(m.menuActivator > 0) then
menuDown(m.invisiBar, event)
else
--m.layerInfo = layers
transition.to( menuFunction.menuBar, { x = menuFunction.menuBar.x, y = 0, time = 200 } )
--transition.to( layers, { x = menuFunction.menuBar.x, y = h, time = 100 } )
m.invisiBar = display.newRect( 0,0,w,25,6)
m.invisiBar.alpha = 0
m.menuActivator = 1
end
end
end
-- ++++++++++++++++++++++
-- menuDown()
-- ++++++++++++++++++++++
function menuDown(self, event)
local phase = event.phase
local touchID = event.id
if(phase == "began") then
elseif(phase == "moved") then
elseif(phase == "ended" or phase == "cancelled") then
if(m.menuActivator == 1) then
transition.to( menuFunction.menuBar, { x = m.menuInfo.x, y = h*.964, time = 200 } )
--transition.to( group, { x = 0, y = 0, time = 10 } )
m.menuActivator = 0
end
end
end
function scene:createScene( event )
local group = self.view
group:insert( menuFunction.menuBar ) -- *** ERROR occurs here
end
function scene:enterScene( event )
local group = self.view
end
function scene:exitScene( event )
local group = self.view
end
function scene:destroyScene( event )
local group = self.view
end
scene:addEventListener( "createScene", scene )
scene:addEventListener( "enterScene", scene )
scene:addEventListener( "exitScene", scene )
scene:addEventListener( "destroyScene", scene )
return scene
This is menuFunction.lua:
local m = require("myData")
local menu = require ("menu")
local w = display.contentWidth
local h = display.contentHeight
local menuFunction = {}
--menuBar
menuFunction.menuBar = display.newImage( "images/menuBar1.png")
menuFunction.menuBar.x = w*(1/2)
menuFunction.menuBar.y = h*1.465
menuFunction.menuBar.height = h
menuFunction.menuBar:setReferencePoint(display.TopLeftReferencePoint)
menuFunction.menuBar.touch = menu.menuSwipe
menuFunction.menuBar:addEventListener("touch", menuFunction.menuBar)
return menuFunction
This is the exact error message:
ERROR: table expected. If this is a function call, you might have used '.' instead of ':'
message**
Does this happen every time this code is called, or does it by any chance work the first time and then crashes? In your case, code could work the first time you enter the scene, but the second time you do, it may crash [if you remove scenes in between].
When you do a 'require' of a file, its contents are executed and returned value is saved in the global packages table. When you require the same file again, the returned value is taken from the global packages table instead, the code is not executed again.
So if you by any chance require this file in one spot of your app, and then call :removeSelf() and nil the reference of the menuBar, the display object will be removed and its reference will cease to exist, and calling the require again, will not recreate the object. Fully removing a scene will also remove the display objects.
So what you wanted to achieve is very sensible [contrary to what #Schollii says], but your "module" should allow creation of multiple objects if you want to get rid of them during runtime.
I'm not going to correct your code, just a simple example of how you can achieve this:
-- menu.lua
local menuCreator = {}
menuCreator.newMenu = function(params)
local menu = display.newGroup()
-- create your menu here
return menu
end
return menuCreator
Now anytime you do:
local menuCreator = require("menu.lua")
you will be able to call:
local menu = menuCreator.newMenu(someParams)
and get yourself a nice new menu wherever you need.
If it's not shown all the time on screen, it may be better to create a new one whenever you need it, and then remove it from the memory.
There are several issues with this, and none of them seem related to your error but fixing them will either also fix the error or make the cause of the error more obvious. Please fix following and update:
Although Lua allows it, don't use circular includes, where A includes B which includes A. Instead have menu require menuFunction and then call a creation function in menuFuntion:
-- menuFunction.lua
local m = require("myData")
-- require("menu") -- BAD! :)
local w = display.contentWidth
local h = display.contentHeight
local menuBar = display.newImage( "images/menuBar1.png")
menuBar.x = w*(1/2)
menuBar.y = h*1.465
menuBar.height = h
menuBar:setReferencePoint(display.TopLeftReferencePoint)
local menuFunction = { menuBar = menuBar }
function createMenuBar(menuSwipe)
menuFunction.menuBar.touch = menuSwipe
menuFunction.menuBar:addEventListener("touch", menuFunction.menuBar)
return menuFunction
end
-- menu.lua
function createScene(event)
local mf = require('menuFunction')
mfFunction = mf.createMenuBar(menuSwipe)
group:insert(menuFunction.menuBar)
end
Secondly out of the four calls to group:insert() the first 3 refer to objects that are not shown in the code and don't see relevant to problem, they should be removed or if you think relevant, comment why their code now shown, or show their code.
It looks like I am having problems with transitioning from my level select page to my first level. I think it might be that I am missing something in my level 1, but I don't know exactly.
levelSelect.lua
module(..., package.seeall)
local director = require ("director")
local physics = require("physics")
physics.start()
local widget = require( "widget" )
-- Function to handle button events
local function handleButtonEventLevel1( event )
local phase = event.phase
if "ended" == phase then
director:changeScene("lvl1")
end
end
--local function goLevel1()
--director:changeScene("lvl1")
--return true
--end
--widget.newButton:addEventListener("tap", goLevel1)
local function handleButtonEventToPage( event )
local phase = event.phase
if "ended" == phase then
director:changeScene("page")
end
end
-- Main function - MUST return a display.newGroup()
function new()
local localGroup = display.newGroup()
local background = display.newImage("bigtestsky.png")
background.x=150
background.y=250
local myButton = widget.newButton
{
left = 25,
top = 25,
width = 100,
height = 50,
defaultFile = "default.png",
overFile = "over.png",
label = "1",
font = "LS",
fontSize = 20,
labelColor = { default = {0,0,50}, over = {0,0,255} },
onEvent = handleButtonEventLevel1,
}
local myButton = widget.newButton
{
left = 25,
top = 415,
width = 100,
height = 50,
defaultFile = "default.png",
overFile = "over.png",
label = "BACK",
font = "LS",
fontSize = 20,
labelColor = { default = {0,0,50}, over = {0,0,255} },
onEvent = handleButtonEventToPage,
}
return localGroup
end
lvl1.lua
local physics = require("physics")
physics.start()
local widget = require( "widget" )
(This is what I mean about missing something in the first level. Could someone please help?)
stack traceback:
[C]: ?
.../myName/Desktop/Bubbles! App/director.lua:116: in function 'loadScene'
.../myName/Desktop/Bubbles! App/director.lua:394: in function 'changeScene'
...myName/Desktop/Bubbles! App/levelSelect.lua:14: in function '_onEvent'
?: in function '?'
?: in function <?:405>
?: in function <?:218>
These are due to some issues with your class: lvl1.lua.
If such error occurs, open director.lua analyse the error return line. This will help you to find what the real problem is.
Here, you must write more lines in your lvl1.lua as below:
module(...,package.seeall) -- If this line is not written, then the package will not be loaded.
function new() -- Module 'lvl1' must have a new() function
local localGroup = display.newGroup() -- The scene should create a display group
local physics = require("physics")
physics.start()
local widget = require( "widget" )
print("Inside lvl1...")
return localGroup; -- And the scene should return the previously created display group.
end
Keep Coding.............. :)
I have been modifying code from the memory match game to use scenes, sounds, and a 2d table. Adding the scenes has been the hard part. I have it set up to randomly select items from my 2d table. Load those into a temporary table, shuffle them shuffle(), then boardSet(); to load their sounds and place them on the screen. Basically after the game is over I want the scene to reload or go back to the menu to start again. Selecting random data{} elements over and over.
I have tried returning to the menu, or going to a duplicate scene however I can't seem to correctly unload the objects created by my 2d array, as I can't properly add each item into a display group. I have tried everything I can think of. Right now my game loop is setup to add the play again btn that I want to restart the game after one match is found.
This link was a start in the right direction I believe with information about dealing with tables and groups. I still don't know how to cycle thru my 2d table to include everything in a group and then properly unload it.
http://developer.coronalabs.com/content/application-programming-guide-graphics-and-drawing#Variable_References
---------------------------------------------------------------------------------
--
-- level1.lua
--
---------------------------------------------------------------------------------
local storyboard = require( "storyboard" )
local scene = storyboard.newScene()
local widget = require "widget"
---------------------------------------------------------------------------------
-- BEGINNING OF YOUR IMPLEMENTATION
---------------------------------------------------------------------------------
local image, text1, text2, text3, memTimer
-- forward declarations and other locals
local againBtn
-- 'onRelease' event listener for playBtn
local function onPlayBtnRelease()
-- go to level1.lua scene
storyboard.gotoScene( "menu", "fade", 500 )
return true -- indicates successful touch
end
-- Preload the sound file (needed for Android)
--
local playBeep = function( testSound )
media.playEventSound( testSound )
end
---Preload sounds
ki = audio.loadSound("ki-nawaneyoo.mp3")
u = audio.loadSound("u.mp3")
mayuhoo = audio.loadSound("mayuhoo.mp3")
--End Sound Test
--Set Global width and height variables
_W = display.contentWidth;
_H = display.contentHeight;
---Count number of correct matches
local matchCount = 0;
--Hide status bar
display.setStatusBar(display.HiddenStatusBar);
--Declare a totalButtons variable to track number of buttons on screen
local totalButtons = 0
--Declare variable to track button select
local secondSelect = 0
local checkForMatch = false
--Declare Data Table
local data = {}
--Load objects into data
data[1] = {}
data[1].title = "Naka"
data[1].subtitle = "a"
data[1].image = "a.png"
data[1].image1 = "ear.png"
data[1].sound = "naka-ear.caf"
data[1].sound1 = "naka-ear.mp3"
data[2] = {}
data[2].title = "Aapuhu"
data[2].subtitle = "aa"
data[2].image = "aa.png"
data[2].image1 = "eyebrow.png"
data[2].sound = "aapuhu-eyebrow.caf"
data[2].sound1 = "aapuhu-eyebrow.mp3"
data[3] = {}
data[3].title = "Ego"
data[3].subtitle = "Ego"
data[3].image = "e.png"
data[3].image1 = "tongue.png"
data[3].sound = "ego-tongue.caf"
data[3].sound1 = "ego-tongue.mp3"
data[4] = {}
data[4].title = "Kamoo"
data[4].subtitle = "kamoo"
data[4].image = "ee.png"
data[4].image1 = "chin.png"
data[4].sound = "kamoo-chin.caf"
data[4].sound1 = "kamoo-chin.mp3"
data[5] = {}
data[5].title = "Kowpa"
data[5].subtitle = "ego"
data[5].image = "leg.png"
data[5].image1 = "leg.png"
data[5].sound = "kowpa-leg.caf"
data[5].sound1 = "kowpa-leg.mp3"
data[6] = {}
data[6].title = "Mae"
data[6].subtitle = "kwa"
data[6].image = "hand.png"
data[6].image1 = "hand.png"
data[6].sound = "mae-hand.caf"
data[6].sound1 = "mae-hand.mp3"
data[7] = {}
data[7].title = "Nodo"
data[7].subtitle = "kwe"
data[7].image = "kwe.png"
data[7].image1 = "throat.png"
data[7].sound = "nodo-throat.caf"
data[7].sound1 = "nodo-throat.mp3"
data[8] = {}
data[8].title = "Matogo"
data[8].subtitle = "kwe"
data[8].image = "kwe.png"
data[8].image1 = "thumb.png"
data[8].sound = "matogo-thumb.caf"
data[8].sound1 = "matogo-thumb.mp3"
data[9] = {}
data[9].title = "Matzehe"
data[9].subtitle = "kwe"
data[9].image = "kwe.png"
data[9].image1 = "elbow.png"
data[9].sound = "matzehe-eblow.caf"
data[9].sound1 = "matzehe-elbow.mp3"
data[10] = {}
data[10].title = "Kuku"
data[10].subtitle = "kwe"
data[10].image = "kwe.png"
data[10].image1 = "foot.png"
data[10].sound = "kuku-foot.caf"
data[10].sound1 = "kuku-foot.mp3"
--Declare button, buttonCover, and buttonImages table
local tableCopy = {}
local buttonImages = {}
--Shuffle data table
--local shuffleSet = function()
--Shuffle data table
math.randomseed (os.time())
local function shuffle(a)
local n = #a
local t
local k
while(n > 0) do
t = a[n]
k = math.random(n)
a[n] = a[k]
a[k] = t
n = n - 1
end
return a
end
local tableCopy = shuffle(data);
local button = {}
local buttonCover = {}
--Choose six random objects from data to be used in game.
local firstSix = {}
for i = 1,6 do
firstSix[i] = tableCopy[i];
end
local buttonImages = {firstSix[1],firstSix[1],firstSix[2],firstSix[2],firstSix[3],firstSix[3],firstSix[4],firstSix[4],firstSix[5],firstSix[5],firstSix[6],firstSix[6]}
--end
--Declare and prime a last button selected variable
local lastButton;-- = display.newImage("1.png");
--lastButton.myName = 1;
--
--Set up simple off-white background
--Notify player if match is found or not
local matchText = display.newText(" ", 0, 0, native.systemFont, 65)
matchText:setReferencePoint(display.CenterReferencePoint)
matchText:setTextColor(255, 255, 255)
matchText.x = _W/2
--
--Set starting point for button grid
local x = -20
local matchesFound = 0;
--Set up game function
local function game(object, event)
if(event.phase == "began") then
if(checkForMatch == false and secondSelect == 0) then
--Flip over first button
buttonCover[object.number].isVisible = false;
audio.play(object.sound);
lastButton = object
checkForMatch = true
elseif(checkForMatch == true and object.number ~= lastButton.number) then
if(secondSelect == 0) then
--Flip over second button
buttonCover[object.number].isVisible = false;
secondSelect = 1;
--If buttons do not match, flip buttons over
if(lastButton.myName ~= object.myName) then
audio.play(object.sound);
timer.performWithDelay(1000,function()
matchText.text = "Ki Nawa'neyoo";
audio.play(ki); end,1)
timer.performWithDelay(2500, function()
matchText.text = " ";
checkForMatch = false;
secondSelect = 0;
buttonCover[lastButton.number].isVisible = true;
buttonCover[object.number].isVisible = true;
end, 1)
--If buttons DO match, remove buttons
elseif(lastButton.myName == object.myName) then
matchText.text = "U " .. object.myName .. " Mayuhoo";
audio.play(u)
timer.performWithDelay(750,function()
audio.play(object.sound); end, 1)
timer.performWithDelay(1500,function()
audio.play(mayuhoo); end, 1)
timer.performWithDelay(2400, function()
matchText.text = " ";
checkForMatch = false;
secondSelect = 0;
lastButton:removeSelf();
object:removeSelf();
buttonCover[lastButton.number]:removeSelf();
buttonCover[object.number]:removeSelf();
matchesFound = matchesFound + 1;
timer.performWithDelay(250, function()
if (matchesFound == 1) then
matchText.text = " Play Again? ";
againBtn.isVisible = true;
-- all display objects must be inserted into group
--group:insert( playBtn )
end
end, 1)
end, 1)
end
end
end
end
end
--]]
-- Touch event listener for background image
--[[
local function onSceneTouch( self, event )
if event.phase == "began" then
storyboard.gotoScene( "scene2", "slideLeft", 800 )
return true
end
end
--]]
-- Called when the scene's view does not exist:
function scene:createScene( event )
local screenGroup = self.view
local image = display.newImageRect( "bg.png", display.contentWidth, display.contentHeight )
image:setReferencePoint( display.TopLeftReferencePoint )
image.x, image.y = 0, 0
screenGroup:insert( image )
local function boardSet()
for count = 1,3 do
x = x + 100 * 2
y = 20 *2
for insideCount = 1,4 do
y = y + 90 * 2
--Assign each image a random location on grid
local temp = math.random(1,#buttonImages)
button[count] = display.newImageRect(buttonImages[temp].image1, 150, 150);
--Position the button
button[count].x = x;
button[count].y = y;
--Give each a button a name
button[count].myName = buttonImages[temp].title
-- Preload the sound file (needed for Android)
--Give each button a sounds
soundID = audio.loadSound(buttonImages[temp].sound1)
button[count].sound = soundID
button[count].sound1 = soundID
button[count].number = totalButtons
--Remove button from buttonImages table
table.remove(buttonImages, temp)
--Set a cover to hide the button image
buttonCover[totalButtons] = display.newImageRect("button.png", 150, 150);
buttonCover[totalButtons].x = x; buttonCover[totalButtons].y = y;
--screenGroup:insert(button[count].)
totalButtons = totalButtons + 1
--Attach listener event to each button
button[count].touch = game
button[count]:addEventListener( "touch", button[count] )
end
end
end
boardSet();
end
-- Called immediately after scene has moved onscreen:
function scene:enterScene( event )
againBtn = widget.newButton{
label="Play Again?",
fontSize = 25,
labelColor = { default={255}, over={128} },
default="button1.png",
over="button-over.png",
width=250, height=100,
onRelease = onPlayBtnRelease -- event listener function
}
againBtn:setReferencePoint( display.CenterReferencePoint )
againBtn.x = display.contentWidth * 0.5
againBtn.y = display.contentHeight - 125
againBtn.isVisible = false
print( "1: enterScene event" )
-- remove previous scene's view
end
-- Called when scene is about to move offscreen:
function scene:exitScene( event )
print( "1: exitScene event" )
if againBtn then
matchText.text = " "
againBtn:removeSelf() -- widgets must be manually removed
button = nil
buttonCover = nil
firstSix = nil
data = nil
tableCopy = nil
buttonImages = nil
againBtn = nil
end
end
-- Called prior to the removal of scene's "view" (display group)
function scene:destroyScene( event )
local screenGroup = self.view
storyboard.removeScene();
--storyboard.purgeScene( "level1" )
print( "((destroying scene 1's view))" )
end
---------------------------------------------------------------------------------
-- END OF YOUR IMPLEMENTATION
---------------------------------------------------------------------------------
-- "createScene" event is dispatched if scene's view does not exist
scene:addEventListener( "createScene", scene )
-- "enterScene" event is dispatched whenever scene transition has finished
scene:addEventListener( "enterScene", scene )
-- "exitScene" event is dispatched before next scene's transition begins
scene:addEventListener( "exitScene", scene )
-- "destroyScene" event is dispatched before view is unloaded, which can be
-- automatically unloaded in low memory situations, or explicitly via a call to
-- storyboard.purgeScene() or storyboard.removeScene().
scene:addEventListener( "destroyScene", scene )
---------------------------------------------------------------------------------
return scene
Yeah, this is simple.
here is an example(assuming that you have implemented storyboard)
function scene:createScene(event)
screenGroup = self.view
local image = display.newImage("image.png")
screenGroup:insert(image)
end
Now everything will go fine :)
Add all the display objects to a group.local myGroup = display.newGroup();
local img = display.newImage("yourimage.png");
myGroup:insert(img);
For example
If you follow this method, all display objects will not be flushed out of memory when you change the screen.
When using corona storyboard you need to add display objects to the group. For example you would need to add all of your display objects into screenGroup in order for them to be removed when you change scenes.