Narration problem of E-book

cteselcukcagan · January 2013

Hi everyone,

I am a student at Bilkent University CTE department. We use gideros e-book template and we try to create new e-book for our final projects of CTE322 Multimedia Design and Development course. I have a problem which is that I used narration for each page but if I click next or previous page button when the current page narration does not finish, the sound overlap. How I can stop the current page narration when user click next or previous button without finishing current page narration.

Thank You,

Selçuk Çağan

OZApps · January 2013

did you try to stop the sound playing before you change the page?

you get the channel when you play the sound, then use the stop on that channel.

cteselcukcagan · January 2013

yes ı tried but this time there is no sound the current page
each page similir code
for example
page1 sound code is:
music = Sound.new("sounds/0-9.mp3")
local channel = music:play(0,0)
channel:setVolume(0.6)

if I write channel:stop(), there is no sound the current page. Do you mean something like that? It does not work

page2 sound code is
music = Sound.new("sounds/10-19.mp3")
local channel = music:play(0,0)
channel:setVolume(0.6)

My problem is when I click next button before ending page2 sounds and page1 sounds overlap.

cteselcukcagan · January 2013

Also I write page2 channel:stop("sounds/0-9.mp3") but it does not work again

OZApps · January 2013

@cteselcukagan,
could it be a bug in the version of Gideros you are using? If not, try this code it works absolutely fine. I have run/tested this on 2012.09

local music = Sound.new("sounds/0-9.mp3")
local channel = music:play()
channel:setVolume(0.6)
 
Timer.delayedCall(3000, function() channel:stop() end)

the point being that the channel can stop the sound from being played, hope you are retaining the channel and not overwriting it with another.

cteselcukcagan · January 2013

I also use same version gideros studio.
Thank you it works but it is temporarily solution for me because there is 18 more pages and each page has its own narration. When I move to second to third page sound again overlap.

Do you have any more suggestion?

cteselcukcagan · January 2013

Also when I move second page to first page, again sound overlap

OZApps · January 2013

can you post the code for any one page, not highlights but the code that you have in the page (to help you resolve this) (assuming that the sound code is nearly the same for all pages)

because if you have the code right, it should simply work. So curious to know why it is not working for you.

cteselcukcagan · January 2013

This is page2.lua
Page2 = gideros.class(Sprite)

function Page2:init( pageNo, parent)
self.no = pageNo

self.background = Bitmap.new(TextureRegion.new(Texture.new("imgs/background.png", true)))

self:addChild(self.background)
self:addChild(AnimatedSprite.new())

local heading = TTFont.new("verdana.ttf","20")
local head1 = TextField.new(heading,"Numbers in English (10-19)")
head1:setPosition(10,25)
head1:setTextColor(0xB8860B)
self:addChild(head1)

local headTTF1 = TTFont.new("arial.ttf","16")

local text1 = TextField.new(headTTF1, "10 - ten")
text1:setPosition(50, 60)
text1:setTextColor(0xB8860B)
self:addChild(text1)

local text2 = TextField.new(headTTF1, "11 - eleven")
text2:setPosition(50, 95)
text2:setTextColor(0xB8860B)
self:addChild(text2)

local text3 = TextField.new(headTTF1, "12 - twelve")
text3:setPosition(50,130)
text3:setTextColor(0xB8860B)
self:addChild(text3)

local text4 = TextField.new(headTTF1, "13 - thirteen")
text4:setPosition(50, 165)
text4:setTextColor(0xB8860B)
self:addChild(text4)

local text5 = TextField.new(headTTF1, "14 - fourteen")
text5:setPosition(50, 200)
text5:setTextColor(0xB8860B)
self:addChild(text5)

local text6 = TextField.new(headTTF1, "15 - fifteen")
text6:setPosition(50, 235)
text6:setTextColor(0xB8860B)
self:addChild(text6)

local text7 = TextField.new(headTTF1, "16 - sixteen")
text7:setPosition(50, 270)
text7:setTextColor(0xB8860B)
self:addChild(text7)

local text8 = TextField.new(headTTF1, "17 - seventeen")
text8:setPosition(50, 305)
text8:setTextColor(0xB8860B)
self:addChild(text8)

local text9 = TextField.new(headTTF1, "18 - eighteen")
text9:setPosition(50, 340)
text9:setTextColor(0xB8860B)
self:addChild(text9)

local text10 = TextField.new(headTTF1, "19 - nineteen")
text10:setPosition(50, 375)
text10:setTextColor(0xB8860B)
self:addChild(text10)

music = Sound.new("sounds/10-19.mp3")
local channel = music:play(0,0)
channel:setVolume(0.6)

end

This is page1.lua

Page1 = gideros.class(Sprite)

function Page1:init( pageNo, parent)
self.no = pageNo

self.background = Bitmap.new(TextureRegion.new(Texture.new("imgs/background.png", true)))

self:addChild(self.background)

self:addChild(AnimatedSprite.new())

local heading = TTFont.new("verdana.ttf","20")
local head1 = TextField.new(heading,"Numbers in English (0-9)")
head1:setPosition(10,25)
head1:setTextColor(0xB8860B)
self:addChild(head1)

local headTTF1 = TTFont.new("arial.ttf","16")

local text1 = TextField.new(headTTF1, "0 - zero")
text1:setPosition(50, 60)
text1:setTextColor(0xB8860B)
self:addChild(text1)

local text2 = TextField.new(headTTF1, "1 - one")
text2:setPosition(50, 95)
text2:setTextColor(0xB8860B)
self:addChild(text2)

local text3 = TextField.new(headTTF1, "2 - two")
text3:setPosition(50, 130)
text3:setTextColor(0xB8860B)
self:addChild(text3)

local text4 = TextField.new(headTTF1, "3 - three")
text4:setPosition(50, 165)
text4:setTextColor(0xB8860B)
self:addChild(text4)

local text5 = TextField.new(headTTF1, "4 - four")
text5:setPosition(50, 200)
text5:setTextColor(0xB8860B)
self:addChild(text5)

local text6 = TextField.new(headTTF1, "5 - five")
text6:setPosition(50, 235)
text6:setTextColor(0xB8860B)
self:addChild(text6)

local text7 = TextField.new(headTTF1, "6 - six")
text7:setPosition(50, 270)
text7:setTextColor(0xB8860B)
self:addChild(text7)

local text8 = TextField.new(headTTF1, "7 - seven")
text8:setPosition(50, 305)
text8:setTextColor(0xB8860B)
self:addChild(text8)

local text9 = TextField.new(headTTF1, "8 - eight")
text9:setPosition(50, 340)
text9:setTextColor(0xB8860B)
self:addChild(text9)

local text10 = TextField.new(headTTF1, "9 - nine")
text10:setPosition(50, 375)
text10:setTextColor(0xB8860B)
self:addChild(text10)

music = Sound.new("sounds/0-9.mp3")
local channel = music:play(0,0)
channel:setVolume(0.6)

end

This is sceneContoller.lua
sceneController = gideros.class(Sprite)

local pages = {}
-- create a list of pages, to set their order of apperance.
pages[1] = "Page0"
pages[2] = "Page1"
pages[3] = "Page2"
pages[4] = "Page3"
pages[5] = "Page4"
pages[6] = "Page5"
pages[7] = "Page6"
pages[8] = "Page7"
pages[9] = "Page8"
pages[10] = "Page9"
pages[11] = "Page10"
pages[12] = "Page11"
pages[13] ="Page12"
pages[14] ="Page13"
pages[15] ="Page14"
pages[16] ="Page15"
pages[17] ="Page16"
pages[18] ="Page17"
pages[19] ="Page18"
pages[20] ="Page19"
pages[21] ="Page20"
pages[22] ="Page21"
pages[23] ="Page22"

local beginx = 225
local beginy = 450
local leftx= 260
local lefty= 450
local rightx = 295
local homex = 190
local homey = 450
local righty = 450

function sceneController:init()
self.scenes = SceneManager.new({ --scenes are defined
["Page0"] = Page0,
["Page1"] = Page1,
["Page2"] = Page2,
["Page3"] = Page3,
["Page4"] = Page4,
["Page5"] = Page5,
["Page6"] = Page6,
["Page7"] = Page7,
["Page8"] = Page8,
["Page9"] = Page9,
["Page10"] = Page10,
["Page11"] = Page11,
["Page12"] = Page12,
["Page13"] = Page13,
["Page14"] = Page14,
["Page15"] = Page15,
["Page16"] = Page16,
["Page17"] = Page17,
["Page18"] = Page18,
["Page19"] = Page19,
["Page20"] = Page20,
["Page21"] = Page21,
["Page22"] = Page22,
})

music = Sound.new("sounds/music4.mp3")

local channel = music:play(0, 1000)
channel:setVolume(0.2)
self:addChild(self.scenes)
-- add the first page
self.scenes:changeScene("Page0")
self.pageNo = 1

-- this is the button on the left. to go back
self.left = Button.new(Bitmap.new(Texture.new("imgs/left-up.png")), Bitmap.new(Texture.new("imgs/left-down.png")))
self.left:setPosition(leftx, lefty)
self:addChild(self.left)

self.home = Button.new(Bitmap.new(Texture.new("imgs/credits-up.png")), Bitmap.new(Texture.new("imgs/credits_down.png")))
self.home:setPosition(homex, homey)
self:addChild(self.home)

-- thins is the button on the right, to go fprward.
self.right = Button.new(Bitmap.new(Texture.new("imgs/right-up.png")), Bitmap.new(Texture.new("imgs/right-down.png")))
self.right:setPosition(rightx, righty)
self:addChild(self.right)

-- "click" event is mapped to the function of scenecontroller, self.leftClick
-- when the "click" event is pressed, this function will be called.
self.left:addEventListener("click", self.leftClick, self)
self.right:addEventListener("click", self.rightClick, self)
self.home:addEventListener("click",self.homeClick,self)
end

function sceneController:homeClick()
print(self.pageNo)
self.pageNo = 23
self.scenes:changeScene(pages[self.pageNo],1, SceneManager.flipWithShade, easing.inBack)
end

function sceneController:leftClick()
print(self.pageNo)
-- previous index
self.pageNo = self.pageNo - 1
if self.pageNo < 1 then self.pageNo = 1 end
print(self.pageNo)
-- give next scene, the duration, the effect, and the easing mode. you can play with them to see how they look.
self.scenes:changeScene(pages[self.pageNo],1, SceneManager.flipWithShade, easing.inBack)

end

function sceneController:rightClick()
self.pageNo = self.pageNo + 1
if self.pageNo > 23 then self.pageNo = 1 end

self.scenes:changeScene(pages[self.pageNo],1, SceneManager.flipWithFade, easing.inBack)
end

This is main.lua
local sc = sceneController.new()
stage:addChild(sc)

hnim · January 2013

@cteselcukcagan: try add this code in each page init

self.music = Sound.new("sounds/0-9.mp3")		
	self.channel  = self.music:play(0, 1000)
	self.channel:setVolume(0.6)
 
	self:addEventListener("exitBegin", function() self.channel:stop() end)

hnim · January 2013

@cteselcukcagan: music var is global, so when you change scene, it's assigned to other object.

OZApps · January 2013

@cteselcukcagan, as @hnim mentioned and since you are using the Scene Manager, you need to set up an event listener for events as appropriate. In this case you might need to use the exitBegin. Where you can stop the music from playing on exitBegin.

Another thing that you can do is to save the channel to the self object and remove it if the channel object is not nil

if self.channel then 
  self.channel:stop()
  self.channel = nil
end

In case you need to refer to understand a bit more about the SceneManager, there is a lovely article on Gideros Tutorials at http://www.giderosmobile.com/blog/2011/11/17/gideros-scene-manager/

cteselcukcagan · January 2013

thank you so much your valuable responses

I promise after finishing my final exam I look at this book now I am following you twitter OZApps

cteselcukcagan · January 2013

It is completely work thank you so much I am so happy

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